Kershaw Designs?
 

who runs there motors? im looking for somthing to run in my mayhem st just for bashing and i love the price :)

ill be running 6s with the xerun 150a.

I was thinking of the 44x74 9xl or the std size 36x74 10xl . will there be a huge difference in torque between the 2?

Dan over at kershaw swears up and down that his kd motors are not just rebadged feigaos, and that they were built specifically for him.

This may be true, they are a unique color and have kd specific badging. However, they have the exact same specs as feigaos, and are physically the exact same size. I wish he were a member here, I don't want to speak bad of him or his products, I have had very good dealings with him and got some killer custom work done fairly cheap.

My heart of hearts tells me these motors are no different internally than a feigao, and it's what's inside that counts.

Buy one and show us an inside pic!!

just rember when buying brushless motors, you get what you pay for

I have had no luck when dealing with Dan, and I have tried on many occasions. Personally I'd consider other alternatives.

Wasn't there issues with those motors when revving over 30k? or was it 40k?

9xl (1695 kv) x 22.2v = 37629 revs
10xl (1660 kv) x 22.2 = 36852 revs

That's good revs with a good motor but I don't know much about those ones.

I e-mailed Dan and asked what specifically is different about his line of motors. I will post his response when I get it.

I'm pretty sure they're re-badged KD motors. Dan is a good guy to work with, he has always replied to my E-Mails quickly and been very helpful. I'm a little unsure on some of his setups, using multi-speed transmissions in an electric for example, but his stuff seems to work well.

More than one way to skin a cat guys... Not to say that Dan's stuff won't get the job done, but the finished product will speak for itself. I have owned a few of his chassis and motor plates and they will get the job done. Not on the same level as rcm products though. As for the motors, they will be feigao clones of some sort, so they will perform as well or worse. A xl 36mm motor with a kv around 1500 will be ok for 6s. I used a feigao 14xl on 8s and it did well. If you can swing the extra money get a castle 2200kv motor, and just gear down if you want to run 6s.

well, there's only a couple things inside the cans. Perhaps, PERHAPS Dan addressed them. I'm 99% sure his "purpose built specifications" are external, ie: screw fastened front endbell, dark blue.

What kind of problems do the feigao motors have? Any body know anything about the bigger 44mm motor?

feigaos CANNOT be run over 30,000 rpm, or they burn up. Extreme care has to be taken not to overload the motor, or they burn up. Temps have to be monitored very closely during initial runs, to get the proper gearing for a light enough load so they don't burn up. Also quality control is hit or miss, sometimes looking at them wrong will (you guessed it) burn them up.

The 44 and 45mm versions are just larger pieces of crap.

All that being said, all of us have owned and ran several feigaos, with dilligent care it can be done.

A higher quality motor is much more resilient to gearing changes and load, proper test runs and temp monitoring are still necessary, but once you are set up you can run without worries.

With a feigao you always wonder, "Is this the day my motor will die", and it very well could be.

well the only thing I've found that is close to the amount of $$$$ I want to spend is the medusa 36-70 but since there not making them any more it makes me nervous buying one.

Check out the neu motors website. They are filling a gap there with medusa.

solved :whistle:

http://204.186.93.64/BrushlessMotors-KD.htm

Kershaw Designs Revolver XL 9xl 1845kv


http://www.himodel.com/electric/1845...0_3674-9T.html

cheap china motor 9xl 1845kv

even has the same pic lmao!

I recently had a bad dealing with him also.. had to file a paypal claim and just get my money back.
phil

I run a $36 Hobbycity KD 9XL motor in a Revo but as I am geared for 30mph and have mechanical brakes not motor brakes and retain the two speed transmission, I'm not stressing it, but it still gets to 130-140f. They can be run, but it's best to consider them disposable.

Kershaw stuff is best described as functional. It works, but with no bells and whistles or extraordinary machining. I'll probably get his Baja conversion since Mike's seems to be delayed or canceled.

I would like to see that baja conversion... Googled it but no pics that I can find.

As for the cheapo motors, if you want cheap get a feigao, either from Mike of OSE. As for feigao clones, they are hit or miss, and a waste of money. Buy a decent motor, and speed control and you will get good use out of them.

well, Dan at Kershaw could have had an outside firm do the windings, or he could have had a stronger or more reliable rotor built. But he didn't. As we all expected it's a dressed up feigao. His response to my query about his specs:

"In all honesty, the Feigao 580L and KD motors work on the same technology, but the KD motors have a screw on endbell as opposed to the endbell being press fit into place. If you can fill me in on the specs below for your car, I can make a recommendation on the gearing that should be sued. then your motor should last multiple RC seasons...

- Model of car
- Weight
- tires used

Should I add you to the list for those that get the email newsletter I send out?

Dan Fischer
Kershaw Designs
Custom RC Car Designs"

i scoured their site and saw nothing about medusa. Can you fill me in?

Yes me to. I'm dieing for a 36-80 that would be the prefect motor for my setup

I've contacted Feigao to make motors for me, so I can attest that they will make what you ask if it's within their capability (current product offerings, or high enough qty to make a new "size"). I'll say that KD's motors are Feigaos. I don't think Feigaos are that bad, but they do run hot. Paralyzed's example is something to really take note of...a transmission really alleviates a lot of load from the motor vs. direct drive and his 9XL still gets hot (although the Keda motors from Hobbycity are even worse on efficiency than real Feigaos). Feigao can make decent stuff if you make them do so, but I doubt Kershaw asked for anything more than their standard motor in different colors and sizes.

As for Kershaw, I've had bad dealings with him also. He ripped me off on 40% the price of the product. That sounds like a lot, but it was a small product (low cost), but instead of making things right, he wanted the few bucks extra instead of satisfying a customer and possibly having return patronage.

I don't think his motors are that crappy, but I will say his customer service is. He runs his business as I'll-get-every-buck-out-of-you, instead of other small RC businesses where they care more about the satisfaction of the customer (and are smart enough to know satisfaction means return patronage, referrals, and more money in the long run).

sheeeeeit e'rybody has seen that already:lol:

thanks for the link anyway!:yes:

I'd have to agree with this based on my dealings with him. The quality of the items was fine, but the service I got was sub-par, even when items didn't arrive it was an uphill battle getting a resolution.

I dont buy his electronics stuff, but have bought some of his conversion stuff and his stuff is pretty good and customer service has been there for me. again for electornics I say no after the reviews on him, but his custom stuff is top notch like the 1/6 scale flux among other stuff.