F3 project wheel choice

[lostinflyz]

Jason's bike runs 125wheels with 250hubs in the rear to handle the power ,the 125 tyres can handle the power no prob ,but it does get twitchy with a small contact patch a full lean ,if its 250 size use 250rims and rubber ,but you have to run very small rear sprockets to get the top speed from a 550,jason sumtimes runs a 30 rear sprocket. Alot of work and development went into jason's tigcraft frame by a man that builds moto2 frames and has built frames for more than 30years ,if you have the cash i would recomend after market rims to get the hubs right and light weight.

gearing is very dependant on tyres, so with 125 tyres jason has to run shorter gearing (30 sounds a lot longer than i was told). On 250 tyres (165's) the SXV is geared around 38-41 depending on the track which is not too bad (unless you run the sxv arm, dooh). Can go to a 17 tooth front sprocket and get another 2 teeth onto it if you like but there can be some clearance issues if your using the swingarm mount on the motor.

you have a chassis there designed around given rim sizes, i would think long and hard before going too far away from it.

[gimpy]

I would use 250 wheels in your 250 chassis, making 125 wheels fit would be hard and look stupid , why i went with 125 wheels was to try keep the bike as light as possible and i have had no problems with tyre wear but sometimes it would be nice to have a larger tyre on the rear on certain corners , it has taken alot of time to get my bike to work well on the 125 rubber and am now getting the benefits of that, I think if you went to 250 rubber you would have a bike that may be abit easier to ride and setup.

[codgyoleracer]

In a world where size counts , my 195 rubber & extra 100cc , didnt mean a thing....... Oh dear - never mind :-). No talent williams.......

[crazy man]

In a world where size counts , my 195 rubber & extra 100cc , didnt mean a thing....... Oh dear - never mind :-). No talent williams.......

you know you should of only had a bucket tire on it

[richban]

I would use 250 wheels in your 250 chassis, making 125 wheels fit would be hard and look stupid , why i went with 125 wheels was to try keep the bike as light as possible and i have had no problems with tyre wear but sometimes it would be nice to have a larger tyre on the rear on certain corners , it has taken alot of time to get my bike to work well on the 125 rubber and am now getting the benefits of that, I think if you went to 250 rubber you would have a bike that may be abit easier to ride and setup.

Thanks for the valuable info. I will chase the lightest 250 wheels I can. There are a few out there its just a matter of getting hold of them. Still lots of bits to acquire but looking forward to mocking up the engine and getting stuck in.

Will try post some picks when I have made a little progress.

[richban]

In a world where size counts , my 195 rubber & extra 100cc , didnt mean a thing....... Oh dear - never mind :-). No talent williams.......

Thats good to know. I'll run 165 and maybe just 50cc more. Problem with projects like this is they take to long. I now need another sponsor. Anyone want to support a 40 year old hard charging bucket racer in F3?

Oh wait the phone is ringing! Bugger no luck, just forgot to return a video.

[codgyoleracer]

Thats good to know. I'll run 165 and maybe just 50cc more. Problem with projects like this is they take to long. I now need another sponsor. Anyone want to support a 40 year old hard charging bucket racer in F3?

Oh wait the phone is ringing! Bugger no luck, just forgot to return a video.

Good things take time