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Trackmaster transmission
Posted: Sat May 25, 2024 10:40 am
by Frankentruck
I have an RC10 Trackmaster transmission that needs a little work but has a lot of potential. However the big hurdle is it needs outdrive cups. Anyone found outdrive options that will work with it? Preferably something affordable. I am kinda cheap.
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Re: Trackmaster transmission
Posted: Sat May 25, 2024 12:06 pm
by GoMachV
If they are 5mm you could use kyosho optima/ultima outdrives (not rere) or ours from the trx1 bone kit
Re: Trackmaster transmission
Posted: Sat May 25, 2024 12:44 pm
by Frankentruck
GoMachV wrote: ↑Sat May 25, 2024 12:06 pm
If they are 5mm you could use kyosho optima/ultima outdrives (not rere) or ours from the trx1 bone kit
They are 0.250" / 6.35 mm shafts. I could open up 5mm to work. Do you know if either is compatible with an RC10 dogbone end?
Re: Trackmaster transmission
Posted: Sat May 25, 2024 2:13 pm
by GoMachV
Ours are hardened and would be a serious pita to drill out. Ill check bone fitment shortly but from memory the bones fit fine, maybe a tad loose but definitely usable
Re: Trackmaster transmission
Posted: Fri May 31, 2024 9:05 am
by Phin
CSC Slider Shafts, or the cups from a Bolink Invader with the independent rear arms would be options.
Re: Trackmaster transmission
Posted: Fri May 31, 2024 9:17 am
by Frankentruck
Phin wrote: ↑Fri May 31, 2024 9:05 am
CSC Slider Shafts, or the cups from a Bolink Invader with the independent rear arms would be options.
I'm going to try the hardened PITA direction first.

Re: Trackmaster transmission
Posted: Fri Aug 23, 2024 2:41 pm
by Frankentruck
I haven't tried fitting outdrives yet, but I took care of replacing the banged up side plates with some freshly cut Factory Works parts. Thanks again Jeff!
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Re: Trackmaster transmission
Posted: Fri Aug 23, 2024 2:44 pm
by coxbros1
Frankentruck wrote: ↑Fri Aug 23, 2024 2:41 pm
I haven't tried fitting outdrives yet, but I took care of replacing the banged up side plates with some freshly cut Factory Works parts. Thanks again Jeff!
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1000014040.jpg
I need those side plates for the Diamond

One build!
Re: Trackmaster transmission
Posted: Fri Aug 23, 2024 3:30 pm
by coxbros1
Got them ordered!...if they don't work it's @Frankentruck's ass!
Re: Trackmaster transmission
Posted: Fri Aug 23, 2024 3:45 pm
by Frankentruck
coxbros1 wrote: ↑Fri Aug 23, 2024 3:30 pm
Got them ordered!...if they don't work it's @Frankentruck's ass!
I don't swing that way.
The bearing holes needed to be opened up a few thousandths. Same with the screw holes for the spacers. But that's better than starting with oversized holes.
Re: Trackmaster transmission
Posted: Fri Aug 23, 2024 4:18 pm
by coxbros1
Frankentruck wrote: ↑Fri Aug 23, 2024 3:45 pm
coxbros1 wrote: ↑Fri Aug 23, 2024 3:30 pm
Got them ordered!...if they don't work it's @Frankentruck's ass!
I don't swing that way.
The bearing holes needed to be opened up a few thousandths. Same with the screw holes for the spacers. But that's better than starting with oversized holes.
Lol...yup, that's fine, don't mind opening them up a bit... better too tight than too loose!
Re: Trackmaster transmission
Posted: Thu Aug 29, 2024 4:47 pm
by Frankentruck
The G10 plates you ordered look nice! I considered that option too.
Re: Trackmaster transmission
Posted: Thu Aug 29, 2024 5:00 pm
by coxbros1
Thanks, I did have to move that hole where arrow is at bottom, and shave of that part at top cause it was hitting the bulkhead, but the bearings dropped right in perfectly!....with a few tweaks, he can put it on the market!
Re: Trackmaster transmission
Posted: Thu Aug 29, 2024 5:12 pm
by Frankentruck
I'm sure it's a little different shape for Ultima vs RC10 but overall probably very similar.
Re: Trackmaster transmission
Posted: Thu Aug 29, 2024 5:14 pm
by GoMachV
coxbros1 wrote: ↑Thu Aug 29, 2024 5:00 pm
but the bearings dropped right in perfectly!
After the feedback I adjusted the holes to the sizes I typically use. I don't like to modify customer files when supplied but once I sell to others I definitely try to add my $.02 haha