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  #1  
Old 05-02-2011, 08:50 PM
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Default R/C Tonka dump truck

Here's a low buck Tonka conversion.




Video clips
dump mechanism
http://www.youtube.com/watch?v=lRCa5...eature=related
Finished truck
http://www.youtube.com/watch?v=qjeMT...eature=related
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  #2  
Old 05-02-2011, 09:02 PM
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Thumbs up Re: R/C Tonka dump truck

Pretty cool dump truck!
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  #3  
Old 05-02-2011, 10:47 PM
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Default Re: R/C Tonka dump truck

That is pretty cool!!!

I have never seen a servo used like that B4 ???

Just on a winch.


BRILLIANT!!!
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  #4  
Old 05-02-2011, 10:55 PM
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Default Re: R/C Tonka dump truck

Good job, it runs nice.
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  #5  
Old 05-02-2011, 10:56 PM
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Default Re: R/C Tonka dump truck

Suprisingly it has good power empty. Enough to spin the tires on concrete, but it gets sluggish with a full load.
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Old 05-03-2011, 11:43 AM
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Default Re: R/C Tonka dump truck

Very nice idea of a conversion.
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Old 05-06-2011, 02:26 PM
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Default Re: R/C Tonka dump truck

Great tipping mechanism!
I really like that it still has the original character
May I ask what the servos are?
And do you not get problems with the exposed gearing?
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  #8  
Old 05-06-2011, 08:26 PM
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Default Re: R/C Tonka dump truck

The dump and drive servos are RC4WD 200oz crawler steering servos with the drive one adapted to continuous rotation. The gears are quite exposed and I have to be careful not to get them hung up on anything. The dump has tons of power but the drive is marginal with 4lbs of rocks in the box. It runs fine on flat ground but struggles with inclines. I just have to load it accordingly.
Thanks for looking
Jordy
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Old 05-06-2011, 08:38 PM
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Default Re: R/C Tonka dump truck

Thanks for the info!
I suppose you could use different gearing, but then you'd have to accept slower drive-speed. Probably wiser to just enjoy it as it is
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Old 05-09-2011, 02:17 PM
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Default Re: R/C Tonka dump truck

ive been thinking of rc4wd's mini rear axle.. its a 100$ touch though.

okay.. correction they dropped to 50 bucks... but you still need all the hardware to mount it etc.

http://store.rc4wd.com/118-T-Rex-Mic...xle_p_438.html

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Old 05-09-2011, 03:01 PM
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Default Re: R/C Tonka dump truck

I think Smallhaul used the drivetrain from a mini rock crawler like a 1/16 Losi or Duratrax on his Tonka's. They are about the right size and would offer plenty of strength and power. Once I find another dump truck to mod that is probably the route I will go, but the RC4WD axle sure looks good and would be a simple install on one of these trucks.
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Old 05-09-2011, 04:59 PM
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Thumbs up Re: R/C Tonka dump truck

This is such a great conversion. Especially like that you kept the original character of the truck. Just paint the wheels to match the factory ones and no one will know - except that it moves and dumps!

Good job!

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  #13  
Old 05-10-2011, 01:03 AM
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Default Re: R/C Tonka dump truck

Quote:
Originally Posted by sparkycuda View Post
This is such a great conversion. Especially like that you kept the original character of the truck. Just paint the wheels to match the factory ones and no one will know - except that it moves and dumps!

Good job!

ken=
Thanks
I had to research the wheel color to see it. The truck I have is a reproduction of the original and the colors are off from the real one. I'll have to add this to my list of To Do's.
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  #14  
Old 05-10-2011, 01:06 AM
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Default Re: R/C Tonka dump truck

On a side note I found a really easy latch system for the dump box gate. I glued a 3/16" round rare earth magnet inside the box, up against the tail gate and it holds it just enough to keep the load in while travelling but lets go when the pressure builds up on it during dumping.
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  #15  
Old 05-10-2011, 05:03 AM
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Default Re: R/C Tonka dump truck

Way to go on the tailgate latch! Neat conversion.
Later, Neil#2 aka doodlebug.
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  #16  
Old 12-15-2011, 06:36 PM
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Default Re: R/C Tonka dump truck

This is really cool! I have the exact same truck at home without an idea what to do with it, but now i know what I'm gonna do.
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Old 12-16-2011, 02:03 AM
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Default Re: R/C Tonka dump truck

That's a nice and simple conversion! The beauty is in the simplicity of the design. I like that. Servos, converted to continuous rotation make nice gear head motors. I think sometimes people over look the fact that they have a built in speed controller, giving them an advantage in tight spots, or on models with little room.
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Old 10-05-2013, 11:02 AM
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Default Re: R/C Tonka dump truck

This is a beautiful build, and I really like its simplicity. Any help with mine would be appreciated.
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