dex210 gearing

[rcjunky]

what gearing should I run with a trinity 13.5 with a bit of boost? I'm just debating what RW spur to get

[zleader]

Looking for the same answer too.. Going to transplant a 13.5 viper into my 210.

[rcjunky]

anyone?

[adey]

Only a guess but I would go with a 23 tooth pinion working up to 25 tooth pinion dependant on the track with kit spur.

[TonyM]

It really depends on the track size. Go with the age old idea of gearing to reach top speed at around 2/3rds of longest track section and/or a motor temperature of around 160 Deg C after 5 minutes hard racing.

With a 13.5 motor you probably will want to drop the spur size from the standard 87T kit. Otherwise the motor housing screws will probably not fit into the plate slots.

I would suggest playing around in the range 81 spur with 28-30 pinion. Even then it may be a tight fit.

Or, if you want to push your motor much further back a 79 spur with a 27-29 pinion. Or even a 75 spur with 25-27 pinion

[adey]

I run a 10.5 with a little timing and use a 24 tooth pinion with kit spur. Seems fine

[Si Coe]

I'm running 83/26 on a 10.5 with a lot of boost. Runs pretty warm but not insanely hot. I'm figuring 83/28 if it will mesh for my 13.5t but haven't tried it yet.

[mattr]

Originally Posted by TonyM

It really depends on the track size. Go with the age old idea of gearing to reach top speed at around 2/3rds of longest track section and/or a motor temperature of around 160 Deg C after 5 minutes hard racing.

Do you mean F? Or 60 Deg C, or 100 Deg C

FWIW, i aim for 60-80 Deg C........ Running the stock spur and a 25T pinion (10.5T motor)

[TonyM]

Originally Posted by mattr

Do you mean F? Or 60 Deg C, or 100 Deg C

FWIW, i aim for 60-80 Deg C........ Running the stock spur and a 25T pinion (10.5T motor)

Woops sorry 160 degrees F and not C.