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HelicopterGasser Model RC HelicoptersOther › xcell Gasser Conversion-Original top frame use
05-02-2004 02:27 AM  13 years agoPost 1
DaveThomasPilot

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Apex, NC

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I'm converting my old Xcell to gas. Got the conversion kit from MA including 231 engine.

I mentioned to the tech at Xcell this was going to be a heavey camera ship and he said something about keeping the original top frames for use in the conversion. But know I don't recall the details.

They are the original, "bent" frames.

Specifically, I'm not sure whether I cut the top frames at the bend and use them as a doubler for the carbon fiber or whether to use them INSTEAD of the carbon fiber top frames.

Anybody familiar with how to use the original aluminum top frames to beef up the gasser for camera work?

Thanks,

Dave Thomas

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05-02-2004 02:38 PM  13 years agoPost 2
Gasser

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New Jersey

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Not sure of the reason but MA wants you to use the aluminum upper frame set when you are using your gasser as a camera ship.
Rick

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05-02-2004 08:32 PM  13 years agoPost 3
DaveThomasPilot

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Apex, NC

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Yeah, I saw that here on RR too.

But I don't know if he meant use ONLY the original aluminum top frame, or simply use it as a doubler (in addition to the CF top frame he sent me in the upgrade kit).

I can't use the original as is, since it's the old "bent frame" style. It looks like I could cut it at the bends, though, and maybe use it instead of the CF one. Clearly, I could use it as a doubler to the CF frame, but I might need some longer bolts.

Thanks,


Dave Thomas

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05-03-2004 01:48 AM  13 years agoPost 4
ImRich

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Derry, NH USA

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See my gallery, there are some pictures of a frame reinforcement that works instead of using the aluminum upper frame mounts from MinAir.

I showed them to MinAir and they commented that they should reinforce the proper areas.

Here is one shot of the upper frame you can see the aluminum doubler I added (these were added to both sides):

If you look at the original carbon frame, there is not a lot of 'meat' at the corners of the opening. This small area can break if a lot of stress is placed on the frame. This can happen when carying a heavy load. I can imagine it might fail under extreme 3D also.

I had this area of my frame break after a faulty main bearing caused a lot of vibration and the carbon frames let go. Luckily I was just lifting off and not even hovering yet so there was minimal damage. After my rebuild, I decided to reinforce this area to get ready for my camera ship.


This is a partial view which I took for a different reason, but you can see part of the reinforcment up close.

Here is the left side view:

And now the right side view:

I made two of those plates, one for each side.

It was pretty easy. Just use some longer bolts and you're all set and it's easy to add without taking your heli all apart.

Or you can order aluminum upper frames and do it the MinAir way. It's more money and more work.

Don't forget a metal head block, they recommend that too (they say the whole metal head is not required).

---
Rich

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05-03-2004 08:28 AM  13 years agoPost 5
DaveThomasPilot

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Apex, NC

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Ah, thanks ImRich. It makes sense know.

I think the MinAir rep was suggesting making a frame reinforcement just like your aluminum doubler, but from my old, original aluminum frame. I can just cut a rectangular piece from the frame to make the doubler.

Thanks,

Dave Thomas

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05-03-2004 12:37 PM  13 years agoPost 6
ImRich

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Derry, NH USA

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I had a machinest friend make two sets of these for me.

One set out of aluminum, which I used.

The second set he made out of Titanium! I was going to use these, but he used some titanium that was too thick to install without interfereing with my mechanics. He used some scrap titanium to make the set for me, too bad it was too thick, it certainly wouldn't have added any weight!

---
Rich

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05-07-2004 05:49 PM  13 years agoPost 7
helidogrrApprentice - usa - My Posts: All  Forum  Topic

Its nice to be the Big Dog.

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