Direct Drive to Diff E Revo Build

[sikeston34m]

Originally Posted by zeropointbug

http://www.greathobbies.com/producti...d_id=EFLM4060A

Have you considered the E-Flite outrunners? I hear they are very well received and have awesome power.

I don't get it, how can you be using a 650kv motor on 6s2p? This SHOULD be getting you over 50mph then?

E Flite outrunners look VERY well. They have caught my eye for outrunner setups. Opportunity just presented a deal and I picked this New AXI 4130/20 for $100 shipping included. I thought it was the right thing at the time.

There is a ray of hope for this setup with the lower gears. First I'm going to test the 4130 further. I expect to see the cogging go away, gain some really good low speed driving. It should have explosive acceleration, but not much top end.

The 3520-7 with 650kv does get me over 50mph in the Emaxx with a 4.57:1 final reduction ratio. I once installed a 3530 (don't know how many turns), but on 6S2P A123. It was VERY impressive!! Too bad the drive dog stripped on the transmission output shaft in the very 1st run! I got about 2/3 of the charge out, and it went out. Acceleration was crazy fast and the tires ballooned so much, I never really seen it's top end. Very hard to control, if over anxious with the trigger finger. Top Speed on it had to have been in the 60's. I have another brand new 3530 waiting on the New E maxx to tame.

I decided to shrink my Lipo's in Blue. Now they closely match the Revo Chassis. They are made from 5000mah 10C cells. Each pack 2S2P will give up 100 amps Continuous and allow me 150 amp bursts. I think this 4S Lipo setup will give me all the amps I'm going to pull and more, plus some healthy runtime.

I should be working on making it lighter.

[BL_RV0]

how much does it weigh RTR?

[sikeston34m]

Originally Posted by BL_RV0

how much does it weigh RTR?

Without Batteries, it weighs 9lbs 8 ounces. This is a little heavier than I would like for it to be.

There is alot of material on the battery compartment sides that can go. I think it would be cool to draw out some lettering there that says "E Revo", then remove all the material except the lettering and a border. The compartment bottoms I will leave solid. It's a battery shield and worth the extra weight IMO.

There is some material on the bottom mount that can be removed. Let's not get too carried away though. We don't want it to flex.

The ESC mounting plate can lose some weight. We will leave it solid directly under the ESC to retain the heat sinking.

Each 2S2P 10,000mah Lipo weighs 16.7 ounces each. Isn't this about the same as alot of 7 cell Nimh batts weigh? This puts the truck at 11lbs 9 ounces.

I have a 4 Series 4000mah Lipo setup that weighs 14 ounces for the pair. RTR it would be 10lbs 6 ounces.