weight reduction
Author
Discussion

tuscan_thunder

Original Poster:

1,763 posts

277 months

Wednesday 15th March 2006
quotequote all
What could be removed from a standard S1 to make it lighter (and still road legal) without going and buying carbon bits and the like?

GTRene

22,767 posts

255 months

Wednesday 15th March 2006
quotequote all
...Radio out
...all speakers out
...leighter wheels
...leighter exhaust
...de-cat pipe
...passenger seat out
...all carpetting out
...spare things in car and other stuf, out
...don't put to much fuel in
...don't put to much screen wash in
...lighter battery
...all sound dettening out
...lighter rear window(plastic?)

when you want to get even lighter then thinner materials...or the carbon what you don't like to pay
Thats what come up for now
GTRene

cuzza

2,042 posts

284 months

Wednesday 15th March 2006
quotequote all
Rear window and roll bar cover
Footwell divider and passenger footrest
Passenger seat (replace with kart seat if competing in Production class sprints etc.)
Driver seat adjuster (fix it in the right place for you)
Boot carpet (maybe boot box too?)
Heater matrix
Driving lights

Empty washer bottle

smtwtgh

3 posts

248 months

Wednesday 15th March 2006
quotequote all
Depending on current spec () try not eating for a bit - dead cheap too!

Code Monkey

3,318 posts

288 months

Wednesday 15th March 2006
quotequote all
large bottle of laxatives.

Hollywood Wheels

3,689 posts

261 months

Wednesday 15th March 2006
quotequote all
Code Monkey said:
large bottle of laxatives.


jfrf

406 posts

285 months

Wednesday 15th March 2006
quotequote all
how about removing both front and rear clams.
ok its a vx220 in this case but still...
also how about no doors

www.vx220.org.uk/forums/uploads/post-2-1142420888.jpg

GTRene

22,767 posts

255 months

Wednesday 15th March 2006
quotequote all
I found your ideal set up and you can do it all yourself, just do the same as this guy

GTRene

cej

961 posts

253 months

Wednesday 15th March 2006
quotequote all
nice, I'd better get started on my 'liz

tuscan_thunder

Original Poster:

1,763 posts

277 months

Thursday 16th March 2006
quotequote all
smtwtgh said:
Depending on current spec () try not eating for a bit - dead cheap too!


6ft 1 and 10st 10. Any thinner and it'd be ill!

I like that photo with no clams!

Car was corner weighted the other day - only 6kg difference left to right on the front, 12kg left to right on the rear (with 16litres of fuel and me sitting in) so we didn't adjust anything. However, total weight was 801kg which I thought was a bit high so wondered what I could do to lower it without spending any money.

chuntington101

5,733 posts

267 months

Thursday 16th March 2006
quotequote all
strange question but how much does the baer (no engine and box) rolling chassis weigh????

just wondering how much a Busa oconvertion would reduce weight!

Chris.

bogie

17,102 posts

303 months

Thursday 16th March 2006
quotequote all
not that much - engine and box is about 120Kg

I wouldnt want to run a motorbike engine in a 750Kg car though...they barely last 10-20K miles between rebuilds in Westies and such like

chuntington101

5,733 posts

267 months

Friday 17th March 2006
quotequote all
thanks for the advice bogie!

so the rolling chassis weighs about 630kg for the S1???

thanks Chris.

tuscan_thunder

Original Poster:

1,763 posts

277 months

Friday 17th March 2006
quotequote all
bogie said:
not that much - engine and box is about 120Kg

I wouldnt want to run a motorbike engine in a 750Kg car though...they barely last 10-20K miles between rebuilds in Westies and such like


Hayabusa and bike gearbox should lose about 40kg, so maybe 710kg - lighter wheels, seats out, rip everything out etc and you could maybe just about get 650kg.

A 1500cc Hayabusa should give 210-235bhp depending on state of tune and around 110lb/ft torque. That torque figure's not that far off a standard K.

The bike gearbox should help acceleration greatly, it'd just have run through a diff off a K-series engine car.

I think it is very "do-able" and whilst I appreciate your concerns about longevity, it's not exactly going to be a day to day car! I think if it lasted 15k it'd be worth a go, especially considering how cheap Hayabusa engines are getting. How long would a 190bhp K last between rebuilds?

>> Edited by tuscan_thunder on Friday 17th March 14:22

gooby

9,269 posts

265 months

Friday 17th March 2006
quotequote all
The 'busa engine does not have enough torque for the 'liz. I would suggest another engine or you will have to use forced induction.

bogie

17,102 posts

303 months

Friday 17th March 2006
quotequote all
if its a drag car/weekend/track car then go Hyabusa turbo...light and 350-400bhp possible I guess

S Works

10,166 posts

281 months

Friday 17th March 2006
quotequote all
Surely the cost of fitting a bike engine vs the powergains from the lower weight is hugely out of proportion.

Honda, Duratec or Audi and live with the weight?

bogie

17,102 posts

303 months

Friday 17th March 2006
quotequote all
yup...and thats why the busa engine isnt a popular conversion...Geary did one abotu 3-4 years ago...it didnt last very long....plus not many people want to blow £10K and end up with an engine as flaky as the VHPD...they are paying £10K to get a 200bhp bone stock engine that will do 100K miles and not having to worry about relibility

alan.bennett

120 posts

262 months

Saturday 18th March 2006
quotequote all
Did Mark Waldron not get down to about 550kg dry weight on his CF bodied hillclimb elise? - think i've got an old CCC mag with that in kicking about somewhere!
A.