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HelicopterScale Model RC Helicopters › Scaler ID And .. Help to set up.
09-03-2003 02:39 AM  14 years agoPost 1
cp8

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Buckeye State

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Would someone please look at these pics and help me ID this kit, mechanics, Rotor head and tail that are used on my BK 117. Compared to another Graupner kit I have it is smaller and less detailed. I was told by the seller that it was A Graupner . Also look it over.. would you fly it As-Is? I have been told that I should upgrade to ball links, new Gyro and replace the main shaft (because of some surface rust) before flying her. How would I know what main shaft to buy? Seems like sound advice. I have an OS .61 to put in it but the Webra is like new not even broken in that is in it. Will the Webra be good enough for scale flying? Is this thing too ancient to use?




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09-03-2003 04:53 AM  14 years agoPost 2
DStJohn

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Ft. Collins, CO

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Schluter!

That is a Schluter BK-117 with either Champion or Scout mechanics. I would look at upgrading the gyro just cuz. I have the same model with Champ mechanics and a Webra 61. It flies great. As for the surface rust, I would try to take it off with real fine sandpaper or crocus cloth and not replace the shaft. The Champ and Scout are old birds, but you can still find parts.

Dan St.John
East Coast Scale Helicopters Vario Field Rep

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09-03-2003 12:56 PM  14 years agoPost 3
cp8

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Buckeye State

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Rotor Head

Thanks. Any Pics of your ship around? Are the Rotor Head and Tail gear box Champion Too? They have Graupner links on them.

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09-03-2003 08:06 PM  14 years agoPost 4
DenisS

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england

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I have exactly the same model. It is Champion mechanics and Schluter 4 blade head. Should have a 40 degree gearbox at the bend in the tail. I converted mine to electronic CCPM, using three servos set up at 90 degrees to control the swashplate. Flew it last weekend at the LHC Cup in UK. With that head on it flies really well. Mine has a Super Tigre 61 in that I run on 10% nitro. Loads of power. I have a picture in my gallery but if you want more I could e-mail you some to show you the layout inside.
DenisS

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09-03-2003 08:56 PM  14 years agoPost 5
89X-CELL60

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Queen Creek, AZ

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My $.02

Hello CP8,

I noticed that it has a Magna "U" Pipe, the Webras' love that pipe. You should have no problem with power. If you find it flies for a quarter to half a tank then goes rich on you, the pipe is probably gone. Also check it for rattles. I just took a pipe wrench and squeezed lightly 3 to 4 inches above the exhaust exit and it stopped the rattle and lasted another 2 to 3 years.

Good luck, looks like a winner

David

P.S. Use a "Rate" gyro on that tail to be on the safe side

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09-04-2003 02:06 AM  14 years agoPost 6
cp8

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Buckeye State

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Thanks for the replies all. OK "DennisS" you have me stumped. Which is the real BK? In your gallery it says Ted Schoonard has or had this ship? Is yours the same one? I don't see the scale interior in it. Mine came from friend and student of his. Maybe built by the same person? I am not sure who buit mine but it has a wonderfully detailed paint scheme. Not as nice as yours but very precise and neat.

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09-08-2003 08:41 PM  14 years agoPost 7
DenisS

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england

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cp8
the real BK is the one flying with the city in the background. My model is flying with trees behind it facing to the left. Mine is not Tim Schoonards model, but many thanks for asking. I don't know if Tim would be displeased at reading that as mine is not a patch on his.
I have put some pictures in my gallery of the setup of the BK117, using a Futaba ZHP WCII transmitter. The standard assignments for the controls are :- 1- aileron, 2 -Elevator, 3-throttle, 4-rudder, 5-gyro, 6-collective pitch. If you have a Futaba radio capable of this setup then use swashplate type S-4, even though you only use three servos at 90 degrees. In the pictures the three servos are plugged into- left servo, channel 1, center servo-channel 2, right servo-channel 6. In the radio swashplate menu I have type S-4, +50% ail rate, (-) minus 50% ele rate and +50% pit rate. I have the rotation mode active to minus 6%. The standard ATV's are at 100%. In order to track the blades I have each ball link on the swashplate marked with a different colour, each pushrod marked with the matching colour and each blade marked with the matching colour. To track blades, put a black dot or stripe at the end of the first blade, then a stripe 1/2 inch in from the end on the second blade, then a stripe 1 inch in from the end on the third blade and, yes, you guessed, 1& 1/2 in from the end on the fourth. This is easier than trying to use a different colour at the same point as they all blend into 1. If you go to my gallery again you can see the pictures, or if you PM your e-mail I will zip them and send them off. I found the setup and spare parts list so I can scan and send those too if you like.
DenisS

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09-08-2003 08:49 PM  14 years agoPost 8
DenisS

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england

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cp8
PS
Just looking at your pictures again, the other thing I've done is to put on a concentric swashplate. I.E. the balls are in line horizontally. This takes out any interaction from the upper balls on your swashplate moving forwards and backwards.

PPS
I didn't realize how complicated it is until I read my post through to see if it makes sense
Any questions, please get in touch.
DenisS

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09-09-2003 03:03 AM  14 years agoPost 9
cp8

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Buckeye State

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I'm getting it.

Thanks Denis, Yep, looks like we both do have the same kits, I bet Schoonards is abigger ship because I don't see how you could get a cockpit in one of these with the mechs.the way they are. I've studied your pictures and instructions. Thanks a bunch for the time and effort. It definately gives me some direction. The tracking data is invaluable for me at this stage. I plan to dial it in with a standard mix swash (single servo) before I get into any other setup though head towards CCPM eventually. As for the lights, there is one free plug on my system with a blue'red wire into it. Could this be for the 9 volt cell as I still have not gotten the strobes to work. Maybe I'll try it .. but I'd hate to fry the board.

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09-09-2003 09:47 AM  14 years agoPost 10
DenisS

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england

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Do a search for McDaniel, either on Runryder or the internet. They may still be around or you may get instructions. I will ask my flying buddy, he's been around so long he helped Leonardo develope his helicopter. he'll know for sure.
denisS

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