Medusa Afterburner V2 BL motors

[TexasSP]

Body off for the testing. I will probably do a new body and cut vent holes in it as the traxxas bodies are too flimsy to cut into. I was doing some more testing and the controller had to be really stressed to get over 130 so I think I am good there.

[Cain]

Originally Posted by tom255

50mm motor came with flat spot on full lengt on shaft.

Does the 60 2000kv V2 come with a flat spot??


Can someone explain the 920W, 87A, 105A, and 30V values as far as how they relate to each other for this:

MR-036-060-2000V2-5 2000RPM/V 1.70A 0.006 920W 87A 105A 30V 36 x 60mm

Is 920W the watts that can be produced sustained or peak? Would a peak for this motor be 105A x 30V = 3150W??

Assuming a 14.8V setup that is rated at 120C continous, how do I determine the possible amp draw on the batteries, or, is it limited to a max 105A?


Trying to decide on some batteries here but not sure if my max amps rating that would be pulled is 105A by the motor, or thisL

3150W / 14.8V = 212Amp peak? (got a chart here that breaks it down this why by different voltages)

[suicideneil]

Watts = volts x amps.

920watts would most likely be maximum continuous output.
87A the max continuous rating.
105A the max peak rating for 30 seconds or so.
30V the max rated input voltage.
1.70A is probably the idle current.

In theory, the max current draw you will see is around that 87A area, but peaks will be higher, up around 120-130A usually, depending on vehicle weight, gearing, kv rating of the motor etc etc.

920W / 14.8V = 62A continuous, but as a general rule anything that can provide 80amps or more is fine; the higher the capacity & C rating, the better ideally.

[Cain]

thanks for the info!

[Maciolus]

I have just finshed my latest conversion. HB Lightning 2 Pro Evo, MMM, 6S1P A123, 14/46 and Medusa 36-60-1600.

That motor is absolutely amazing! I have recorded 1807W peak
http://picasaweb.google.pl/Maciej.St...79480907914834

Ambient temp around 65F, motor after 10 min run 115F

Now I need 36-70 for my truggy and 36-50-3300 for B44 :)

[killermmn]

not bad!!

[sikeston34m]

Originally Posted by Maciolus

I have just finshed my latest conversion. HB Lightning 2 Pro Evo, MMM, 6S1P A123, 14/46 and Medusa 36-60-1600.

That motor is absolutely amazing! I have recorded 1807W peak
http://picasaweb.google.pl/Maciej.St...79480907914834

Ambient temp around 65F, motor after 10 min run 115F

Now I need 36-70 for my truggy and 36-50-3300 for B44 :)

Nice!!!

I've been wondering about these motors for awhile.

If you wanna see even more bump, you should try it on 6S Lipo. Something in the 20C-30C. Fit in as many mah as your battery tray can hold.

This is the setup I wanna try in an E Revo or an E maxx.

Same motor as yours
Mamba Monster V3
6S 20C 5000mah Lipo (Should be good for 100amps continous)

What Mod 1 Gearing would be best to run in a heavier truck like this?

What top speed should we gear for? I've seen anything much over 50mph in a Monster Truck is just asking for huge tumbles. LOL


Nice Watts you're putting out there. Thanks for the Graph. Nice Info!

[Maciolus]

I will probably try 6S 5000mAh Zippy. I think power peaks will be above 2kW :D

That will be perfect combination for Revo or Maxx.

Try to calculate optimal gearing with Parameter Solver:
http://scriptasylum.com/rc_speed/_solver.html
This is very useful tool.

[Unsullied_Spy]

Do you need to cover up the holes in the motor? I've got a RC-M heatsink clamp with a trimmed washer on mine but haven't run it yet.

[Maciolus]

Originally Posted by Unsullied_Spy

Do you need to cover up the holes in the motor? I've got a RC-M heatsink clamp with a trimmed washer on mine but haven't run it yet.

I use lathed Mike's front NEU cover to protect front of the motor and insulating tape on the rear.

[tom255]

I am pretty satisfied with medusa 60mm and 2000kV motor. It works on my truggy very well! Exact power for racing dont need more! For speedruns and bashing maybe not enough. I use fan additionaly and temps never go over 60c~140f
Mine had same issue like on feigaos, rear endbell on hard racing came off. So drilled 2 holes from each side and screwd 2-2mm bolts there like on NEU's.
BTW 60mm can dont have any flat spot
One cons more: When i run motor in my hands i feel that rotor is not balanced well, on some speeds it resonate and i think it can affect on bearings some time. So quality is not the best. But for sure one of the best choise after feigao

[BrianG]

Anyone have temps from running stock, and then again after the holes are covered up? I'd imagine there would be some rise in temps covering them. Instead of using tape on the rear, how about some metal screen instead? Would keep the larger stuff out yet allow air to circulate. Of course, some dust would get in there, but it's the big stuff that's a problem...

[suicideneil]

Who likes good news:

From: Neil Ward [mailto:suicideneil@hotmail.com]
Sent: Thursday, October 02, 2008 2:20 PM
To: info@medusaproducts.com
Subject: 70mm Medusa motors



Hi there. Just curious if there was any news on the up-coming 70mm V2 medusa motors. Last I heard they were due late september, but Im guessing the sudden popularity of the 60mm versions amongst r/c truck owners has pushed back the eta somewhat. Any info is greatfully received.

Yours sincerely, Neil Ward.

Neil,



No, just other delays in getting parts for the prototypes and then testing pushed it back some.

We’ve tested our prototypes and all is well. Production is now gearing up and we expect to have some late October.

Shortly all the motor info will be added to our web pages with pre-orders being accepted.



Regards,



Jeff Little

Medusa Research, Inc.

Engineered Products for the RC Enthusiast

Yay!

That is some good news! Cant wait to see what KV's they will have.

[lutach]

First prototypes will be 1600Kv.