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Tmaxx something is wrong

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gabev

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I have a tmaxx and went over sOme snow And I just bought it and have drove it about 7 times and after that snow I went to go and it would just rev really really high than I didn't mess with it for a couple weeks than tried it again it ran but was really low on power ran it for about ten minutes than wouldn't go Gain just was revving really high what could be the problem any ideas ?
 
gabev said:
I have a tmaxx and went over sOme snow And I just bought it and have drove it about 7 times and after that snow I went to go and it would just rev really really high than I didn't mess with it for a couple weeks than tried it again it ran but was really low on power ran it for about ten minutes than wouldn't go Gain just was revving really high what could be the problem any ideas ?
Click to expand...

Some punctuation would be a start :D
 
,.,.;,-..?

There's the punctuation you were missing. :p On a serious note, lets get some more information here. Are you using fresh fuel? Fresh glow plug? Is your tune where it should be? If you're unsure, have you tried resetting to the factory specs? I suppose its possible if you went through snow and it got on the carb, you could have some corrosion or just gummy nastiness in there. I don't know what material the components of that carb are made of, so rust may be out of the question.

Try to get a few more details, but as I'm sure you're away now, running in snow is not a good idea. Even running through wet grass is not suggested. I guess nitro motors are pretty sensitive to moisture.
 
pipisugbo said:
,.,.;,-..?

There's the punctuation you were missing. :p On a serious note, lets get some more information here. Are you using fresh fuel? Fresh glow plug? Is your tune where it should be? If you're unsure, have you tried resetting to the factory specs? I suppose its possible if you went through snow and it got on the carb, you could have some corrosion or just gummy nastiness in there. I don't know what material the components of that carb are made of, so rust may be out of the question.

Try to get a few more details, but as I'm sure you're away now, running in snow is not a good idea. Even running through wet grass is not suggested. I guess nitro motors are pretty sensitive to moisture.
Click to expand...

Absolutely, the are sensitive to moisture inside of the piston/sleeve. I know with traxxas fuel it tends to collect moisture, at least their old formula did. It's always a good idea to use WD-40, or anything similar after running a nitro and it's going to be stored for a while. It will help prevent corrosion inside the engine.
 
Lol my bad.. Could that really be it because it ran fine than all of a sudden just reved out like there was no gear or anything ? Than after it sat for 2 weeks ran sluggish than after ten minutes it did the same exact thing? Just high revving? This thing has had maybe 7 tanks of gas in it at the most...
 
If the engine revs high and the truck doesn't move, something is slipping. When it revs, see if the clutch bell spins, then see if the spur gear spins, then check the output from the trans, then the drive shafts and their pins.
 
I agree with Rolex. Sounds more like a transmission(and by that I mean anything from the clutch forward, not just the gearbox) issue than an engine problem.
 
Where is the clutch bell and the spur gear sorry I am new to this whole thing
 
Clutch bell, or CB, is on the front of the engine. That engages through centrifugal force. The CB turns the bigger spur gear on the transmission.
 
So is it all visible or do I have to take stuff apart ?
 
You have to take stuff apart. But you can usually diagnose it before taking it apart.

Take the body off, start it up, hold the truck on the ground with one hand and rev the engine a bit to engage the clutch. See what spins and what doesn't, starting at the flywheel. The next thing that doesn't spin tells you that the previous part is the part that's slipping. Flywheel -> Clutch bell -> spur -> Spur shaft -> transmission output shafts (front/rear) -> wheel axles -> wheel axle nut/shaft -> wheels.

This isn't something you do for an extensive amount of time. It's usually how I adjust my slippers. I hold my truck stationary on the ground (after warming the engine of course), then punch the gas. If the slipper doesn't slip, I run it a bit to cool things off, then loosen the slipper nut a hair and try the "step on it" process again. I do this until I get the amount of "slip" that I want.

Your issue does sound like either your clutch is slipping, your slipper is slipping or your one way bearing in the transmission is slipping.
 
when my maxx did that my clutch had spit out a pad so check for that aswell. other than that and all the other advice u should find the problem. I ran all my nitros daily in the snow and as long as u wipe and clean it down there usually isnt a problem. anytime i have broke something was from what I had done to it. u mighta stripped out your forward gear in the tranny aswell. that is the only problem with winter is the cold stuff does snap a little easier then it would in nice warm weather.. I hope youu get it fixxed and are able to go have fun real soon

I was talking about the clutch on the spur gear.
 

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