Haven't seen these esc at hobbyking before, Cheap!

[siberianhusky]

http://www.hobbyking.com/hobbyking/store/%5F%5F19441%5F%5FBirdie%5F200A%5FBrushless%5FBoat% 5FESC%5FNO%5FBEC%5F.html

37$ 200 amp esc, who'll be first? Gotta wonder when HK says it's cheap right in the add! They claim to give them a 2 minute load test of some kind though.

[megalops]

Good luck! No i havent ever used one. But....

[properchopper]

In all seriousness, having been around the outskirts of the electronic world for quite a while, I always wondered why they (marine SC's) are so (relatively) expensive. I bought a few 30A speedys (for helis) at eleven bucks each (they work just fine) . Given that marine SC's impose more strain I sort of understand, BUT.....

I may be innocently misunderstanding the complexities of SC design, and I'm sure marketing issues factor in, however I'd imagine that any decent designer could build the "better mouse trap" at substantially lower pricing. Just sayin' .......

[JackBlack26]

I agree with Propper, but I think the price may be higher due to the lower amount of units sold compared to other ESCs used in hobbies that might be more popular and also the abuse some of us put them through. Lets be honest and admit that most ESCs that let go of the smoke is because they are improperly used. I have heard from many members on this board that marine ESCs don't like to be run at anything but 1/2 throttle. I have yet to experience that issues running mine at any range. Just the other day, my son ran 3, 5000 MAH 4S packs through my 26" Prince at less than 1/2 throttle because he doesn't feel comfortable going balls out yet. The ESC never flinched or broke a sweat. This was using a PB 1500kv motor, Turnigy 60A ESC with a X447 prop.

The only ESC I have had go up was the one that came stock in my Genesis, and it was just after plugging it in. When I opened it up you could see the poor quality of the solder job on the FETs.

Only thing that scares me on these is the programming or the lack of it. Most people seem to complain about the ESC not programing right or not storing information once selected. I'll order one on my next order and see what happens. It states that every unit is tested at max range.

[kendt]

I personally dont think running less than wot should be an issue with any modern esc. Its not like the old days where they were using huge resistors to cut the power and in turn created a ton of heat. I have found in most cases with stuff from asia its not the design thats bad its the poor quality control. They dont seem to spend any time on the little details. sometimes thats enough to cause an issue and give a bad experience. I would never use anything from asia without first opening it up and going over it carefully(providing it is an item which can be opened for inspection). And so far I have little to gripe about. You could go through a crap load of those cheapie esc,s and still not spend the money that an etti or cc ice would cost.The one thing I would be suspicious of is the difference(or lack of) between the constant amp rating and the burst amp rating, it makes me think one of them has been fudged and my guess is the constant current rating.

[kendt]

http://www.hobbypartz.com/07e-c-platinum-150a-opto.html I just ordered one of these. Its got great specs and 30.00 bucks cheaper then the one I was planning on getting. For 30.00 i'll gladdly water proof/cool it myself.

[circus162]

Just bought 2. For 77.03 even if they end up as paperweights, it was worth the gamble. I'll let you know.
Rich

[Alfa Spirit]

This is a Mystery 200A, I' ve got the HIMODEL version waterproof and watercooled by me


z tuning 506.jpgz tuning 333.jpg

[Alexgar]

It's a suppo knock off I used one for about 6mths great until used in the 130-150 amp range but on a cc1512 run like a champ

[carlcisneros]

either a suppo or a knock-off.

look carefully at the cooling bock next to the ESC leads. some are actually TOUCHING the solder joints!!!!!!!!!!!!!!!

[Boaterguy]

on the SS the heatsink (air version) is touching the output wires to the motor, i watercooled it myself, went through 3 of them (1 of the ones ben used to sell, and two hk ones) without doing anything wrong (that I know of)
have you seen the "red brick" air ESC? looks like another suppo knock off.

[785boats]

Had another guy at the club yesterday with a new one, (SS series) & his motor would only cog over slowly. I pulled off the shrink for him & the plate was on the three solder joints. I've got it on my bench to see if I can get it working for him, but I think the damage has been done. That's three now in the last couple of months from three different people. Same ESC's but with different lables.
The fets on this one were covered in a clear resin which would reduce the cooling effects anyway, but worse than that the blobs of solder raised the plate up off the fets so it was only touching the fets by a small amount at the other end of the plate.

[Alexgar]

As suggested by me and others that these be reworked upon recieving or they will fail it's been proven 5mins of insurance will save you some greif and $

[Fluid]

I personally dont think running less than wot should be an issue with any modern esc...

Very interesting. Is anyone interested in what experts have to say about this, or do we just want to trade uninformed opinions?

http://www.castlecreations.com/support/faq/faq-general.html#gen6

http://www.rcgroups.com/forums/showthread.php?t=1225739&highlight=part+throttle

.

[Doby]

I have found in most cases with stuff from asia its not the design thats bad its the poor quality control. They dont seem to spend any time on the little details. .

True, but then again, Castle Creations has had some major quality issues as well. (and they cost a tad more $)