Brushless Power for the Durga! Help needed

[Vin]

@psuar

Thanks for the advice! What kind of batteries are you using on the Mamba?

A friend of mine has a 7700kv in his Durga. He wanted a high top speed and fitted a 25T pinion in it. He already cooked his brand new Intellect battery!


I was planning to use the 17T on the Durga and limit it by dropping the timing a bit. I use 6 cell NIMH batteries (Intellect 3800 and VapexTech 4300)

[psuar]

Hi Vin

the problem is the mamba 7700 is a 1000 watts motor... so it will cook your bateries without proper gearing. for the 7700 I used a 15T pinion, but the bateries were always too hot and in one race the SC stoped and never resurrect again...

now Im using the 6900 wich is milder and with 17T pinion, bateries and SC were warm...with excellent top speed and torque.

I usually ran with GP3300 or Intellect 4200

[Vin]

Originally Posted by psuar

Hi Vin

the problem is the mamba 7700 is a 1000 watts motor... so it will cook your bateries without proper gearing. for the 7700 I used a 15T pinion, but the bateries were always too hot and in one race the SC stoped and never resurrect again...

now Im using the 6900 wich is milder and with 17T pinion, bateries and SC were warm...with excellent top speed and torque.

I usually ran with GP3300 or Intellect 4200

Hi Psuar,

How did you set up the ESC (like with punch, timing etc)

I just fitted the Mamba Combo to the Durga, gonna run it tomorrow. I only did a small test run yet, what a power!!

[pattux]

I'm thinkinf of buying a Durga together with MambaMax ESC, 5700KV Mamba motor and a 3s Lipo. Yes it will be fast, realy fast. My DX7 TX will do much of the limiting using a mixer. Switching the mixer on or off will enable/disable the limiter during runtime. Nice for the straights

I'm looking at the following Lipo's:
Hyperion CX - 3S 5350mAh, 85.6A Continuous (16-25C)
Weight: 350gr, Size: 29 x 44 x 138 mm

Hyperion CX - 3S 4250mAh, 76.5A Continuous (18-27C)
Weight: 293gr, Size: 22.9 x 44 x 148 mm

I'm unsure if they will fitt inside the Durga. Can anyone measure that up for me?

Thanks for the help.

Pattux

[Vin]

Dude you don't have to post your question in multiple topics.

I gave you the measurements already on Modelbouwforum.nl . 2S will fit, 3S probably too and if not you have to modify (dremel) the chassis a bit. Good luck!

[pattux]

I can't dremel too much away. The mounting posts for the battery will probably be in the way.

[manos711]

Hi there,
I have the durga DB01 and recently I installed the Mamba Max 7900. I am running with orion 3300 Ni/Mh battery, 91T spur and 17T I installed it with the quick set up as instructions, fine so far. It worked fine but just for a while becauase my front and rear diferential (where the belt goes) Mashed!!
Now I know that Slipper Clutch is a must in order to handle such power. Will I need anything extra apart from the slipper, in order to enjoy my super fast Durga??
Thanks for your help

[gargadud]

Hi,

I would advice you to rebuild the diff with the TRF metallic part (Diff Joint Item #51286).
After a big crash, I decided to check everything and discovered that the rear diff was showing signs of running quite hot (thanks to the Storm Evo 5.5)... It did not melted completely, as reported by some in the forum, but the pulley had slightly "melted" around the diff balls (ceramic one from Kanzen) and I noticed that the metallic plates were again moving freely (tried all the glue available on the market with no result).
Since the rebuilt, diff running smoothly and since it seems the TRF diff joint is longer than the Durga original part, the CVDs are well in place.

Cheers

[DCM]

LRP 5.5 14mm sintered rotor, 19/91, Tekin RS Pro and Tekin LiPo

[manos711]

Hi,
I am running Durga With Mamba max 7900, 17T pinion, 91 Spur gear. I did the quick set up. It worked fine but just for a while. The Ball differential mashed, front and back.
I will put the slipper clutch for sure. Should I put anything else in order to avoid internal damages?
Please post you help..