Mamba Max in a Savage? - Page 3 - RC-Monster Forums

Rtsbasic · 01:53 PM

Got my Mamba today! Along with a 540C-8XL and new UBEC. I'm really impressed by this setup, my Savage had more low end torque and more top speed than before, no hint of cogging at all, low speed feels almost like driving a brushed setup its that smooth. And the USB link, I love this. No more counting beeps or watching leds to program it, just plug it into the pc.

Temps are great, without a fan, 156.1F was the highest temp on the mamba, 143F on the 8XL. When I fit a fan to the ESC tomorrow I'm hopeful that will drop at least 20-30F, then I will bump the voltage up to 14 cells. I'm hopeful this setup on 14 cells will outperform my mates MGT with 18 cells and my old 9XL/9920 setup, mostly because his MGT is like 15lb, my Savage is now a cool 12lb 3oz.

Only annoying thing, is my radio range is significantly reduced compared to the 9920. Using an airtronics MX-3 set, its not much more than 100ft. Going to solder a new ariel onto the rx tomorrow and see if that helps. Oh and its a real pain in the you know what to mount, no decent place to mount it in a Savage without having excessively long motor cables. I think a small lexan "shelf" to mount it to over the gearbox is in order.

neweuser · 10.10.2006, 01:56 PM

For me, my range depends on where i mount my ubec.....

Serum · 10.10.2006, 01:56 PM

Great to hear it runs with succes rtsbasic!

Rtsbasic · 10.10.2006, 02:01 PM

The UBEC is held on to the battery power cables with a rubber band. Can't really move it further away from the reciever because the cable length. Might try seperating it from the main power cables a bit though.

Serum, I'm glad it worked too, would have been a shame to toast an ESC on its first run! :)

Serum · 10.10.2006, 02:02 PM

try flipping over the ubec or route your antenna a bit different..

Rtsbasic · 10.10.2006, 02:06 PM

The antenna comes out the reciever and straight up, using a custom mount (2 cableties :D ). I'll try moving around the ubec a bit before I next run it tomorrow. Hopefully its something simple like this thats causing the radio noise. The wiring isn't yet as tidy as with the 9920, so thats another possible cause of interference.

10.10.2006, 06:42 PM

I have yet to test the range with my spectrum moduleand hitec eclipse pro but tomorow i will try to go somewhere i can let rip and i will be able then to really see how good the spectrum is range wise.
I would suspect thought that the mamba has been excessively tested with the spectrum dsm system.

rtsbasic what timing you using at the moment normal?

Rtsbasic · 06:50 PM

Let me know how it goes with the spectrum mate, I'm thinking of upgrading the radio anyway - the recievers been repaired that many times i've lost count.

Used the lowest timing setting on its first run, to be on the safe side. Bumped that up to "low" for its next test run tomorrow. Also changed the start power to "high". If the temps are still good I'll keep playing with the settings.

Re-did some of the wiring tonight, moved the UBEC off the powercables, made & mounted a lexan plate for the esc over the gearbox, and fitted a 40mm fan. Will snap some pics tomorrow, it don't look too bad although the shape of the esc ment it wasn't quite as tidy to mount as my 9920. I can access the USB port fine without taking it out the car though.