Decided to make a start on mounting my new rear wing, so to get my head around where it should be I started cutting up my old uprights to get it in the correct position
These are only rough but will work as a template for the holes, I will make the next set follow the contours of the bodywork better
I havent decided what to make my uprights from, I am thinking carbon or maybe 10mm ali with a few holes to lighten it.
You can see compared to my old pics how much lower it sits!
Also threw on a end plate on so i can work out what style of new end plate I will make for this wing
Is it running again Lee? You gotta bring it to Anglesey bud. Your build thread has had >12,000 views so there’s lot of exigers who would love to see the car…
only thing it needs is a day over at phoenix to work out whats needs replacing on the front end, I think its a track rod, then just re-track the front wheels back in, then I can get it on track, so dependent on how im doing money wise as the start of the time attack season is the end of April, I would like to get on track with all the other exiges though and see how the car compares.
well ive just watched a lap of a sr3 radical on slicks and he didnt lift and took it at 110mph pulling 2.2g, now according to Jamie with the EP car, on slicks he can also hold 2.2g so I would say on slicks I wouldnt lift, without slicks I think I might have to lift.
The difference is if I do everything right I will have more downforce than jamies car so that might end up pulling it back.
Lets see who can work out what im going to do, my new wing end plates will be 1.2m long x 1.1m high and will serve 3 purposes, also i cant go higher or further back than my current end plates.
1 They’re going to go all the way down to the diffuser
2 They’re going forward in front of the rear wheels
3 They’re going to piss you off every time you want to take off the rear wheels
the drag of a common vehicle is 30% for the wheels in which 20% of that is the rear wheels, so im going to use the end plate to cover them, this should help at places like snetterton, also because it will extend back i will also widen my diffuser to to have short sections behind the tyres, this will help contain the turbulent air coming off the tires and direct it back so that it doesnt interact with the low pressure zone under the wing.
Got the material in the garage so I might make them this weekend
I’ll pass on the lappery thanks, a long way from the best driver out there and hate driving other peoples cars on track. And lots of trust needed before passengering! Still not sat in with Quo in the orange car Got in with Benja once tho. Rocket was, interesting??
As for the drag from wheels, been looking at the moondiscs that the salt racers run to cut drag. Just need to come up with a cunning way to attach them to an alloy wheel, that doesn’t involve welding.
Made a carbon sandwich today, its currently curing but because i used high strength fast setting resin i dont think i managed to get the clamps on in time before its set so im not sure for a couple of hours whether its properly set on both sides, if theres an issue I can always pump it with resin in the areas its not stuck and then put weight on that area
Trust me Benja, I wasnt really allowed to make it in the house, I just complained enough that she let me!
Sat and did some thinking last night and good news is it looks like im on target to hit 680kg which im really have about as thats been my long term goal for the car.
Had a chat with Force Racing last week who make wheels for minis, they have just started making 16" wheels, so if we can get it right we will still have the same amount of rubber on the ground yet save 11kg of rotational unsprung weight which should make a fair bit of difference.
Did contact Image about making a set, the issue we are working on at the moment is the front wheels due to how far the caliper sticks out
Fitted splitter I made today, needs trimming still to make the 150mm limit and will give me a platform in which to design the rest of the front aerodynamics which at the moment is front diffusers with strakes, end plates and then if I can make it doable a front wing.
With this setup I dont need to unattach the tie bars every time I want to take the front clam off which was a pain to to last time