Correct gear ratio on X1 running on carpet

MikeD · **Joined:** Fri Jan 08, 2016 11:36:12 **Posts:** 2

Hi
I need some help on gear ratios. I am running a 21.5t motor(Thunder Power) with a 2 cell shorty. I put an 80t spur to a 30t pinion (64dp 2.666) on carpet
I ran the car for the first time last night at the Stafford club and the motor got so hot that I think it has melted, it's dead anyway :cry:

The gear mesh was fine and everything was free running.
I have obviously got something wrong big time. I have looked online and people are saying that they are running similar ratios
HELP :oops:

RaThEiSkY · **Joined:** Mon Feb 10, 2014 11:46:05 **Posts:** 15

Hi Mike,
we normally run between 2.4 and 2.6 indoor with our 21.5 Motors so you dont make something wrong.

Do you use maybe to much timing ? Or try another brand to check the temperature ? Maybe there was the problem.

greetings

Jan

MikeD · **Joined:** Fri Jan 08, 2016 11:36:12 **Posts:** 2

Hi, thanks for the reply. Strange as this is around the ratio i'm running! I'm running very little timing on the motor and blinky on the ESC. I have put another motor in so will try again tonight.
Some drivers say to run 3.2:1 and 2.6 is way to high?
Getting confused, could always be a duff motor!

jurejurman · **Joined:** Thu Sep 24, 2015 08:48:45 **Posts:** 3

Hi MikeD, i have asked same Q? ...but depends from the track. I had been runing the 2.6-2.7 ratio and found the motor getting hot (xray x1 /lrp x20 21.5/HW stock 60A/2s shorty / RIDE XR / http://www.genius-racing.com/pista-indoor.html).
In the end I have found/have been recommended for this setup the best GR 2.9-3.1. The temps are fine and the car goes for me. In and from the cornes is more quick. Lap times are better.
....just my 2cent advice

Jurij

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Correct gear ratio on X1 running on carpet

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