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R1 Wurks brushless motors

Old 02-07-2018, 11:33 AM
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I'm running a 17.5 v16 in 1/12 stock blinky. The track is 60x60 old gray carpet. I've been experimenting with the motor but not getting the results. Which rotor should be used? I have the 1750 plus the standard and what timing should I be using? The motor typically comes off at 130 area on an 85 rollout with 40deg of timing. Any thoughts or suggestions?
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Old 02-09-2018, 07:17 AM
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Originally Posted by gmintimidator
I'm running a 17.5 v16 in 1/12 stock blinky. The track is 60x60 old gray carpet. I've been experimenting with the motor but not getting the results. Which rotor should be used? I have the 1750 plus the standard and what timing should I be using? The motor typically comes off at 130 area on an 85 rollout with 40deg of timing. Any thoughts or suggestions?
I don't think you are pulling enough amps to wake the beast.

This is how I set my R1's regardless of rotor. I set internal timing to 2.9a draw on an analyzer. Then I continue to add gear to the car until it:
1. Continues to get faster then falls off or fades then back it up a tooth.
2. Gets to about 160-170*F after an 8 minute run.

I am currently running a stock rotor V16 17.5 at 2.9a (I disregard the timing, but its normally at 43* internal) and it is geared at 95mm rollout on a 45x75mm track. It is a beast and is noticeably faster everywhere on the track with this setting. And they run hotter than normal around 160-170 but it performs the best here with near zero fade after 8 minutes...

Going to experiment with my other V16 I built with a 1750 rotor to see where that ends up in terms of lap times and temperatures...

Oh yea, with this track layout, with a 78 spur (*Yes that large) 57 pinion yielded the best performance tires a tad under 41.5mm. So right around 95.18mm rollout.

On your track I'd set 2.9 a, and start adding a tooth at a time to see if it continues to improve. If not, leave timing alone and start reducing gearing a tooth at a time to see if it improves.
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Old 02-09-2018, 03:07 PM
  #588  
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Originally Posted by gmintimidator
I'm running a 17.5 v16 in 1/12 stock blinky. The track is 60x60 old gray carpet. I've been experimenting with the motor but not getting the results. Which rotor should be used? I have the 1750 plus the standard and what timing should I be using? The motor typically comes off at 130 area on an 85 rollout with 40deg of timing. Any thoughts or suggestions?
the 12th scale benefits better with the standard rotor.. The HT rotor reduces the rpm of the motor. you don;t need the extra torque provided by the HT motor.

I would recommend to try a 76spur with a 44 pinion and then adjust either one up or down according to your tires. Timing set at 45 on can. Motor should have good rip and be approx under 130 degrees. Let me know how it works. This timing and gearing is super crazy on a small track. Never a fan of running the motor over 140. If you do, you just decrease the guass rating on your rotor and lose performance. Its not a nitro engine. It doesn't have to be at a certain temp to work better. In fact, the lower the temp the better it is. Normally you want it around 120 or less. THe guass / strength of the rotor doesn't come back if you overheat it above 150. In fact it just gets weaker everytime it hits over 150. And the R1 has way more top end than my TP motor.
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Old 02-10-2018, 08:01 AM
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I beg to differ these things have always ran best to me when they coincide with around 160 ish degreee temps. Maybe my temp gun is off though. Lol
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Old 02-10-2018, 08:03 PM
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Originally Posted by Antimullet
I beg to differ these things have always ran best to me when they coincide with around 160 ish degreee temps. Maybe my temp gun is off though. Lol

I'm with antimullet, I've been running these motors for quite a while and found the sweet spot to be around 160 ! Np
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Old 02-10-2018, 09:45 PM
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Originally Posted by Ggrant
I'm with antimullet, I've been running these motors for quite a while and found the sweet spot to be around 160 ! Np
That's quite dependent on ambient temperature
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Old 02-11-2018, 07:52 AM
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Originally Posted by gmintimidator
I'm running a 17.5 v16 in 1/12 stock blinky. The track is 60x60 old gray carpet. I've been experimenting with the motor but not getting the results. Which rotor should be used? I have the 1750 plus the standard and what timing should I be using? The motor typically comes off at 130 area on an 85 rollout with 40deg of timing. Any thoughts or suggestions?
Do you have the standard 12.5 rotor also??? According to R1wurks, the new torque tuned 12.5HT rotor is the best rotor for stock motors. It's has a lower gauss reading--less torque and more rpm than the 1750ht you currently own.
Since you are running on grey carpet I wouldn't get anything stronger than the torque tuned 12.5HT.
Now if you were on black carpet that would be a different story
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Old 02-11-2018, 07:20 PM
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Originally Posted by idbdoug
Do you have the standard 12.5 rotor also??? According to R1wurks, the new torque tuned 12.5HT rotor is the best rotor for stock motors. It's has a lower gauss reading--less torque and more rpm than the 1750ht you currently own.
Since you are running on grey carpet I wouldn't get anything stronger than the torque tuned 12.5HT.
Now if you were on black carpet that would be a different story
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So the 1750 rotor is the one to run for 17.5 tc stock on black carpet?
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Old 02-11-2018, 08:42 PM
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Originally Posted by DBM
So the 1750 rotor is the one to run for 17.5 tc stock on black carpet?
Original answer was based on 1/12. Iíve been testing the torque tuned in USGT the last few weeks. Our track is very small-85x36 ft with very tight lanes and lots of turns. On a larger track with a more flowing layout I would definitely lean towards the 12.5 torque tuned version. Iím leaning towards the 12.5HT(1700+) on our small track but either it or 12.5 torque tuned(1650) are going to be ALLOT better than the stock 12.5.
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Old 02-12-2018, 02:32 PM
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FDR suggestions for F1?

Medium carpet track. Sometimes a very technical layout and sometimes very flowing

25.5 V16 with High Torque Rotor
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Old 02-12-2018, 05:14 PM
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Originally Posted by iTz Nicholas72
FDR suggestions for F1?

Medium carpet track. Sometimes a very technical layout and sometimes very flowing

25.5 V16 with High Torque Rotor
88/27 64p. timing start at 50* and work your way up to 55* or so. These are internal timing settings so you might be a little more conservative if you have no way of verifying internal timing. As always, run on for a minute or two after any timing changes then check temps
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Old 02-14-2018, 04:05 PM
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Originally Posted by idbdoug
Do you have the standard 12.5 rotor also??? According to R1wurks, the new torque tuned 12.5HT rotor is the best rotor for stock motors. It's has a lower gauss reading--less torque and more rpm than the 1750ht you currently own.
Since you are running on grey carpet I wouldn't get anything stronger than the torque tuned 12.5HT.
Now if you were on black carpet that would be a different story
idbdoug
I'm running a V16 25.5 on black carpet (digital-2 ESC blinky), and I'm consistently getting passed in both corners and in straights. I'm gearing at 43/102 (4.51 FDR, the same as other racers), and since I have the R1 fan strapped to the motor, it is coming off nice and frosty.

I know the 25.5's have a different rotor size at 12.3, but would you recommend me trying out the HT option in my setup?
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Old 02-15-2018, 01:28 AM
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Originally Posted by kaistas
I'm running a V16 25.5 on black carpet (digital-2 ESC blinky), and I'm consistently getting passed in both corners and in straights. I'm gearing at 43/102 (4.51 FDR, the same as other racers), and since I have the R1 fan strapped to the motor, it is coming off nice and frosty.

I know the 25.5's have a different rotor size at 12.3, but would you recommend me trying out the HT option in my setup?
Have you tried smaller spurs like a 96? Try this gearing 96/48 which on my car gives me a FDR OF 3.80. In my experience, anything taller than 96 doesnít work very well. As always donít run more than 2 or 3 mins without checking temps.
-R1wurks has a 12.3HT submitted to ROAR for approval but as of yet hasnít been approved by ROAR.
Post how gearing changed helped or not
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Old 02-15-2018, 08:21 AM
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Originally Posted by idbdoug
Have you tried smaller spurs like a 96? Try this gearing 96/48 which on my car gives me a FDR OF 3.80. In my experience, anything taller than 96 doesn’t work very well. As always don’t run more than 2 or 3 mins without checking temps.
-R1wurks has a 12.3HT submitted to ROAR for approval but as of yet hasn’t been approved by ROAR.
Post how gearing changed helped or not
idbdoug
Previously I've ran 45/92 (with my 1.9 it gives me an FDR of 3.88), and it lost a lot of pep coming out of corners. That problem was what led me to ask some other racers about their ratios, and they all suggesting raising it to somewhere between 4-4.5 for that class.

Motor temps at the lower range were well under 120, even before the fan. With the R1 fan (which moves a LOT of air), I stopped measuring temps completely.

I do have a race this Sat, which is why I'm looking for recommendations. I'll try out what you suggested again, as the R1 comes heavily recommended, and I'd like to try and make this work.
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Old 02-16-2018, 04:19 AM
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Originally Posted by kaistas
Previously I've ran 45/92 (with my 1.9 it gives me an FDR of 3.88), and it lost a lot of pep coming out of corners. That problem was what led me to ask some other racers about their ratios, and they all suggesting raising it to somewhere between 4-4.5 for that class.

Motor temps at the lower range were well under 120, even before the fan. With the R1 fan (which moves a LOT of air), I stopped measuring temps completely.

I do have a race this Sat, which is why I'm looking for recommendations. I'll try out what you suggested again, as the R1 comes heavily recommended, and I'd like to try and make this work.
Try adding timing on the can a degree or two at a time as well. Or find out your internal amp draw as is, then bump it up a few tenths, try again until you get it in the sweet spot. It should be around 150-160 coming off after a main. I have always found R1s like to run at higher heat levels than other cars.

Is this 25.5 VTA, F1, or TC?
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