poochy

iTrader: (11)

hey guys, after assembling the tc5r with the upperdeck countersunk/o-ring screws-did you guys notice a slight bind between the spur gear and the two orange o-rings that sits underneath the two countersunk screws?

i saw the o-rings sort of chewed away but the spur is not touching the countersunk.

i confirmed everything is shimmed correctly as far as the spur gear center pulley assembley goes.

did anybody else experience this?

thanks

or8ital

iTrader: (38)

The o-ring shouldnt be sticking out from the washer. How tight do you have the screw?

Swampracer

iTrader: (72)

Gearing question (TC5R). Running 17.5 brushless LRP motor with 3800 Orion Lipo, 64 pitch gearing. For an average size track (indoor carpet with rubber tires) what is a good starting point?

Both spur and pinions. Thanks for the help.

artwork

iTrader: (88)

With my Orion 17.5 rubber tire I was running 94/50 3.76FDR on a medium to large size track.

PitNamedGordie

iTrader: (8)

When I had my TC5 I used a 100 tooth spur and 50+ tooth pinions. That will start you around a 4.0 fdr and you can go down from there.

poochy

iTrader: (11)

i got regular tight-not crazy tight but not loose either-all 4 orange rings stick out

poochy

iTrader: (11)

should i loosen them so they dont stick out? duh

Catalyst

iTrader: (5)

3.75 or so is usually about right. I also run a 100tooth spur and have been using a 53T pinion for a 3.77.

Yes they should be under the countersunk washer. Might try without the rings too if you use the ITF chassis and top deck...more resistant to tweak and I tried the rings but found I already had enough torsional flex without them.

AssocRacer

iTrader: (10)

Isn't that the point of the ITF chassis, so you DON'T need things like o-rings under the screws?

artwork

iTrader: (88)

I have done a fair amount of testing with both...simply the o-rings on the top deck create some inconsistencies in the car, but does not really add any additional roll. I find the car is simply better without them.

poochy

iTrader: (11)

i will try without the rings-- should i ditch the countersunk too?

Swampracer

iTrader: (72)

Thanks for the input with the gearing question I had, but I must be missing something.

Do you divide the Spur gear number by the pinion size? 100T spur using a 50T pinion would be a 2 fdr? or am I forgetting something.

What company makes 50T pinions? What dose everyone use?

Thanks guys!!!

artwork

iTrader: (88)

FDR

Spur/pinion*IR=FDR
(IR=Internal Ratio)
(IR on a TC5 is 2.0)

100/50*2.0=4.0FDR

PitNamedGordie

iTrader: (8)

PRS makes pinions up to 65 teeth...and they are good quality too.

http://www.precisionracingsystems.com/catalog/4

Swampracer

iTrader: (72)

Thanks guys.......for helping me out. I already placed a order through PRS.

Cheers