The Carryfast engine design discussion

Well I reckon all this vitriol stems from being shown the door at Windmill Lane when the spotty-faced oik, during his prospective apprentice’s interview, started telling them that their existing design for broom handles was all wrong. :smiley:

cav551:
Well I reckon all this vitriol stems from being shown the door at Windmill Lane when the spotty-faced oik, during his prospective apprentice’s interview, started telling them that their existing design for broom handles was all wrong. :smiley:

The problem was more that they wanted the same area swept in a shift with an 18 inch broom head as RR with a 36 inch one.They just expected their sweepers to run.

I thought Stokes had closed the firm down by 1975. :smiling_imp: :wink:

Ah! now that this highly technical thread has moved on to the more mundane areas of life which I can properly ID with could I ask our illustrious panel and particularly our Chairman Emeritus ( CF ) a question that bugged me for many years which concerns left and right handed brush shafts and heads ! As I have always tried to use a left handed brush I have always had difficulty in sweeping straight as the brush always wanted to veer off to the right ! is there any adjustment that I can make to the brush to cure it of this problem ? It might be me as I’m right handed at tennis but left handed at Cricket and golf ! I will look forward to hearing the advice of the panel ! Cheers Bewick.

Now then Mr Bewick are you blaming the brush for this defect or are you trying to say you may be ambidextrous ■■?

Tyneside

tyneside:
Now then Mr Bewick are you blaming the brush for this defect or are you trying to say you may be ambidextrous ■■?

Tyneside

Thanks for that “tyneside” ! I knew there was a big word for my condition but as it had more than 3 letters in it I was ■■■■■■ ! :blush: :unamused: :wink: :laughing: :laughing: :laughing: :laughing: Cheers Dennis.

Carryfast:

coomsey:
What’s it about n what’s trying to be proved evades me for the time. I’m hoping all will be revealed in the fullness of time. Mind you I held the same opinion with the Sopranos !!!■■?

It’s simple enough.That the TL12 would blow its head gasket or wear out its ends within its warranty period or soon after because not enough leverage to make the equivalent torque figures v TD120 and RR Eagle. :wink:

8% more load is the difference between perfection and failure, says the man who thinks that schoolboy algebra is a debatable lie and pressure is a philosophical flight of fancy multiplied by 4.264.

Carryfast:

cav551:
Well I reckon all this vitriol stems from being shown the door at Windmill Lane when the spotty-faced oik, during his prospective apprentice’s interview, started telling them that their existing design for broom handles was all wrong. :smiley:

The problem was more that they wanted the same area swept in a shift with an 18 inch broom head as RR with a 36 inch one.They just expected their sweepers to run.

I thought Stokes had closed the firm down by 1975. :smiling_imp: :wink:

A process he started in the '60s

Bewick:
Ah! now that this highly technical thread has moved on to the more mundane areas of life which I can properly ID with could I ask our illustrious panel and particularly our Chairman Emeritus ( CF ) a question that bugged me for many years which concerns left and right handed brush shafts and heads ! As I have always tried to use a left handed brush I have always had difficulty in sweeping straight as the brush always wanted to veer off to the right ! is there any adjustment that I can make to the brush to cure it of this problem ? It might be me as I’m right handed at tennis but left handed at Cricket and golf ! I will look forward to hearing the advice of the panel ! Cheers Bewick.

Your leverage is all wrong with the angle you are trying to hold the shaft at, hold the shaft 8% further up stick an RR badge on it and all will be well.

Bewick:
Ah! now that this highly technical thread has moved on to the more mundane areas of life which I can properly ID with could I ask our illustrious panel and particularly our Chairman Emeritus ( CF ) a question that bugged me for many years which concerns left and right handed brush shafts and heads ! As I have always tried to use a left handed brush I have always had difficulty in sweeping straight as the brush always wanted to veer off to the right ! is there any adjustment that I can make to the brush to cure it of this problem ? It might be me as I’m right handed at tennis but left handed at Cricket and golf ! I will look forward to hearing the advice of the panel ! Cheers Bewick.

You’re showing your inexperience with this sweeping lark.
You’re supposed to bush the broom ahead of you placed centrally not to one side.
Place hands on the broom handle to preference.
A good wide RR broom head will sweep more area in a ‘sweep’ than a narrower AEC one will. :wink: :smiley:

[zb]
anorak:

Carryfast:

coomsey:
What’s it about n what’s trying to be proved evades me for the time. I’m hoping all will be revealed in the fullness of time. Mind you I held the same opinion with the Sopranos !!!■■?

It’s simple enough.That the TL12 would blow its head gasket or wear out its ends within its warranty period or soon after because not enough leverage to make the equivalent torque figures v TD120 and RR Eagle. :wink:

8% more load is the difference between perfection and failure, says the man who thinks that schoolboy algebra is a debatable lie and pressure is a philosophical flight of fancy multiplied by 4.264.

You do know that leverage is a force multiplier.So it’s obviouly not just 7% more force required on your con rod.It’s 43% more x 7% more.

Feel free to show any point in the power stroke where peak cylinder pressure actually matches specific torque x 2.464.Yes that really is all that BMEP is at the end of the day.

Or where you won’t need to apply the resulting well over 1,000 psi x the area of the piston, x the leverage deficit, to the much smaller area of your head fasteners and end bearings.

Since when did 1,000 psi + + equate to 2 x BMEP.Which is what you originally said.

dave docwra:

Bewick:
Ah! now that this highly technical thread has moved on to the more mundane areas of life which I can properly ID with could I ask our illustrious panel and particularly our Chairman Emeritus ( CF ) a question that bugged me for many years which concerns left and right handed brush shafts and heads ! As I have always tried to use a left handed brush I have always had difficulty in sweeping straight as the brush always wanted to veer off to the right ! is there any adjustment that I can make to the brush to cure it of this problem ? It might be me as I’m right handed at tennis but left handed at Cricket and golf ! I will look forward to hearing the advice of the panel ! Cheers Bewick.

Your leverage is all wrong with the angle you are trying to hold the shaft at, hold the shaft 8% further up stick an RR badge on it and all will be well.

I’ve had my “sweeper” in the shop and connected to the Krypton but the readings were inconclusive so I’m booked in to have it on the Roller Brake Tester next week ! If all else fails there is a Bloke in Leatherhead who is apparently an A.C.E. at tuning brushes up so I’ll ship it down to him but I can’t find his address so can anyone help me on that score ! Cheers Bewick :wink: :laughing: :laughing: :laughing: :laughing:

Carryfast:

Bewick:
Ah! now that this highly technical thread has moved on to the more mundane areas of life which I can properly ID with could I ask our illustrious panel and particularly our Chairman Emeritus ( CF ) a question that bugged me for many years which concerns left and right handed brush shafts and heads ! As I have always tried to use a left handed brush I have always had difficulty in sweeping straight as the brush always wanted to veer off to the right ! is there any adjustment that I can make to the brush to cure it of this problem ? It might be me as I’m right handed at tennis but left handed at Cricket and golf ! I will look forward to hearing the advice of the panel ! Cheers Bewick.

You’re showing your inexperience with this sweeping lark.
You’re supposed to bush the broom ahead of you placed centrally not to one side.
Place hands on the broom handle to preference.
A good wide RR broom head will sweep more area in a ‘sweep’ than a narrower AEC one will. :wink: :smiley:

Definitely has the making of another long term thread and from what I can make out CF this must rank as the most sensible post you have made so it clearly demonstrates where your expertise has been gained from ! i.e. “driving a brush” :wink: :laughing: :laughing: :laughing: :laughing: :laughing:

Bewick:
Definitely has the making of another long term thread and from what I can make out CF this must rank as the most sensible post you have made so it clearly demonstrates where your expertise has been gained from ! i.e. “driving a brush” :wink: :laughing: :laughing: :laughing: :laughing: :laughing:

Not forgetting the very rare Gardner broom.No doubt copied from RR not AEC.Some say it wasn’t any good not because it wasn’t the same width but because their sweepers were on starvation rations and walking skeletons so not strong enough to push any broom of any width. :smiling_imp: :laughing:

Bewick:

dave docwra:

Bewick:
Ah! now that this highly technical thread has moved on to the more mundane areas of life which I can properly ID with could I ask our illustrious panel and particularly our Chairman Emeritus ( CF ) a question that bugged me for many years which concerns left and right handed brush shafts and heads ! As I have always tried to use a left handed brush I have always had difficulty in sweeping straight as the brush always wanted to veer off to the right ! is there any adjustment that I can make to the brush to cure it of this problem ? It might be me as I’m right handed at tennis but left handed at Cricket and golf ! I will look forward to hearing the advice of the panel ! Cheers Bewick.

Your leverage is all wrong with the angle you are trying to hold the shaft at, hold the shaft 8% further up stick an RR badge on it and all will be well.

I’ve had my “sweeper” in the shop and connected to the Krypton but the readings were inconclusive so I’m booked in to have it on the Roller Brake Tester next week ! If all else fails there is a Bloke in Leatherhead who is apparently an A.C.E. at tuning brushes up so I’ll ship it down to him but I can’t find his address so can anyone help me on that score ! Cheers Bewick :wink: :laughing: :laughing: :laughing: :laughing:

This is his drop off address

Kentigern Drive, Crowthorne, Berkshire, RG45 7EG

Hope this helps.

Dave…

dave docwra:

Bewick:

dave docwra:

Bewick:
Ah! now that this highly technical thread has moved on to the more mundane areas of life which I can properly ID with could I ask our illustrious panel and particularly our Chairman Emeritus ( CF ) a question that bugged me for many years which concerns left and right handed brush shafts and heads ! As I have always tried to use a left handed brush I have always had difficulty in sweeping straight as the brush always wanted to veer off to the right ! is there any adjustment that I can make to the brush to cure it of this problem ? It might be me as I’m right handed at tennis but left handed at Cricket and golf ! I will look forward to hearing the advice of the panel ! Cheers Bewick.

Your leverage is all wrong with the angle you are trying to hold the shaft at, hold the shaft 8% further up stick an RR badge on it and all will be well.

I’ve had my “sweeper” in the shop and connected to the Krypton but the readings were inconclusive so I’m booked in to have it on the Roller Brake Tester next week ! If all else fails there is a Bloke in Leatherhead who is apparently an A.C.E. at tuning brushes up so I’ll ship it down to him but I can’t find his address so can anyone help me on that score ! Cheers Bewick :wink: :laughing: :laughing: :laughing: :laughing:

This is his drop off address

Kentigern Drive, Crowthorne, Berkshire, RG45 7EG

Hope this helps.

Dave…

So Dave the Leatherhead connection is just a “Red Herring” and is maybe just where the Secure Accommodation is located at the times of The Full Moon ? If I sent it c/o Matron she might beat him with it ! Cheers Dennis. :wink:

Bewick:
So Dave the Leatherhead connection is just a “Red Herring” and is maybe just where the Secure Accommodation is located at the times of The Full Moon ? If I sent it c/o Matron she might beat him with it ! Cheers Dennis. :wink:

The Leatherhead address has no internet connection, so he can only post whilst medicated at his second home…

Carryfast:
By definition you can’t possibly derive or arrive at a cylinder pressure figure by reference to a figure derived from force x leverage and the resulting torque figure at the flywheel.
…blah.

Yes you can. I did it up there^^^. The derivation which you say you “trashed” came up with the BMEP, which is, by definition, a cylinder pressure. You can’t “trash” a correct derivation- every step can be verified logically. It is beyond argument. You should ask those school children for some tuition in simple maths. IIRC, that derivation uses pre-GCSE algebra, so even the thick kids smoking behind the bike shed should be clever enough to educate you.

:smiley:

epi-eng.com/piston_engine_te … dstick.htm

‘‘BMEP is purely theoretical it has nothing to do with actual cylinder pressures’’.

‘‘By looking at the equations’’ ‘‘you can easily see that BMEP is simply torque per cubic inch of displacement.’’

As he would see if he tried to boost an F1 engine to even its stated specific peak torque figure BUT at 1,200 rpm.
The figure would be exactly the same but the engine wouldn’t survive it.Why is that when supposedly the cylinder pressures would be exactly the same according to the BMEP figure.

Would you both prefer an AEC broom or a Rolls one.

[zb]
anorak:

Carryfast:
By definition you can’t possibly derive or arrive at a cylinder pressure figure by reference to a figure derived from force x leverage and the resulting torque figure at the flywheel.
…blah.

Yes you can. I did it up there^^^. The derivation which you say you “trashed” came up with the BMEP, which is, by definition, a cylinder pressure. You can’t “trash” a correct derivation- every step can be verified logically. It is beyond argument. You should ask those school children for some tuition in simple maths. IIRC, that derivation uses pre-GCSE algebra, so even the thick kids smoking behind the bike shed should be clever enough to educate you.

Tell us did your bs ‘derivation’ match specific peak torque measured at the fly wheel x 2.464 yes or no.I actually saw no engines ( like TL12 or Eagle ) being referred to in that bs.

So tell us more about why an F1 engine can’t produce its stated peak specific torque figure at 1,200 rpm.
It would obviously only need exactly the same cylinder pressure to do it by your class room paper bs.

Carryfast:

[zb]
anorak:

Carryfast:
By definition you can’t possibly derive or arrive at a cylinder pressure figure by reference to a figure derived from force x leverage and the resulting torque figure at the flywheel.
…blah.

Yes you can. I did it up there^^^. The derivation which you say you “trashed” came up with the BMEP, which is, by definition, a cylinder pressure. You can’t “trash” a correct derivation- every step can be verified logically. It is beyond argument. You should ask those school children for some tuition in simple maths. IIRC, that derivation uses pre-GCSE algebra, so even the thick kids smoking behind the bike shed should be clever enough to educate you.

Tell us did your bs ‘derivation’ match specific peak torque measured at the fly wheel x 2.464 yes or no.I actually saw no engines ( like TL12 or Eagle ) being referred to in that bs…

It’s all up there^^^. Not yes, no. 4.π is the constant. Don’t know where you get the 4.22644 from. Don’t tell me you worked it out yourself (I would actually have some respect for you , if you had). Why would I have to mention an actual engine? The equation applies to all engines.

PS are you now agreeing that BMEP is pressure, or is that understanding still the preserve of the older kids?