RC-Monster Forums - View Single Post - OFNA Ultra MBX Conversion

Batfish · 04.28.2006, 11:24 AM

Thanks for the compliments so far :003:
CCristo has instructed me to say that if you like something, he did it. Anything you don't like, I did. :005:

So here's some information on what we've done so far.
The chassis is custom cut from 3mm aluminum and extended 1 inch (to make mounting the batteries easier). This makes the chassis approximately .5 inches longer than most of today's 1/8th nitro buggies.
A UE 105mm dogbone was used from the center diff to the rear diff. The original OFNA front dogbone was used from the center diff to the front diff.
A rear brace was cut to go from the center diff to the rear diff. This is where the battery trays (cut from a stock E-Maxx chassis) are mounted. This rear brace will also (probably) be the mounting location for the ESC.
A front brace was cut to go from the steering posts to the center diff.
The steering linkage was swapped from the right to the left side to accomodate the motor, which will be mounted towards the front of the buggy rather than the rear (also to increase room to mount the batteries and help off-set weight).
The steering servo is mounted laying-down on the chassis.
The brake servo (mechanical rear brakes) is standing up next to the center diff using Traxxas servo mounts.
I swapped the c-hub suspension that was on the vehicle for the PBS suspension (personal preference).

This buggy will be powered by 4s2p 6400mah FMA/Kokam lipo packs, BK 9920 ESC, and Lehner 1940/6 motor. Gearing will be in the 26-30 MPH range. This buggy will be for racing only, so higher speeds are not needed.

About 3 or so hours of work remain before it can actually be run, but I'll make sure I have my camcorder with me when it makes it to the track :003:

There's a guy at our local track/shop who is an R/C geek and a CAD designer. When he saw what we had done so far, he wanted to "CAD the heck out of this thing", as he put it. I may actually let him have the buggy for a few days so he can model it and see what more can be done with it. Maybe we can even get an actual conversion kit out of this :003:

More to come...

	(#10)
Batfish RC-Monster Aluminum Offline Posts: 617 Join Date: Apr 2005 Location: MA	04.28.2006, 11:24 AM Thanks for the compliments so far :003: CCristo has instructed me to say that if you like something, he did it. Anything you don't like, I did. :005: So here's some information on what we've done so far. The chassis is custom cut from 3mm aluminum and extended 1 inch (to make mounting the batteries easier). This makes the chassis approximately .5 inches longer than most of today's 1/8th nitro buggies. A UE 105mm dogbone was used from the center diff to the rear diff. The original OFNA front dogbone was used from the center diff to the front diff. A rear brace was cut to go from the center diff to the rear diff. This is where the battery trays (cut from a stock E-Maxx chassis) are mounted. This rear brace will also (probably) be the mounting location for the ESC. A front brace was cut to go from the steering posts to the center diff. The steering linkage was swapped from the right to the left side to accomodate the motor, which will be mounted towards the front of the buggy rather than the rear (also to increase room to mount the batteries and help off-set weight). The steering servo is mounted laying-down on the chassis. The brake servo (mechanical rear brakes) is standing up next to the center diff using Traxxas servo mounts. I swapped the c-hub suspension that was on the vehicle for the PBS suspension (personal preference). This buggy will be powered by 4s2p 6400mah FMA/Kokam lipo packs, BK 9920 ESC, and Lehner 1940/6 motor. Gearing will be in the 26-30 MPH range. This buggy will be for racing only, so higher speeds are not needed. About 3 or so hours of work remain before it can actually be run, but I'll make sure I have my camcorder with me when it makes it to the track :003: There's a guy at our local track/shop who is an R/C geek and a CAD designer. When he saw what we had done so far, he wanted to "CAD the heck out of this thing", as he put it. I may actually let him have the buggy for a few days so he can model it and see what more can be done with it. Maybe we can even get an actual conversion kit out of this :003: More to come... Joe Electronics run on smoke... if you let the smoke out, they stop working.