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Old 03-09-2008, 03:03 PM   #31
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Maybe I am just over geared then at 3.52 vs 3.95 but going from 49 to 50 seemed a lot better on the top end which makes me want to be more around 3.4 or 3.3. I didn't notice any fade though but you may be right, the brushed car (ronnie?) was eating me alive on the straight at the end of the race so maybe I just couldn't feel the slight difference since I primarily drive nitro. I found some settings in the LRP speed control that may help in stock to draw more current that I'll be trying next time out.

Were you running lipo or nimh? at the end of the run I recharged my lipo 3200 pack with 1570mah so I shouldn't have been anywhere near a voltage drop.

I'll skip the super stock class, I don't need 3 brushless motors now that I've already purchased the 17.5 to run stock with you. I'll run mod with you guys all day long though since my lrp came with the 3.5t.
Yes, Ronnie was running brushed/lipo and from what I've seen this is the second case of that combo that runs me down on the straight. He did run 17.5 in his 1/12 and will be going to 17.5 in his TC too. Right Picco007!

I don't think 27t and 13.5 would be fair, so I guess we can stick with 17.5
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Old 03-09-2008, 04:00 PM   #32
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I guess I'm just glad that the 17.5 is basically the same as 27t if everyone would go to it because the maintenance is what took me out of running electric years ago. The last time I ran, I had to cut the comm every run, new brushes and try to get a battery to vent by charging at 8 amps. Nitro isn't exactly maintenance free, but electric is really getting close.
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Old 03-09-2008, 10:22 PM   #33
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I guess I'm just glad that the 17.5 is basically the same as 27t if everyone would go to it because the maintenance is what took me out of running electric years ago. The last time I ran, I had to cut the comm every run, new brushes and try to get a battery to vent by charging at 8 amps. Nitro isn't exactly maintenance free, but electric is really getting close.
It also gives you time to talk to others since the need to cut comms and replace brushes is gone with the use of bl's.
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Old 03-10-2008, 08:00 AM   #34
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Yes, Ronnie was running brushed/lipo and from what I've seen this is the second case of that combo that runs me down on the straight. He did run 17.5 in his 1/12 and will be going to 17.5 in his TC too. Right Picco007!

I don't think 27t and 13.5 would be fair, so I guess we can stick with 17.5

Yep!!!!
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Old 03-10-2008, 09:14 AM   #35
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First week I ran the 17.5 i was not satisified with it and went back to a 27T. I decided to give the 17.5 another try yesterday and geared it up and was very happy with it. I ended up at a 3.80 FDR with 57mm tires for those who want to compare. I run a 7.36 with the same tire diameter with a CO27 and the lap times were almost identical. And I think the motor wanted another tooth or two on the pinion, I jsut didn't have bigger than a 55
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Old 03-10-2008, 11:07 AM   #36
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First week I ran the 17.5 i was not satisified with it and went back to a 27T. I decided to give the 17.5 another try yesterday and geared it up and was very happy with it. I ended up at a 3.80 FDR with 57mm tires for those who want to compare. I run a 7.36 with the same tire diameter with a CO27 and the lap times were almost identical. And I think the motor wanted another tooth or two on the pinion, I jsut didn't have bigger than a 55
So you were at a 44.34mm rollout vs my 48.20 and believe that 49 to 50t was a benefit so you should be good to go except maybe at the end of the race but I really have no basis to talk about that until next week.
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Old 03-10-2008, 12:07 PM   #37
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Thank the Lord for Brushless Motors & NASCAR...........
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Old 03-16-2008, 11:04 AM   #38
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Hey guys here is a video of my 17.5 v 10.5. I am the green car. Its a Kyosho Stallion with 17.5 and the car behind me that ended up winning is an X-ray T2 with a 10.5. I lead 6 out of 8 minutes o9f our 19t touring A Main.

I did notice that at the 5 minute mark that the motor went soft on me. lost its rip out of the corner. My final drive was 3.38 on a 70 x 40 track. I will put a fan on it next week and see if that helps.

I ran the motor against the 10.5 class just for practice before our state race.

I give it 2 thumbs up.

http://video.google.com/videoplay?do...15387996133697
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Old 03-16-2008, 11:41 AM   #39
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all i have to say to that vid is...

wow!
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Old 03-16-2008, 03:03 PM   #40
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Hey guys here is a video of my 17.5 v 10.5. I am the green car. Its a Kyosho Stallion with 17.5 and the car behind me that ended up winning is an X-ray T2 with a 10.5. I lead 6 out of 8 minutes o9f our 19t touring A Main.

I did notice that at the 5 minute mark that the motor went soft on me. lost its rip out of the corner. My final drive was 3.38 on a 70 x 40 track. I will put a fan on it next week and see if that helps.

I ran the motor against the 10.5 class just for practice before our state race.

I give it 2 thumbs up.

http://video.google.com/videoplay?do...15387996133697
Nice vid. I geared my 17.5 down to 3.55 this weekend. It was really fast. It felt pretty close to my 13.5 just a bit smoother. But I also felt the motor go soft around 5 minutes....that meant I was close to thermaliing. During my practice run I'd thermal at 7-8 minutes at that ratio. So far I really like the motor. I am just going have to gear closer to 4.0 for long practice runs.
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Old 03-16-2008, 03:20 PM   #41
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Are you running heatsinks on the 17.5's? I wouldn't necessarily think they're needed, but if things are going south at 5 minutes it might be worth hooking one up.
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Old 03-16-2008, 03:27 PM   #42
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Are you running heatsinks on the 17.5's? I wouldn't necessarily think they're needed, but if things are going south at 5 minutes it might be worth hooking one up.
I just put one on. I may need an extra fan too. But it's needed only if you are pushing the limits of the 17.5...which some may do especially if you have gotten used to the speed of a 13.5.
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Old 03-16-2008, 03:29 PM   #43
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Are you running heatsinks on the 17.5's? I wouldn't necessarily think they're needed, but if things are going south at 5 minutes it might be worth hooking one up.
I am running the Novak heatsink. I am going to try the sintered rotor. Go up a couple of pinions to get my top end back and see how she runs.

I will report back next week.
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Old 03-16-2008, 03:30 PM   #44
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19 of 20 A main cars chose Brushed 27T motors over 17.5 stocks at On Road nationals this weekend...
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Old 03-16-2008, 03:33 PM   #45
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19 of 20 A main cars chose Brushed 27T motors over 17.5 stocks at On Road nationals this weekend...
I think thats what most people expected. Who ran 17.5 (which class, and where did they qual/finish??) - and what motor were they using??

Thanks for any info
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