Tmaxx won't budge-now with videos (help please)  
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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Monster Trucks >> Traxxas Monster Truck forum >> Tmaxx won't budge-now with videos (help please) Page: [1]

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Tmaxx won't budge-now with videos (help please) - 3/23/2008 5:11:43 AM   
zud00



Posts: 338
Joined: 1/10/2007
From: Warren, IN, USA
Status: offline 		I have a Savage and my brother bought himself a Tmaxx. It has almost one gallon. I don't know much about Tmaxx's so I thought I'd get some help here.

Here's the problem: The truck starts fine, the motor revs fine, but when I give it throttle, it seems like there is a stripped gear somewhere and the truck will catch occasionally and jump forward only a few inches. I took the transmission apart and all seemed fine. The spur gear is fine. When the motor is idleing, the clutch is enganged and the spur gear spins (I don't know if the spur gear is supposed to be spinning on the Tmaxx while only idling). Anyways, I'm not sure what the prolem is. I don't know how the transmission works in a Tmaxx. Any help would be greatly appreciated.

< Message edited by zud00 -- 3/24/2008 9:21:14 PM >

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RE: Tmaxx won't budge - 3/23/2008 5:47:22 AM   
Macanan



Posts: 1338
Joined: 10/26/2007
From: New Tazewell, TN, USA
Status: offline 		If it's a 3.3 it has an opti drive when and if the batteries are low enough in the truck it has a built in fail safe and wont engage, try and recharge the battery in the truck and then see if it works, I was out today doing a little tuning to my T-Maxx 3.3 and close to the end of the tank of gas, it would catch then stop I give it throttle and it wouldn't move then it would catch again, so I recharged the battery and it was fine.

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RE: Tmaxx won't budge - 3/23/2008 5:54:37 AM   
nitro stan


 

Posts: 377
Joined: 1/7/2007
From: Morrow, GA, USA
Status: offline 		is the slipper clutch to loose?
the drive hub could be shot, its kinda like a clutch. it engages your forward gears.
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXSP82&P=X


< Message edited by nitro stan -- 3/23/2008 5:55:38 AM >

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RE: Tmaxx won't budge - 3/23/2008 2:36:36 PM   
MJAsony2305@aol.com



Posts: 1025
Joined: 12/30/2007
From: Dallas, GA, USA
Status: offline 		clutch maybe?
could be something in the tranny but i think its the clutch

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thats your 2.5 cents but this is my 3.3 cents.
rustler 3.3 come on try me.

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RE: Tmaxx won't budge - 3/23/2008 5:14:45 PM   
zud00



Posts: 338
Joined: 1/10/2007
From: Warren, IN, USA
Status: offline 		It is the 2.5. Is the spur gear supposed to spin while idling? My savage spur gear only spins when the clutch is engaged. I might try to post a video so you can see what I mean. It is hard to describe what it is doing. It might be something like nitro stan suggested but like I said, I know very little about Traxxas.

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Savage X w/LRP z28 spec 3
Bash Big or Go Home!!!

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RE: Tmaxx won't budge - 3/24/2008 1:20:02 AM   
MJAsony2305@aol.com



Posts: 1025
Joined: 12/30/2007
From: Dallas, GA, USA
Status: offline 		yes it is supposed to spin while idling my bro has and s-maxx and it is the clutch i am pretty sure take out the engine take off the clutch bell and show me a pick of the clutch.

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thats your 2.5 cents but this is my 3.3 cents.
rustler 3.3 come on try me.

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RE: Tmaxx won't budge - 3/24/2008 5:15:28 AM   
zud00



Posts: 338
Joined: 1/10/2007
From: Warren, IN, USA
Status: offline 		I don't think it's the clutch, I think it's something inside the transmission. tomorrow i'll try to get a picture or video posted.

_____________________________

Savage X w/LRP z28 spec 3
Bash Big or Go Home!!!

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RE: Tmaxx won't budge - 3/24/2008 12:16:27 PM   
MJAsony2305@aol.com



Posts: 1025
Joined: 12/30/2007
From: Dallas, GA, USA
Status: offline 		ok then

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thats your 2.5 cents but this is my 3.3 cents.
rustler 3.3 come on try me.

(in reply to zud00)
       Post #: 8

RE: Tmaxx won't budge - 3/24/2008 3:12:02 PM   
superman11


 

Posts: 436
Joined: 1/2/2008
From: Ponte Vedra, FL, USA
Status: offline 		This happened to my brothers revo. You can give it throttle and it will dust sit there and rev right? At least that is what my brothers did. We had to take it to our LHS and they said that the diff was stripped. Shure enough when we tore it down all of the gears in the diff were stripped, front and back. Cost him like 40 bucks to fix both.

Hope that helps

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RE: Tmaxx won't budge - 3/24/2008 7:52:14 PM   
zud00



Posts: 338
Joined: 1/10/2007
From: Warren, IN, USA
Status: offline 		Ok-I took 3 short videos of the Tmaxx. When the truck is idling/taking off, it is really jumpy. Like it wants to take off but something is catching.
Here's the first video. I know the linkage is wrong so I adjusted it, but this video just gets you an idea of how it is idling: http://s210.photobucket.com/albums/bb261/dustrado/?action=view¤t=MOV00460.flv

This one it is just sitting in the grass and you can see it kinda jumpy: http://s210.photobucket.com/albums/bb261/dustrado/?action=view¤t=MOV00463.flv

And the last one you can see it accelerate (just about hit my dog! hard to steer and give throttle with one hand.): http://s210.photobucket.com/albums/bb261/dustrado/?action=view¤t=MOV00464.flv

Let me know if the links don't work or if there are any problems with the videos.

< Message edited by zud00 -- 3/24/2008 7:56:53 PM >

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Savage X w/LRP z28 spec 3
Bash Big or Go Home!!!

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RE: Tmaxx won't budge-now with videos (help please) - 3/25/2008 12:53:57 AM   
RC 01 KID


 

Posts: 188
Joined: 1/20/2004
From: MARSHALLTOWN , IA, USA
Status: offline 		Well that chug in the second video is normal, mine has the same problem. I think theres a mod you can do to make it stop.. I'm not sure about your other questions sorry..

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RE: Tmaxx won't budge-now with videos (help please) - 3/25/2008 1:10:12 AM   
zud00



Posts: 338
Joined: 1/10/2007
From: Warren, IN, USA
Status: offline 		Yeah, i've come to learn that this is all normal and i've read about the mod to get rid of it.

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Savage X w/LRP z28 spec 3
Bash Big or Go Home!!!

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RE: Tmaxx won't budge-now with videos (help please) - 3/25/2008 3:00:16 AM   
cummins driver


 

Posts: 401
Joined: 3/3/2003
From: Lancaster, KY, USA
Status: offline 		That looks normal to me. The transmissions internal clutches are bad about making the T-Maxx's jerky. If you wanted to eliminate it all together, a forward only conversion will get rid of the jerkyness. But then you dont have reverse. Lower the idle just a smidgen and the jerking at idle should stop. It looked normal to me other than that.

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