240LikesMotiv RC
02-13-2019, 04:00 PM - Wikipost
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06-09-2017, 06:34 AM
#662
I use a modified version of the spreadsheet John Stranahan developed.
Just for sh**ts and giggles. This is a D3.5 17.5 maxilla on the dyno. This is my benchmark.
test volt 4.1(1S)
06-18-2017, 08:22 AM
#664
What is the take-away from this? A little less rpm at 40 degrees timing but more bottom end/torque and efficiency? What's the recommended gearing and timing in 2wd buggy? Thx!
06-20-2017, 06:42 AM
#665
Not sure gearing for 2wd buggy.
If you were running 50* before, try 40 and go up 1 tooth first, then 2 teeth pinion if you are confident motor and esc temps are OK
Check lap times, Esc and motor temps to see what setting works best at the track.
06-27-2017, 11:13 AM
#667
What did you end up gearing it at? I am running between 85-86 mmpr with about 3-4 tenths of fade after 8 mins. Motor has been as advertised
06-27-2017, 04:54 PM
#668
45 degree timing on a analyzer, right around 80mm rollout.
High grip crc black, and a medium size flowing track. These new motors like to rev.
Hero lap was 7.8. Average 8.1 and last few laps in the main of 8 minutes were 8.2 average. Not much fade at all really. The 7.8 was just me driving right once in a race.
High grip crc black, and a medium size flowing track. These new motors like to rev.
Hero lap was 7.8. Average 8.1 and last few laps in the main of 8 minutes were 8.2 average. Not much fade at all really. The 7.8 was just me driving right once in a race.
06-28-2017, 02:56 AM
#669
Great info guys!
I've been running some 17.5 TC on a medium/large asphalt track the past 2 months. I started with similar settings to what I ran inside and found the timing to be a bit too high. Temps were higher than I'd like and fade was an issue. I've been backing off of the timing and adding more gear and that seems to be helping on both fronts. Currently at 45* on the motolyser and 3.9 FDR. Working my way towards trying a low timing/high gearing setup soon, hopefully this weekend.
Congrats Aaron on your new personal best!
I've been running some 17.5 TC on a medium/large asphalt track the past 2 months. I started with similar settings to what I ran inside and found the timing to be a bit too high. Temps were higher than I'd like and fade was an issue. I've been backing off of the timing and adding more gear and that seems to be helping on both fronts. Currently at 45* on the motolyser and 3.9 FDR. Working my way towards trying a low timing/high gearing setup soon, hopefully this weekend.
Congrats Aaron on your new personal best!
07-03-2017, 02:18 AM
#671
21.5 F1 timing?
Hey guys.
Just picked up a new 21.5 on recommendation from LHS. We run 21.5 for F1 instead of the 25.5. FDR of the fast guys is around 3.2. (96/30). Any advice on timing?
Asphalt track, high grip, long straight and sweeper. 120ft+ 15-17 seconds/lap.
Thx
Just picked up a new 21.5 on recommendation from LHS. We run 21.5 for F1 instead of the 25.5. FDR of the fast guys is around 3.2. (96/30). Any advice on timing?
Asphalt track, high grip, long straight and sweeper. 120ft+ 15-17 seconds/lap.
Thx
07-03-2017, 10:56 AM
#672
We were running 2.5-2.8 with a fan and at 42 degrees timing
07-03-2017, 12:03 PM
#673
Mine arrived with 44 on the can. I didn't touch timing, but kept adding pinion through the night. I started with a 38, dropped to the 35 and then gradually went back up. At a 39 tooth the motor was coming off at the same temp as @ 35 and no fade. I didn't change it for the main, but it didn't get any hotter. I might still have more gearing to add. One other racer was running the same motor and was up to a 41 tooth pinion. I still need to work on my driving and find another tenth or two, but the motor held up its end of the deal.It is a short stack, with the S High Rotor.
07-03-2017, 12:40 PM
#674
07-03-2017, 05:24 PM
#675
I started testing below 35 estimated timing Mark on the can on the Dyno.
This are the results.
Since we noticed the power at 30 mark we started testing on the Track.
The results are surprising using RO in low-mid 90mm instead of mid 80mm.
Even though there is close to the same power in the 45 range, what we found was that the motor ran hotter and lost more power at 130*F at 45 setting than at the 30 mark.
From 2 different makes of the newest stator design I've tested below 35* both have shown the same power increase at lower timing.
This are the results.
Since we noticed the power at 30 mark we started testing on the Track.
The results are surprising using RO in low-mid 90mm instead of mid 80mm.
Even though there is close to the same power in the 45 range, what we found was that the motor ran hotter and lost more power at 130*F at 45 setting than at the 30 mark.
From 2 different makes of the newest stator design I've tested below 35* both have shown the same power increase at lower timing.