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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › Re production Cheyenne fuse build
03-25-2020 06:14 PM  8 days ago
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v22chap

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Granger, Indiana

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Re production Cheyenne fuse build
This is what I am keeping busy with during the pandemic .
It is a "Randall " reproduction of the Schluter Cheyenne helicopter . I am putting in modern 600 trex mechanics and going to have a working pusher prop. I actually have that working .. didn't want to start posting about this one until I had that working right .Although I do need to redo it as the first one is pretty rough and a little on the wobbly side due to a mistake in lathe work . It is a lot of fun to push the collective forward on the pusher in a hover and notice the tail drop a little as you try to hold it in a hover . Once you let it loose it climbs into the air without dropping the nose like it would normally to do FF and this is all on a test bed without the aid of the stub wings that will be on the full fuse .It also is with plain tail rotor props on the pusher and not any airplane props ,,,, yet
Enjoy the build and hopefully some flying pictures soon .

Larry C ----------Bergen R/C helicopters
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03-25-2020 10:20 PM  8 days ago
Heli143

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Phenix City, Alabama

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Very cool!!!
Following this one closely 😎
Roy Mayoral
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03-26-2020 12:42 AM  8 days ago
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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Nice work Larry! i knew you werent a regular guy all these years chatting under the scale tent at IRCHA hope to see you there, if in fact ircha happens.drive a rotary, fly a rotorcraft
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03-26-2020 12:46 AM  8 days ago
v22chap

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Granger, Indiana

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Thanks Emile ,,, yep I am a scale junky. ,, just been to busy with life the last few yrs to build much, let alone fly much . Hope to see ya again at IRCHA ,,, fingers crossed Larry C ----------Bergen R/C helicopters
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03-26-2020 03:57 PM  7 days ago
cobieg

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Florida

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Very cool. Would like to see the inner workings of that gearbox.

Ron
I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!
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03-26-2020 04:21 PM  7 days ago
v22chap

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Granger, Indiana

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Sure . It is just a mod of a 1/8 th aluminum truck axle and 2 - trex 600 tail rotor gear box mounts with 4 home made "L" brackets drilled and tapped to make a mount for all of it and trying to keep it all small so as to fit into the already really small original thin tail boom ... and even at that I am going to have to do some mod to the boom as I just couldn't get it down to original 1 - 3/4 " . It is 1- 7/8 inches top push rod to bottom pushrod and 2 inches wide So much for exact scale .. but this is just a fun scale bird .. I don't compete anymore ,other than some small town static scale contests . Just to old for the nerves to take it anymore !!

Larry C ----------Bergen R/C helicopters
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03-26-2020 04:35 PM  7 days ago
v22chap

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Granger, Indiana

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The gears are Scaleflying.de steel gears for their 600 and fit perfectly in the trex 600 tail gear bearings .https://scaleflying.de/product_info...gelrad-20t.html
The trex 600 is the older 600 upgrade kit with a drop down gear box , torque tube drive from roban models and I ended up having to get steel gears for those gears as the extra torque of the pusher stripped out the plastic ones in about 8 flights ,, especially when I started pushing the pusher prop into push mode and holding it in a up nose hover !

Larry C ----------Bergen R/C helicopters
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03-26-2020 04:51 PM  7 days ago
v22chap

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Granger, Indiana

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Had to make control arm mount and change the arm degree location to get 90 degrees to push rod

Had to do the same for the tail rotor control mount ,, wasted a tail rotor side frame for the mount bracket stub

Larry C ----------Bergen R/C helicopters
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03-26-2020 08:44 PM  7 days ago
v22chap

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Granger, Indiana

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Didn't like the nose of the original schluter one ,, soooooo

Notice book picture of right nose pod .

So out comes the saw !!!

As Emile says ,, and a trip to Wally world for ping pong balls ... just the right size and bottom shape .

Little hard wood on a make shift drill lathe and gun turret like picture

Hardwood , washers and stainless steel tube from McMaster Carr and mini gun .

Sub micro servo for control

mounted to pod back and ready for final paint
Larry C ----------Bergen R/C helicopters
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03-29-2020 11:11 PM  4 days ago
v22chap

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Granger, Indiana

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Got the turret pan servo /control cables installed

you can just barely see the eye hook and cable soldered to it on the turret back ... does present a problem in getting the mini -gun and back installed ,, I need a midget to crawl back in there and put it in place and put in the mounting screws

main wing location is wrong on the Schluter fuse ..... Somethings I won't change as it just takes to much effort ,, but this has to be ,, so out comes the saw and poooff , main spar gone

I did balsa /ply built up wings and am doing the old thin fiberglass covering trick to seal balsa and make them strong . Don't know if they still do this in the plane world,, been 35 yrs or so since I had an airplane :crapper:
Larry C ----------Bergen R/C helicopters
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03-30-2020 12:20 AM  4 days ago
BeltFedBrowning

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Kansas City

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What resin did you use on the fiberglass?
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03-30-2020 03:23 AM  3 days ago
v22chap

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Granger, Indiana

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Just regular Bondo brand fiberglass repair resin and hardner that I ordered of Amazon since we are to stay home . I put a heavy coat on and lay pre cut to a little oversize .75 oz glass into it and smooth it out with the brush and gloved fingers / let it dry and sand cut the edges of the fiberglass that hang off the wing and then do the other side . You can then light sand and use filling primer to finish it off smooth . Some times I will put another light coat of resin ( thinned with denatured alcohol ) on it ,,but most of the time only one coat .Larry C ----------Bergen R/C helicopters
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03-30-2020 04:56 AM  3 days ago
andre

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France

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Hi Larry
Finaly you started this project .
It brings me to mine that I made 9 years ago !
Time is runing too quick.
Good luck with it
Andre
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03-30-2020 01:14 PM  3 days ago
v22chap

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Granger, Indiana

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Thanks Andre ,,, yes time flies when you are having fun !!!!! The V-22 tilt rotor took up more time than I had ever planned !!Larry C ----------Bergen R/C helicopters
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03-30-2020 02:22 PM  3 days ago
bwellmaker

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Long Island

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UIH,

Great project Larry. I considered making the Cheyenne years ago but being a Sikorsky guy figured I would keep the faith.

Keep up the great work. Look forward to seeing this one day.

B
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03-30-2020 02:29 PM  3 days ago
v22chap

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Granger, Indiana

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Thanks Butch ... yep ,, got to stay "true blue " to the company ! Besides the Sikorsky is a hardly ever modeled bird ,, the cheyenne has been done before by several guys ,,, Schluter the first then Jim Rayan (450 size )a cute scratch built one ,many with the orginal Schluter one ,, and Gunthor in Germany just last yr with a beautiful scratch built and I have probably missed some inbetween
Also looking forward to seeing your 67 some day soon !!!
Larry C ----------Bergen R/C helicopters
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03-31-2020 08:49 PM  2 days ago
v22chap

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Granger, Indiana

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Working on tail feathers , can't build balsa feathers so had to do aluminum ribs with PETG skins ... wish I had a vacuum former ... guess I should take time and build one .

Pretty much ready for paint ,, just need to make outer rib to fill in end by tail rotor .
Larry C ----------Bergen R/C helicopters
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03-31-2020 08:54 PM  2 days ago
v22chap

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Granger, Indiana

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The right side I could use normal structure ,but to match other side I covered it with the PETG skin .

Larry C ----------Bergen R/C helicopters
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04-01-2020 06:58 PM  1 day ago
v22chap

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Granger, Indiana

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Main wings done and mounted . 1 3/8 aluminum tube to hold in place and one 3 mm bolt 3/4 of the way back on airfoil to hold it in .

These are 26 " wide--- chord is 9" at root and 5.25 " at tip ... these should provide some pretty good lift
Image

Larry C ----------Bergen R/C helicopters
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04-02-2020 04:32 PM  9 hours ago
v22chap

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Granger, Indiana

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This I type of building I am showing here today ,, well I call it what it is ,, some old time scale building done by a old fart on a fixed budget doing it on the cheap And at 73 yrs young I don't feel like learning sketch or any other cad program to do 3- D printing or do i have the money to invest in a printer . Although I am tempted

Here is another favorite trick that Emile taught me some where in the past following his builds :beer:
The Schluter kit leaves a lot to the imagination and I probably should have done what Gunther did and scratch built one ... but this is neat too as it is an original copy of the fuse .
The air intakes kind of just stop ,, and needs to be extended and seperated from the fuse . What I have done is still not true scale but is a compromise without doing a lot of cutting and redoing fiberglass ,, which I hate to do .

BUILDING Material ----- Card board from Bondo package

Thickness is really small --- .55 mm

Bend by hand / small needle nose pliers cut and bend for tappered folds and hold shapes with thin CA wicked into card board

Trying to duplicate is some what of a problem though if you need two close together ,, use thick CA to build up lips .. on hind sight wish I had used another of my favorite materials ... Devcon 5 min epoxy gel to do the built up lips as it forms into a design easily and doesn't sand as hard nor have the bad smell as CA when you power sand it with a dremel .

1/8 ply backing and mount bracket

right side done

Right side taped in place ,, need finish paint yet .

Enjoy
Larry C ----------Bergen R/C helicopters
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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › Re production Cheyenne fuse build
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