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gearbox lube
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chrismechanic
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gearbox lube - 11.22.2009, 08:16 AM

hi all...thanks guys, i had a quick test of the truck yesterday, on 5s it seemed to take longer to reach top speed but seeing as we have had lots of rain down here it was impossible to get the power down, wheelies on the dry tarmac and it just spun on the damp.
6s was as usuall virtually uncontrollable, but fun.
yes as these cogs weigh more it will take longer to spool up.
hello redshift, i found the link to be an interesting read and i agree grease is useless above 10 meters per second as it will be flung off so i have been using oil, well i use cam lube which is really thick and sticky, its allways still there when i strip down so i assume its doing its job, i have tryed engine oil but it leaks out through the bearings and any other gap/crack. i think a sealent smeared alloy case will hold oil though.
yes could someone please fix the title??? thanks.
hi rivermaxx, yes its the original 2 speed as i like to climb and go fast,
get the best of both worlds with 2 speed.
alloy and nylon cogs are no good for brushless..too much power for them to take. do you run a mm combo then?
hi neil, haha ye i think you may be right and if so they will be fabricated.
thanks again all...
   
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Rivermaxx
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11.22.2009, 11:53 PM

Quote:
Originally Posted by chrismechanic View Post
alloy and nylon cogs are no good for brushless..too much power for them to take. do you run a mm combo then?
I have MMM esc with a real neu 2700 kv on 6s and have also used a 2200 kv castle neu on 6s. I have multiple 80+ mph passes on my g1 single speed tranny with a UE gear and stock nylon gear in a 11+ pound truck. I also have a few 69 mph doulble wheelys with the same set up.


The current version brushless erevo and new brushless maxx also has steel on nylon gears and has no problems on 6s. I know you are not making more power than me on 6s either. Its probably the shifting under power causing the failure. Single speeds are probably more reliable. Not to mention turning the punch control down to atleast 50 %. It will still do standing back flips with a blip of the throttle at that setting. Check out these gears they are made of titanium really light weight too.

Last edited by Rivermaxx; 11.23.2009 at 12:00 AM.
   
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nylon cogs
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chrismechanic
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nylon cogs - 11.23.2009, 06:19 AM

hi all...
yes redshift thats the stuff, really sticky designed to stay until oil pressure is up.
i think your gears would have worn down in a year to the point they are weak at the tooth, i had my nylon ones for around 6 years till i switched to brushless, they were well worn tho.
i run offroad mostly, have a rear difflock (spool) using the maxx paddles and try to climb the biggest mounds of mud i can find, like formula one offroad.
i think this put a hell of alot of strain on the transmission and is the reason the nylon cogs fail so quickly.
rivermaxx, nice speed pass, 80 mph upside down i bet that put a few scratches in your shell. my truck dont go that fast its geared down to around 40 mph top speed which also puts more strain on the trans.
not shure how much my truck weighs, have to get the scales out and weigh it.
you lost me on the titanium gears? what? where? see ya all....
just looked up on ti gears and apparently there not worth it. might as well use steel
http://www.eng-tips.com/viewthread.c...=252337&page=1
found much more evidence than this but thought you may like a read yourself...

Last edited by chrismechanic; 11.23.2009 at 01:23 PM. Reason: titanium gears, any good?
   
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