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cracked rotor on velineon
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dirt101
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cracked rotor on velineon - 06.03.2008, 04:41 PM

I cracked the rotor in my VXl rustler today. Motor was running 160 but it was my fault, so I cant really complain. I did some pretty long donuts on 3s(real low gearing) and just had it turning more than 30K for to long.

Im wondering what motor I should go to? I'm not looking at spending a whole lot right now as my CRT is going to be my main truck(have to wait on the MMM though). I really dont need more power but if you guys think more power is needed to keep it cool then I will go with a bigger motor(L size).

I have run an 8xl(geared for 70) in there before when I had my MM, and it was WAY to much power. it was so hard to drive
   
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brushlessboy16
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06.03.2008, 07:19 PM

Neu 1512 or 09, thats not overkill at all


Maybe a l or xl feigao?


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dirt101
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06.03.2008, 07:23 PM

definately not an xl motor. I have done that before and its just to much weigh on the back. makes the truck wheelie at 1/8th throttle. I have considered a 1506 or a 1509 but I just ordered a tekno 1515, MMM, and everything to convert my CRT. I really cant afford a neu right now. I have been looking at the 3300k/v 50mm medusa. is it pretty good? and how long is the velineon motor? I have also been looking at an 8L, but I just dont know yet
   
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skellyo
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06.03.2008, 07:30 PM

A Medusa 36-50-3300 would be great on 3S, or the 4800 for 2S.
   
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azjc
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06.03.2008, 07:36 PM

I have a Feigao 9L on 4s with the CC BEC for gearing I run a Revo 40 tooth spur and RC Monster 16 tooth MOD 1 pinion and I adjust the slipper to control the wheelies if you loosen it too much you lose speed its just something you have to play with. Also if you run on the street and not off road I suggest running the 1/8th scale sedan foams with the 17mm adapters...if you need links let me know
   
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dirt101
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06.03.2008, 07:58 PM

Quote:
A Medusa 36-50-3300 would be great on 3S, or the 4800 for 2S.
yeah thats what I plan to do. I run around on the track on 2s and play at the house on 3s.

Quote:
Also if you run on the street and not off road I suggest running the 1/8th scale sedan foams with the 17mm adapters...if you need links let me know
whats funny is I broke the rotor running the truck on 1/10 on-road tires off of my buddies walmart car. they happen to use 12 mm hex and I just had to shave the wheel. at the end of the run the tires were 159F motor 165F and esc was 114F. lets just say the VXL will roll smoke and lay down black marks with the right tires.
   
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bustitup
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06.03.2008, 11:52 PM

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Originally Posted by dirt101 View Post
yeah thats what I plan to do. I run around on the track on 2s and play at the house on 3s.



whats funny is I broke the rotor running the truck on 1/10 on-road tires off of my buddies walmart car. they happen to use 12 mm hex and I just had to shave the wheel. at the end of the run the tires were 159F motor 165F and esc was 114F. lets just say the VXL will roll smoke and lay down black marks with the right tires.

I use velinions but also a real nice feigao 380c 6L ...fantastic little motor 540 can size ...I think mike here has some..it goes for like $71
   
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big greg
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06.04.2008, 01:46 AM

wow you cracked it at only 160? i had mine at 220 a couple times still works good
   
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dirt101
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06.04.2008, 06:54 AM

It was becuase of the long time it spent at 30 to 35K rpm. probably a good 15 second full throttle donut.
   
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SpEEdyBL
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06.04.2008, 07:10 PM

I don't think it was your fault at all. As long as you stay within the recommended rpm and temperature range, the rotor should not fail period. 30K - 35K rpm is nothing. Nor is 160F.


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dirt101
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06.04.2008, 07:18 PM

I proabably would contact traxxas, but I just got a brand new ESC on waranty the same day I cracked the rotor. I doubt there was a whole lot of voltage sag because I was running my regular gearing on 2.5 inch tires, so I could have been above that.

i have been wanting to get a better motor anyways. nothing wrong with the velineon it just likes to get pretty hot. At the moment Im thinking about waiting until I finish my CRT then getting a 1509 or 1506 neu for it. I may sell one of my dirtbikes so i can really build both trucks how I want.

Would a neu 1506 have enough power to not overheat in a rusty geared for 55? or is a 1509 neaded?
   
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brushlessboy16
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06.04.2008, 07:56 PM

probably an 09, the 06 is really high kv... Offshoreelectics.com just lowered there prices on there neu's


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skellyo
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06.04.2008, 08:28 PM

Quote:
Originally Posted by dirt101 View Post
i have been wanting to get a better motor anyways. nothing wrong with the velineon it just likes to get pretty hot. At the moment Im thinking about waiting until I finish my CRT then getting a 1509 or 1506 neu for it. I may sell one of my dirtbikes so i can really build both trucks how I want.

Would a neu 1506 have enough power to not overheat in a rusty geared for 55? or is a 1509 neaded?
Unless you've got some really trick stuff going on on your Rusty, IMO, it's a sad thing to install a motor in it worth more than the truck itself. While I thoroughly enjoy my VXL Rustlers, they're not worthy of a Neu to me. Just my opinion, but it's far too easy to get tons of power from a Rustler with a much cheaper motor in it than a Neu.
   
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dirt101
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06.04.2008, 08:28 PM

never looked at the k/v options. your right the 06 is to high. im liking the neu 1509 1y though. 3600k/v sounds about right. is it going to be to much power though?
   
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azjc
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06.04.2008, 09:58 PM

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Originally Posted by skellyo View Post
Unless you've got some really trick stuff going on on your Rusty, IMO, it's a sad thing to install a motor in it worth more than the truck itself. While I thoroughly enjoy my VXL Rustlers, they're not worthy of a Neu to me. Just my opinion, but it's far too easy to get tons of power from a Rustler with a much cheaper motor in it than a Neu.
a while back I was thinking about going with a 1509/1y in my rustler and I agree with you about spending $250 on a motor. I came to my senses and went with a Feigao, the 9L is still going strong I think it helps that the rustler is as light as it is.
   
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