WattFlyer RC Electric Flight Forums - Discuss radio control eflight

WattFlyer RC Electric Flight Forums - Discuss radio control eflight (http://www.Wattflyer.com/forums/index.php)
-   Power Systems (http://www.Wattflyer.com/forums/forumdisplay.php?f=17)
-   -   Kontronik Pyro Motor question (http://www.Wattflyer.com/forums/showthread.php?t=73887)

kyleservicetech 06-13-2014 04:49 AM

Kontronik Pyro Motor question
 
Just got an email from Espritmodel.com for their $$$$ Kontronik motors. This one has only an 8 mm shaft for a 10KW motor. The motor only has 14 poles. Just can't visualize a 28 inch diameter prop on that size shaft.

Am I correct in assuming these motors are designated for helicopter use?

http://www.espritmodel.com/kontronik...ong-shaft.aspx

JetPlaneFlyer 06-13-2014 07:33 AM

Yes, that's a heli specific motor. The shaft is long because it's designed to be supported at the end by a bearing that is mounted in the frame of the heli, so it doesn't have to put up with the bending moments that you get with a prop. I have a similar spec motor in my 700 size heli.

Heli motors are also higher Kv than similar power fixed wing motors. The one you linked is for 12-14s and has 480Kv, so up to around 25,000RPM... far too high for a direct drive prop that's big enough to take that sort of power.

You could use such a motor in fixed wing with a reduction gearbox.

ron_van_sommeren 06-13-2014 02:46 PM

Kontronik lists them as 5kW continuous power Denny
Kontronik - Pyro 800 series

And if you really want $$$$ :D
Kontronik - Pyro competion series


http://www.kontronik.com/images/stor...ide_web_gr.jpg

ron_van_sommeren 06-13-2014 04:25 PM

I take it this is not you Denny? First post, and you already had your anser from Nigel
www.rcgroups.com/forums/showthread.php?t=2185474

Prettig weekend ;) Ron

kyleservicetech 06-13-2014 05:06 PM

Quote:

Originally Posted by ron_van_sommeren (Post 950426)
I take it this is not you Denny? First post, and 'you' already had your anser from Nigel
www.rcgroups.com/forums/showthread.php?t=2185474

Prettig weekend ;) Ron

Hi Ron

NO THAT IS NOT ME!

Looks like this guy copied my question and pasted it into his own thread in this web page.

Very strange.

Question, should I notify RCGroups on this issue, and if so, how?

ron_van_sommeren 06-13-2014 05:13 PM

To be honest Denny, I had already reported that post before asking you about it here. Within 10minutes it was moved to the RCG bitbucket.
It's not the first first post, copy/paste message I reported. Annoying.

Why they do it, I don't know.

kyleservicetech 06-13-2014 05:18 PM

Quote:

Originally Posted by ron_van_sommeren (Post 950431)
To be honest Denny, I had already reported that post before asking you here. Within 10minutes it was moved to the RCG bitbucket.
It's not the first first post copy/paste message I reported.

Why they do it, I don't know.

Hi Ron

Thanks for the tip. At least the guy could have slightly reworded my question :confused: :cool:

hayofstacks 06-13-2014 05:37 PM

Denny, at 10kw, you might as well just pony up for one of the ford ranger ev motors made by simons and hook it up to your car ;).


All times are GMT +1. The time now is 12:14 AM.

Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Page generated in 0.08286 seconds with 13 queries