RPM Tranny

[TheTexasTornado]

Does the RPM tranny use the mounting holes for the stealth tranny?"

[Charlie don't surf]

Yes, for the stealth 2.25 only

[TheTexasTornado]

Thanks man for the fast reply, I have a lot of stealth tranny parts but no cases, it looks like I will by buying the rpm ones now.

[djacobox372]

I'm planning on installing the rpm trans in my runner as well--I have a chassis with a chewed up six-gear, and I've been looking for a stealth trans for it and happened upon this auction:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&_trksid=p4340.l2557&rt=nc&nma=true&item=200585273665&si=qBfukiOazAkx4UjdjskEYcU91TI%253D&viewitem=&sspagename=STRK%3AMEWNX%3AIT

The expensive bearings made this seem like a great deal to me.

I'm not sure about the slipper eliminator, what is the opinion of them here? Am I risking chewing up the gears?

[losiXXXman]

Slipper elims are sometimes(usually?) popular on Dirt Ovals. For off road use, you want to put one back on.

[Charlie don't surf]

Yup, DO part- but they are sometimes used in offroad with 17.5 motors on really tacky tracks as well- faster spool and immediate traction

[djacobox372]

Thanks, I think I'll install the slipper to make my trans last longer.

I remember when we used to race the old 6-gear trans back in the late 80's many people would lock out the slipper to the spur gear with a set screw, which would basically do the same thing as a slipper eliminator on a stealth trans. This made the car faster, but it risked stripping the idler gears when you ran into something.

[Cronus]

I'm planning on installing the rpm trans in my runner as well--I have a chassis with a chewed up six-gear, and I've been looking for a stealth trans for it and happened upon this auction:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&_trksid=p4340.l2557&rt=nc&nma=true&item=200585273665&si=qBfukiOazAkx4UjdjskEYcU91TI%253D&viewitem=&sspagename=STRK%3AMEWNX%3AIT

The expensive bearings made this seem like a great deal to me.

I'm not sure about the slipper eliminator, what is the opinion of them here? Am I risking chewing up the gears?

So you're the guy who out bid me I wanted that for the runner I'm building!

[losiXXXman]

Thanks, I think I'll install the slipper to make my trans last longer.

I remember when we used to race the old 6-gear trans back in the late 80's many people would lock out the slipper to the spur gear with a set screw, which would basically do the same thing as a slipper eliminator on a stealth trans. This made the car faster, but it risked stripping the idler gears when you ran into something.

I believe that would be locking out the diff. The six gear had no slipper clutch. Were you dong this back then on dirt ovals or off road? I can see that a spool effect(no diff) could maybe work on DO, but i think in off road you'd be sacrificing some cornering ability.

[fredswain]

There was no slipper on those gearboxes. That is the diff. We typically ran them a bit loose so the diff slipped a little bit. The guys running dirt oval would sometimes just tighten the nut all the way down to eliminate all slip and effectively lock the diff. I don't remember anyone having to install a screw anywhere.

[Asso_man!]

MIP made diff pinning kit for the 6-gear trans, it required to drill holes through the diff plates and outdrives and insert two set screws. It basically prevented the diff rings to slip on the outdrives.

[djacobox372]

Thanks, I think I'll install the slipper to make my trans last longer.

I remember when we used to race the old 6-gear trans back in the late 80's many people would lock out the slipper to the spur gear with a set screw, which would basically do the same thing as a slipper eliminator on a stealth trans. This made the car faster, but it risked stripping the idler gears when you ran into something.

I believe that would be locking out the diff. The six gear had no slipper clutch. Were you dong this back then on dirt ovals or off road? I can see that a spool effect(no diff) could maybe work on DO, but i think in off road you'd be sacrificing some cornering ability.

Not exactly, you just lock the outside hub to the outside slipper plate, that way you can loosen the dif so it operates very freely (more so then without the mod) and at the same time you're basically locking up the slipper for acceleration (although it would slip a bit on the dif balls, so it's not a complete lockout like the slipper eliminator).

This old video explains this at around 2:50: http://www.youtube.com/watch?v=LrjtY0mjKRQ&feature=related

Just about everybody at the track I ran back in the day did this, I think they just have all copied it from this video.