More Q's

[Tarant]

Okay I think my memory is correct but I am not 100%, Will going down in teeth on the pinion have the same affect as going up in teeth on a spur. Second is going down 2 teeth on the pinion the same as going up 2 teeth on the spur, and if not what is the equivalent.

And lastly what is a hot motor. A guy told me that a brushless is hot at 165deg, I dont think that is true but wouldnt a brushed be hotter. So is there a ballpark figure on how hot motors should be.



Thanks

 

[Candyman]

Can't give any info on motor temp.
But gearing is as you said. Increasing the size of the pinion has a similar effect as reducing the size of the spur. However, they are not exact. In a typical setup, the pinion is smaller than the spur. Therefore, changing one tooth on the pinion has a much greater effect on ratio than does changing one tooth on the spur.
Example:
Starting ratio: 20T pinion and 50T spur= 2.5 ratio
1 tooth up on pinion: 21T pinion, 50T spur= 2.38 ratio
1 tooth down on spur: 20T pinion, 49T spur= 2.45 ratio

So you can see changing one tooth on the pinion has a greater effect.

 

[godale03]

Wow... good info. Thanks Candyman.

Tom

 

[Tarant]

Yeah totally that helps a lot,


Anyone have any clue on the motor temp.

 

[HeartBreak]

If you're getting up to those temps on an electric motor, something is seriously wrong. I've never measured the temps on my motors, but I know that much heat could lead to all kinds of issues.

 

[CorradoPsi]

brushed temp keep it under 180
brushless under 140 for non-sintered rotor and under 160 for sintered rotor.

 

[godale03]

Ok... next question.. what is a sintered, and non sintered motor? Thanks guys.

Tom