reb
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| posted on 13/6/16 at 01:13 PM |
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Problems with a straight cut transmission or is just the clutch dead?
Hi,
I have a straight cut transmission (Type E, converted with straight cut gears).
When I let the clutch slip (like on a normal car) slowly, to get the car moving from a stop the whole car shakes very badly and it is barely
(if at all) moving.
What is helping a lot is to blip the throttle a bit, just before letting the clutch slip very quickly.
Once the rpm are a bit higher the clutch grabs and the car starts moving like it should.
To get the car going this procedure is very annoying, especially during stop&go and city traffic.
Now I am asking myself if this is normal with straight cut transmissions or if my clutch is just dead?
How do I get rid of this problem? Should I install a "normal" transmission or will a new clutch solve the problem?
Or should I just raise the idle rpm?
I appreciate your help!
[Edited on 13/6/16 by reb]
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coozer
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| posted on 13/6/16 at 01:34 PM |
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Sounds like the clutch to me. Had exactly the same symptoms on my doblo and found the clutch was worn out and the dmf was fubared.. Although I doubt
you have a dmf it still sounds like a weak or worn out clutch.
Also have you checked the cable/pedal for binding??
1972 V8 Jago
1980 Z750
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prawnabie
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| posted on 13/6/16 at 01:50 PM |
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Did you check the presence/condition of the spigot bearing when fitting the updated gearbox?
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Sam_68
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| posted on 13/6/16 at 03:43 PM |
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Yep, definitely sounds like a clutch-related issue.
Straight cut transmissions work just like normal (helical cut) ones, only much noisier. In terms of power transmission, they either do or they
don't - they can't really 'slip'.
Dog engagement transmissions (which S/C boxes often also are) engage the gears in a different way; they're more reluctant to select a
gear from standstill (you sometimes need to slip the clutch a little to let the dogs fall into place), and they're prone to jumping out of gear
if the dogs are worn, but neither of those symptoms reflect what you're describing.
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rusty nuts
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| posted on 13/6/16 at 05:59 PM |
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Sounds very much like the clutch to me .
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reb
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| posted on 13/6/16 at 07:01 PM |
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Thanks for all your effort helping me! 
The car already had the straightcut transmission installed when I bought it.
Is a spigot bearing and a pilot bearing the same thing?
I will also check the clutch cable and pedal for binding.
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britishtrident
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| posted on 13/6/16 at 08:25 PM |
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Sounds like a contaminated or distorted clucth driven plate.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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perksy
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| posted on 13/6/16 at 09:05 PM |
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Distorted clutch plate or broken spring/s in the clutch plate
A spigot bearing fits in the end of the crankshaft
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