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Subframe Brace And 3" On A Turbo - Possible?


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#1 Andrpers

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Posted 14 December 2019 - 06:44 PM

Anyone fitted a subframe brace from Regelin in combination with 3" (Tullet)? Is it possible without modifications and still keep the undertray?

 

https://www.regelin-...rame-brace.html

 



#2 swast4

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Posted 14 December 2019 - 10:39 PM

Not sure but I fitted a spitfire one with a 3" tullet and still have undertray

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#3 Ivor

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Posted 15 December 2019 - 04:46 PM

I've got the spitfire one, and although I've yet to fit it, I believe it will fit, I've a 3" exhaust

#4 Spitfire Engineering

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Posted 15 December 2019 - 06:22 PM

Lots of info here :   http://www.vx220.org...ed/?hl=subframe

 

If you send us your email address we will send the fitting guide for the brace options.

 

:)

Gaz



#5 Ivor

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Posted 16 December 2019 - 07:48 AM

Lots of info here : http://www.vx220.org...ed/?hl=subframe

If you send us your email address we will send the fitting guide for the brace options.

:)
Gaz

Gaz was really helpful in ensuring the brace would fit my car, numerous measurements taken and mailed back and for, thanks again Gaz, promise to fit it before spring

#6 Andrpers

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Posted 16 December 2019 - 06:15 PM

Thanks for info Gaz. Is there anyone out there who has fitted the regelin one?



#7 sford

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Posted 17 December 2019 - 10:07 AM

I'll second Gaz, he was great when I was dithering back and forwards on which brace to go for. I actually managed to fit mine and all was fine. 



#8 Spitfire Engineering

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Posted 17 December 2019 - 01:45 PM

Thanks for info Gaz. Is there anyone out there who has fitted the regelin one?

 

 

Regarding fixed straps generally, it is important to understand the 3 dimensional inputs and work with them  not against them, this is not only a function of unrestricted subframe compliance but also a large factor in fatigue.

 

All you are trying to achieve with a toe link brace is to resist the deformation of the subframe structure in the lateral plane, longitudinal and vertical inputs should be left for the subframe to absorb as designed.

The only way to achieve this easily is by mounting the brace with a bearing.

 

:)



#9 siztenboots

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Posted 18 December 2019 - 09:36 AM

if people can overload the structure with rigid front anti roll bars , then maybe some caution about putting forces into areas not designed for them?

#10 Spitfire Engineering

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Posted 18 December 2019 - 01:34 PM

if people can overload the structure with rigid front anti roll bars , then maybe some caution about putting forces into areas not designed for them?

 

Exactly.

Though in the case of a lightly mounted rear toe link brace you are more likely to deform the sheet around the brace mount, someone had a nice image on here some time ago of a buckled section around the turrets where a solid bar style brace had been mounted?

 

The more you try to stiffen the area the more the forces are transferred elsewhere, wether these sections can absorb the new forces or not are not easy to compute but it is very unlikely that they can have a positive effect.

At best you may feel the difference in handling as the compliance is removed from the subframe, at worst you may cause a large reduction in fatigue resistance and subsequent fractures. It's not like the VX subframe is particularly strong in the first place and the fractures may be some way from the usual fracture area, possibly not visible without a detailed inspection.

 

As these issues can be avoided by simply mounting the toe link brace on bearings it becomes a no brainer really.

You get the lateral resistance to help protect the subframe but at no cost in terms of secondary force transfer.

 

:)






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