Propshaft question

Propshaft question

Author
Discussion

texaxile

Original Poster:

2,350 posts

106 months

Thursday 2nd July
quotequote all
Are (or rather, were) propshafts factory balanced ?

I have 2 props, both from identical cars, but the placing and positioning of the thin weights is different on each along the prop. Both are RWD Colts from the 80's, but I'm selling one for someone to use and wanted to make sure before it gets fitted.


TIA Pete.

finlo

1,937 posts

159 months

Thursday 2nd July
quotequote all
The balancing of every one will be different just like your wheels.

stevieturbo

14,879 posts

203 months

Thursday 2nd July
quotequote all
texaxile said:
Are (or rather, were) propshafts factory balanced ?

I have 2 props, both from identical cars, but the placing and positioning of the thin weights is different on each along the prop. Both are RWD Colts from the 80's, but I'm selling one for someone to use and wanted to make sure before it gets fitted.


TIA Pete.
propshafts will...should always be balanced as entire units, and they must retain the original alignment.

And of course, position and size of any weights will always vary.

tapkaJohnD

1,433 posts

160 months

Thursday 2nd July
quotequote all
Don't know about yours, but the ones I do know of (Classic Triumphs) have four bolts to the flange each end. Each four are in two pairs so that the flanges can only be mated in two ways. This allows four ways the shaft can be fitted! and that can affect balance.

AA CC Perfect
AB CC Ok, bit vibration
AA CD Ok, bit vibration
AB CD OMG! This car will vibrate to pieces!

If yours has more bolts, then more possibilities, unless they are spaced to allow only one way at each end.
John

Zener

17,054 posts

177 months

Friday 3rd July
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What Stevie and Finlo said above

texaxile

Original Poster:

2,350 posts

106 months

Sunday 5th July
quotequote all
Thanks for the info guys.

The alignment of the prop is spot on, as it is still untouched, although it'll need a new donut sometime soon. One of the weights is also a bit loose, so I'll dab a tiny bit of weld on it. They're steel weights, not lead.