Guys, was wondering if swapping to a RPM Gearbox from a standard stealth tranny would help as far as running a brushless setup in an Old RC10 Graphite. I am just looking to add a bit more reliability - not that the stealth is weak. This is a buggy of a Family members that has been sitting in his Garage collecting rust and dust! The bearings in the stealth are all seized as are the Wheel and Hub bearings So he asked if I could help him out, and revive the car - although preferrably brushless and Lipo capable. I am thinking 17-22 T Brushless as of right now.
If there is a topic already, please point me in the right direction, and then the mods can delete this.
The only difference between the two transmissions is the top shaft. Stick a B4 top shaft in the Stealth and have at it. It'll handle down to an 8.5 without sweating.
Well, the gear ratio is different as a result of the topshaft as well, the 2.65 internal ratio of the RPM tranny also is a little quicker to spool, keeping the temps down. But I have run both with a 6.5 on a super bite track and other than the spur/pinion ratio they both work well ( I prefer the RPM ) the B4 slipper is easier to adapt to the 2.25 stealth ( top shaft/plates pads/spring & nut )
and is the only weak spot in the 2.25 or the RPM with the stock slipper-
Charlie don't surf wrote:Well, the gear ratio is different as a result of the topshaft as well, the 2.65 internal ratio of the RPM tranny also is a little quicker to spool, keeping the temps down. But I have run both with a 6.5 on a super bite track and other than the spur/pinion ratio they both work well ( I prefer the RPM ) the B4 slipper is easier to adapt to the 2.25 stealth ( top shaft/plates pads/spring & nut )
and is the only weak spot in the 2.25 or the RPM with the stock slipper-
I was thinking that with the newer more powerful Brushless motors and 2.2 tires, it would seem like a logical choice. And a better bottom end is always a good thing as well.
Brushless motors make tons more torque than brushed motors, unless you'll be running a 3.5 or something like that, a lower numerical transmission ratio will be more desirable. As it is already, guys running 17.5's in B4's are running 68 tooth spurs and 38 tooth pinions to get a decent gear ratio as the motors love to pull tons of gear. I would stick with the Stealth and use a B4 top shaft but that's just because I don't have any 38 tooth pinions
I've been running my old/new buggy with the RPM trans and the T3 slipper using a Mamba Max 7700 brushless setup for about 2 years now. I've had no issues with the transmission/slipper at all, and I haven't been gentle with it either. In fact, I recently tore it down for maintenance for the first time since building it and I was surprised at how little wear and tear there was in the gearbox.
I'd think either transmission would work just fine with at least the T3 slipper installed.
adam lancia wrote:As it is already, guys running 17.5's in B4's are running 68 tooth spurs and 38 tooth pinions to get a decent gear ratio as the motors love to pull tons of gear.
precisely the reason there's a 1.96 rpm trans in my v-nats car (17.5).
I have a 17.5 hooked up to my 6 gear tranny right now. I could use a touch more top end, but it is geared "conservatively" @ 26/81. I have a 78 I am going to drop in and do some runs (in the street) next to my boys T4 for a gauge on top end.
--Joey --
Vintage A&L and Factory Works
Old School Racer & Vintage RC Car nut
JKRacingRC.com
Alright, so I am getting close to putting the tranny together, and man I had forgotten how heavy the outdrives were. I was curious were there even any lighter ones offered (Delrin or Aluminum). I had found some on Custom Works site and wondered will these work?
Aren't those delrin cups the 'real racers' choice hubs = they'd give you that extra edge but you had to sponsored so you could afford to replace them every other race
Only good for shelfers these days
I am judging interest to see if anyone would interested in these. But before I get to far ahead of myself let me explain.
I contacted RPM to see if they had one laying around and they said they didn't
I then said would they be interested in...
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Tommygun When and if you get buy sell trade access i will sell you my RPM TRANS CASE AND TOP SHAFT.iT WAS BUILT AND PUT ON A SHELFER NEVER RUN.sO CONTACT ME WHEN YOU DO GAIN ACCESS TO bst section.DON
I know people have said on here it can be done, namely pop the topshaft gear of so you can use the b4 slipper. But havent actually see anybody do it? Unless of course i've missed a post somewhere!
I'm going to do it on my 10T only way i can think of...
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Group buy sounds like a good idea.
I wonder if they are re-manufacturing them, or if it is old stock.
I would be in too.......
I was looking for some hop ups for the 10t, and found the rpm 2.65 kit on towerhobbies, it says that it'll give the truck better acceleration, I was wondering, is it worth getting? doest it make a noticeable difference in acceleration??.
I'll...
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:D Ok got it all figured out, I bought the cutting fluid and a new blade, and voila, shiny new Comms!!!! yay!!! :D
Now I feel a little more confident about running the brushed motor. 8)
I've had a RC10 since '87 (bought it used). I'm pretty sure my first was a 'Edinger' car. I am planning on reassembling that collection of parts n the future.
For now, this is some of the parts that...
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Painted the neon rims -- I like it. Runs great-- had to put the wheelie bar back on for running a 3 cell. My buddies 3s Slash clocks itself at 53MPH, and this thing pulls on it, easily. :)
I have a few b2 and b3's for parts and was wondering if I can use the rpm gear ratio change box and the guts from the b2 trannys to make a cheap stealth transmission?
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buggies
rc10 ce stealth edition
rc10 team car
rc10 worlds edition
trucks
rc10t
btw you can still get all the stealth parts new from tower.
So he asked if I could help him out, and revive the car - although preferrably brushless and Lipo capable. I am thinking 17-22 T Brushless as of right now. 
