AEC V8

ERF:

coomsey:
I need some help with this please. Is it industry normal to design the engine, make one then see if it works? Cheers Paul

Yes Paul, at least it was in the 1960’s, especially so with a clean sheet design.

The stages of development for the AEC V8 should have been…

Concept
Design Drawings
Materials Selection and Testing
Prototype Working Drawings
Prototype Casting and Machining
Prototype Engine Assembly and Testing
Development Review (back to step 2 if required)
More Prototype Engine Testing
Another Development Review
Production Drawings
Production Tooling
Engine into Production

AEC went from step 6 straight to step 10 with the V8.

Aah! The 6 to 10 thing I get the reasons behind it. So when the V8 was on the drawing board was there anything that should have been a definite no no or was it a ■■■■ it n see thing? I ask these simple questions of you to try n make a bit more sense of this thread. Thanks Paul

Badge loyalty happened a lot! I worked for a BMC dealership back when the commercials were still badged as ‘Austin’ and ‘Morris’ (we sold Morris) and customers wanting a vehicle that we were unable to supply from stock would rather wait a month or more than go a mile across town to the ‘rival’ Austin dealership where they had stock! Vice versa applied of course. Identical vehicles apart from a plastic grille badge but old loyalties meant a lot to operators back then.

Regarding the comment about the armed forces struggling for parts etc overseas, my dad was serving with the army in North Africa from 1948-51 and he said that when they needed a part for a vehicle that wasn’t ‘in stock’ they could usually buy some back from the Arabs who had stripped the vehicles etc left abandoned in the desert during WW2! :laughing:

Pete.

coomsey:

ERF:

coomsey:
I need some help with this please. Is it industry normal to design the engine, make one then see if it works? Cheers Paul

Yes Paul, at least it was in the 1960’s, especially so with a clean sheet design.

The stages of development for the AEC V8 should have been…

Concept
Design Drawings
Materials Selection and Testing
Prototype Working Drawings
Prototype Casting and Machining
Prototype Engine Assembly and Testing
Development Review (back to step 2 if required)
More Prototype Engine Testing
Another Development Review
Production Drawings
Production Tooling
Engine into Production

AEC went from step 6 straight to step 10 with the V8.

Aah! The 6 to 10 thing I get the reasons behind it. So when the V8 was on the drawing board was there anything that should have been a definite no no or was it a ■■■■ it n see thing? I ask these simple questions of you to try n make a bit more sense of this thread. Thanks Paul

Well, Carryfast will no doubt bombard you as he continually has everyone else with his opinion on the stroke dimension, but for reasons he chooses to ignore, it was decided on, it was there, and that was that. It played no significant part in the mechanical failings of this engine I can assure you, but our resident engine design guru will disagree.

Should the engineers have seen it’s actual shortcomings at the Design Drawing stage?. No. These were highly experienced and regarded engine designers, and this was the very first automotive V8 Diesel engine to be designed and built in Great Britain, so the AEC engineers had absolutely no relevant previous data to work with. Cooling any V8 evenly is notoriously difficult by it’s nature, and many lessons that are still relevant today were learned from the AEC V8.

The fact that AEC produced a very compact and powerful engine that not only ran, but was actually capable of any service life - even with the regular intensive maintenance it relied on - at literally the very first attempt is an amazing achievement. We can only speculate as to how good this engine would have been with proper development. The AEC engineers should be celebrated for it, not that they ever will be on here… :frowning:

ERF:

newmercman:
ERF, you raise an important point, customer loyalty, would, in this case, AEC customers, buy Leyland badged vehicles? I believe they would, as long as nothing changed but the badges, on the surface at least, ultimately shared technology between the different marques would bring both a cost saving to the group as a whole and provide buyers with a better lorry.

I don’t disagree about the Ergomatic cab, it was revolutionary and much better than anything from the competition, I spent my childhood in the lorries of the era and my personal favourite by far was the Mandator. Easy access, very important for a kid, clambering up wheel nuts to reach the cab could be a painful experience lol, quieter than the rest, definitely warmer and the engine hump was the perfect height to rest my weary head, but the direction that the V8 was heading required an even better version, it should have gone hand in hand with the new high powered model, a proper range topper.

The Daf CF has been mentioned a few times and is a good example, it’s the 760 Mandator of today, whereas the XF range is the top of the line and gets the high power option, same with all the other manufacturers, the big power option always comes with a bigger cab. In the case of the V8, it would have solved one of its fundamental flaws too. A missed opportunity.

I remember tremendous anti Leyland feeling among customers at the time, who felt very bitter that their chosen marque had been closed down. Compounded by the fact that Leyland immediately raised the price of parts for these withdrawn marques by a considerable margin.

Carryfast stated in his post that it’s all about the product, not the name. To some of these operators it was ALL about the name. Hell could freeze over before they would have the word ‘Leyland’ going down the road on the front of their lorries. By the 1980’s these operators had a wide choice of well designed and reliable goods vehicles at their disposal, and they used it!.

I can completely see where you are coming from on cabs. The premium spec vehicle having greater road presence etc, but remember this was the 1960’s. Can you imagine turning up at a traditional British haulage yard in 1968 with the Leyland 3VTG concept vehicle as a sales demonstrator? The kids (myself included!) would have stood open mouthed in awe of the exhaust stacks, chrome air horns and cruising lights. The boss would’ve flung open his office door barking “get that [zb] circus waggon out of here”!

A moot point . Alan Firmin removed all branding from the front of his vehicles, AEC complained but were told that since they were not paying to advertise on his vehicles the name had been removed, if they cared to agree a fee then the badges would be reinstated. If one looks at the few period pictures of his vehicles it can be seen that the AEC triangle has been replaced with one showing IIRC his initials and various crops. All manufacturers were treated the same way. There were certainly ERFs running around with triangle badges.

ERF:

coomsey:

ERF:

coomsey:
I need some help with this please. Is it industry normal to design the engine, make one then see if it works? Cheers Paul

Yes Paul, at least it was in the 1960’s, especially so with a clean sheet design.

The stages of development for the AEC V8 should have been…

Concept
Design Drawings
Materials Selection and Testing
Prototype Working Drawings
Prototype Casting and Machining
Prototype Engine Assembly and Testing
Development Review (back to step 2 if required)
More Prototype Engine Testing
Another Development Review
Production Drawings
Production Tooling
Engine into Production

AEC went from step 6 straight to step 10 with the V8.

Aah! The 6 to 10 thing I get the reasons behind it. So when the V8 was on the drawing board was there anything that should have been a definite no no or was it a ■■■■ it n see thing? I ask these simple questions of you to try n make a bit more sense of this thread. Thanks Paul

Well, Carryfast will no doubt bombard you as he continually has everyone else with his opinion on the stroke dimension, but for reasons he chooses to ignore, it was decided on, it was there, and that was that. It played no significant part in the mechanical failings of this engine I can assure you, but our resident engine design guru will disagree.

Should the engineers have seen it’s actual shortcomings at the Design Drawing stage?. No. These were highly experienced and regarded engine designers, and this was the very first automotive V8 Diesel engine to be designed and built in Great Britain, so the AEC engineers had absolutely no relevant previous data to work with. Cooling any V8 evenly is notoriously difficult by it’s nature, and many lessons that are still relevant today were learned from the AEC V8.

The fact that AEC produced a very compact and powerful engine that not only ran, but was actually capable of any service life - even with the regular intensive maintenance it relied on - at literally the very first attempt is an amazing achievement. We can only speculate as to how good this engine would have been with proper development. The AEC engineers should be celebrated for it, not that they ever will be on here… :frowning:

I appreciate that ERF. So if the designers had not been overruled and the normal proving process had been followed do you believe they would have had a decent engine? If so would they have had a ground breaking success on their hands? N more importantly would it have saved BL? Difficult questions to answer but intriguing for me. Cheers Paul

gingerfold:
Just been having a catch-up read of the latest posts as I couldn’t join the debate last evening as I had a central heating breakdown at home to try and sort out.

Without digressing too much from the main theme of the discussion, i.e. the AEC V8, as we keep getting the Detroit Diesel 8v71 mentioned then it begs the question why did it become an option in certain Scammell Crusader models? It might have had some special types applications in the UK before the Crusader, but in standard UK truck specifications it was an unknown quantity.

The answer as to why the Detroit 8v71 was used in military 6x4 Crusaders is because the MoD specified it. Obviously Scammell had a long standing relationship as a supplier to the MoD, and its predecessor The War Office, but all military vehicle contracts and vehicle specifications are agreed by the manufacturer and the MoD procurement departments. Some military vehicles are very similar to civilian vehicles, for example AEC Mammoth Major 6x4 refuellers for the RAF, others are far more specialised. And different branches of the armed forces have their own special requirements.

Back in the mid-1960s, when the Crusader range was first planned, as a military vehicle in its first inception, the Cold War was at its height and all the military strategists believed that non-nuclear land warfare between NATO (spearheaded by the US Army) and the USSR would be fought on the plains of North Eastern Europe. Deployment of tanks and other military hardware would need to be done quickly on an established road network and there would be a pooling of logistical resources, if necessary, between the NATO allies. As the Detroit Diesel engines were common in US military vehicles and other motorised equipment then by having British and NATO vehicles with the same engine types then it was better for battlefield maintenance and repair facilities. The scenario of US maintenance units repairing Scammell Crusaders would have been considered. The Detroit Diesel engines had their origin in the early 1940s, this specialised division being set up by General Motors to supply the US military.

I am fortunate in that my brother in law was a career civil servant and worked in the MoD for 43 years until retirement at a very senior level. He was stationed at NATO headquarters in Brussels from 1973 until 1975 and such was his seniority that he took part in “war games” with senior military top brass at various times in the UK, Europe, and the USA.

No doubt the above information will be dis-regarded by one or two, but my research has been backed up by my brother in law who has provided the military scenarios outlined above. So, that is the reason that Scammell used the Detroit Diesel 8v71, and the ■■■■■■■ V8-903 was also listed, but whether any were built with that option is not known.

Which leaves the question that most if not all military Crusaders used the …Rolls Royce Eagle not the 8v71 ?. :confused:

Also bearing in mind that the cold war and NATO operations were no different through the 1970’s as they were through the 1960’s.Also bearing in mind that the US forces had no problem working with Brit forces using the Rolls petrol engined Centurions in Korea and Europe to the point where they actually preferred the Centurion to their own tanks.On that note NATO obviously had a massive range of different trucks varying from Brit Bedfords.To the Antar which of course had the cut down diesel V8 version of the V12 petrol Meteor in the Centurion both of which obviously being two totally different pieces of kit until the Challenger and Commander appeared using the Rolls CV12 although still two totally incompatible different ratings of the same engine.All also being totally different to anything in the US inventory like the US M 123 and 125 themselves using both Le Roi petrol and ■■■■■■■ V8 diesels together.While ironically the 8 v 71 seems to have had a relatively limited role in US forces vehicles the main one being self propelled artillery in 8v71T form.In which case I’d doubt that Brit forces vehicles often if ever needed to be worked on in US field workshops or vice versa at that time.

While the Brits seemed to have had no problem dealing with a mixture of different engines varying from Continental radial petrol to Detroit diesels in their Shermans during WW2 the different fuel supplies being the main issue in that case not parts etc as I heard it.Which then leaves the question of the 8v92 replacing the Rolls CV12 and then CAT replacing the 8v92 in the HET with the US using a gas turbine powered tank v the Brit Challenger 2 still using the CV12 and ze Germans using the MTU in the Leopard and their own SLT Deutz powered transporter.IE a total mish mash which makes any idea of rationalisation in NATO to date erroneous and moot.

So I’d guess that any NATO link with the 8 v 71 Crusader is a red herring and the choice was simply that the 8v71 was the better V8 diesel than the AEC ( or the ■■■■■■■ 903 ) that mainly if not all about civilian orders.

Which then still leaves the question of the how and why of the situation of Scammell emerging unscathed form the AEC V8 debacle by way of the choice of the 8v71.That choice having nothing to do with NATO or the military but obviously someone at Scammell calling a spade a spade in the case of the AEC V8 and Stokes agreeing with them. :bulb:

coomsey:
I appreciate that ERF. So if the designers had not been overruled and the normal proving process had been followed do you believe they would have had a decent engine? If so would they have had a ground breaking success on their hands? N more importantly would it have saved BL? Difficult questions to answer but intriguing for me. Cheers Paul

I know the AEC V8 engine inside out, and not only do I believe that Paul, but people who have spent their entire professional life developing Diesel engines believe it was so very close to being a success too. A missed opportunity if ever there was one.

If it had been developed properly, and the subsequent turbo charging applied to it, AEC’s plan of using the engine right through the 1970’s and beyond would have been realised. No question about that.

As to your other question, I don’t really feel qualified to speculate - perhaps ‘gingerfold’ will give us his hypothetical thoughts on a Leyland Truck & Bus operation WITH a successful AEC V8 on their hands, and how that could have panned out for the group?.

I except Gingerfold’s explanation of the GM V8 in the military Crusader although I tend to think this may well have been the spec for BAOR as I still have written accounts of the MoD specifying the Rolls Royce engine, in fact three versions of the Eagle range were used overall for Crusader models, the 220, 280 and 305. Many Crusaders were used as REME Wreckers and Royal Engineer Plant Transport in particular. One source accounts that although the ■■■■■■■ and AEC V8’s were specified he never came across any that had the ■■■■■■■ fitted. It may be worth mentioning that BAOR vehicles were almost all left hand drive, as you would expect, so when the MoD ordered vehicles they would specify what engines went into particular chassis depending on what theatre they would serve. Franky.

ERF:

coomsey:
I appreciate that ERF. So if the designers had not been overruled and the normal proving process had been followed do you believe they would have had a decent engine? If so would they have had a ground breaking success on their hands? N more importantly would it have saved BL? Difficult questions to answer but intriguing for me. Cheers Paul

I know the AEC V8 engine inside out, and not only do I believe that Paul, but people who have spent their entire professional life developing Diesel engines believe it was so very close to being a success too. A missed opportunity if ever there was one.

If it had been developed properly, and the subsequent turbo charging applied to it, AEC’s plan of using the engine right through the 1970’s and beyond would have been realised. No question about that.

As to your other question, I don’t really feel qualified to speculate - perhaps ‘gingerfold’ will give us his hypothetical thoughts on a Leyland Truck & Bus operation WITH a successful AEC V8 on their hands, and how that could have panned out for the group?.

Exceptional foresight scuppered by a bit of short term thinking possibly? In the mid 70s Les a mechanic said to me that if a diesel engine could do more than 2100 rpm it would eventually destroy itself. Is that nonsense? I ask cos the V8 n the 500 ,of which I had 3 of, would be in the frame. Cheers Paul

Carryfast:
Which leaves the question that most if not all military Crusaders used the …Rolls Royce Eagle not the 8v71 ?. :confused:

Edit to add.This seems to suggest that there was no connection between the military and the first design requirement for the Crusader being a civilian project from day 1.Also can’t find any confirmation anywhere of any military 8v71 orders. :confused:

But no surprise in finding more confirmation of the durability of the 8v71 in civilian service.We can probably safely say that Scammell weren’t instructed to use the AEC V8 over the Detroit for a reason and it had nothing to do with the military. :bulb:

archive.commercialmotor.com/arti … t-crusader

hcvc.com.au/forum/truck_Chat … ader#15900

coomsey:
In the mid 70s Les a mechanic said to me that if a diesel engine could do more than 2100 rpm it would eventually destroy itself. Is that nonsense? I ask cos the V8 n the 500 ,of which I had 3 of, would be in the frame. Cheers Paul

Probably more along the lines if it’s designed to ‘need’ to run those sort of engine speeds on a regular basis to do any useful work,combined with the lack of leverage at the crank,then it will inevitably self destruct before its time and before a good lugger like the Scania V8 will.As shown perfectly in that ice cold in Alex starting handle v steam engine analogy previously posted. :bulb: :wink:

Frankydobo:
I except Gingerfold’s explanation of the GM V8 in the military Crusader although I tend to think this may well have been the spec for BAOR as I still have written accounts of the MoD specifying the Rolls Royce engine, in fact three versions of the Eagle range were used overall for Crusader models, the 220, 280 and 305. Many Crusaders were used as REME Wreckers and Royal Engineer Plant Transport in particular. One source accounts that although the ■■■■■■■ and AEC V8’s were specified he never came across any that had the ■■■■■■■ fitted. It may be worth mentioning that BAOR vehicles were almost all left hand drive, as you would expect, so when the MoD ordered vehicles they would specify what engines went into particular chassis depending on what theatre they would serve. Franky.

Franky I have searched for a Scammell Crusader in service with BAOR, but no luck so far, but I did find this.

coomsey:
Exceptional foresight scuppered by a bit of short term thinking possibly? In the mid 70s Les a mechanic said to me that if a diesel engine could do more than 2100 rpm it would eventually destroy itself. Is that nonsense? I ask cos the V8 n the 500 ,of which I had 3 of, would be in the frame. Cheers Paul

Maybe some of the larger diesel engines wouldn’t like high rpm’s Paul but engines like the BMC 3.8/5.7 and Bedfords own truck engines ran around the 2700 rpm range without blowing themselves to pieces, well not every day at least! :laughing: My Rolls 265Li revved around the 1950-2000 mark the same as a Gardner 6LXB/LXC.

Pete.

coomsey:
I need some help with this please. Is it industry normal to design the engine, make one then see if it works? Cheers Paul

It would appear AEC used the customers as test mules and let the customers do the testing.This still happens today.■■■■■■■ also took this approach.

railstaff:

coomsey:
I need some help with this please. Is it industry normal to design the engine, make one then see if it works? Cheers Paul

It would appear AEC used the customers as test mules and let the customers do the testing.This still happens today.■■■■■■■ also took this approach.

:open_mouth:

To be fair ■■■■■■■ were on a good bet with the 855 at least.While Leyland’s business plan seemed to have been a case of Fogg setting up a competition between Leyland and AEC as to who could run up the most warranty claim costs with the 500 and V8 respectively. :open_mouth: :laughing:

As for the V8 it was obvious that a bigger bore than the Scania DS 14 combined with a shorter stroke than a 1930’s Humber car engine was never going to work. :open_mouth:

ERF:

coomsey:
I appreciate that ERF. So if the designers had not been overruled and the normal proving process had been followed do you believe they would have had a decent engine? If so would they have had a ground breaking success on their hands? N more importantly would it have saved BL? Difficult questions to answer but intriguing for me. Cheers Paul

I know the AEC V8 engine inside out, and not only do I believe that Paul, but people who have spent their entire professional life developing Diesel engines believe it was so very close to being a success too. A missed opportunity if ever there was one.

If it had been developed properly, and the subsequent turbo charging applied to it, AEC’s plan of using the engine right through the 1970’s and beyond would have been realised. No question about that.

As to your other question, I don’t really feel qualified to speculate - perhaps ‘gingerfold’ will give us his hypothetical thoughts on a Leyland Truck & Bus operation WITH a successful AEC V8 on their hands, and how that could have panned out for the group?.

Well ERF, you’ve given me the proverbial “hospital pass” with that question, but a bit of speculation never went amiss on TN. Firstly, looking at the V8 engine and the development that we know was put into improving it between 1969 and 1971. I do believe that the improved V8 was to have been the Marathon engine, with two power ratings, V8-801 at 280 bhp normally aspirated, and VT8-810 at 350 bhp turbo-charged. The reason given for binning the entire project because of excessive noise still puzzles me; it didn’t seem to be excessively noisy to me in service; I remember the Hipwood and Grundy Mandator V8s, and also the Air Products V8s based at Walkden, just about 3 miles from H & G’s yard. But then again AEC was always a company that played by the rules, so looking at potential legal problems about engine noise must have influenced Bob Fryars’ decision.

So would a successful V8 engine have saved the BL Group? There are two scenarios. Firstly, with BMC tagged on then no, it was doomed from 1968 with BMC no matter how successful the truck range might have been. Secondly, without BMC, then it might have survived but with the proviso that ruthless rationalisation of the numerous factories and duplicated models had taken place in the early 1970s. I think that Newmercman got his analysis correct with his suggested model and marque range in a previous post of his. As Leyland had acquired Standard Triumph and Jaguar, then those cars could have been accommodated within a grouping comprising Leyland, Albion, AEC, Scammell and Guy but each of the lorry makers would have to have had a distinct model range and target market. As for the PSVs then I would have given Leyland the double deckers and single deck service buses, and AEC the luxury coaches.

Looking at the number of employees gives some idea of the imbalance that BMC added to the equation in 1968. Some figures from Graces Guide for 1961 and 1963 provide the comparison.
AEC in 1961 employed approx. 5,000, and this was about to increase by another 1,000 with the acquisition of Transport Equipment Thornycroft in that same year.
In 1963 Leyland Motors and its constituents of Albion, Scammell, AEC and Standard Triumph employed 19,000.
In 1963 BMC employed 79,000, so in 1968 Leyland took on the challenge of a distressed company financially with over 4 times the number of employees. How could that ever have worked? Just imagine the sum of money needed weekly to pay the wages.

As we’ve already touched on marque loyalty then I’ll put my take on that into the mix. It was a big factor for many operators in the 1960s and 1970s, so any marque rationalisation would always have been tricky. Some very major fleets had direct dealings with AEC at Southall and their sales orders were taken by AEC and not regional distributors. There were five major operators who could call off new vehicles from Southall by just making a 'phone call. Harold Wood, BRS, London Brick Company, Shell Mex & B.P. and Air Products. Similarly other constituent group companies had dedicated operators. My previous employer Spillers Milling was a Leyland customer for most of its heavy lorry requirements, and Spillers suffered badly with the 500 series engine disaster, but it still stuck with Leyland. Marque loyalty is an important factor in any analysis.

windrush:

coomsey:
Exceptional foresight scuppered by a bit of short term thinking possibly? In the mid 70s Les a mechanic said to me that if a diesel engine could do more than 2100 rpm it would eventually destroy itself. Is that nonsense? I ask cos the V8 n the 500 ,of which I had 3 of, would be in the frame. Cheers Paul

Maybe some of the larger diesel engines wouldn’t like high rpm’s Paul but engines like the BMC 3.8/5.7 and Bedfords own truck engines ran around the 2700 rpm range without blowing themselves to pieces, well not every day at least! :laughing: My Rolls 265Li revved around the 1950-2000 mark the same as a Gardner 6LXB/LXC.

Pete.

Forgive me for this. In my head I’m assuming more revs more stress, heat n wear. Is that an amateurs view of it

gingerfold:

ERF:

coomsey:
I appreciate that ERF. So if the designers had not been overruled and the normal proving process had been followed do you believe they would have had a decent engine? If so would they have had a ground breaking success on their hands? N more importantly would it have saved BL? Difficult questions to answer but intriguing for me. Cheers Paul

I know the AEC V8 engine inside out, and not only do I believe that Paul, but people who have spent their entire professional life developing Diesel engines believe it was so very close to being a success too. A missed opportunity if ever there was one.

If it had been developed properly, and the subsequent turbo charging applied to it, AEC’s plan of using the engine right through the 1970’s and beyond would have been realised. No question about that.

As to your other question, I don’t really feel qualified to speculate - perhaps ‘gingerfold’ will give us his hypothetical thoughts on a Leyland Truck & Bus operation WITH a successful AEC V8 on their hands, and how that could have panned out for the group?.

Well ERF, you’ve given me the proverbial “hospital pass” with that question, but a bit of speculation never went amiss on TN. Firstly, looking at the V8 engine and the development that we know was put into improving it between 1969 and 1971. I do believe that the improved V8 was to have been the Marathon engine, with two power ratings, V8-801 at 280 bhp normally aspirated, and VT8-810 at 350 bhp turbo-charged. The reason given for binning the entire project because of excessive noise still puzzles me; it didn’t seem to be excessively noisy to me in service; I remember the Hipwood and Grundy Mandator V8s, and also the Air Products V8s based at Walkden, just about 3 miles from H & G’s yard. But then again AEC was always a company that played by the rules, so looking at potential legal problems about engine noise must have influenced Bob Fryars’ decision.

So would a successful V8 engine have saved the BL Group? There are two scenarios. Firstly, with BMC tagged on then no, it was doomed from 1968 with BMC no matter how successful the truck range might have been. Secondly, without BMC, then it might have survived but with the proviso that ruthless rationalisation of the numerous factories and duplicated models had taken place in the early 1970s. I think that Newmercman got his analysis correct with his suggested model and marque range in a previous post of his. As Leyland had acquired Standard Triumph and Jaguar, then those cars could have been accommodated within a grouping comprising Leyland, Albion, AEC, Scammell and Guy but each of the lorry makers would have to have had a distinct model range and target market. As for the PSVs then I would have given Leyland the double deckers and single deck service buses, and AEC the luxury coaches.

Looking at the number of employees gives some idea of the imbalance that BMC added to the equation in 1968. Some figures from Graces Guide for 1961 and 1963 provide the comparison.
AEC in 1961 employed approx. 5,000, and this was about to increase by another 1,000 with the acquisition of Transport Equipment Thornycroft in that same year.
In 1963 Leyland Motors and its constituents of Albion, Scammell, AEC and Standard Triumph employed 19,000.
In 1963 BMC employed 79,000, so in 1968 Leyland took on the challenge of a distressed company financially with over 4 times the number of employees. How could that ever have worked? Just imagine the sum of money needed weekly to pay the wages.

As we’ve already touched on marque loyalty then I’ll put my take on that into the mix. It was a big factor for many operators in the 1960s and 1970s, so any marque rationalisation would always have been tricky. Some very major fleets had direct dealings with AEC at Southall and their sales orders were taken by AEC and not regional distributors. There were five major operators who could call off new vehicles from Southall by just making a 'phone call. Harold Wood, BRS, London Brick Company, Shell Mex & B.P. and Air Products. Similarly other constituent group companies had dedicated operators. My previous employer Spillers Milling was a Leyland customer for most of its heavy lorry requirements, and Spillers suffered badly with the 500 series engine disaster, but it still stuck with Leyland. Marque loyalty is an important factor in any analysis.

Good god that is one serious workforce.I cant imagine that amount of people in one place/places.

Carryfast:

coomsey:
In the mid 70s Les a mechanic said to me that if a diesel engine could do more than 2100 rpm it would eventually destroy itself. Is that nonsense? I ask cos the V8 n the 500 ,of which I had 3 of, would be in the frame. Cheers Paul

Probably more along the lines if it’s designed to ‘need’ to run those sort of engine speeds on a regular basis to do any useful work,combined with the lack of leverage at the crank,then it will inevitably self destruct before its time and before a good lugger like the Scania V8 will.As shown perfectly in that ice cold in Alex starting handle v steam engine analogy previously posted. :bulb: :wink:

It wasn’t posted! The post was, unsurprisingly, off topic and a waste of time, so it was deleted.

Sent from my SM-G950W using Tapatalk

Carryfast:

coomsey:
In the mid 70s Les a mechanic said to me that if a diesel engine could do more than 2100 rpm it would eventually destroy itself. Is that nonsense? I ask cos the V8 n the 500 ,of which I had 3 of, would be in the frame. Cheers Paul

Probably more along the lines if it’s designed to ‘need’ to run those sort of engine speeds on a regular basis to do any useful work,combined with the lack of leverage at the crank,then it will inevitably self destruct before its time and before a good lugger like the Scania V8 will.As shown perfectly in that ice cold in Alex starting handle v steam engine analogy previously posted. :bulb: :wink:

The relevant Scania v AEC analogy seems to have gone missing in the post so tried again.

AEC were using a starting handle while Scania were using a crankshaft. :wink:

Scania.

youtube.com/watch?v=wbgYddG8gqs

AEC.

youtube.com/watch?v=k81rRaszRlg

Look on their hands as being the big ends and their wrist and forearm bones as the con rods and elbow joints as the small ends.So we whip them to work faster then they just get even hotter and thirsty and hungry and their hands ( bearing shells blister even sooner ).Or give them bigger arm muscles ( turbocharging ) then their hands blister even sooner and/or even break and/or their fore arm bones break and/or elbow joints let go.AEC obviously only gave up with the bigger muscles idea :open_mouth: :laughing: while totally missing the point that you need a proper crankshaft to provide the leverage to move the heavy weight. :bulb: