Originally Posted by
Bondobird
How hot was the motor after the race? I ran a similar fdr on my sonic when i was running it blinky but with 45 degrees on the can. It came off at 160 after a 10 minute main which is still good and safe. That was also in mid 90 degree weather. And I was racing against boosted tekins and yes they were faster in the strait but not enough to pass me. That's on about a hundred foot strait.
well right now my gearing is at 72/28. i have 30 degrees of can timing: stock from factory. im coming off the track at around 160 after a 6min run.
our track is indoor clay with a nice long hundred foot plus straight. i think it's 105ft. it gets to be at least 80 in the building during the day lately.
with the gearing i have now it can keep up on the straight, but i wont be passing anyone. it also jumps pretty good and if i line up i can clear most of the jumps.
Originally Posted by
Grasschopper
I have the same truck and it was suggested by Casper to go 26/76 for 17.5 blinky. FDR around .
http://www.gearing.rcgearhead.com/Gearing/Browse If you put in the XXX-SCT at this link with say a Novak Ballistic 17.5 motor it will also tell you very near 7 for FDR....interestingly if you put in the Tekin Redline 17.5 it will say 8.34 FDR. I have no clue how that thing picks the FDR.
i think i am going to call reedy and ask the tech what fdr the sonics should be geared for. i think it's the motor that determines the fdr.
Originally Posted by
RC_Tomato
What do you mean by toasty? My finger cant distinguish between 130 and 160....all feels hot.
And going down on your spur will drop the gear ratio, putting more load on the motor. This would increase your temps.
160. i've been told this is a safe temp. the thing is i can smell my motor when it comes off the track. it is brand new 2 practice days, 1 race day old. bad motor? another reason to call reedy...
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what determines the fdr? the way the motor is made and the transmission ratio on your rc? im thinking thats it...