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Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Wed May 04, 2016 9:34 pm
by yellowdatsun
Got bored, and was browsing the net aimlessly. I was on here for a but, looking at that guys gold mid conversion, and I really liked it. Nothing over the top, just a good conversion using mostly stock-ish parts. Soooo, I decided to build my own. I'm not ready for the 4wd stuff yet. So here's where it sits now:


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If it works, it'll be a nice companion to the B5M, 30 decades apart.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Thu May 05, 2016 10:35 am
by jeepy2013
Looks like it ought to do the job just fine.

I wish I had some pics of one of my old projects, about 2008 I had a RC10 GT2, I'm not a nitro guy, so once the motor started giving me fits, it was taken off. I used a motor mount from a 10L, drilled the chassis for it, mounted a Brushless 5700kv Castle motor, converted to 32 pitch gears and ended up with a mid-motor stadium truck. Nobody else really had anything else like it back then, it got a lot of attention at the track on practice days.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Thu May 05, 2016 11:39 am
by badhoopty
looking good. my friend did basically just that to his team car and it works killer on the track.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Thu May 05, 2016 9:42 pm
by yellowdatsun
Update for today:

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Debating on leaving the rear bumper on, as a, well, bumper......or doing something like the small B5M style dealy-bob. Maybe there's a good middle ground bumper I could use? Hmmmm.



I have both a track-ified RC10, and a B5M to make comparisons from. Both the other RC10 and this one started life as trucks, so both are *very* wide. We'll see how it does. Need to wait on a Detonator Worlds lid for it first. It seemed to be the best one for a moved rear shock tower.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Thu May 05, 2016 10:19 pm
by badhoopty
could just shorten the rear a bit. nasty tumble or hard hit in the rear and thats alot of leverage to tweak things.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Thu May 05, 2016 11:50 pm
by yellowdatsun
Ok, I'll try shortening it for the time being, maybe to the vent hole bottoms.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Fri May 06, 2016 1:38 am
by badhoopty
i'd cut it off like a graphite motor guard and trim the chassis, then bolt it back on.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Fri May 06, 2016 11:51 am
by yellowdatsun
Here's the shorty rear, ahem, bumper. Cut and curved.


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Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Fri May 06, 2016 11:55 am
by yellowdatsun
I got the battery hold down finished. It's two cut down black battery tray holders. The near end has the back cut 75% out to facilitate battery removal.

The front mount for the stabilization brace is a 10T or Nitro triangle part that usually goes to the nose tubes.


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I will be replacing the white plastic over the motor with either black or gray, depending on what I find. CF would be sweet, but doubt I'll find that locally.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Fri May 06, 2016 11:59 am
by yellowdatsun
Would like to find another rear shock tower that has the holes drilled for a wing mount, ala B5M width. I have one on the RC10T buggy, but not sure if I was to pilfer it. I probably will, and stick a standard wing back on.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Fri May 06, 2016 6:48 pm
by yellowdatsun
The RC105M is coming along nicely. I swapped out the crap plastic above the tranny for some more substantial stuff. I also made the brace separate from the rest of the tranny bolts, and it has a nut underneath. I'm quite pleased, as it's been done with 99% of parts I had onhand, and only bought the gray plastic sheet.

In this shot you can better see the truck mounting triangle thing.

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We'll see how sturdy it is, I may add another brace and triangle mount.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Fri May 06, 2016 6:51 pm
by yellowdatsun
Sorry, forgot, I also bought some exotek wing mounts and buttons. I already had a wing setup, but always get tired of them becoming loose with the body clips.


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Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Fri May 06, 2016 7:10 pm
by yellowdatsun
Should I call it the RC10-Mid, or RC105M? Maybe RC10-Mid, just so people don't get confused. Maybe I can confuse people, "Nah, it was an option back in the 90's), hehe!

I also swapped my blue shocks over from my other RC10T. They're a lot smoother, and have been to the track already. I'll rebuild that car as a shelfer, and (hopefully) run this one.

Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Sat May 07, 2016 12:45 pm
by yellowdatsun
Found this bumper thingy in the clearance bin at the track. Not sure what it goes too, but it fit my car perfectly. I also got a second one from the clearance bin, since I assume they won't be carrying any more.


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Re: Yellowdatsuns mid-motor conversion, on the cheap!

Posted: Sat May 07, 2016 12:48 pm
by yellowdatsun
I wish I could find a gear cover that actually fit with my new configuration.