Do any transmissions on "1/1 scale" vehicles work like RC nitro transmissions?

[bobthebob]

Probably a dumb question but as I was reassembling my Savage tranny I was like, why don't car auto trannies work this way too (centrifugal force engaging each successive gear at the correct RPM)? Then again why do they use torque converters instead of a mechanical centrifugal clutch also? Probably something about too many torques?

 

[SchrodeMode]

I would hate to rebuild my 1:1 transmission as often as I've had to on my old nitro Rusty.

 

[bobthebob]

Yeah I hate working on real cars XD

 

[Rolex]

It's all about not feeling the shifts on a full size car. If they worked with the centrifugal pawl the way the RC trans does, you'd think someone hit you from behind every time it hits 2nd.

 

[bobthebob]

Well some auto's (mainly older ones) definitely didn't shift smoothly all the time. I'm really curious if someone has tried it. Seems like someone must have designed a full size vehicle that had that kind of tranny and clutch and it sucked for reasons I don't understand! I think at least some low end dirtbikes use centrifugal clutches and have auto trannies... maybe the same concept on them?

 

[Certified Mike]

They use synchros in 1:1 cars... There is simply too much mass rotating and to make it work without violent shifts and transmissions that sound like small nuclear wars, the gearing pitch is much smaller by scale... There is really too much to get type out and explain it all but a quick Google search will help you understand the internal workings on a 1:1.

 

[bobthebob]

Yeah I have looked into how full scale transmissions work, and basically understand them. They are much more complicated. I guess there would be too much lurching and lack of smoothness to use what works for RC scale.

 

[Rolex]

too much lurching and lack of smoothness to use what works for RC scale.

Exactly. RC is not designed for driver and passenger comfort.

 

[hamz9561]

And 1:1 transmissions aren't built for typical user serviceability...

 

[Certified Mike]

No, 1:1 transmissions are really their own industry. Certainly a specialist type thing. There are certainly things that the mechanically inclined person can do, but they are just a bit beyond the typical 'plugs and wires' job! Lol! A lot of specialty tools and equipment involved in most all of the late model stuff.

 

[ninnon]

Not as reliable, too dangerous I suppose too.

 

[Certified Mike]

Way back when, as the V-8's power and rpm were exceeding the technologies of both the available metals and of the transmissions themselves, it was a somewhat common occurance that the ring gear (the gear that the starter motor engages) would break the welds and break off of the torque converters. They would actually 'saw' thru the floor boards of the car (or blow thru if they shattered)... You can imagine the carnage inside the vehicle from there! This was a more common occurrence in hot rods etc... To this day, blow shields and blankets are required around transmission bell housings by NHRA. There were a lot of lessons learned the hard way!!!