Lightweight E-maxx tips needed
 

I want to build a lightweight E-Maxx 3905. So far I've got:

- neu 1515 3d & mgm 8s140a & dim.eng. bec;
- rpm true track, rpm front arms & axle carriers;
- fullforce rc carbon turnbuckles;
- lunsford titanium hinge pins;
- one servo;
- 4 shocks;
- single motor mount;

I still need:
- Wheels: proline 0 offset vtr&caliber?
- Lipos: what amp draw can I expect on 6s, geared for 35-40mph?
- Titanium pivot balls: Lunsford ones are too expensive. Any other good ones?
- Shafts: are steel cvd's lighter than stock plastic shafts?
- More ideas to get rid of some weight?

I'm not getting the g4, flm or xtremerc chassis.
I know serum's 3906 e-maxx was 6.8lbs fully loaded, so that's my target..

CLICK HERE I posed the same question not too long ago in my build thread and got alot of great answers and links to go along with it(Serum's being the biggest inspiration), you should check it out! The subject starts on page 10.

Good luck!

thanks. just went through your thread.
Will the ue pillowballs fit the 3905 e-maxx?

Just another thought here, if you are going for a lightweight Emaxx, I would suggest ditching the 1515/3D. 2 reasons, You'll need to run 5s or better on that motor, and you dont need a 1515 series if its light. I would opt for a 1512/2.5D or the CC/Neu 2650 and stick to 3s or 4s packs. A much lighter setup overall and will have plenty of power even if you end up at the 8lb mark.

Thanks. You're right about the 1515. I'm looking at the tenshock motors right know, same dimensions as the 1512 and 6 pole. I'll use the 1515 when I switch to your sand paddles. Serum used a lehner basic xl or xxl, not sure which one.

I already have the mgm controller, and want to use 6s for max efficiency, so the mmm2650 isn't an option.

I'll be driving in the sand with this thing and want to try what works best for me, a very light setup, or a heavier setup with sand paddles. With my Muggy I've found that driving in the sand is pretty demanding on electronics.

Definitely is demanding. I've noticed it with my Rustler VXL as well. I had it setup to get great temps on the street and around the house. I threw on some Sand Paws and dropped 2 teeth on the pinion and hit the sand. My temps were out of control.

I'm pretty sure its do to the uncontrollable spinning of tires in the sand, creating a no load on the motor effect. Its fun but I have to watch the temps and time of my runs.
I recently set it up with a Neu 1509/1.5D and MMM. Temps are unbelievably cool on the street and around the house. So I'm curious how it will work with the Sand Paws on the beach.

One suggestion is to seal up those Paddles. Make sure no sand can get into the wheels.

I will! I just did that to my muggy wheels. 2 of my stock Muggy wheels had almost 100grams of dirt in each wheel..now I know why al my chassis screws kept coming out.

I have a 1300kv 60mm medusa on 6s in my mini ste(4.8lbs). It's a perfect setup, stays cool on-road and in the sand aswell.

Yeah notice that my build thread is not focused on a light weight truck (my truck is about 11lbs) but half way through I thought one day I might have the itch to build a light Maxx, but no time within the next 3yrs can I afford it.

If you plan on using 6s I'd say give up this time on the light weight setup.

I think the balls would work but you might have to drill a bigger hole for the threads to go into. Before buying I would ask some one like rivermaxx, sweetride, bigdumbredneck, mkrusedc.

Yes, they are the same as the factory balls. If you want to save weight though get the traxxas teflon coated aluminum balls. not as strong as titanium or steel but alot lighter.
As far as paddles in the sand I would think youd want to gear up because the paddles always have very little traction and more paddle speed displaces more sand creating more movement. Probably be easier on electronics also.

why?

I haven't read any good things about the alu ones, I read they break easily. You think they'll hold up?

I'll try different gearing with the paddles. Starting on the Muggy.