Do you do this or just go easy on the revs when up-changing to save fuel? I know you’re meant to save more with the former, but surely it causes strain on the clutch, gearbox etc?
I used to block change with a 12 speed Foden Alpha, but find the 8 speed Daf CF seems under strain in similar conditions.
Block change when your empty…i wouldnt advise it with a load on its back.
I would think the gear ratios are wider-stepped on the DAF, so it’s probably better to go through them sequentially if you are loaded.
Down to the truck any daf 8 wheeler I’ve driven with the 8 speed the gap between gears seems quite big and you need the gears.
On the I shift fm I drive it jumps gears especially empty
just said that !
Suppose it depends on the truck I drive scania manual 4 over 4 1st gear is like a crawler second doesn’t give you alot either clutch saver means ill go through all the gears pulling off up hill but generally block change or pull off in 1st if I’m heavy.
so given the choice, with a manual gear box in a truck where possable, we block shift/skip shift. what about driving other vehicle’s such as car’s and vans’, do you block shift in them?
i personally do in my own car and often go through the box (up and down) with out using the clutch…
philgor:
i personally do in my own car and often go through the box (up and down) with out using the clutch…
Why? Is it an automatic?
Some vans and cars change very easy without using the clutch, others not so easy.
In trucks I’m mostly used to 16 spd boxes and always prefer to let the engine do the work, not me.
philgor:
i personally do in my own car and often go through the box (up and down) with out using the clutch…
had a cavalier who’s clutch pedal mounting had broken so had to drive it without clutch for two weeks, traffic lights were fun
Going downhill block changing up is often advised especially loaded
shytalk:
Block change when your empty…i wouldnt advise it with a load on its back.
+1
kr79:
Down to the truck any daf 8 wheeler I’ve driven with the 8 speed the gap between gears seems quite big and you need the gears.
On the I shift fm I drive it jumps gears especially empty
The hired FM we have goes straight to 4th most of the time, racking motor it puts our Dafs to shame.
Scania G400 manual (4 over 4), my general use of the box is 2-4-5-6-7-8 when loaded (26-32T), 3-5-6-7-8 when lightly loaded or I’ve got a 10 metre trailer on. Solo I only use high range (5-8).
I prefer 16th high, slide the clutch just enough to make it smell, but being carefull not to start a fire.
i very very rarely get a manual gearbox in a truck these days but i do block change when the occasion permits
i do block change in my car too both up and down the gears. usually 3rd to 5th joining a motorway and vice versa when leaving a motorway. 1st to 3rd in town or 2nd to 4th if i expect to be sitting at 30 for a while
My cf loaded goes 3l, 4h, 6l, 7l, 7h, 8l, 8h. Never really actually thought about what way I was changing it until now. Standing start to 90 at 41 ton in 7 gears? I’m ok with that. That would be relatively level ground of course.
I try to go down the gears in full gears if possible. 1000 revs goes back to 1600 by the time I have a full change down done and it seems happy at that.
lankyphil:
Scania G400 manual (4 over 4), my general use of the box is 2-4-5-6-7-8 when loaded (26-32T), 3-5-6-7-8 when lightly loaded or I’ve got a 10 metre trailer on. Solo I only use high range (5-8).
^^^^^what he said^^^^^^
When pulling 26t with an xf I used to start off 3l change up to 5h, 7l, 8h pulling away on the flat of course. Was told years ago that every gear change uses a teaspoon of juice don’t know how true it is though■■?
Firms could save more fuel by putting some thought into routing of the deliveries rather than watch how long someone has cruise control on or records their gearchanges.
Here’s an example; We went to a French arty ■■■■■ bakery yesterday in North London with 1x25kg bag of arty ■■■■■ French Flour. It took about 25mins to get there and another 20 to get to our next drop. Today, we deliver 10x25kgs of arty ■■■■■ French flour to the same place!