Out with the old........in with the new

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Yep especially when it's a Sportmotive Evolution chassis

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Standard drive shafts with uprated CV joints, (not in yet) TR6060 6-speed box, 3mm thick stainless chassis stiffening closing plates front and back too

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The designer says it does, I guess they wouldn't have gone to the bother of putting there if it had no effect.

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I'm no expert but it's just in front of the diff which is a high stress and fairly open area so maybe helps to resist torsion

Edited by eff eff on Tuesday 14th June 22:50

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I think there are a few different options so I'll let Ian at Sportmotive www.sportmotive.com give you a price

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You're right, apart from a bit of surface rust on the N/S/F upper wishbone the powder coating on my original chassis is intact and just dirty, so why change the chassis? Well we all know how hot the engine bay gets, the 5 litre RV8 was hot but the LS3 is really hot even with a larger ali rad and an increase in the total coolant volume. The new chassis is wider and allows for backward running exhausts which will reduce the under bonnet temperature. The chassis designers took me through a computer programme showing the geometry and behaviour of the original chassis, and then the behaviour of the revised geometry of the Evolution chassis, the revision will give T car handling or better, so happy days.

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GlynMo said:

eff eff said:

I'm no expert but it's just in front of the diff which is a high stress and fairly open area so maybe helps to resist torsion

Edited by eff eff on Tuesday 14th June 22:50

Me neither, but I'd have thought that the plate as fitted could flex in any direction. Sorry, not trying to be critical but to understand. I can see that a flat plate (if it were possible to fit one) would prevent the chassis rails moving towards or away from each other but, with the curves in it, I don't see how the fitted one would do even that. Perhaps someone who knows will come along soon.

I had a chat with the designer, I was wrong the plate is not there to increase torsional stiffness that is provided by the cross-bracing. The plate has two functions one to protect the exhaust and second to provide a degree of longitudinal stability preventing spreading of the chassis rails. There is another 3mm thick plate at the front which is flatter and serves a similar purpose.

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For Matthew Poxon

I think you saw my car at the growl, the underside is the really cool bit here are a few pics of the Evolution chassis,
I have to say a huge thank you to the guys at Sportmotive for a superb job, and the car is amazing.

Edited by eff eff on Friday 22 July 22:19

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vaurien said:

no ciritic ... insperation only ...



for a better air flow on exhaust....



isolation for jam heat inner city and / or traffic jam outside of the chassis....



heat & fire protection in one....






alu - fibre - alu composite heat shield outside of the chassis....


Regards


Gregor

Edited by vaurien on Sunday 24th July 22:30

Wider chassis so no room for a blanket but we wanted to keep the heat off the chassis so elected to go inside the chassis with the Nimbus ali heat shield



Exhaust mounted heat shield for the chassis, oil filter and starter with and air gap to lose heat



Crossover silencer box with breather holes in the plate sits nicely in the airflow

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I don't think your notes are too late, what Sportmotive did works very well to contain the heat from 6.2 litres and two exhaust pipes! Those pictures are not the finished article they were taken during the build. The only place that I can feel any heat, and it is not much, is around the handbrake area and there is always going to be a slot in that area as there is in yours as the lever attaches to the chassis. The gear lever, the floor and tunnel are not even warm. Next time the centre console is off I will try to isolate the handbrake a bit more.

Edited by eff eff on Monday 25th July 17:51

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So err............what do you think of the important bit......the chassis!!

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Well done Duncan you won't regret it.

As for air con, with the manifolds and secondaries away from the front of the engine I think it would easier to fit than on a standard set up.