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Author: Subject: Propshaft angle
Nick

posted on 16/11/19 at 11:48 PM Reply With Quote
Propshaft angle

Just put a pinto in my locost chassis, and realised that the centre line of the gearbox output shaft is 25mm lower than the centre of the diff flange.
Both are running parrallel with each other.
Will the propshaft be able to deal with this difference.
I cannot go any higher with the engine to make them the same.

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AdamR20

posted on 17/11/19 at 06:36 AM Reply With Quote
Absolutely, they are designed to run like that - providing youir phasing is correct (which it should be, because the holes on the flanges are offset to ensure you can't get it wrong!).





[Edited on 17/11/19 by AdamR20]

[Edited on 17/11/19 by AdamR20]

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snapper

posted on 17/11/19 at 07:11 AM Reply With Quote
The video
WOW
I did not know that!

I did know about UJ angles but not the pulse effect





I eat to survive
I drink to forget
I breath to wee my ex wife off (and now my ex partner)

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cliftyhanger

posted on 17/11/19 at 07:29 AM Reply With Quote
The other VERY important angle that seems ignored is the angle each uj moves through. It should not be more than 3 degrees, so on short props it can be an issue.
Caused my prop to fail, and 600 miles from home. And a days work to move engine/gearbox mounts etc
The link below covers just about all you need to know.

https://shiftsst.com/blog/post/driveline-angles.html

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Nick

posted on 17/11/19 at 12:31 PM Reply With Quote
I've jacked up the engine to reduce the distance a bit more. It's reduced to about 20mm now.
I've drawn it out full size and made the gap 25mm to give me room for any mistakes, and measured the angle over the length which is 620mm and it works out about 3 degrees. Which I gather is the magic number.

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