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Aerobatic FAI F3C Contest > raptor 90 fuse
 
 
RCHelicopterGuy
Senior Heliman
Location: Michigan

Think you can take a couple pics along the way and show us?
03-15-2008 03:13 AM
 
 
donthomas
Senior Heliman
Location: gibsonville, nc usa

I'll try to get some tommorrow. Going to a swap meet in the morning. Be back on it tommorrow afternoon.

Don Thomas
03-15-2008 03:20 AM
 
 
donthomas
Senior Heliman
Location: gibsonville, nc usa

Here are some pictures of the Blackshark build. Shows some of the required cutting which is not alot. The only obstacle I can see so far is pitch tray clearence and I don't think it will be to much of an issue.



Don Thomas
03-16-2008 01:29 AM
 
 
RCHelicopterGuy
Senior Heliman
Location: Michigan

Don,

If I remember correctly, Colin told me that he had to do some slight modification to his machine, but I don't remember exactly what it was. The good thing is, your'e not trying to get a 3D pitch range out of the machine, so your troubles should be minimal.

You might want to send him a PM for more details.

Looks pretty good so far!
03-16-2008 01:34 AM
 
 
donthomas
Senior Heliman
Location: gibsonville, nc usa

I will. Thanks

Don Thomas
03-16-2008 01:38 AM
 
 
ErichF
Key Veteran
Location: Odessa, FL 33556 (Tampa Area)

Thanks much for the pics...

Am I seeing that correctly? You have to remove the head to get the front off, and access to the mechanics?

Keep us posted
03-16-2008 01:38 AM
 
 
Lee O'Dell
Heliman
Location: Pleasant Garden, North Carolina

That would suck if you had to remove the head to get to the mechanics, especially those who need to dial the hub to the main shaft... i.e. Caliber pre - '06 version.

btw it really looks great






.......so easy a caveman can do it.
03-16-2008 01:43 AM
HOMEPAGE  
 
 
donthomas
Senior Heliman
Location: gibsonville, nc usa

That's right. I don't see any way around it unless you cut the top behind the mainshaft and build a removable cover plate for the cut. I don't think it would be a major operation.



Don Thomas
03-16-2008 01:58 AM
 
 
RCHelicopterGuy
Senior Heliman
Location: Michigan

I would think that you could take a razor saw, make two cuts from the main rotor cutout to the back of that cover (use the top edge of the cover as your guide), and then CA a couple balsa or light ply ledges to the main part of the cover for the plate to sit on again. Make the ledges low enough that you could put a couple of rare earth magnets (available at Radio Shack) on the ledge and the canopy plate to hold them together, and it should hold pretty well.

Just a thought...
03-16-2008 02:07 AM
 
 
Lee O'Dell
Heliman
Location: Pleasant Garden, North Carolina

It may be a non issue for you, considering the Raptors reliability record. You may have less frequent trips under the hood with that machine anyway.

I saw a pic of a Black Shark on one of the Japanese sites recently that had a slit on the back, I will see if I can find it again. It may be a fix for you.






.......so easy a caveman can do it.
03-16-2008 02:10 AM
HOMEPAGE  
 
 
RCHelicopterGuy
Senior Heliman
Location: Michigan

Is that a double bass sitting against the corner of your wall?
03-16-2008 02:11 AM
 
 
donthomas
Senior Heliman
Location: gibsonville, nc usa

You've got me thinking now. I'll try to come up with something. I would rather not pull the head to remove the top. Yes that is an Engelhardt bass. I play bluegrass bass and mandolin although I'm between bands right now. Cut into my heli time to much.

Don Thomas
03-16-2008 02:22 AM
 
 
rhazbun
Heliman
Location: Miami, FL

If you cut the top you have to add some support. With the Xspec the standard mounting bolts for the canopy work great. They also secure the top from coming off in flight.

03-16-2008 02:59 AM
 
 
ErichF
Key Veteran
Location: Odessa, FL 33556 (Tampa Area)

Richard,

That doesn't looks too bad. You got more pics of your bird, specifically the tail?

The Caliber has a pull/pull tail rotor setup, and I need to somehow verify how that would fit. Below is a pic of my C90's tail box:

03-16-2008 04:09 AM
 
 
rhazbun
Heliman
Location: Miami, FL

Here is the completed machine. I didn't get a chance to take better pictures. The day I took it to the field to finish setting it up, I sold it. I only got to fly the class II schedule one time with it. I funded my Eagle 3 project with that sale.

The tail fit just perfect. I had to shave a little off the back of the fuse. I used a 5mm carbon pushrod with only one guide. The machine is a standard xpec with a TT drive onthe tail. The boom supports are in the machine for added support. The place where the boom exits is solid balsa carved to the shape of the boom. The 4 cell Li-ion battery was mounted at the very front of the nose to get it to balance with out additional wieght.


Only thing I would do different is not paint it. I will use stick on graphics over the white gel coat next time. This machine weighed in at just over 12lbs. The fuse with the paint weighed in a a 1lb 4oz.

03-16-2008 05:27 AM
 
 
S Bell
Senior Heliman
Location: Nova Scotia Canada

http://rccanada.ca/bb/viewtopic.php...c847103c90592f0

Nice looking machine, the orange shows up great.Who makes the fuse?

Here's some more information.

Raptors are everywhere
03-16-2008 12:03 PM
HOMEPAGE  
 
 
rhazbun
Heliman
Location: Miami, FL

It is the fuse from QWW. I believe it is a copy of the original blackshark. I had decided on the orange and yellow scheme for visibility only. Thanks
03-16-2008 01:55 PM
 
 
donthomas
Senior Heliman
Location: gibsonville, nc usa

Thanks, Those pictures help alot.

Don Thomas
03-16-2008 02:13 PM
 
 
Wayne Mann
Senior Heliman
Location: United States of America

Hi Don,

Can you measure the inside diameter of the fuse at the back where the boom exits the body. If Erich can find out how big the opening is in milimeters he can better determine whether or not a Calbier 90 tail boom and tail box will fit inside the body.

My FunTech StaySee bodies are not round at the back of the boom where the tail boom exits. The sides of the body are straight and the body goes straight across on the bottom to make room for the push pull push rods to exit and hook up to the bell crank. The StaySee body's opening at the bottom is 44 mm across. You would have to have a minumum of 42 mm for the push rods to clear.

On a side note I have installed the Caliber in a Triumph body from Miniature Aircraft before and I had to make some funky (that is a technicial term) bends in some custom made pushrods to get the Caliber's tail box to work. Something to keep in mind Erich. In the end though the body was so tail heavy there was no way to make it fly right and keep it under the weight limit. The X-Cell mechanics that I flew in those bodies many moons ago were a lot lighter.

Don give me a call when you get ready to fly this thing and I will ride the bike out to the field.


Wayne Mann
03-17-2008 05:41 AM
 
 
donthomas
Senior Heliman
Location: gibsonville, nc usa

Wayne, The opening is 1.5" where the boom exits the fuse. It is pretty much round. I've been planning on giving you a call, just letting you enjoy some off time. I know how it is to have to take your job home with you. I should be ready in a few days.

Don Thomas
03-17-2008 12:13 PM
 
 
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Aerobatic FAI F3C Contest > raptor 90 fuse
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