Hello All,
While pretty well versed in brushless motors for E flight I am a newbie when it comes to BL motors in cars so looking for some guidance.
I have a TT02 that I am running with a old Novak Sport 17.5T motor and a Justock ESC. I have it geared with a FDR of 4.33:1 and it goes alright but being a motor head I wonder if it would be more fun if it was a bit faster. I do like the torque that I get with the 17.5 and I get an easy 15 minutes of duration out of a 4000mah pack.
If I was to switch to a 13.5T motor and gear it appropriately how much of a difference would there be in torque (acceleration) and top end over the 17.5? Any guesses on how much of a hit I would take in duration?
I am not racing, I drive the car 90% of the time on two tennis courts (70' straight?) and set up a little course with field markers. These tennis courts are not all that well used or maintained so the surface is not that sticky.
Thoughts?
Thanks.
Cheers,
Jim
For that car the difference between 13.5 and 17.5 is a pretty good jump in power. But it is by no means "too much" power. I actually felt like I could have used more power out of my TB03 when I was running 13.5, but then you have to consider driveline components too. Going too big in these cheaper on road cars can munch gears if you're not careful. I would stay above 10.5t with that being said.
As far as torque goes, it should be roughly the same between the two, but of course you'll notice far more top end with the 13.5. I can't speak of the runtime you'd get with 13.5, but I would guess maybe a 3 minute decrease? But that's just speculation.