Will u mount the brake disc on the rear drive axel?
It will be on the front driveshaft which is also where the front arm will mount. I am probably running a 50 chain and sprockets instead of a conventional chaincase so i may put the brake caliper on the lower sprocket. The front arm will have bearings to allow it to be mounted on the front driveshaft ,probably 1 inch .120 wall. It will also have those 11 inch front idlers as seen in the earlier pic. The front driveshaft will also contain the sprocket to drive the first chain to the rear front arm mount shown in the earlier picture. That piece will then have a second chain driving to the rear axle. The two chain setup is necessary to have constant chain tension throughout full front arm range. The rear scissors will be externally mounted like the rush to give more room for the chain drive in the suspension.
What happens when you wheelie over a rock? Think the drivers can handle a large impact?
We shall see. Hopefully it is as strong as the 2 idlers a conventional sled runs.
Attached is a CAD i have been working on for the rear rail extensions. They will slide along raised edge of the Xtra-12 rails and have a central slot running the length of the extension and be secured with 2 bolts per side. the stock tensioners will push on these to adjust the whole extension backwards. The two vertical slots are bend tabs. The piece will be bent at opposing 45 degree angles to give a 2 or 3 inch offset to go around the rear drivers. Once bent they will be welded overtop. Not sure to go with 3/16 or 1/4 mild steel.
The 1-1/8 rear aluminum hex axle will be supported by 2 1 inch bearings in 3 bolt flanges that bolts to these plates as seen.
I will mill the 1-1/8 hex down to 1 inch round at the ends where the bearings mount, as well as any spots where hex drive is not needed to save weight. The hex shaft will drive the 2 RT1000 10 tooth drivers as well as mount the hex pattern hub and sprocket.