In the Canopy video of RockStar 11/28/09 - 164 mph pass

I called Tyson and he said they are a 39 and a 41 and it is set for the taller ratio. He changed it from the short gear ratio to the taller gear ratio.
 
I called Tyson and he said they are a 39 and a 41 and it is set for the taller ratio. He changed it from the short gear ratio to the taller gear ratio.

Yep, that's what I said in post #38.:cheers2:

He thinks he remembers the tooth count, but that doesn't tell us the final drive ratio. There are more that two gears involved.

And the reason he needs a Different set. Probably in the 1.24 range.:confused:
 
I am assuming that you would change the 41 and 39 gears and not the other gears, and if you changed them to a 42 and a 38, you would increase the overall ratio around 5%. Do you know how much you want to change the overal ratio? A change to a 43 gear and a 37 gear would be around 10 to 11%.

Someone please correct me if they think I am wrong and know how it works. I have not seen how this gearbox is set up and how you can change the ratios.

What pitch prop does Delo have?
 
Yep, that's what I said in post #38.:cheers2:

He thinks he remembers the tooth count, but that doesn't tell us the final drive ratio. There are more that two gears involved.

And the reason he needs a Different set. Probably in the 1.24 range.:confused:

with a 39/41 gear setup you can have either a 1.227 or 1.356

swap the 41 for a 40 and you can have either a 1.257 or 1.324

a 40/40 setup is the gearboxes natural 1.290
 
with a 39/41 gear setup you can have either a 1.227 or 1.356

swap the 41 for a 40 and you can have either a 1.257 or 1.324

a 40/40 setup is the gearboxes natural 1.290

Thanks big daddy. I talked to Myrik and he said the same thing. Looks like our slip is a little high. Need to find bigger diameter wheel or he suggested less rack. Frosty's might be just right.:driving:
 
surface drives and the wider tunnel allowing more blade area into the tunnel with that diameter is probably the slip increase... that and probably not quite enough gear.

too bad I didn't know 2 weeks ago, I would of brought back from kw the 16.25/16*/40's that we never use that are just sitting in the back of the truck.

we at least have the gear issue solved.
 
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