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Serum
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06.03.2007, 08:04 AM

You mean you are using philips head screws to hold the motor in place?

Sounds like you have another problem than a strength issue with the gears.. It needs to be tight in place.
   
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A4DTM
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06.03.2007, 04:49 PM

exactly. I've got hex screws on it now, but I was running with a "dulled" diff gear last night, when it stripped. I'm off now to replace the gear w/ a new one, and threadlocking the hex motor screws, and I'll see if I can get it to hold up for a run.
   
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AAngel
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06.03.2007, 05:03 PM

You guys are putting loctite on the motor screws? I wouldn't even take the chance of any of that stuff getting inside of my motor.

I use the small 3mm lock washers and my motor hasn't slipped yet. That's the thing with these 6061 mounts. You have to watch not to tighten down too much so as not to deform the mount. I found this out with my 8ight mount. My homemade mounts were 7075 and allowed the use of the full size 3mm washers and I could really crank down on those.
   
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BrianG
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06.03.2007, 05:12 PM

Definitely! Without lok-tite, the screws back out pretty quickly. It takes about 10 minutes to loosen on a steel on steel setup. It lasts longer on a steel pinion/plastic spur setup, but still backs out. It's funny though; I've never used lok-tite on the Jato and it runs fine, but the Revo needs it. And I put about the same amount of tightening force on both (so the wrench twists about half a turn, lol). Go figure.
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A4DTM
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06.03.2007, 05:46 PM

it's all in the weight of the vehicle. when I ran my rustler and tc3, I never used loctite.. not even on the pinion's grub screw.

on this truck, I need loctite on the pinion and motor screws, or else I can't get one run in..

all back together now, trying to get ahold of a buddy to help video it, w/ GPS on board..
went to 18/46 gearing, so we'll see if it does 40 like your calc says :)
   
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BrianG
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06.03.2007, 06:33 PM

From other people's testing, the calc is pretty accurate. Of course, it doesn't account for drivetrain drag, wind resistance, etc. And above ~45mph, the speed is derated due to a greater effect of wind resistance.
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A4DTM
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06.03.2007, 08:34 PM

45.3mph.. I updated my LSP thread in the Brushless forum. I'll update this thread w/ a video when I get home later tonight.
   
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A4DTM
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06.04.2007, 02:56 AM

18/46
http://a4dtm.com/lsp/park.avi (27.9mb divx)

or wait for it to show up on youtube here: http://www.youtube.com/profile_videos?user=A4DTM
*EDIT- http://www.youtube.com/watch?v=N1nZhSZ9azs (I still recomend just downloading the avi for quality :))

Last edited by A4DTM; 06.04.2007 at 02:58 AM.
   
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