New Project, Revo Truggy style

[Sammus]

Originally Posted by entjoles

those springs should be ok, i used purple frt and rr on my g3r revo and it was great with 60wt oil, but it was heavier then the stock chassis conv.

also something to think about,i noticed that no matter how stiff i made it , it wouldnt come back up, i had to fit my suspension arms , they were binding and i had to ream the pin holes and lightly sand the end of the arms to get free movement, no binding at all after i did this , w/o shocks i could lift arms and they would drop free as could be, no resistance at all

Originally Posted by Lonewolf039

Yup, I noticed that too after I had run my revo for 3-4 gallons. I reamed all the pin holes and polished the shafts. The suspension was really free, at least for a while. I usually run in a big sandpit, so my revo takes a lot of abuse.

This happened with my revo too, if you cbf removing the pins and cleaning it properly, a spray with some silicone lube with one of those thin directional tube things around the hinge pin joints makes about 1000x better - its just dirt etc. getting trapped. Or you could take it a step further: my brother got a heap of tiny ball bearings and completely bearing-nated his savage suspension (shocks and inner/outer swingarms at least) and it had unbelievably smooth suspension - zero difference if you pushed it down a let it come back up compared to lifting it and letting the weight of the vehicle compress the suspension.

Originally Posted by Revracer

you could always get some compressed air cans and just spray the dirt off and make sure to really spray those tight areas. always works for me

Be careful here around bearings (and not crazy bearing suspension bearings, wheels any other bearings, motor and wheel for example) compressed air will force little bits of dirt into your bearing seals - I learned this the hard way. Air compressor is great with a spray bottle of metho for cleaning your nitro vehicle, now I always do anything near a bearing with a paper towel though.

[Lonewolf039]

OK, I finally got a couple of days off and got my Evo together. Still need to do a few little things like clean up the wires some more and play with the settings on the MM. The 50% brake setting gives instant endo's I found out, very powerfull brakes. I am running 50% punch control as well, and really like the smooth power delivery, and it will still wheely on demand. The Trakpower batteries are awesome, they hold their voltage right until the cutoff, and I have it set at 3.2v/cell as an extra safety margin. I ran 4 packs so far, and the temps were really good. 120-140 on the MM esc with no fan, 90-105 on the motor and room temp on the batts. I am running the 14 tooth pinion for now, can go up if I want to go faster. Speed calc says 37-38 MPH, which looks about right.

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 14
Total Voltage: 14
Motor KV: 2084
Tire Diameter (inches): 5.8
Tire Ballooning (inches): .25
Motor Current Draw: 0
Motor coil Ω: 0.0073
Spur/Pinion Ratio: 3.29 : 1
Total Ratio: 14.12857 : 1
Tire Circumference (inches): 19.79 inches (502.72 mm)
Total Motor Speed: 29176 RPM
Vehicle Speed: 38.7 mph (62.17 km/h)
Effective Speed Rate: 2.76 mph/V (4.44 kmh/V)
Estimated Adjusted Speed: 37 mph (59 km/h) - 5% loss
Effective KV Value: 2084

OK, now for the pics




Not real happy with the wiring yet, like to get it a little neater.





Had to clearance the hump a bit to fit the smaller pinions.

I love how simple this setup is.

[Lonewolf039]

Pinion came off during first run, I forgot to lock tite it
Luckily it stayed on the chassis and I didn't have to go looking for it.


Also ground a fair bit off the ends of my wing doing wheelys



I am really happy with the truck overall, now I just have to get some more batteries.