mid motor 2wd buggy conversion
#152
Joined: Jun 2008
Posts: 3,891
From: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
#154
#155
Thanks for the site info, looked at all the pages and found a bunch of builds. It looks like I would need to shim the tranny up about a 3/32 of an inch and make a brace for the tranny. Can someone post how they added the extra gear into the tranny? The battery mount and the other stuff would be easyer to deal with once the tranny is in and doesn't seem that hard once I have an idea, but I have access to a wide variety of metals and tools like a mill etc so it shouldn't be an issue, I'm thinking a couple little peices of angle aluminum for the battery.
#156
If you are going to build an AE conversion you can buy the X Factory trans and have a 4 gear trans. I am going to use this conversion that mounts a 4th
gear on the outside, I am going to add a twist to this concept as you are pretty much stuck with a 20T pinion to do this mod in the pic.
gear on the outside, I am going to add a twist to this concept as you are pretty much stuck with a 20T pinion to do this mod in the pic.
#157
Joined: Jun 2008
Posts: 3,891
From: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
If you are going to build an AE conversion you can buy the X Factory trans and have a 4 gear trans. I am going to use this conversion that mounts a 4th
gear on the outside, I am going to add a twist to this concept as you are pretty much stuck with a 20T pinion to do this mod in the pic.

gear on the outside, I am going to add a twist to this concept as you are pretty much stuck with a 20T pinion to do this mod in the pic.
#158
Yeah I am modifying the external counter gear set-up on my car right now. I am adding a 'cam plate' to the outside of the original motorplate using a pivot and slip joint for adjustment with the counter gear mounted to the cam plate.This will open up the gearing window wide open. I will post pics by thursday.
I was going to do something similar but build a new longer motor plate and mount the counter gear on a angled slip joint and then mount the motor in front of the counter gear also at an angle so pinion or spur changes are unlimited.
I think we are on the same page

#159
Thread Starter
Tech Apprentice
Joined: Oct 2009
Posts: 92
From: michigan
When I was using the losi trans I didn't have to put any spacers under it but then I put the x-factory 4 gear trans in my losi buggy. I can post some pictures of what needs to be shaved down on the chassis tomorrow
#160
Tech Adept
Joined: Sep 2003
Posts: 126
This thread is great and has me wanting to do a 4 gear conversion to a non-B4 franken-chassis too. Can I just buy the casing and be done or will I need a motor plate and internal gears also? Oh, this will be the 4 gear assembly from X-factory I am interested in. Thanks.
#161
Thanks for posting the pic. it looks like the extra gear is an idler gear with a screw and bolt holding it on with a spacer between the motor plate and the extra gear, that wouldn't be hard to do but then you have gear cover issues. I supose you counld put the extra gear in a place for the pinion of your choice as I run 27/78 so it would need to be mover higher up. I was on atomic carbons website and they showed how to flip the tranny so its still 3 geard and standard rotation which looked easy to do but would need some help getting the spacers that are needed.
#162
Joined: Jun 2008
Posts: 3,891
From: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Thanks for posting the pic. it looks like the extra gear is an idler gear with a screw and bolt holding it on with a spacer between the motor plate and the extra gear, that wouldn't be hard to do but then you have gear cover issues. I supose you counld put the extra gear in a place for the pinion of your choice as I run 27/78 so it would need to be mover higher up. I was on atomic carbons website and they showed how to flip the tranny so its still 3 geard and standard rotation which looked easy to do but would need some help getting the spacers that are needed.
Placement for the counter gear is crucial.Where I placed mine I have plenty of adjustment to move the motor forward ,or back..
The atomic carbon flip method works, but still doesnt optimise the torque roll of the motor to help with weight transfer.. This method is generally used when you dont have a speedo that will run the motor in opposite rotation.It accomplishes the same thing as reversing the motor rotation, but it does it by swapping the motor plate to the opposite side of the tranny..This has the same effect as running a 3 gear tranny with the motor rotation reversed. The only method to acheive the same effect as x-factory's layout is to go with a 4 gear trans style set-up. Doesnt matter whether it's inside the tranny or outside,but the tranny rotation is correct while the motor rotation is also correct to aid in weight transfer.
#163
Joined: Jun 2008
Posts: 3,891
From: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Please post a pic when u are done 2wdMod..
I was going to do something similar but build a new longer motor plate and mount the counter gear on a angled slip joint and then mount the motor in front of the counter gear also at an angle so pinion or spur changes are unlimited.
I think we are on the same page

I was going to do something similar but build a new longer motor plate and mount the counter gear on a angled slip joint and then mount the motor in front of the counter gear also at an angle so pinion or spur changes are unlimited.
I think we are on the same page


#164
Joined: Jun 2008
Posts: 3,891
From: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Punch X-factory into your search engine. you will find their webstore where all the parts you need for the tranny are available. At one time I do beleive that had a bundle that included all the parts you needed for the 4 gear tranny.
#165
Thread Starter
Tech Apprentice
Joined: Oct 2009
Posts: 92
From: michigan
you will need new internal gears for it because it uses b4 gears with an extra idler. you will need the x-factory motor plate. if you are doing this to a losi buggy like mine i would suggest using the x-factory rear bulkhead and x-factory shock tower like i used on my buggy




Can someone answer my q's on page 10