how do i turn a hi-tec 645MG into a working winch???

[austinsclod]

okay I have a 645mg kicking around and i would like to turn it into a winch how would i go about doing this?? anyone know how to

[DUDE]

I don't know if you can or not, I have been kicking around the idea of using a tranny out of on if those little "Extreme Rock Machines". We call them Wally Crawlers becuase you get them at Wallmart.

Here is a pic of one

[badger]

I don't think there is enough throw in a standard steering servo. Maybe with some type of reduction attached.

[DUDE]

I thought to use a little motor on some kind of a reduction and a spool off of that. To operate it, use a mini servo on an mechanicall speed control to reverse the motor for reeling out and the throw it in forward to reel in.
I know old school, but them speed controlers is all we had at one time.

[CustomCrawler]

If you look inside the servo, there should be a round brass peice in there somewhere. I should have a nub sticking up inside that prevents the servo from turning a full 360*. Just shave that down with a dremel and reassemble. I did it to a Traxxas 2018, but that was a long time ago.

[CrawlinForLife]

you have to remove the physical stops and if I remember right I had to also make it not turn the pot. Find a junk standard servo to play with first before you wreck your 645.

[Plays_with_Toys]

Here you go:

http://www.acroname.com/robotics/inf...y/assm1_2.html

That's a write up for antweight robots, but it works. I've modified 6 or 7 servos for full rotation back when my school's tech. club did the battlebots thing. Very simple to do.

[kevinlongisland]

i did this to a servo, removed the stops inside and also removed the coupling between the ouput gear and the potentiometer. it will spin in either direction forever until you bring the tx position back to neutral.

[gobble_doc]

go to a top shop and buy those cranes pull it apart and make up some thing with all the gears etc and it comes with the little halder for the cord with a gear on the side

[77chevy4x4]

i stuck my servo in a box a put along tamiya screw through it with the screw going into the servo head and there you btw i did the usual wire the main motor and trimed the servo gear

[rbgerrish]

For more information on making servos into winches, try the search function. The topic has been covered a few times. Have fun!

Ryan

[JeepinItReal]

Originally Posted by DUDE

I don't know if you can or not, I have been kicking around the idea of using a tranny out of on if those little "Extreme Rock Machines". We call them Wally Crawlers becuase you get them at Wallmart.

Here is a pic of one

my son and i have 3 of those xtreme rock machines and we have stalled the trannys out on all but 1 of them.(before the belts wore out) i dont think that they would be strong enough to support the weight of a large crawler. we also put a 4 cell pack for the rx on one and almost burnt the motor up in less than 2 mins. if you can figure out a way to make it work i will most definately sacrifice one for my txt 1. good luck!

[Trike Kid]

I just modded a Traxxas 2055 for continuous rotation, Its fairly simple and if I'd have known exactly what I was doing it would have taken me a couple minutes less, but still only took 5 min using only side cutters, the file on a swiss army knife, a regular hand file and a #0 philips screw driver. The first thing is to open the case up, but you knew that already, then pull the gears off(remembering where they go of course) you'll be left with the end of the potentiometer sticking out of the case, cut/file this down till it no longer engages the out-put gear. Heres a picture of a modded one with a normal one in the fore ground. (yes I know my pictures suck, but I'm tired and didn't spend much time on them)

On my servo there was also a stop on the output gear, my gears are plastic so i just sliced it off with a hobby knife, on an MG if there is one youd just have to file it off. Heres the modded(gray) output gear with a normal(white) one. I put black marker on the tab so they would be easier to see.

And heres a crappy low quality vid (I was standing directly under a light and it was that dark, my cam really only likes natural light, and its midnight here.
Click here to watch mod-vid

[rockraper]

Originally Posted by JeepinItReal

my son and i have 3 of those xtreme rock machines and we have stalled the trannys out on all but 1 of them.(before the belts wore out) i dont think that they would be strong enough to support the weight of a large crawler. we also put a 4 cell pack for the rx on one and almost burnt the motor up in less than 2 mins. if you can figure out a way to make it work i will most definately sacrifice one for my txt 1. good luck!

there is no way that the tranny would work for a winch.. me and my buddy have about 10 of these wally-crawlers, and all have stripped the gears inside.. they are sh!t

[Trike Kid]

how are you guys managing to strip them, I have had two and went through all my belts. The inside of the tranny looks like new.

[Zapper2003]

what i wanna know is how are you gettin the wheel nuts off and the axles out?

[Trike Kid]

They include a wrench, you take one wheel off and yank the axel out with the other one. Needle nose pliars would work to take the nut off as well.

[Zapper2003]

Huh. Mine never came with a wrench! BA$TARDS!

[Trike Kid]

you must have an older one, just use a set of pliars

[bigdogrod]

if you have the mechanical stop on the output gear/ shaft you have to cut that off.

also on the back of the gear there's a little bit of plastic where the potentiometer goes into, you have to take that out and center the pot (with everything powered up and the stick and trim in neutral

then put the servo back together and you're done

bdr