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Old Oct 09, 2012, 02:19 AM
"Auntie Samantha"
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USA, MO, Clever
Joined Dec 2009
4,734 Posts
Quote:
Originally Posted by raybaines View Post
Gary,
I have a set of 4713-16 16D 18.6" blades and a further set of 422-16 16D 16.6" blades.
Perhaps I will have to follow your lead and order the 17.2" blades to cover all bases !!

Ray.
Here the correspondence I had with Christian back in Feb.

Dear Mr. Gary,
thank you for contacting and interest in our
varioPROP propellersystem.
For your P-51 I would suggest the following parts:

1x 4-blade propellerhub, size "16D"
with 12mm hole for threaded motor shaft. Part-No.: 41216

1x Steel Collet Cuck, long size "16D"
for a smooth 10mm motor shaft. Part-No.: 1610
Note: When using this cuck you
can mount the back plate
of a spinner behind the
hub.

4x 16,6"- Propellerblade, type -HS- size "16D"
for 422mm prop-diameter and
max. RPM 9.000 1/min Part-No.: 422-16

Or Alternative:

4x 17,2"- Propellerblade, type -D- size "16D"
for 437mm prop-diameter and
max. RPM 9.500 1/min Part-No.: 437-16

Note:
When you turn this 4-blade, 16.6" and a adjusted pitch of 14"
with about 5000 1/min you would get a static trust of 40N (~4kg)
by a needed power of ca. 950W. On 5S-LiPo this meand a current of
53A. The 17,2" would deliver a little more static trust, by a need
of the same Amps.


Gary
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Old Oct 09, 2012, 02:20 AM
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eroeder's Avatar
United States, TX, Frisco
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Ray,
Where did you order your prop?
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Old Oct 09, 2012, 02:32 AM
Captain Kangaroo
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Australia, QLD, Headington Hill
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U.S. agent :
e-flightline.com

Ray.
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Old Oct 09, 2012, 02:40 AM
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eroeder's Avatar
United States, TX, Frisco
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Quote:
Originally Posted by raybaines View Post
U.S. agent :
e-flightline.com

Ray.
Yikes! They are out of business. Hmmm, where now?
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Old Oct 09, 2012, 02:53 AM
Captain Kangaroo
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Australia, QLD, Headington Hill
Joined May 2009
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Sorry did not know that.
Perhaps Gary can help us out.

Ray.
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Old Oct 09, 2012, 02:56 AM
Fly & Have Fun..Enjoy the Ride
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Joined Mar 2009
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There aren't any other U.S. dealers I could find that carry anything over the 8B hub sizes...But on the links page on thier main page there are several Overseas possibilities available

http://www.ramoser.de/home_e/variopr...rioprop_e.html
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Old Oct 09, 2012, 03:04 AM
Captain Kangaroo
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Australia, QLD, Headington Hill
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Thank you !!

Ray.
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Old Oct 09, 2012, 03:08 AM
"Auntie Samantha"
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USA, MO, Clever
Joined Dec 2009
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Quote:
Originally Posted by raybaines View Post
U.S. agent :
e-flightline.com

Ray.
Quote:
Originally Posted by eroeder View Post
Yikes! They are out of business. Hmmm, where now?
Quote:
Originally Posted by raybaines View Post
Sorry did not know that.
Perhaps Gary can help us out.

Ray.
It does look like Mike and Jeff e-fllightline went out of business! Looks like Ramoser it is! They're located in Germany, and I've ordered direct from them on several occasions. Christian is a great guy and will answer any of your questions. Christian info@ramoser.de

Gary
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Old Oct 09, 2012, 04:23 AM
Ldm
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United States, PA, Conestoga
Joined Jun 2006
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+1 To Garys comments I look into the system for the LX P40 , they were great .
I could not use it for my application because my Prop was too thick for what they could offer .That will not be the case with the 1700 size FMS planes
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Old Oct 09, 2012, 07:10 AM
Gentle 'Bella'
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Augusta, KS USA
Joined Dec 2007
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Quote:
Originally Posted by brandonmoon View Post
This is the little culprit along with the other variables we's all mentioned that is causeing the prop and hub failures and these catastrophic failures I've been talking about. It's basicaly the same setup on the P-47 and the F4U Corsair
For sure that could set up the failure. Wasn't that contact discernible during assembly by just rotating the prop through? I'd want to see images of a freshly assembled example to see just how it sits prior to running. I'd hope there is enough ventilation through the cowl and out the back of the plane to eliminate pressure within.

Still, better to find the prop weakness at this stage rather than down the road at the cost of what could be worse consequences.

Btw, Aros, it is truly a remarkable looking Corsair, even presents itself like the full scale while flying, really a satisfying offering from FMS in that regard. I know this has all been sort of traumatic and you follow through with clarity. Thanks.
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Old Oct 09, 2012, 07:48 AM
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United States, DE, Dover
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Quote:
Originally Posted by gnats82 View Post
Still, better to find the prop weakness at this stage rather than down the road at the cost of what could be worse consequences.

Btw, Aros, it is truly a remarkable looking Corsair, even presents itself like the full scale while flying, really a satisfying offering from FMS in that regard. I know this has all been sort of traumatic and you follow through with clarity. Thanks.
I agree, especially for the newbie who likes to full throttle static test his or her models at home or on the bench and you know one of you watching these threads do.... yikes... and ouch just the sound of the pop makes my stomach turn and if this happens in someone's basement ....
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Old Oct 09, 2012, 12:01 PM
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The Netherlands, LI, Gennep
Joined Feb 2011
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Quote:
Originally Posted by Smoothcruizer3 View Post
I agree, especially for the newbie who likes to full throttle static test his or her models at home or on the bench and you know one of you watching these threads do.... yikes... and ouch just the sound of the pop makes my stomach turn and if this happens in someone's basement ....
I was one of those full throttle static test guys hahahaha...
One blade seperated during static test, the plane was jumping around in the room, eating the cowl and the floor. I still have a scar in my face from the blade.
Since then, I don't thrust these hubs and blades anymore.
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Old Oct 09, 2012, 12:09 PM
Experienced but not an Expert
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United States, WA, Enumclaw
Joined May 2011
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Quote:
Originally Posted by Smoothcruizer3 View Post
I agree, especially for the newbie who likes to full throttle static test his or her models at home or on the bench and you know one of you watching these threads do.... yikes... and ouch just the sound of the pop makes my stomach turn and if this happens in someone's basement ....
And I might be the newbie your referring to.

I'm lucky I didn't burn up my Starmax Gunfighter when I did my full throttle static test. I filed that under 'I'll Never Do That Again' experience.

But I'm sure we have all done stupid things until we learned better.

It's when we DON'T learn from our mistakes that's a problem.
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Old Oct 09, 2012, 12:56 PM
Shameful Warbirdaholic.
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Maple Valley, WA
Joined Apr 2006
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Hell, I do stupid things daily!
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Old Oct 09, 2012, 12:56 PM
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Canada, BC, Port Coquitlam
Joined Apr 2012
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Sorry to hear of your Corsair incident. Do you think this can be a "warranty" claim? The 1700 Corsair is so new and bugs still need to be worked out.

The cause could have been a weak prop hub, weak prop blades or a cowling clearance problem...or a combination of the three.

Gorgeous model...nice flying....will be perfect for our little project, eh?
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