52 replies to this topic

[turbotoaster]

I did lol

 

Me to, once ive got the car back on the road ill be slowly working from front to rear.

 

Replacing any washers with ali ones and also any non heavy loadbearing bolts and nuts with ali ones.

 

Any steel brackets around the engine will be replaced with ali.

 

Take a mould of the cam cover and make it in carbon

 

Use carbon tube for intake pipes

 

Anything thats ali that isnt heavily load bearing ill make in carbon.

 

Be cool to make an ali exhaust but because the pipework is so short with it being mid engined the EGT might be to high for it.

 

use v-band on exhaust stuff rather than nuts/bolts and flanges

[SteveA]

IIRC Rapidos got his VXT into the very high 700's but he did go a bit nuts. Even replacing the wheel nuts with some crazy expensive exotic metal.

 

 

Be cool to make an ali exhaust but because the pipework is so short with it being mid engined the EGT might be to high for it.

 

 

TI is the way to go.

Edited by SteveA, 06 August 2013 - 10:22 AM.

[Winstar]

I did lol

  Me to, once ive got the car back on the road ill be slowly working from front to rear.   Replacing any washers with ali ones and also any non heavy loadbearing bolts and nuts with ali ones.   Any steel brackets around the engine will be replaced with ali.   Take a mould of the cam cover and make it in carbon   Use carbon tube for intake pipes   Anything thats ali that isnt heavily load bearing ill make in carbon.   Be cool to make an ali exhaust but because the pipework is so short with it being mid engined the EGT might be to high for it.   use v-band on exhaust stuff rather than nuts/bolts and flanges

fcuk me I hope you do don't run your car on the road your lack of knowledge about the engineering behind some of the things your changing and suggesting is spectacular.

[fezzasus]

 

 

I did lol

  Me to, once ive got the car back on the road ill be slowly working from front to rear.   Replacing any washers with ali ones and also any non heavy loadbearing bolts and nuts with ali ones.   Any steel brackets around the engine will be replaced with ali.   Take a mould of the cam cover and make it in carbon   Use carbon tube for intake pipes   Anything thats ali that isnt heavily load bearing ill make in carbon.   Be cool to make an ali exhaust but because the pipework is so short with it being mid engined the EGT might be to high for it.   use v-band on exhaust stuff rather than nuts/bolts and flanges

 

fcuk me I hope you do don't run your car on the road your lack of knowledge about the engineering behind some of the things your changing and suggesting is spectacular.

 

 

Agreed. I think he should post his VIN number and we can add it to the list with Imran's VXR and the NA with CNG conversion.

[turbotoaster]

And you would like to tell me what im doing wrong there.

 

I would like to know which items you see as wrong.....as you can see I mention moving over to ali bolts/buts for none loadbearing locations.....ie im not going to be using them to bolt my wishbones or suspension on.

 

And you can see that I cant make the downpipe in ali because its a track car but to EGTs if it was a drag car then I would because its a common thing to do because your only full throttle for 10secs at a time.

[Winstar]

Replacing any washers with ali ones

I'd suggest you go and research how a bolted joint works Replacing washers with Ali will lead to embedment/deformation and loss of preload, followed by fatigue failure of the bolts when the load is taken by them rather than the joint.

[fezzasus]

Rather than replacing the bolts, get a dremel and cut off any excess thread, you'll be amazed at what you save and won't compromise the joint.

[Claws]

What about the steelwork behind the headrests? That's got to be a few high up Kgs you could lose

[Kieran McC]

What about the steelwork behind the headrests? That's got to be a few high up Kgs you could lose

 Its not there on a S1

[FLD]

How about 'gun drilled' bolts?  You dont see them very often as I believe you have to import them from the US.  Its basically a bolt with the centre drilled out.  Its drilled prior to hardening so the bore is hardened too.  This really is pushing it to the limit.  IMO the bodywork is an easy target.  My 3 vent bonnet was 1.5 kgs lighter than OE without trying.  If you were to remould things and use a foam cored laminate there would be mega savings.

[Winstar]

How about 'gun drilled' bolts?  You dont see them very often as I believe you have to import them from the US.  Its basically a bolt with the centre drilled out.  Its drilled prior to hardening so the bore is hardened too.  This really is pushing it to the limit.  IMO the bodywork is an easy target.  My 3 vent bonnet was 1.5 kgs lighter than OE without trying.  If you were to remould things and use a foam cored laminate there would be mega savings.

There was a version of the 340R with stupidly light bodywork made out of moulded polycarbonate (like RC cars have), not sure it would be stiff enough for a VX though

[fezzasus]

Even just changing the fibreglass from strand to woven roving would allow for much thinner construction without compromising strength. The injected resin and chopped strand approach might be good for mass production, but it does weigh a lot.

[FLD]

The rigidity would come from a resin change if you're going for thin mouldings.  Better still is the cored approach where you have 2 skins separated by a light core (eg balsa or foam).  The thickness makes it very rigid but the lack of actual resin makes it light.  I know theres lots of talk about carbon but if you make a carbon moulding the same thickness as glass its no lighter and to get the same rigidity you cant go too thin.