Lotus Elan

Rotoflex couplings

PostPost by: p.faurie » Fri Mar 03, 2017 9:33 am

Found this on uk eBay ref no 192109934226 claim to be good for 160bhp interesting,sorry unable to link the ad.
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PostPost by: 7skypilot » Fri Mar 03, 2017 9:48 am

Here's the link:

http://www.ebay.co.uk/itm/HILLMAN-IMP-C ... Sw4GVYSY8w

Looks interesting for those of us using donuts.
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PostPost by: Spyder fan » Fri Mar 03, 2017 9:51 am

Here's the link http://www.ebay.co.uk/itm/HILLMAN-IMP-COMPETITION-BMW-CONVERSION-DRIVESHAFT-COUPLINGS-/192109934226?hash=item2cbaa4f692:g:wpYAAOSw4GVYSY8w

I think there has been some discussion about this sort of conversion and whether or not it's an effective solution?

EDIT: Gosh Skypilot, you're quick!

Image
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PostPost by: gherlt » Fri Mar 03, 2017 11:52 am

Are they as flexible as the original donuts ?
1964 S1 (engine ready, awainting body paint)
1967 S3 DHC (now adjusted by Brian Buckland, totally calm idle)
1969 S4 FHC (final interior stuff)
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PostPost by: vincereynard » Fri Mar 03, 2017 2:26 pm

160 BHP before the differential is not the same as for a driveshaft after torque multiplication.
Also they would not need much angular flexibility on a propshaft.

Hill climb on a smooth road maybe OK, but I'd be wary of fitting them to a road car.
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PostPost by: elansprint » Fri Mar 03, 2017 4:16 pm

Vince you have hit the nail on the head cannot see them lasting long it is Torque that is the problem
Ian
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PostPost by: Elseezed » Fri Mar 03, 2017 5:49 pm

https://www.facebook.com/photo.php?fbid ... 494&type=3
I considered fitting the BMW couplings, thought better of it, to me it's the angles the driveshafts impose on the couplings. The only good thing is they tend to fail as photo and not break apart like a rotoflex.
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PostPost by: jeff jackson » Fri Mar 03, 2017 7:06 pm

at that price for four, (?270) you are well on the way to fit and forget solid driveshafts.....
Just my opinion of course.
Jeff 72+2
(looking to replace doughnuts with solid driveshafts this year)
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PostPost by: tvacc » Fri Mar 03, 2017 7:39 pm

Will these work on my Elan Series 2. 1966?

I am on waiting list for a set of CV from Trikbits, but I would buy these.

Advice?

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