Nice project, I think you'll be very pleased with the results. I mid-motored a TRX-1 a few years back. Ran a Green Machine 2R on 2S on turf. It was a blast to drive. Some guys get too wrapped up in "optimal" weight transfer on takeoff, flipping layshafts, etc. Just flip the trans around and find a reverse rotation motor solution and you're golden. Which is exactly what you are doing. Good stuff here.
I raced a mod motor xx in 1999. My dad, an engineer drilled thru the gear box to reverse the gear box. The chassis was custom made with graphite FRP. The battery was also custom 2x3 nicd. I actually restored and raced it last year. It's not durable but was able to keep up mostly with modern vehicles. My xxx tho was much much slower
I think I would try to make a brace to go between the 2 rear chassis plate screws on the left side that wouldn't interfere with the pinion. Drill and tap the piece or use longer screws and nuts. Make it raised in the center, and then remove some of the material away from in between the post to get a direct shot at the motor screw.
And now you have the fastest reversing losi in the world. A carbon fiber chassis would solve your problems. The Tamiya in the background looks interesting.
For the lower motor mount screw why not use a small drum sanding bit in a dremel and round out a small notch on the inner part of the chassis. That way allowing the driver bit to fit in without taking out the whole transmission.
Yeah I thought about that, but since this is a molded chassis, I do want to minimize holes like that which can create weak spots along the side of the chassis. Another option would be to get a 2mm or 2.5mm (depending on the screw head you use) allen wrench and cut the L-shape so that it fits into the space available.
I will start with a XX body and see what kinds of cuts are necessary to make it fit. If it starts looking way too hacked up, then I'll have to think of something else.
Nice project, I think you'll be very pleased with the results. I mid-motored a TRX-1 a few years back. Ran a Green Machine 2R on 2S on turf. It was a blast to drive. Some guys get too wrapped up in "optimal" weight transfer on takeoff, flipping layshafts, etc. Just flip the trans around and find a reverse rotation motor solution and you're golden. Which is exactly what you are doing. Good stuff here.
I raced a mod motor xx in 1999. My dad, an engineer drilled thru the gear box to reverse the gear box. The chassis was custom made with graphite FRP. The battery was also custom 2x3 nicd. I actually restored and raced it last year. It's not durable but was able to keep up mostly with modern vehicles. My xxx tho was much much slower
I think I would try to make a brace to go between the 2 rear chassis plate screws on the left side that wouldn't interfere with the pinion. Drill and tap the piece or use longer screws and nuts. Make it raised in the center, and then remove some of the material away from in between the post to get a direct shot at the motor screw.
I did remove a little extra last night. Just a tab of material between the screw posts and that seems to do the trick.
And now you have the fastest reversing losi in the world. A carbon fiber chassis would solve your problems. The Tamiya in the background looks interesting.
Nope. Just need a speedo that supports reverse rotation. Easy fix.
For the lower motor mount screw why not use a small drum sanding bit in a dremel and round out a small notch on the inner part of the chassis. That way allowing the driver bit to fit in without taking out the whole transmission.
Yeah I thought about that, but since this is a molded chassis, I do want to minimize holes like that which can create weak spots along the side of the chassis. Another option would be to get a 2mm or 2.5mm (depending on the screw head you use) allen wrench and cut the L-shape so that it fits into the space available.
What kind of body are you thinking of using? You probably have to do some modifications to make it fit right?
I will start with a XX body and see what kinds of cuts are necessary to make it fit. If it starts looking way too hacked up, then I'll have to think of something else.