who's got a george asche o/d

[p24-1953]

how does the three way switch work? i called george and he said one way is normal like the factory, one is off and one is always engaged but i should not (or maybe it wont)go in to reverse in this setting. i asked which setting is which and he said he couldnt remember. do you guys know?

[HughForrest]

Does this help? It's the diagram he sent with mine:

[p24-1953]

i've got that, but which position does the switch need to be in for normal operation? which position is overdrive all the time? will i be able to go into reverse if it in that setting?

[blueskies]

Not sure why you wouldn't just wire like the factory did, I see no reason for the three way switch.

Pulling the lockout cable out will keep the OD "off", and why would you want it "on" all the time? The system was designed to work automatically as you drive, and when working like it should, it is seamless. In my judgment, adding Rube Goldberg controls makes it harder to drive because you have to pay attention to the settings, and if anyone else drives the car, they will be lost.

Here's the factory wiring diagram. I have mine wired this way aside from the kickdown switch, which you can read about here.

Pete

[martybose]

i've got that, but which position does the switch need to be in for normal operation? which position is overdrive all the time? will i be able to go into reverse if it in that setting?

The way the transmission is configured, shifting into reverse also mechanically takes it out of overdrive, since otherwise the overrunning clutch would just freewheel and you wouldn't move. That's why you can't just add an OD unit to the standard tranny, as the OD tranny has the reverse rod going through the case into the OD unit.

Marty

[Young Ed]

Marty the way I understand it is that being in OD prohibits you from going to reverse. So with that switch in the wrong spot you'd never be able to back up

[michael.warshaw]

just picked up a redone od tranny r-10 from a private person, the man i bought them has 1 more, all rebuilt (by george asche) if someone wants it let me know, hes not one to go online, and sell it. i can arrange it if someone wants it?

[Don St Peter]

On my 40 Plymouth with the Asche OD, the 3 way switch works great wired as shown on his schematic. One could use a two way just as well as the third position does nothing as wired for me. I can drive around with the OD mechanically engaged and use the switch to kick it into and out of OD. Since, being a 40, I have the "fast 2nd gear" feature so I can drive around in 2nd while in OD. Kind of seems like a poor man's automatic.

Don

[p24-1953]

im wondering if that is my problem. i do not have the fast second, and with no speedo i dont know if im getting fast enough to make the overdrive automaticly kick in in second.

[Dave Bohn]

I have an Asche OD. I also have the 3way switch - I needed to go that route as it is on a D24 and I don't have the kickdown switch on the carb. I visited with George and he took me for a great ride in his 50 plymouth. He explained that one position was for OD where it allows it to be activated when at the right speed and you take your foot of the accelerator, another position (middle I think) gives free wheeling and the third position deactivates OD and acts as a kickdown (without having to floor the accelerator). I only had it out for 2 rides before winter hit so I'm still trying to be sure which position on the switch does what.

[blueskies]

im wondering if that is my problem. i do not have the fast second, and with no speedo i dont know if im getting fast enough to make the overdrive automaticly kick in in second.

I don't have the fast 2nd, and my od works fine in 2nd gear. I drive around town with the shift lever in 2nd, and the system automatically shifts in and out of OD depending on speed.

I think you have a problem with the governor, the cut in speed of about 28 mph is probably is out of whack.

Pete

[p24-1953]

talked to george today, and he agrees that the govener might be a little out of wack, but if it works okay in second and with the switch i might just leave it. i wounder where i could get a new govener? first of all i need to get the speedo working again so i can really tell the cut in speed.

[BobT-47P15]

And, as you probably know, the overdrive trans requires a longer speedo cable

(at least it does on a P15).

[blueskies]

And, as you probably know, the overdrive trans requires a longer speedo cable

(at least it does on a P15).

Must be different on the P20 cars... I'm using the factory speedo cable on my OD.

Pete

[Young Ed]

Right the p15s have the speedo connection on the opposite side of the trans then the OD trans. The switch happened in 49 or 50.

[40phil41]

On my '40 Dodge (with D24 engine) the speedo connection was originally on the passenger side, but on the OD tranny it is on the drivers side. I had to re-route the speedo cable from the pass firewall side to drivers firewall side access hole in order to connect it to the OD. However, I have since purchased a speedo cable extension (eBay) which will allow me to use the original firewall hole (pass. side) as before. Confused yet!

Phil

[Don St Peter]

No doubt you have ( or will ) experience a significent speedo error with the OD installed ( speedo shows 6 to 10 MPH slower than actual speed ), due to gearing differences. There is a company out there that corrects the situation with a kit.

Don

[Young Ed]

The OD doesnt change the speedo. The drive gear in the trans needs to match the rear end ratio.

[Don Coatney]

No doubt you have ( or will ) experience a significent speedo error with the OD installed.

Don

Not true. The speedometer gear inside the transmission counts the output shaft reveloutions. The output shaft reveloutions will be the same with an overdrive transmission and a standard transmission in all gears.

[kencombs]

What usually happens is the error is due to the difference in the standard differential ratio between O/D and standard trans. Most standards are geared a little higher than OD rears. So the speedo drive gear is not matched to an O/D that was swapped into a non/od car.

[Don St Peter]

I guess I said it wrong. You must have the proper toothed speedo drive gear for speedo to be accurate and I did not make complement change, thus speedo reads 6 to 10 MPH slower than actual speed after Asche OD installed in my 40 Ply P-9.

Thanks for noting

Don

[michael.warshaw]

if anyone is looking or a od unit, there is a man near me in ny (i just bought one for myself) , that has 2 for sale all rebuilt by george ashe never installed comes with everything ( electronic, and directions. i told the man i would try and sell them for him, since hes not pc savy, hes looking for 1500, and ill help anyone get one, if you want one pm me. they will not last, so heres the opportunity, il even crate it for anyone who wants to have one shipped. im trying to help thi man, as he is a nice guy, and a mopar nut like me. call me if you want to speak 516 233 7788 mike w