Lotus Elan

TTR driveshafts - do I need reduced droop shocks too?

PostPost by: dunclentdr » Fri Aug 08, 2014 7:51 pm

I am planning to have some TTR driveshafts fitted to my Plus 2 and have been quoted a price that includes reduced drop shock absorbers - I have read somewhere that these aren't required on a Plus 2 - can someone please advise?

I have a pair of Spyder semi-solid shafts also - do these need non-standard shocks?


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PostPost by: Peter +2 » Sat Aug 09, 2014 6:20 am


As far as I am aware, on a Plus 2 you do have to reduce the drop. That it was what the instructions which accompanied my TTR drive-shafts said and that is what id did on my Plus 2.

There several ways to reduce the drop but the simplest and probably the more expensive solution is to use TTR/Koni shocks which are manufactured with the reduced drop as you know.

That what i did.


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PostPost by: PeterK » Sat Aug 09, 2014 6:24 am

When we built a pair of drive shafts with UJs for a Plus 2, they did bind on full droop. With my Miller/Kelvedon CV jointed versions, they don't bind.
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PostPost by: gav » Sat Aug 09, 2014 8:34 am

On my sprint (which has shorter wishbones) I ended up switching from TTR to Sue Millers cvs.
I use the car on the road and for the occasional hills and sprints and two solutions were offered - use limiting dampers (or a wishbone limiter) or stiffer roll bar.
I decided that whilst not perfect, I preferred more travel offered by a CV solution hence the change.
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PostPost by: Plus 2 » Sat Aug 09, 2014 8:40 am

I have just completed fitting my set of Mick Miller CV's (bought them 10 years ago) on the +2 and on full droop they did not completely lock up but as I turned the wheel checking there was definitely a very tight spot that took a bit to turn the wheel so I would say they are right on the limit. When raised just half an inch the wheel turned freely.

I figured that after 25 years I have never seen the car on three wheels and not a gutsy driver, or race the car anyway so doubt the car would ever see full droop. General opinion though from others responses was no one had had any issues and were impressed.

I posted in the Elan discussion section too requesting information on the longevity of them and seeking general opinions on the ride quality but for some reason the post was moved to the drivetrain section for repairs and maintenance so not sure what that had to do with a discussion on the NVH performance of a solid driveshaft :roll:
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