Set ups for 125 Fireball outfit

[samtx]

Can anyone assist me with the gearing for 125 Heavy at YP, Adelaide and Angas?

Also is there any differences in the way I would set up my chassis for 125 compared to the way I used to set up my KT?

I'm running 09 Fireball on a BRK Gambler chassis.

Any help would be greatly appreciated thanks.

[tom]

I run a fireball at Adelaide and run 10-93 gearing.

In my opinion when moving from KT to the 125 you should move your seat back around 20mm. If you start off with the same settings and you are getting too much wheelspin this will help.

I run a 2008 BRK and often use the fireball, let me know if you have specific questions and i'll help out if i can.

[mike]

Dont know if this is relevant to you because I run an old Arrow frame. I tend to run the rear end a bit narrower than I did in the KT. Tightens the rear end up for more grip. Its only about 5mm normally but it worked for me.

I run 10 92-3 gearing at dirt trackers. Seems to work well.

I do want to try and get a hold of some carbon fibre reeds and give them a go at some stage this year too.

Hope that helps

[samtx]

Thanks for that guys, do you know if the sprockets on a fireball clutch are the same as a leopard clutch ie will a leopard sprocket bolt up to my fireball clutch drum?

What settings do you use on the jets on the fireball with tiloston carby?

What plugs are you using?

Thanks Sam

[mike]

The Front sprocket is the same as the Rotax. BUT.... If you drop to a 10 tooth you will have to get a bush ordered in as the bearing supplied with the 11 tooth dont fit. They arent too expensive.

Tillotson carb specs from manual are
1-1/4 turns on high
1-1/2 Turns on low
Set them at that and play from there. Dont need much playing though. Check the pop off pressure if you can and set it at 10psi and reseating at around 9psi and the metering lever set at 1mm below the face of the carby.

As for plugs I use Ngk B9eix and B10eix (iridium) which is like a B9egv or b10egv. Normally have the 10 in.
You could also use Denso 27eszu or 29eszu