Best 17.5 brushless motor for off road?
11-17-2008, 09:25 PM
#16
Most people are running a higher FDR then me. This is a short technical off road track. I went to a 6.6 and it was way peppier but wouldnt rev out on the straight even. So I went back down to whine up more on the straight. Ill go back up. Ive checked my temps and it comes off the track at like 120 after 5 minutes and about 150 after 10
11-18-2008, 02:23 PM
#18
i've got the same SP17.5 on my RB5. i geared it at 6.2FDR, cranked up the timing on my RSPro to 100 and it was still a shocker.
i swear, no better than a 540 silvercan and certainly slower than my co27.
if u read the onroad threads, the onroad guys are gearing the 17.5 at crazy FDRs like 3+.
i'm going to try 5.1FDR next time.
i swear, no better than a 540 silvercan and certainly slower than my co27.
if u read the onroad threads, the onroad guys are gearing the 17.5 at crazy FDRs like 3+.
i'm going to try 5.1FDR next time.
11-18-2008, 03:03 PM
#19
What pinion and spure size are you using?
i've got the same SP17.5 on my RB5. i geared it at 6.2FDR, cranked up the timing on my RSPro to 100 and it was still a shocker.
i swear, no better than a 540 silvercan and certainly slower than my co27.
if u read the onroad threads, the onroad guys are gearing the 17.5 at crazy FDRs like 3+.
i'm going to try 5.1FDR next time.
i swear, no better than a 540 silvercan and certainly slower than my co27.
if u read the onroad threads, the onroad guys are gearing the 17.5 at crazy FDRs like 3+.
i'm going to try 5.1FDR next time.
11-18-2008, 03:23 PM
#20
was on 76/32. going to try 68/35 soon.
i don't want to lose the slipper too because our tracks are dusty dirt types.
i don't want to lose the slipper too because our tracks are dusty dirt types.
11-18-2008, 03:45 PM
#22
denny - the guys recommending 7.5 - was that for brushed motors? Or, they could just be pulling your chain to keep you slow 
You gotta gear 13.5 and 17.5 BL motors really high. Even a 10.5 Novak I have in my B4, I've bumped up the pinion size pretty high.
Gear it so you do hit full speed about 3/4 way down the straight. You want corner to corner speed more than top-speed. Racing is won in the corners (typically).
You gotta gear 13.5 and 17.5 BL motors really high. Even a 10.5 Novak I have in my B4, I've bumped up the pinion size pretty high.
Gear it so you do hit full speed about 3/4 way down the straight. You want corner to corner speed more than top-speed. Racing is won in the corners (typically).
11-19-2008, 07:58 PM
#25
what gearing for a novak 17.5 in a t4 im thinking 31/76?
also do you think the trinity 17.5 duo or the novak 17.5 as a better competitive motor?
thanks
also do you think the trinity 17.5 duo or the novak 17.5 as a better competitive motor?
thanks
11-19-2008, 08:11 PM
#26
Well I am running a novak 17.5 and my fdr is 5.0. Running a 72 spur, 36 pinion....I am going to put a 38 pinion in it soon as my motor/esc only gets to about 50c. That will give me a fdr of 4.7! You have to run brushless near the limit to get the best out of it. In comparison to the lrp, speed passion etc, I would have to say it is fairly close. No wonder you are getting sluggish performance running @ 6.9 fdr. How hot is your esc/motor getting?
11-20-2008, 10:08 AM
#27
I've got 29/78 gearing (6.99 FDR) with a Tekin 17.5 in my T4 at Trackside. I had 30/78 but I had some motor temp after 15 minutes of practice, plus the 29/78 just felt better on track.
Spend your money on practice and tires, not a different 17.5. The Speed Passions that are sold at Trackside work just fine.
Spend your money on practice and tires, not a different 17.5. The Speed Passions that are sold at Trackside work just fine.
11-20-2008, 03:23 PM
#29
Hey Aaron the tires are new and it gets plenty of traction. It just keeps feeling slower and slower. I dont know if its getting worse or what. Im going to be buyin a new motor regardless. The new Orion Vortex or Trinity Pulse are what Im going with. If that new LRP X12 comes out soon Ill have a real tough choice ahead of me.