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Old 14-12-2008
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Default My Buggy Champ GB-02!

Here are some photos of my Tamtech GB-02 Buggy Champ as it sits at the moment!

I'm still waiting on a few minor parts in order to perfect it and there may be something wrong with my Mamba 25 ESC...

But, she is coming along nicely and really a fun little car that should last a good while.










...wish I could get more height adjustability with the front GB-02 suspension. Other than that, I like it better than my GB-01.
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Old 14-12-2008
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...some photos under shell


my messy impatient dremel work on the 3Racing "V2" servo saver linkage kit. Works perfectly now, just not as pretty, but hardly noticeable.


currently running a slightly older Mamba "25" ESC and 6.8kV motor. I'm having problems. Not smooth, inconsistent reverse, slow build of power, etc. Is this fairly normal??! Never noticed these things when the motor and esc was on my Mini-T....? Any idea what problem may be?







couple quick shots of GB-01 Hornet with minor mods. I like the Tamtech "bumper" kit installed on this one, fits perfectly without any cutting. Has an Associated XPS micro ESC and 370 motor. It's faster than a TamTech hop-up "SPT" red endbell motor. Also Aeration shocks with short bodies and short white coil springs.

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Old 14-12-2008
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I have to mention...
The left rear wheel (from driver perspective) has some pretty bad wobble when holding the car and revving motor... very off balance. I don't know what to do. I've tried to track it down, removing, disassembling, and reassembling, but no luck.
Any one have ideas?

Also, does anyone else here notice that with a very powerful motor, one tire tends to spin more than the other... ? On smooth cement, when I punch the throttle, it actually steers more to the left due to more power going to the right wheel.... is this only me? It is somewhat discouraging.

Oh, and I'm wondering, has anyone here tried a the "Sedan" wheel converters? What set-up do you use? I'm wondering about this a little bit, especially as I move onto more powerful motors. Any info is appreciated!


hmmm ...and my problem with the Mamba "25" esc... hmmm. I wonder if Mamba "Micro-Pro" is any better, or maybe Tekin Mini-rage.


...and also wondering what benefit I would get from fitting a Hitec HS85MG into the car as my steering servo...?


sorry for all of the rambling thoughts and questions.
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Old 14-12-2008
Jamus Jamus is offline
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When you say "sedan converters" do you mean 12mm hex adapters? I have a set made by DrivenProductions made of delrin and they work great. Not sure what you would do for the front of a GB02 though, maybe the wheels would just bolt up with no hex. I've been running 1/10 touring car wheels/tires on my GB01 in parking lots and at the skate park for a while now.


You can also get 12mm adapters from a parts tree from the GT01, the 1/12 tamtech touring cars. That is if you can find it, it as with other tamtech parts have dropped out of most US stores. RCMart still carries them I think.
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Old 14-12-2008
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Quote:
Originally Posted by ShredSLED View Post
I have to mention...
The left rear wheel (from driver perspective) has some pretty bad wobble when holding the car and revving motor... very off balance. I don't know what to do. I've tried to track it down, removing, disassembling, and reassembling, but no luck.
Any one have ideas?

Also, does anyone else here notice that with a very powerful motor, one tire tends to spin more than the other... ? On smooth cement, when I punch the throttle, it actually steers more to the left due to more power going to the right wheel.... is this only me? It is somewhat discouraging.

Oh, and I'm wondering, has anyone here tried a the "Sedan" wheel converters? What set-up do you use? I'm wondering about this a little bit, especially as I move onto more powerful motors. Any info is appreciated!


hmmm ...and my problem with the Mamba "25" esc... hmmm. I wonder if Mamba "Micro-Pro" is any better, or maybe Tekin Mini-rage.


...and also wondering what benefit I would get from fitting a Hitec HS85MG into the car as my steering servo...?


sorry for all of the rambling thoughts and questions.

The stock servo is very good. Just not sure if its as indestructible as the 85MG, so I put one in mine after seeing frogger do his.

The original Mamba 25 is supposed to have old software on it. If you can get the Castle Link and hook it up to a computer, its supposed to help a lot with the cogging (from what I remember reading). The Micro Pro and the Sidewinder Micro are supposed to have the latest software already. The cogging is more apparent on heavier loads too, so maybe less noticeable on the Mini-T.

The wheel wobble might be what's making your car swerve to one side.

How are the 3Racing shocks? I didnt get their set for the Tamtech gear but had one of their Mini-T sets and test fitted. They kind of work on the Tamtech ballstuds (a bit loose) but work better with their own ballstuds. However, the 3Racing ballstuds were just slightly loose when threading into the holes cut by the M2.6 tamiya ballstuds, and this scared me off. Did you have the same experience with your set?

I still just snap on the 3R Mini-T shocks on my GB-02 sometimes to keep it low (to try and keep up with the M-03 minis at the track), I run either Mini-T rear springs or Tamtech front springs in the rear, and I run 3Racing's RC18T rear springs (comes with the shocks) on the front. Trouble with slamming down the GB-02 is that the front suspension is kind of near the soft end of its travel. Should work better on the GB-01.

Hmm, since you have a GB-01, and (had?) a Mini-T, maybe you can give it a try too.
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Old 14-12-2008
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Jamus, yes, I do mean the larger wheels. Now you have me wondering about the front mounts on the GB02...
Very nice car there, threw me off for a second... Is that a GT-01 chassis?? with cut up Fox body on? Are those the 3Racing wheels?
Cool stuff. I've never had a GT-01.


sim, yeah... I think I'll have to look into that Castle link. Maybe just pick myself up a new Micro Pro. Then give my 25 to a needy friend. Not sure if I want to stick with 6.8, or go up, or go down, or what... I'm confusing myself the more I think about it, haha!

Yes, the 3Racing shocks are GREAT, especially when taking cost into consideration. I almost think they are a bit better than the Aeration dampers, although quality of construction may be just a hair lower.
I want to pick up another set of the 3Racing dampers, but they are a bit hard to come by these days... short of importing from HK!?




...little side note... Just a few days I ago I was with my friend in a nearby park with a nice hill and jumps on it, driving his hotshot... Well, a couple of baka gakki (stupid kids) came and started chasing the car around to no end! At first we were having fun making them run around and roll down the hill... until they got more friends together to chase it and eventually one of the kids jumped on it, landing with one foot, and they picked it up and started running around yelling "you're out!". My friend was pissed but I couldn't help buy laughing. Surprisingly, the car is still in pretty good shape, with the exception of a broken front body stud! These little cars are tanks. I know if that was my Mini-T it would have probably snapped the entire front end off.
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Old 14-12-2008
Jamus Jamus is offline
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Oh yeah, Tamtechs are bombproof.

Mine is an original GB01 with GT01 chassis and front suspension. The chassis adds 1 1/4" wheelbase. I only needed 2 parts bags from Tamiya, $18 shipped, but had some other metal hardware leftovers from other tamiya models. I did a little write-up on the swap here. http://www.hyperminis.com/gt01-chass...uggy-t376.html

As to the 12mm hex wheels bolting up to the GB02 frontend. I had a thought. The GB02 front is just a round piece 10mm right, so stock tamtech 10mm hex wheels bolt up? So you maybe could do one of two things. You could take a 12mm hex and drill the center out to 10mm, to slide over the GB02 hub, or make a simple round sleeve/bushing out of 12mm rod with the middle drilled to 10mm. Pretty much anything to keep the wheel centered would work I think. Of course this is all without ever holding a GB02 in my hands. The GB02 suspension always interested me, some day I'll build a mini Sand scorcher out of a GB02.
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