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  #1  
Old 16-06-2009
benknight13 benknight13 is offline
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Thumbs up X12 Nosram in B4

Hi
I have my X12 Nosram Pure in my B4 on a 81 spur gear and 20 spur gear which is what the gear chart says to run at and it wont stop over heating.Is there anyone out there that has had the same problem and know how to sort it?

My mate in touring cars said put a 13mm Rotor in it but is there no way to get it to stop over heating on the standed one?

I have tried going up on pinons and down but nothing is chaging how hot it gets.

Thanks
Ben
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Old 16-06-2009
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is there any latex still in the motor ben?
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Old 16-06-2009
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not on that motor no mate it would just melt if i did that
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Old 16-06-2009
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what turn motor is it ??
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Old 16-06-2009
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Sorry its a 6.5
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Old 16-06-2009
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id say under geared is the issue

im runnig tekin 7.5 on 81 25 think on a 6.5 is around 23/24
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Old 16-06-2009
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Tried all that tried most prinons from 17 up to 24 but still it stays about the same temp well to hot
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Old 16-06-2009
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ive always ran 6.5 from LRP & Novaks on a 24/81 without any problems
i never change it
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Old 16-06-2009
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ben when you say its to hot, how hot is it exactly and how are you testing it for hotness (is that a real word)??all are x12 run hot, but thats not a problem
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Old 16-06-2009
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Ben, I do remember you car sounding a little rough on Sunday. maybe a gearbox service and bearing check/replacement is in order before the weekend.
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Old 16-06-2009
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yes i did strip a spur gear on sunday put fitted new one for final .
It was coming off at about 146c is that to hot?
thanks
ben
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Old 16-06-2009
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that is a little to hot 100c/210f is stated as max temp,but im sure ares are running around 110 120, ill check at the weekend
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Old 16-06-2009
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Thanks i will be there to so will see you there.
Are you runing the x12?
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Old 16-06-2009
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All my X12 motors tend to run very hot (5.5, 6.5 & 7.5) and there all always geared right, they just seem to run alot hotter than other motors, the new lrp/nosram esc's seem to run hotter than the previous ones too
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Old 16-06-2009
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o right well i will try this 20 pinon on it on sataday and see how it goes just only just bought it so dont want it going bang on me.
thanks
Ben
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  #16  
Old 17-06-2009
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Quote:
Originally Posted by Mike Hudson View Post
All my X12 motors tend to run very hot (5.5, 6.5 & 7.5) and there all always geared right, they just seem to run alot hotter than other motors, the new lrp/nosram esc's seem to run hotter than the previous ones too
That's really surprising. I thought LRP engineers were the most skilled. How can they go backwards from 1 generation to another ? Started crack ?
(LRP marketing people have gone backwards scraping the 25year waranty on the newer esc)
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Old 17-06-2009
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The X12 has a special housing so that the rotor stays cold at the inside but the housing become very hot.
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  #18  
Old 17-06-2009
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You read too much marketing pitch...

(all motors have low thermal resistance to the outside shell, even if x12 is better then x11 in that respect, it will not explain a difference of more than a degree or so)
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  #19  
Old 17-06-2009
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Default X12

I run a 7.5 X12 in my B4 and it works a dream 23/81
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  #20  
Old 17-06-2009
benknight13 benknight13 is offline
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With what temp?
With poeple saying they run hot how hot is hot?
thanks for the help
ben
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