Eagle Racing M06 custom

So I was able to do some test runs just to see what issues there were. It would spin out easily, even on gentle weight shifts. Here's a list of issues:

- Front monoshock mounting method stresses the upper arms causing them not to move properly which caused spin-outs.
- Steering link makes contact with tire when steering to the right, which also caused spin-outs.
- Lots of weight in the back and not much up front.

I rounded the front tires for more consistent contact patch and body clearance. I mounted them to an axle end and used my drill press to turn them with a file and sandpaper.




The position of the shock caused the arms to be stressed and angle backwards thus causing friction and not moving properly. I came up with a new setup that places the shock right over the arms for better and proper movement.

Before

After




For the steering issue, I made a simple steering stop out of a HPI rear wing riser. I just cut it to length so that the tire comes really close to the steering link and it doesn't limit the steering overall. Before, I had stops for both sides but it limited the steering too much and caused spin-outs, so I just kept the side that needed it.




Finished the Miata body. I plan on doing body lines so it doesn't look so solid and plain, and block out the holes.



Fits quite well  :=):


My current setup is as follows:
Front
- 35wt oil
- Unknown spring (sorry). I'd say it's in between Eagle blue and green springs.
- 5-6 deg camber
- 5 deg caster (estimate)
- About 4-5 deg toe out for parallel steering
- At least 140g of added weight (body has 21g up front making a total of 161g with body mounted)

Rear
- 10wt oil
- MST Extreme soft springs pink/gold
- 1 deg camber
- 2 deg toe in
- damper sponges

Power
- Mamba Max 4600kv motor & esc
- Spektrum DX3.0 tx/SR300 rx
- Futaba S9452 servo
- Stock Eagle gyro
- Gens Ace shorty 2s lipo 5000mah 60c

Gearing
- 89t spur
- 18t pinion
- Stock 18t center pulley
- TA05 36t diff pulley

Rollers
- HPI Cup Racer T-drift
- HPI MX60 6 offset 8 spoke wheels

After all these mods, it's drifting quite well now. It still has a low limit meaning spin-outs are still easy but overall control is increased. At first, it was a bit hard to break it into a drift since all that rear weight provides so much traction so I stretched the gearing a bit for more wheelspin (ran a 90/14 spur/pinion but now is a 89/18) and messed with springs, preloads, camber, toe and weights (all the normal stuff). At one point, I stuck a Masterlock up front and it actually drove great. I also increased the front track a bit to help give the front end a bit more strength. I have yet to test it on a track layout since garage testing doesn't tell me everything. But right now I'm overall pleased with it.

I'll be experimenting with a brushed setup as well, especially since the motor and esc will be a bit lighter.