mr henderson
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| posted on 25/11/09 at 10:31 AM |
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Maximum angle for driveshafts?
Obviously the outer end of the driveshaft has to be at the centre of the wheel, so maybe around 300mm from the ground, but the inner could be lower if
the design of the differential allowed for it. Anybody know what might the maximum satisfactory angle is that the driveshaft CVs could cope with in a
steady state?
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Mr Whippy
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| posted on 25/11/09 at 10:37 AM |
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Any angle other than horizontal will simply greatly increase wear on the joint, probably also over heating the grease at the same time if it’s a large
angle. Depends on how often you are prepared to replace them.
Its not so much the range of travel that the issue, rather if the shaft is not horizontal the ball bearings will be running up & down the groove
every time the wheel turns, rather than the much smaller & occasional movements that going over bumps make.
To give you an idea, it has the same effect on the joint as driving round and round in a circle in a fwd car, i.e. bad news.
[Edited on 25/11/09 by Mr Whippy]
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Chippy
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| posted on 25/11/09 at 10:59 AM |
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Are you talking about Sierra type shafts, then IIRC they have a maximum operating angle of 13.5 deg's, so ideally they should run somewhere near
level, or very close to it, with the car at rest. HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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nick205
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| posted on 25/11/09 at 12:07 PM |
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10" wheels with low profile tryes?
Could get you down to arund 200mm from the ground - might risk bottoming out on the diff casing though if it ends up too low.
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Mr Whippy
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| posted on 25/11/09 at 01:11 PM |
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quote:
Originally posted by nick205
10" wheels with low profile tryes?
Could get you down to arund 200mm from the ground - might risk bottoming out on the diff casing though if it ends up too low.
with such tiny wheels it might top out at 70mph 
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nick205
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| posted on 27/11/09 at 01:56 PM |
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quote:
Originally posted by Mr Whippy
quote:
Originally posted by nick205
10" wheels with low profile tryes?
Could get you down to arund 200mm from the ground - might risk bottoming out on the diff casing though if it ends up too low.
with such tiny wheels it might top out at 70mph
Safe within the speed limit then 
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Fred W B
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| posted on 28/11/09 at 04:40 PM |
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Ive read somewhere that modern CV's will be quite happy at a constant angle of up to 10 deg
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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mr henderson
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| posted on 28/11/09 at 04:43 PM |
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I've read somewhere that the Marlin mid engined car runs considerable angles on their's as it seems that the gearbox output is ahead of
the rear axle, I've been looking for a picture but haven't found anything yet
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procomp
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| posted on 28/11/09 at 05:51 PM |
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Hi
Do some research on the Mojos and Riots where they have had all sorts of problems.
Cheers Matt
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mr henderson
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| posted on 28/11/09 at 07:34 PM |
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quote:
Originally posted by procomp
Hi
Do some research on the Mojos and Riots where they have had all sorts of problems.
Cheers Matt
Got any links, I did 20 minutes on google and couldn't find anything, plenty of mentions of drivshafts but no problems?
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