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T-maxx problems

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Old 04-25-2008, 11:50 PM
  #1
Mr. Pink
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Default T-maxx problems

Well this is my first official post on RCU,

I just picked up this t-max 2.5 today and i had to replace the glow plug. And now that i got it running it keeps wanting to slip when i give it throttle. I have searched, and i have come up with nothing, I am getting quite frustrated with this already and i haven't owned it for 24hrs yet. I also have checked the gears they mesh correctly. i have tried 2 different sets of gears. i have a 66T gear that came on it,an extra 66t gear and the stripped 72t gear that orig came on the truck. I would appreciate any feedback

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Old 04-26-2008, 01:20 AM
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Default RE: T-maxx problems

It sounds like maybe your spur geaf is too loose. See if you can spin it easily with the wheels on the ground and not moving.
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Old 04-26-2008, 09:13 AM
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Default RE: T-maxx problems

titan the slipper nut.
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Old 04-26-2008, 09:59 AM
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Default RE: T-maxx problems

well i figured out one of the problems, the gear was stripped, I replaced it with a spare i had sitting around(new 66t) and its still doing the same thing. I think i am going to take it to my LHS and have them fix it, seeing that i have no clue what i am doing with a nitro powered truck, I am an electric guy. This is my first Nitro. So i am going to need a lot of help.
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Old 04-26-2008, 10:37 AM
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Default RE: T-maxx problems

Well like one of the others mentioned it sounds like the slipper nut that holds the spur gear on is too loose. Try tightening that nut down all the way, then back it off approx. 1/4 turn...
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Old 04-26-2008, 11:13 AM
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Default RE: T-maxx problems

Ok thanks Matt,I will try that. When it was running i let my fiancee drive it and she hit the tree thats at the end of out driveway. then all the problems started. I dont know if something else screwed up or if everything just came out of alignment.
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Old 04-26-2008, 11:19 AM
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Default RE: T-maxx problems

Sounds like the hit of the tree may have just pushed the slipper plate and the spur out of alignment just a bit
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Old 04-26-2008, 11:25 AM
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Default RE: T-maxx problems

what all will that involve to fix? The hobby shop i go to is 45min away, and gas prices suck. I know that i will be picking up a few extra spur gears. any other parts i should buy a few of?
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Old 04-26-2008, 11:48 AM
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Default RE: T-maxx problems

Imo yes, I would get some extra bulkheads, a-arms(get rpm a-arms though, much tougher and more durable), spur gears obviously, extra fuel tank(cause ya just never know when something unexpected might happen), extra body posts for front and rear, shock rebuild kit.
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Old 04-26-2008, 12:03 PM
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Default RE: T-maxx problems

the truck has brand new integy reservoir shocks on it. I have a set of extra RPM arms i may even have a new tank. I just want to run my truck.
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Old 04-26-2008, 01:08 PM
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Default RE: T-maxx problems

Well thats all good if it has brand new shocks on it, but u probably should still get a rebuild kit for them, so when they wear out, instead of having to get all brand new one, u can just rebuild the current ones(that is if they make a rebuild kit, which i would think they should). And yes it is undestandable to want to like run the truck, but u asked what parts it is good to have spares of and I told ya...[8D]
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Old 04-26-2008, 05:44 PM
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Default RE: T-maxx problems

Ok well i fixed the stripped gear, but i now have another problem. My maxx has a venom failsafe installed on it, it keeps shutting the truck off randomly. I was told by a friend to just remove the failsafe and run with out it, but now the truck wont even crank over.
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Old 04-26-2008, 07:01 PM
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Default RE: T-maxx problems

Well for one thing, make sure u have enough battery power to the point that its not causing the failsafe to kick in due to low battery, and also it sounds like u may need to re-set the failsafe again, even if it has already been set up. And a 3rd thing is, if u still use the opti-drive system(I mean IF u have it and still use it) then u might want to take one of them off because I do believe the opti-drive already has a failsafe built into it..
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Old 04-26-2008, 07:21 PM
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Default RE: T-maxx problems

hmm well now then where is the opti-drive located? and i think my ez-start is fubard it just spins it doesnt crank the motor anymore. Gah, i think i ended up with a lemon.
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Old 04-26-2008, 07:27 PM
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Default RE: T-maxx problems

I feel your pain take a look at my thread

http://www.rcuniverse.com/forum/m_7422375/tm.htm
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Old 04-26-2008, 07:28 PM
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Default RE: T-maxx problems

The opti-drive on a 3.3 tmaxx or 3.3. revo is located toward the right front of the truck inside the receiver box on a revo 3.3 and I think its near the same location on a tmaxx 3.3 (if the tmaxx 3.3 has one which I believe it does)
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Old 04-26-2008, 07:49 PM
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Default RE: T-maxx problems

Matt i have a 2.5, I am getting really frustrated with the truck. i am going to buy new batteries tomorrow and figure it out tomorrow.
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Old 04-26-2008, 08:04 PM
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Default RE: T-maxx problems

ez start is the OWB and its cuz the truck is rich.
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Old 04-26-2008, 08:08 PM
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Default RE: T-maxx problems

at least thats what i am assuming.
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Old 04-26-2008, 08:36 PM
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Default RE: T-maxx problems


Quote:
ORIGINAL: Mr. Pink

Matt i have a 2.5, I am getting really frustrated with the truck. i am going to buy new batteries tomorrow and figure it out tomorrow.
which 2.5 do u have? The revo or the tmaxx?
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Old 04-26-2008, 08:47 PM
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Default RE: T-maxx problems

T-maxx.
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Old 04-26-2008, 08:48 PM
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Default RE: T-maxx problems

Matt,

do you have any Idea why the ez-start wont work?
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Old 04-26-2008, 09:13 PM
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Default RE: T-maxx problems

hay matt do u like revo or tmaxx better
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Old 04-26-2008, 09:15 PM
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Default RE: T-maxx problems

and it definatly sounds like that tree screwed up all the alignment
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Old 04-26-2008, 10:59 PM
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Default RE: T-maxx problems


Quote:
ORIGINAL: Mr. Pink

Matt,

do you have any Idea why the ez-start wont work?

Well from the sounds of what u were describing, it could be ur one way bearing that the ezstart gears turn that sits inside the gear case is shot. But before buying a new one, I would first try giving it a good cleaning with denatured alcohol. Get some of that, and let it soak for awhile in that and it will dissolve all of the gummed up fuel/oil that may be on the inside of the bearing. Once its dry its a good idea to re-lubricate it with some type of lubricating oil like after run...
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