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twisted
December 21st, 2008, 10:49 PM
hello, i run at redneck rc and the run line is about 90 or so feet (small track) i was hoping someone could give me an idea where to start with a gear ratio for the boomerang.

thanks , Geo
JTRAIN
December 22nd, 2008, 12:04 AM
What size tire and what motor?

Joel
twisted
December 22nd, 2008, 12:29 AM
that would help wouldnt it ? sorry. the motor is a novak 13.5 and im not sure on the tire size rite yet.
twisted
January 3rd, 2009, 5:42 PM
iam trying to get as close as my terminator gearing for this track as possible and i cant. the gears would have to be huge. im running a 4.40 finale ratio on my term and i think a good starting point for the dynottech would be there.

any ideas ?
twisted
January 26th, 2009, 2:48 AM
hey guys, im still having a wicked hard time gettingthe correct gering. with the way the car is made getting a spur and pinion combo that works and not having the motor over heat seems to be posing a problem.

rite now im running 115/60 with a tire size that is about 2.55 + or - . im running 64 pitch gears,a novak 13.5 and temps are getting close to 160 and the car isnt as fast speed wise as a gearbox car.

io need some help with this one.
signman501
January 26th, 2009, 8:55 AM
Call Chad at Dynotech. He should be able to tell you where to start.
rj14
January 26th, 2009, 9:32 AM
Geo, if that thing is ratio'd out at a 2.50. Then you need to be at a 2.40 tire, 110/62 to get a final ratio of 4.44. 63 pinion puts you @ 4.37 final ratio.
twisted
January 26th, 2009, 4:43 PM
Geo, if that thing is ratio'd out at a 2.50. Then you need to be at a 2.40 tire, 110/62 to get a final ratio of 4.44. 63 pinion puts you @ 4.37 final ratio.

rj, i know but im close to over heating now at 115/60.
smitty
January 26th, 2009, 8:46 PM
Checked with a few guys and they said 4.40 is close to what you should be at.

The guys at the open wheel were at 3.75 and that was a much longer track?

Not sure if this helps?

Is the car to locked down to the track? Maybe loosen up the car, higher corner speed would be easier on the motor?

Chad
markny
January 26th, 2009, 9:51 PM
i would go to 100/60 with ur tire size and see temp
twisted
January 26th, 2009, 11:55 PM
i would go to 100/60 with ur tire size and see temp

thanks guys for the help. will a 100 spur and 60 pinion mesh together with out the motor hitting the bulkhead 1st ?
markny
January 27th, 2009, 12:21 AM
meshed here before i posted


thanks guys for the help. will a 100 spur and 60 pinion mesh together with out the motor hitting the bulkhead 1st ?
twisted
January 27th, 2009, 12:33 AM
meshed here before i posted


thanks dude.