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Old Feb 13, 2013, 09:45 PM
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Canada, ON, Burlington
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Originally Posted by anlucas View Post
It's acceptable in cool weather and if you run the motor at low rpm for a minute or so before shutting the motor down on the warmer days.

The only problem I had was that the heat loosened one of these motors off the CS10 motor mount and the motor bell touched the motor housing. This was after running the motor WOT (1000-1200w) the whole 3min flight.

The CS12 housing looks like a stronger housing and there's much more clearance for the motor bell.

I like the clearance on the 12 blade shroud but the plastic motor mount area is not very solid. I really don't like the recessed screw openings as the plastic holding the motor is very thin under the screw heads. Now I'm noticing the heat is deforming the mounting area on my 12 blade shrouds and I'm running just under 1000watts. Some type of insulation may be needed to make the shroud hold together.
Will try and work on a fix tomorrow.
Cheers
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Old Feb 13, 2013, 09:52 PM
Lee Liddle
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Carrollton, Tx
Joined Dec 2006
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Originally Posted by 4stripes View Post
I like the clearance on the 12 blade shroud but the plastic motor mount area is not very solid. I really don't like the recessed screw openings as the plastic holding the motor is very thin under the screw heads. Now I'm noticing the heat is deforming the mounting area on my 12 blade shrouds and I'm running just under 1000watts. Some type of insulation may be needed to make the shroud hold together.
Will try and work on a fix tomorrow.
Cheers
You can reinforce the motor mount area with some good quality 1/8" aircraft plywood (not lite ply for sure). Rough up the plastic some and glue it in and soak it with thin CA. It will insulate and reinforce the stock shroud. It works well even on 90mm and 120mm fans.
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Old Feb 13, 2013, 10:05 PM
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Australia, VIC, Melbourne
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So that T-500 was done on a stand-off ?
Seemed a good result.
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Old Feb 13, 2013, 10:10 PM
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I used quite large 3mm washers, so they 'bridged' well across the main motor housing 'legs'.
It all felt very solid then, but I still wasn't impressed with the whole way it is done.

You mean a ply wood plate from the rear???
A painful effort.... LOL
"Plug and pray" would have been nicer! Can't they ever get everything right!!??? hehe

I don't like the 12 bladers at all really..... I will stick with 10 blades. Even if that means only Landers available (their 10 blade rotors).
Not even sure I will use the 4 CS12's I have in anything at all!
Though I have not tested ( but will) a Lander 10 blade in the CS12 housing (because it is a larger diam than the CS10)... to see what the 7 stators help, or make worse....
But even then.... that CS12 motor mount issue makes them a nuisance anyway.... sigh

Maybe there will be a V3......?????
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Old Feb 13, 2013, 10:20 PM
Lee Liddle
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Carrollton, Tx
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Yes the T-500 is 42mm in dia, so standoff is the only option.

The plywood reinforcement is glued in behind the stock motor mount. Then, for cooling, holes can be cut in the ply with a zip bit.
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Old Feb 13, 2013, 10:32 PM
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Canada, ON, Burlington
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Quote:
Originally Posted by Knife Liddle View Post
You can reinforce the motor mount area with some good quality 1/8" aircraft plywood (not lite ply for sure). Rough up the plastic some and glue it in and soak it with thin CA. It will insulate and reinforce the stock shroud. It works well even on 90mm and 120mm fans.

That is a good plan KL. Even if the screws melt through the thin plastic mounting area, they will hold in the plywood.
Thanks Eric
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Old Feb 13, 2013, 11:47 PM
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Originally Posted by 4stripes View Post
That is a good plan KL. Even if the screws melt through the thin plastic mounting area, they will hold in the plywood.
Thanks Eric
Not really 4stripes, unless you have a longer motor shaft. I think a 1mm carbon plate will be better.
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Old Feb 14, 2013, 12:06 AM
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Greece, Attica, Athens
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Quote:
Originally Posted by 4stripes View Post
I like the clearance on the 12 blade shroud but the plastic motor mount area is not very solid. I really don't like the recessed screw openings as the plastic holding the motor is very thin under the screw heads. Now I'm noticing the heat is deforming the mounting area on my 12 blade shrouds and I'm running just under 1000watts. Some type of insulation may be needed to make the shroud hold together.
Will try and work on a fix tomorrow.
Cheers
While I like Knife's solution, I am also interested with what you might come-up with.

In the meantime, I am switching some of my 1000w+ setups to alloy housings....

Have you guys seen these ?

http://rc-castle.com/shop/product_in...oducts_id=2921
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Old Feb 14, 2013, 12:18 AM
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Australia, VIC, Melbourne
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I have the 90mm version..... a hefty unit, somewhat like a typical Lander alloy housing. Even heftier! And also heavier than them.
I have some 70's on the way.
They are very well designed and made..... just a bit hefty and heavy. Somewhat overkill... like Landers are.
But the 90mms are bigger in dimension than typical 90's. The 70's specs are the same as 70's.... so hopefully they are not a wasteful in their overkill. hehe
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Old Feb 14, 2013, 12:19 AM
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United States, CA, Santa Clarita
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I have 70mm Housing in the works to accept 36mm dia inrunners.

Stay tuned.
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Old Feb 14, 2013, 12:26 AM
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Umm, would that be best done via something made with a typical motor 'mount' tube size - just to fit 30mm if people want to (29.5mm motors), but have an extension mount (alloy) like Knife does, with an extra bearing in that.... because you really want the motor out of the fan housing area, to allow full airflow still. ???

Hmmm, maybe some 70mm rotors have 36mm, or close, diameter rotor hubs anyway - I never measured one..... then it would be ok.
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Old Feb 14, 2013, 12:28 AM
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I have 70mm Housing in the works to accept 36mm dia inrunners.

Stay tuned.
Please let me know how many stators?
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Old Feb 14, 2013, 01:34 AM
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I have 70mm Housing in the works to accept 36mm dia inrunners.

Stay tuned.
Determined to hit that 52K are you ?
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Old Feb 14, 2013, 02:05 AM
Extreme CNC Alloy EDF
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Those cyclone 70mm housings are more than double the weight of my 70mm housings, certainly heaps cheaper to make in china without any complex CNC machining to do but whats the end result going to be? really high quality housings are not 'that' expensive anyway.
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Old Feb 14, 2013, 03:14 AM
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United States, CA, Santa Clarita
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Originally Posted by PAPE View Post
Please let me know how many stators?
5 stators

Quote:
Originally Posted by pencon View Post
Determined to hit that 52K are you ?
Not with this rotor.
Although It can be used with the CS 70 rotor, it's intended for high (3kw+) power with other (cut down, 80-90mm ) rotors.
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