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HomeAircraftHelicopterVario Sky Fox - Benzin - Evolution - Xtreme › Clamp Ring Position on Rotor Shaft
01-10-2015 02:46 AM  3 years agoPost 1
Yeager

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Lisbon, Portugal

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On Vario Heli mechanics (1002/21 w. fuselage kit 6030);

I'm looking for confirmation of the correct mounting position of the Clamp Ring (54/9) on the rotor shaft (35/41). On searching internet photos of this model, I've seen other builders mounting the clamp ring just below the swash plate and above the dome plate as opposed to below the dome plate. The way I read the building instruction from Vario - the clamp ring mouting should be below the dome plate?

Could any experienced builder please assist in this confirmation, thanks.

Attached photos of my mounting.

Many thanks,
Claus

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01-10-2015 03:13 AM  3 years agoPost 2
Yeager

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Lisbon, Portugal

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additional pic of clamp ring position in fuselage manual 6030
Sorry one more pic attached to this post of the 6030 (fuselage) build manual, where it, in my understanding, is wrongly mounted above the dome shaft..? Opinions? thanks.
/Claus

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01-10-2015 02:24 PM  3 years agoPost 3
doorman

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Sherwood, Arkansas

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Under The Bearing Block
I own 4 Benzin machines and each of them have the clamp ring under the top bearing block... I have been flying my first since 2004 with no problems... and all but one are now in fuselages...

I also have the 47G3, which looks similar to the mechanics you show. when I get to my shop later today I will take a look to see if it is in a different location then the Benzin's

Hope this will help you out...

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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01-10-2015 02:34 PM  3 years agoPost 4
Yeager

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Lisbon, Portugal

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Stan,

Cheers man, appreciate it! I thought the purpose of the clamp ring would be to secure the whole rotor shaft in place.. Hence be below the the upward forces.

Thx. Await your build experience, thanks a lot.
/Claus

Robbe Nova Cuatro Gas/Nitro, Futura Nova Nitro, Futura SS Nitro, Vario Scale S300C/1002/21 Gas.

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01-10-2015 05:23 PM  3 years agoPost 5
doorman

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Sherwood, Arkansas

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Clamp Ring
No Problem Claus,

I did check my 47G3 and the clamp is under the top bearing plate, just like the others..
I agree that this clamp ring does hold the entire shaft in place along with the thrust bearing being in the proper position..

Good luck with your build..

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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01-11-2015 02:22 AM  3 years agoPost 6
Yeager

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Lisbon, Portugal

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Stan,

Thank you very much for taking time in checking it and replying to me. That's comfortable to know. A bit bizarre that Vario actually published the fuselage build manual with an incorrect depiction of the clamp..
I seem to recall that the Robbe Cuatros (mine are stored in France, so no access to them right now!) had two clamp rings installed.. Anyways. Once again, thanks a lot, Stan.

/Claus

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01-12-2015 01:47 PM  3 years agoPost 7
Notar

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Taxachussetts

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If you are building the 300C, not only does one go below the top bearing block, but also on the top bearing as well, to retain the top bearing in the dome.
Joe

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01-12-2015 03:22 PM  3 years agoPost 8
doorman

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Sherwood, Arkansas

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Makes Sense Now!!
If anyone knows for certain, it is Joe...
Did seem strange that they would show one on the top, and one not go there...containing the bearing certainly is a "good" thing....

So on the 300C there are 2 mast locks..

Thanks for keeping us straight Joe!!!!

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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01-13-2015 08:25 AM  3 years agoPost 9
Yeager

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Lisbon, Portugal

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Joe and Stan,

Thanks a lot. That would then be the one and only component missing in the two kits. No big deal. I'll order the extra clamp ring and mount it on the top bearing as well - which makes sense.

Thanks a lot for the clarification Joe.

/Claus

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01-23-2015 12:26 AM  3 years agoPost 10
Gizmoman

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Ottawa, Canada

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I'm also building the 6030 with the 1002/21 mechanics and just noticed this thread. To toss a wrench in the gears....
There is only one clamp collar provided in the kit and it's positioned below the thrust bearing as shown above on page 6 of the manual. I just took mine apart and confirmed that the top bearing is retained by the dome plate. As already mentioned, pages 7 & 17 show a clamp collar above the dome plate. Unless that clamp collar is dimensionally different from the lower collar, it will not fit without using a sleeve on the main shaft to position the clamp above the cap screws.
Possibly there was a production change?
G

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01-23-2015 01:55 AM  3 years agoPost 11
Yeager

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Lisbon, Portugal

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Gizmoman,

Thanks for your input and for adding the fact that the standard clamp ring actually doesn't fit. I haven't tried it as mine is already mounted as per build instruction. I was considering mounting an "extra" one as per the pictures, however as much as I don't mind added "safety" it is a bit against my nature to just add and add without a particular good reason, and as such I don't really see the point or reason for mounting a clamp ring above the top bearing. Now I do respect the input from the veteran builders, and therefore am considering just doing it anyways.

Cheers,
C.

Robbe Nova Cuatro Gas/Nitro, Futura Nova Nitro, Futura SS Nitro, Vario Scale S300C/1002/21 Gas.

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01-23-2015 02:47 AM  3 years agoPost 12
Notar

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Taxachussetts

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There has been no production change and the standard clamp collar will fit, ask me how i know, LOL.
An easy fix would be to increase the length of 4 of the screws holding the top plate to the dome, but add a small washer under 4 of the screws to overlap the outer edge of the bearing, eliminating the need for the clamp ring. This would ensure the bearing does not "walk" up the main shaft for any reason.
Joe

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01-23-2015 03:21 AM  3 years agoPost 13
Yeager

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Lisbon, Portugal

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Great idea, thanks.

Robbe Nova Cuatro Gas/Nitro, Futura Nova Nitro, Futura SS Nitro, Vario Scale S300C/1002/21 Gas.

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01-23-2015 06:53 PM  3 years agoPost 14
Gizmoman

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Ottawa, Canada

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Here's three photos of the 6030 kit I'm currently building. Pictures should clarify the issue.
The opening in the top plate measures .729" and the bearing OD is .826".
With the top plate in position only the dust shield is visible. The bearing cannot move from its position. The last photo is of the clamp collar.

G

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01-24-2015 12:45 AM  3 years agoPost 15
Yeager

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Lisbon, Portugal

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Gizmoman,

You got it. Thank you very much.

Cheers,
Claus

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