Lattice alloys vs Sharktooth alloys wearing the same R888s. Sharktooth is 1.5kg lighter (15.5kg vs 17kg) and has more clearance inside for bigger calipers. That's my thought for the day. Charlie





Oh yeah, another thing, don't ever try spraying wheels with white Hammerite - it gives you a rubbish finish . Still at eight wheels for £115 it's not a big deal if the finish is a bit crap.

 

lol I am about to wrap my lattice wheels in 888 for my championship aswell
need to find some sharktooths, might be worth a 10th a lap!!

steve

 

Sharktooths are the new black. Cheap as chips cos nobody likes them but spray them black or white, get rid of the centre caps and you have a light motorsport wheel.

205/50/15s btw on there at the moment. Just squeeze up next to the coilovers I run with 1mm clearance.

Charlie

 

this is why they ran snowflakes on later 4x4 cars as they were lighter !!
needed for homoligation purpose perhaps !!

 

The value of sharktooths has rocketed this year , they are the new in thing lol

See how many sapphs you see at show this year with them on

 

You're telling me! The one I picked up yesterday was a fiver! Paying through the nose for them!

Charlie

 

Sharktooths are kool.

 

ive got sharktooths,they look great on my rs turbo but i wanna try and swap them for sum escos rims as they look a tiny bit too small

 

Got a photo? I saw some on a Fiesta the other day and they looked good. I don't like them on a Sapph though.

Charlie

 

they look really good without centre caps

 

Good info Charlie -always enjoy reading your racecar blog and handling mods. I thought I'd check my wheels after reading your post and see how badly the 17s hurt the handling/feel. I've got luggage scales rather than bathroom ones but my lattice 15" with 888s on came out at 17kg exactly too






Comp 6 spoke MOs with T1-Rs on came out at 18.5kg - an increase of 1.5kg - explains why it feels worse on bumpy roads





Have to look out for some sharktooths to swap the 888s onto

1.5kg is a useful saving per corner

 

Those lattice alloys look immaculate!

 

I think I'll try and hunt down a set of sharktooths and get them done in an anthracite or smoked chrome type finish

 

wow Mike 1, 3kgs per corner is hell of alot, let us know how much the handeling changes between them

i didnt expect wheels and tyres to weigh that much

 

Well I guess it's a 20 % increase in weight between 17" Comps and the lighter 15s.

If you could reduce the weight of your car by 20% ( i.e bring the weight of a 2wd Sapphire down from 1200ish kilos to down under 1000kgs I bet you'd notice some difference

 

Unsprung weight is important. In the most basic terms a lighter wheel/hub/brake combination can have a big impact on handling. My experienced racing mate puts it simply - times the weightloss by three if you are removing mass from the wheels. So I am taking 6kgs out of the weight of my wheels, and 3.6kg from the brakes (see below), for a total of 9.6kg which is effectively nearly 30kgs handling improvement.

I also have a weight limit of 1188kg for me+car. I weigh 100kg. I would like to get the car as close to that as possible - I was 30kg over last year. So removing nearly 10kg gets me closer to the weight limit.

Brakes:
12. Go to the kitchen. Original Cossie caliper with pads weighs 5.3KG (scale has gone right round past zero)


13. Hi Spec brackets and DS3000 pads weigh 1kg


14. Hi Spec calipers weight 2.5kg



Change of calipers saves 1.8kg per wheel in unsprung weight, gives a bigger braking surface area, should diffuse heat quicker and didn't cost too much.

Brakes: https://passionford.com/forum/ford-s...pictorial.html


Charlie

 

I did a trackday with a 100kg mate and when he got out the car felt much more nimble.

Charlie

 

Very true Charlie - God is in the detail. Lotus pay particular attention to this sort of stuff

 

And here they are mounted. Racing tomorrow at Brands.






Charlie

 

good luck tomorrow then. Looking forward to the results and pics...

 

Good luck Charlie!

 

Thanks. I'm feeling very nervous at the moment. I haven't driven the car yet and there are still a few things to do.


Charlie

 

looks lovely, never liked the sharktooths before but they look really good on that

what else have you got planned to get the weight down?