Trailing arms ss1turbo

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hermeticist
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Trailing arms ss1turbo

Post by hermeticist » Sun Mar 17, 2019 1:47 pm

That was exactly my thinking, although, I suspect, there will be some people who want to keep (the look of) originality. RHS (square section tubing) is slightly heavier for the same size section, due to the extra material, but is torsionally stronger and has a greater deflection factor (particularly when a spine is parallel to the deflection load - so probably in direct line with the arc of movement). Obviously, the weight can be reduced by material selection and the best outcome would be: decreased weight (although this will affect spring/damper), increased rigidity (removing unwanted suspension flex and potential changes in geometry) and increased strength. This isn't necessarily unobtainable because, as we know, Reliant are making parts to a price. However, we also need to factor this into the design. I'm not concerned about being able to improve on the original but I will have to investigate the insurance, because I would be supplying a very critical part of a (relatively) complex system. My insurance probably doesn't cover the manufacturing of car parts. If anyone from the club has any knowledge of this I would be pleased to accept advice.



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Post by reliant-reviver » Sun Mar 17, 2019 2:50 pm

Be lovely to see them made with an adjustable inner mount as per the TVR S3 to allow for setup of camber and toe.

As for immediate supply of trailing arms, I have several sets spare available, although not at a give-away price.


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Post by hermeticist » Sun Mar 17, 2019 6:18 pm

This is good, if I can mock up a design from the original and then people with experience of racing, modifying and/or working on the cars can feed in, we could have a top quality product. Maybe we can then also find a suitable droplink replacement or at least make the arm ready to take a different link? Jim, or anyone else, I'd still like to copy the hood stiffeners though :)



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Post by Dcrosby13 » Sun Mar 17, 2019 6:27 pm

I believe alternative drop links have already been sourced from a BMW? From memory I think it was a 3 series


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Trailing arms ss1turbo

Post by philhoward » Sun Mar 17, 2019 7:37 pm

Dcrosby13 wrote:
Sun Mar 17, 2019 6:27 pm
I believe alternative drop links have already been sourced from a BMW? From memory I think it was a 3 series
5 series but I think Corky has found a more suitable candidate since?


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Post by scimjim » Sun Mar 17, 2019 8:01 pm

The BMW ones (and I think most others) need modifications to the thread to fit. It would be good to pick a modern car that we might find replacements for in years to come, and fit that thread?

I found the hood stiffeners and a dead trailing arm - who’s passing Gloucester on their way to Plymouth in the near future? Mikey MikeyBikey, Josh Oaksey?


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Post by hermeticist » Mon Mar 18, 2019 3:00 am

Thank you Jim! With regards to the drop links, it seems to make sense that if we remake a trailing arm it allows direct fitment without the end user needing to make any adjustment. Obviously the other end may require helicoils but at least one end will be ready to go.



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Post by MikeyBikey » Tue Mar 19, 2019 6:43 am

I’m in Somerset at the weekend ?


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Post by Alan SS1 » Sun Mar 24, 2019 8:17 pm

hermeticist wrote:
Mon Mar 18, 2019 3:00 am
Thank you Jim! With regards to the drop links, it seems to make sense that if we remake a trailing arm it allows direct fitment without the end user needing to make any adjustment. Obviously the other end may require helicoils but at least one end will be ready to go.
i can send you measuremnets in autcad format, also i started working on the design on a free 3D drawing package, called OnShape, search for Reliant SS1 rear arm and it should appear, 'should' and you are welcome to use as a starting point.
OnShape is free to use IF you are willing to have the drawings avialble to others, the owner keeps the original version bu tothers can copy/edit as they wish


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Post by Corky » Sun Mar 24, 2019 8:23 pm

philhoward wrote:
Sun Mar 17, 2019 7:37 pm
Dcrosby13 wrote:
Sun Mar 17, 2019 6:27 pm
I believe alternative drop links have already been sourced from a BMW? From memory I think it was a 3 series
5 series but I think Corky has found a more suitable candidate since?
Yes, I’ve found some with the correct M12 1.75 thread. Not actually tried any on the car yet though.


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Post by scimjim » Sun Mar 24, 2019 8:27 pm

Corky wrote:
Sun Mar 24, 2019 8:23 pm
Yes, I’ve found some with the correct M12 1.75 thread. Not actually tried any on the car yet though.
M12 both ends? Details please :D


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Post by Corky » Sun Mar 24, 2019 9:37 pm

Some of my findings are here http://www.scimitarweb.co.uk/sgwrs/view ... 0&p=464983 , but I’m sure I found a few more. They’re probably in my eBay watch list, I’ll have a look.


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Post by Corky » Sun Mar 24, 2019 9:57 pm



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Post by scimjim » Sun Mar 24, 2019 10:10 pm

Just posted in the other thread - ordered a set of the Jag fronts. How long are the originals?


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Post by Corky » Sun Mar 24, 2019 10:16 pm

iirc 95mm between bolt centres, but I don’t have any to hand that I can check.


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