Originally Posted by
streetsports
I figured the 1850 on 4s would come off cold...I'm seeing up to 180 after 13ish minutes with the 4300 geared 18/44...I ran a 20 for a few packs the other day by accident and it came off even colder (that has me stumped).
Are your bearings starting to get old by any chance? And did you notice the motor maxxing out on rpm's at all?
Yea, I figured it would be no problem too. Im really surprised by the heat. I actually thought that the regular pro4 motor would be enough motor. bu that was even workse. 270+ last week on a pro4 1900 motor.
Buggy is brand new. one 6 minute heat and one 10 min main before today. New bearings throughout. That said. I did slide the motor out and check that everything was free and smooth. No issues. Very free spinning. Speed seemed pretty good. It wasnt reving out or anything. Just hitting top speed about when I had to hit the brakes at the end of the longest straight. I could have probably gotten away with one tooth less and would have tried it if it weren't for that damn stripped grub screw on the pinion. But at 18T I think I would have been wanting more top end in the fast part of the track.
Originally Posted by
symmetricon
That seems like some very tall gearing to me. With a 1900kv t8, i though a 17tooth was too much, and this is on a medium sized outdoors track....
Its actually not that tall. (36pmh or so) Im running a 21T on my 1700kv motor in my stock eb48 and Im coming off in the 140s. Same track.
The track was a little loose today. Lots of wheel spin, but it was no different for anyone else and they weren't any other heat issues. I actually overheated a regular Pro4 1900 motor last week in the 10 min main to the point of demagnetizing it. 270+ degrees after the main.
Little sucker finished the race though.
I could feel the power dropping off in the last couple laps though.
Im gonna go through the buggy again just to make sure there is nothing weird going on, but I just think its not quite enough motor.