XRAY - Model racing cars

Today my rear belt broke, it was 2 positions softer then initial instruction manual position (max. loose). The front belt was in middle position. It happened after 15-20 batteries on 10.5T boosted. Should I try to tighten the front belt, because in theory a bit more power should go to the front belt?

Off topic: how many teeth does the 189 mm rear belt have?

Well guys, after talk to Martin Hudy, I tried to use the rear belt 1 step tensioned.
Just one ok? Middle to 1 step.
I ran 3 batteries (something like 36 minutes) and my belt is ok.
No harm at all.
I will continue the test next week and keep you posted.

63t

189mm divided by 3mm (the pitch between teeth) = 63t

If you've tried everything and it fails, get a BD-5 rear belt.

Do you know were I can buy it from? (which website?)

I tried it too, did exactly like you said and ran 5 batteries (5,000mah) and so far is fine....

Lets hope it works

Yeap!
Let's pray.
lol

Just to make it clear, your belt is on 2nd most loose position (one position looser than initial middle position)?

When your belts broke, did they snap suddenly or did they look bad from the beginning? When my belt snapped, almost from the first battery is looked very worn out (from the sides) and after 15 batteries it snapped. My friend runs his belt in the middle position and has no problems so far, when I get my belt I will try it this way.

Flávio, posso estar falando besteira, mas acho que o bumpers da Caar ajudam bastante a estourar correias.
Sabemos que com o gerdiff as correias sofrem um pouco mais, isso aliado aos bumpers... é pancada atras de pancada na correia!

Well I thought the problem is gone... 15 batteries and the belt snaped again.

I installed a ball diff yesterday and will try it to see what will happen

I cannot believe it is not catching on something.

Middle to tight.
1st tight position!

Quem seria Rasta_man?
Com certeza os bumpers da CAAR contribuem sim!
Mas conversando com o Martin Hudy o mesmo me confirmou que já soube deste problema em outros locais.
Mas a CAAR agora está quase zerada de bumper, terminou a reforma da pista e está 80% sem bumper... para ficar 100% sem bumper só fazendo uma pista nova.
Os bumpers que ficaram são quase que imperceptíveis.

Abraço

Hi guys

Just got my t3 2012 done and I'll be going to test it soon.

With all the rear belt questions going on, just want to ask what is the best position to place it ( middle, tighter or looser) for a asphalt track, 13.5 with boost, low to medium traction?

i always use middle
i have never ever had problem with this in modified,blinky 13.5(gm 120+13.5 gm pro) or in prostock neither.

Thanks Stanley, much appreciated

Well guys, no more problem after the Martin Hudy's tip
I'm using the gear diff one step tight and my rear belt was ok.
Problem solved!

I'm sorry Salinet for being a pain in the a**, but I still don't understand what do you mean by "middle to tight"? Starting from the middle position (initial instruction manual position), how many steps left or right (tigher or looser) is that? Today my colleague also snapped his belt, his was in middle position, as is mine in the moment. Tomorrow is race day, and I will try with horizontal position (not upper or lower, the softest position) or the one tighter than that, since the belt has had a few runs (initial manual middle position) and it's already very worn on the side.

All the xray drivers at our club have all switched to the yokomo bd-189L belt, and have had no problems since. Much stronger, and you can run at maximum loose setting with no issue. The standard belt breaks too easily, will need to be modified next year. Running the belt tighter is not an option in 17.5 blinky you loose too much top end speed.