Still struggling with gearing

[Lee24h]

Im still struggling with the correct gearing on 210 it has a 81t spur and im running a 23 pinion on a 7.5t motor and yet my speedo and motor are still getting hot any help

[mattr]

How tight is the gearbox? I find my electrics get hotter (not dangerously hot, just another 5-10 degrees) If I clamp the three main screws down too tight. Just half a turn allows it to spin much more smoothly.

And how hot are they 70? 80? 90? Thermal shut off?
I get up to 65-75 ish. That gives me another 20 degrees before the cut off.

[Lee24h]

Originally Posted by mattr

How tight is the gearbox? I find my electrics get hotter (not dangerously hot, just another 5-10 degrees) If I clamp the three main screws down too tight. Just half a turn allows it to spin much more smoothly.

And how hot are they 70? 80? 90? Thermal shut off?
I get up to 65-75 ish. That gives me another 20 degrees before the cut off.

Speedo about 70 motor about 60

[OneKiwi]

How long are you running?
Do you have any timing?
What electrics are you running?

[Lee24h]

No timing
Tekin rs pro
vampire 7.5t
5 mins on high grip astro

[OneKiwi]

http://teamnovak.com/tech_info/view_article/26
http://www.petitrc.com/setup/durango...210_GearChart/

Your in the ball park there maybe drop a tooth

What are your settings on the esc?
Ask in the tekin thread as well, or have a look on their site for setups.

http://www.petitrc.com/reglages/teki...tsTekinRS.html

Although there aren't many astro setups there

Holes for airflow?
Is it running smooth without the pinion on?
Check the gearbox so its running smooth. I can recommend shims by the motor plate and don't hulk it with the screws

[mattr]

Originally Posted by Lee24h

Speedo about 70 motor about 60

I wouldn't worry then. According to "the Internet" the thermal cut off on that speedo is over 100 deg C. Even allowing for tolerances, bad measurements, cooling down and so on, you are no way near that!

[Lee24h]

So what fdr are people running on their dex 210 on VERY high grip astro

[OneKiwi]

Did you look at the charts?



Approx so try and test temps
6.5T-10
7.5T-9.5
8.5T-9

If you are still getting heat issues then you are going to have to recheck the gearbox and pinion mesh.
Did you ask in the tekin thread for setups?
PM Randy Pike on here or on RCTech