CW 2.40 tranny

[cobra22431]

Is there any plans to change the trans ratio? 13.5 I had to run a 82X53 at USOW to get the near 2.2 rollout. Makes it hard to get the motor tight with that big pin in the way. A smaller spurr only made it difficult to get gear mesh at the end of motor mount adj. I know stock motors were in mind when you went with the 2.4 tranny but now stocks are mostly dead(thank GOD! lol)

[MRDmotorsports]

It would make sense to change the gearbox, but would require them to get more parts machined instead of just getting them from associated. This might be one reason why Mike Jeffrey has added a direct drive to the terminators, make it a little easier to find the right gearing.....just my thoughts

[smitty]

What would a good trans ratio be?

RPM made a 1.96 ratio trans.

[markny]

is

[siggy99x]

Direct drive is legal at the usow and here in PA. Its a much more effecient set up and a lot cheaper then building a tranny till you get the ceramic bearings and balls and the cut gears. And it is also a lot easier with gearing the motors. Really no reason to outlaw it just makes more sense.

[tmr22]

Dustin Malicoat makes a 2.60 tranny case for the electric cars and it uses the same gears ffom the gas cars. I don't know if that is the direction you would want to go but it is a start. The direct drive idea is also the other option.

[DirtFords1]

Maybe a new motorplate,with a bit more adjustment. I also know the front holes in a 2.25 tranny are the same spacing as the B3/2.40,in a mid motor config.

RPM did make a 1.96 trans conversion for the 2.25 tranny,don't believe your able to run the RPM trans mid-motor.Not sure if the top-shaft and idler would fit in a 2.25 case......

[jenzorace]

Try taller tires. Tire size affects rollout alot. And a dd car is even worse to gear. In the other direction. Thats why they use trannys. A 2.6 tranny would be even slower. There great for buggy tires.

[olderacer]

i have the rpm 1.96 tranny conversion, no i won't sell lol.
the conversion is new case halves and a new larger top shaft. it would take some work to the case halves to get it to work mid motor. it uses the 2.25 diff and idler. rpm no longer makes the 1.96 conversion.
maybe someone could make a larger top shaft and new case halves for the customworks cars?
hint, hint;)

[siggy99x]

Try taller tires. Tire size affects rollout alot. And a dd car is even worse to gear. In the other direction. Thats why they use trannys. A 2.6 tranny would be even slower. There great for buggy tires.

A dd car with 13.5 brushless is a piece of cake to gear.

[cobra22431]

No it would need to go lower than 2.40 to get a better spur/pinion setup. When you run foams it becomes harder. Dustin Malicoat makes a 2.60 tranny case for the electric cars and it uses the same gears ffom the gas cars. I don't know if that is the direction you would want to go but it is a start. The direct drive idea is also the other option.

[cobra22431]

Yes I have the old CW DD cars and the same old 124 spurr that I used for stock worked great, running arround a 34 pin depending on tire size( It will fit up to a 47 I checked it LOL), but as you should know the older CW DD are limited in adjustments when you try and take on the newer GB cars like a properly setup & driven CW GBX's or the putnam you loose. Hmm a DD tranny in the GBX SE, would like to try that LOL. Just a note the Tranny diffs last much longer with less maitnence and if the track gets slick you also have a slipper. The DD is simple and works well but it has drawbacks. I was happy do dump all the work like when we used delta shocks, rebuilds mucho. Add getting rid of those dam stock motors, breakin/build, rebuild, dyno rebuild(LOL) and those darn NIMH with equilization- cycling and storage cycles or Batt dr. I can now spend more time with setup and driving ability in a brushless lipo class. A good Tranny will add to that time, build it right and use the ceramic sealed bearings and ceramic diff/thrust balls and boom more setup and track time. A dd car with 13.5 brushless is a piece of cake to gear.

[siggy99x]

Check out the JRc set up for the term it uses the stealth style diff in it so maintenance is improved and you have all the adjustability you could want

[radexp]

I ran my 17 year old DD Enforcer to a 4th qualifying position at the Open Wheels' in 13.5 Sprint last week. The top 4 were all on the same lap. I was running a 2.15 rollout.

Now, the only things that I have changed on the stock kit (aside from broken parts, which weren't many) over the years were: a Superior lightweight diff (which I got 2 months after getting the car), a lightweight chassis that Chad from Dynotech cut for me, and the CW upgrade to run touring car style shocks (I have the CRC Clicker shocks that I purchased 5 years ago).

Note: I have changed the diff balls once (yes, I said ONCE) in 17 years, and I am still running the original RC10L Diff rings that I got with the lightweight diff. The diff is just as smooth as any other out there.

I have run the piss out of this car.:beer::checkeredflag:

Yes, these cars are still competitive...my hat goes off to Jerry and Brian for designing such a great piece of machinery:thumbsup::thumbsup:. Take care of them and they will treat you very well.

My experience with the two is that a DD car is much more efficient if you want to put in "low power" for lack of a better term (like a 17.5 or a 13.5). The tranny cars seem to handle the fast powerplants a bit better (however, over the years, I have run my DD car in Open Mod, and, many can vouch for this: it can certainly hold its' own.) Even Tony has run the DD car at all of the Open Wheel's that I can remember...his results speak for themselves.

The tranny cars have much more adjustment in the rear end for suspension aspects of the whole deal. I know that Nick Rank once had a GBX car that was drilled to accept both DD and Tranny style Custom Works rear ends.

Just my 2 cents...

Alan