Metal removal at rear, opinions

[fax0815]

All the easy things to the chassis are done
The only things left to do on the chassis are:
-roofskin (lots of work)
-headlights with plastic lenses (relatively cheap)
-steering collumn (custom single carbon tube)
-carbonfibre dashboard
-carbon kevlar seats
-carbonfibre sheet bootfloor
-drill loads of holes with a holecutter in all the places were it doesn´t affect rigidity (cheap)

Don´t thinkt there is much to gain from doing changes to the subframe, unless you go for a full custom spaceframe thing, but I recon it will be more rigid but not lighter...

Time to think outside the box...
You should pay more attention to rotating/ unsprung weights:

Iirc 1kg unsprung weight equals 8kg static weight and there is a even bigger difference with rotating mass, which will not just reduce the weight and also help you in terms of acceleration, have a look at google for all the math behind it.

-get aluminium hubs (cheap) http://www.grp4fabrications.com/product_...cts_id=635
-lighter wheels
-don´t know how you with spool diffs in racing, but they´re half the weight of a LSD
-biggest gains can be made from everything before the gearbox (lightened internals)! Flywheel and clutch assembly, go for a smaller, lighter clutch.
What are you running?
I just completed this setup, twin plate carbon clutch, fidanza alluminium flywheel (will get a few more pockets to be even lighter) which works out at more than half the weight of a normal clutch but decreases the moment of interia as well.



This will make a lot more difference, than trying to save more weight on the actual chassis. Unfortunaltly a lot of people underestimate that...

Thats all I´ve got to say about weightsaving...
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