RC-Monster Forums - View Single Post - Single speed tranny w/ lexan cover and motor mount.

Gee · 04:24 AM

It is basically the mod in the first link below to run the revo slipper clutch. Which there are a couple different ways you can get the revo shaft and slipper to work for the 3905 tranny. I didn't use either of the ones that require you to drill a new hole into the shaft. I was able to use the existing holes that were on the revo shaft I ordered.

http://www.rc-monster.com/forum/show...slipper+clutch

Yes the 3905 2 speed will work and is a larger and stronger setup in IMO, but there are also mods that need to be done to it. More then the others mods need. Here's a write I did on the 3905 shaft used in the 3906 tranny.

http://monster.traxxas.com/showthread.php?t=412386

To go alone with the mod theme, Here's another for using the 3905 steel idlers in the 3906 that I experimented with. They too are a larger gear then the 3906 was made for but they will work.

http://monster.traxxas.com/showthread.php?t=412299

Thanks Goerge that area did get thinner as I made it "Better". Will keep an eye on how it wears. It's shimmed well and nothing but a bearing is in contact with it. After some heavy use that could change. A good idea with the gorilla glue and a disk. If my plan works I will have a new and improved cover before that becomes and issue. A few lessons learned while making of this one will make the next on easier and better.

The process was easy and the idea was stolen from the G1 tranny. Just went the opposite directions they did and used lexan instead of aluminum. So no creativity on my part just making due with what I had on hand. Plus I had a little spare time while I was waiting for UPS to show up. They were few days behind due to adverse weather conditions.

The tools came in handy but if determined you could make one of these with a pocket knife and a lighter to touch up the scuffs. Wouldn't recommend it though. Fostner bits and dremell accessories are not a requirement to start, make, or finish a project. The right tool will make the project easier and allow it to be completed faster. Time is the most valuable item to all of us, we all are always running out of it. We all want more of it. You can't go out an buy more time to have with your children, parents, or spouse. We get paid for our time. There are countless items that are marketed to us to do what. Save us time. Time goes by faster when you get older. Time is running out. Stepping down now.

Buy a tool that will speed up your builds and save you time to spend with loved ones.

The build is cheap. I already had the 3/8" lexan left over from when I made a rustler out of the stuff. So I can't really say how much that small chunk would of cost. I did buy a new revo shaft thinking I might need it in case mine was bent. That and a couple of bearing and shims. Which are used on other RC too so had those laying around. If you can find some spacers you don't need two of each. Just one on the end for the shaft. I used two cuz they were almost the perfect width needed. Before I got carried away with the dremell.

I didn't mention in the picture area that I also removed the blocked area where the shift fork (I believe) went. Been a while since I have had a 2 speed tranny. Was blocking the light.

Thanks for the compliment guys.

	(#11)
Gee A Horse's Ass Offline Posts: 1,065 Join Date: Oct 2007 Location: Spokane WA	12.26.2008, 04:23 AM It is basically the mod in the first link below to run the revo slipper clutch. Which there are a couple different ways you can get the revo shaft and slipper to work for the 3905 tranny. I didn't use either of the ones that require you to drill a new hole into the shaft. I was able to use the existing holes that were on the revo shaft I ordered. http://www.rc-monster.com/forum/show...slipper+clutch Yes the 3905 2 speed will work and is a larger and stronger setup in IMO, but there are also mods that need to be done to it. More then the others mods need. Here's a write I did on the 3905 shaft used in the 3906 tranny. http://monster.traxxas.com/showthread.php?t=412386 To go alone with the mod theme, Here's another for using the 3905 steel idlers in the 3906 that I experimented with. They too are a larger gear then the 3906 was made for but they will work. http://monster.traxxas.com/showthread.php?t=412299 Thanks Goerge that area did get thinner as I made it "Better". Will keep an eye on how it wears. It's shimmed well and nothing but a bearing is in contact with it. After some heavy use that could change. A good idea with the gorilla glue and a disk. If my plan works I will have a new and improved cover before that becomes and issue. A few lessons learned while making of this one will make the next on easier and better. The process was easy and the idea was stolen from the G1 tranny. Just went the opposite directions they did and used lexan instead of aluminum. So no creativity on my part just making due with what I had on hand. Plus I had a little spare time while I was waiting for UPS to show up. They were few days behind due to adverse weather conditions. The tools came in handy but if determined you could make one of these with a pocket knife and a lighter to touch up the scuffs. Wouldn't recommend it though. Fostner bits and dremell accessories are not a requirement to start, make, or finish a project. The right tool will make the project easier and allow it to be completed faster. Time is the most valuable item to all of us, we all are always running out of it. We all want more of it. You can't go out an buy more time to have with your children, parents, or spouse. We get paid for our time. There are countless items that are marketed to us to do what. Save us time. Time goes by faster when you get older. Time is running out. Stepping down now. Buy a tool that will speed up your builds and save you time to spend with loved ones. The build is cheap. I already had the 3/8" lexan left over from when I made a rustler out of the stuff. So I can't really say how much that small chunk would of cost. I did buy a new revo shaft thinking I might need it in case mine was bent. That and a couple of bearing and shims. Which are used on other RC too so had those laying around. If you can find some spacers you don't need two of each. Just one on the end for the shaft. I used two cuz they were almost the perfect width needed. Before I got carried away with the dremell. I didn't mention in the picture area that I also removed the blocked area where the shift fork (I believe) went. Been a while since I have had a 2 speed tranny. Was blocking the light. Thanks for the compliment guys. Last edited by Gee; 12.26.2008 at 04:24 AM.