Do I need a reverse spring?

[rslaback]

Almost 20 years ago I bought a Manco Deuce 612 as a project. That project hit a hard roadblock when I found that the Comet FNR transaxle used was no longer available. It sat on the back burner for over 15 years until I happened to see that gearbox offered on Facebook marketplace.

I had assumed that any progress I was going to have made would be a shifter engine from an ATV and a highly modified rear axle so I sold the original 12HP Tecumseh and the original torque converter.

Now that I am putting it back together I have a torque converter and an engine purchased. In watching some videos and reading some posts to make sure that I have the drive clutch installed correctly it looks like Manco installed the driven clutch backwards compared to "normal". The smaller end has to mount on the Comet input shaft the way it shows in my picture otherwise it interferes with the frame. This appears backwards compared to most videos. One video mentioned a reverse wind spring. Is that something I need to source in order to get my converter to work properly?

 

[Denny]

For a 40 series that is the normal way. The correct way. The right way. Just remember to USE ONLY GENUINE COMET BELTS!!!

 

[rslaback]

For a 40 series that is the normal way. The correct way. The right way. Just remember to USE ONLY GENUINE COMET BELTS!!!

This guy shows the drive and driven with the fixed sheaves on opposite sides like I have it. My question is with both of them flipped compared to "normal" do I need my driven to open the other way?

 

[Denny]

It looks like you have the correct red spring.

 

[panchothedog]

The way your setup is, is fine. In the video you reference, the driven unit is reversed from how yours is and needs the reverse wound spring. As long as the alignment is decent, you should be good to go as is. What are you running for an engine?

 

[rslaback]

The way your setup is, is fine. In the video you reference, the driven unit is reversed from how yours is and needs the reverse wound spring. As long as the alignment is decent, you should be good to go as is. What are you running for an engine?

It'll have a Chinese clone 420cc that I didn't pay close enough attention to and bought with a 24mm crankshaft and 7mm keyway that I now have to adapt to.

 

[panchothedog]

It'll have a Chinese clone 420cc that I didn't pay close enough attention to and bought with a 24mm crankshaft and 7mm keyway that I now have to adapt to.

Live and learn.

 

[panchothedog]

Your picture looks like everything is bolted up. Were you able to adapt it to the
oddball sized shaft?

 

[rslaback]

Your picture looks like everything is bolted up. Were you able to adapt it to the
oddball sized shaft?

It's on there but not adapted yet. I needed to get a rough size for my center to center belt spec.

The difference between 25mm and 1" is about .020" so I plan to use a piece of .010" sheet shim stock wrapped around the crank. The difference between a 7mm key and a .250" key is about .025 so my plan is to make the ends of my shim drop vertically down into the crank keyway. It should look something like this. Wish me luck.