Raptor 60 Construction Questions

[ntwaddell]

I was just wondering what the fuel nipple on the bottom of the fuel tank is for?

[capebob]

I've never seen it used. Just use a short piece of fuel tubing and the provided plug to cap it off.

Bob

[ntwaddell]

interesting. so question #2, on the one way bearing. it says i need one way bearning grease. the hobby store says they dont have any, helikraft is out. is there anything else I can use?

[capebob]

I use Triflow oil. It's a light machine oil with suspended Teflon. You can get it at bicycle shops. I've never used the TT grease, but other greases I've used on TT one ways have been unsatisfactory.

Bob

[Laurens]

I have used triflow grease and it didn't work at all. I didn't try the oil though.

[ntwaddell]

how often do you have to regrease the bearing?

[ntwaddell]

the throttle arm on my carb is hitting the frame. has anyone else had this problem?

http://www.nicktwaddell.com/upload/raptor01.jpg

[ferincr]

I think these links might help you.
http://www.raptortechnique.com/throttle.htm
http://www.raptortechnique.com/raptor60construction.htm
I also remember seeing in another place about throttle geometry settings but I can't find it now.

[ntwaddell]

thanks for the links

[ferincr]

There's lots of good info in that page if you go to the main page there is a menu on the left side

[ntwaddell]

Ok I am stumped on my rudder linkage..

it runs through the holes in the frame, which make it rigid so the linkage just goes forward and backwards..

this is all the way back
http://www.nicktwaddell.com/upload/raptor02.jpg

this is all the way forward
http://www.nicktwaddell.com/upload/raptor03.jpg

first my servo arm is not even long enough to reach all the way back without bending it. is the rod supposed to bend when it travels? Can someone maybe point me in the right direction and maybe post some pics of how it should be?

[Wa11banger]

First Question:
I use the bottom nipple to fill my tanks so I dont have to break into the system anywhere to fill up. I put a short piece of tubing onto the lower nipple, loop it back around under the tank and out the back side between the corner edge of the tank and the side frames.. I put the metal plug on it there and fill basically from the back of the skid support.

Question #2
A lot of people use ATF to clean and lube the one way bearing.. I got tired of them having problems and I use QUK one way bearings.. They come prelubed, they are damn near bullet proof and a one time buy that you wont have to fiddle with ever again. On top of that the free spin much better than the stocker.. Not a required upgrade for sure but a nice one to never have to fiddle with again.

Question #3
YOu need to adjust your linkage so that with the TR blades centered the linkage centers above the servo output gear.. This will give you left and right equality.. as for the the alignment. Most just use it like it is, it does flex a little down to attach.. You could always put a bend in it to ensure it is running straight but that is your call. I use CF pushrod tube and mount all my servos on the boom.. But that is another can of worms to discuss on the forum :D

Hope some of that helps
Rick

[Wa11banger]

Whoops forgot about the throttle arm.. I have only had one engine where the throttle arm hit the fan shroud and I cant remember which one.. But you can make an extender or purchase a different throttle arm to change it out.. or if it is minimal contact, dremel the fan shroud slightly there. It will not hurt to cut into that with a small sanding drum a little bit

Rick

[ntwaddell]

first tank... the tail rotor stopped working. well it turns out I did not have the tail boom in all the way. so the drive shaft was not all the way in the coupling. that also gave me more to work with on the tail rotor servo linkage. so all is good, thanks guys!!

[ntwaddell]

hover time! :)

http://www.nicktwaddell.com/gallery/d/2655-2/IMG_1063.JPG

So I don't know if this is normal or not, but when my raptor is on the ground. it feels very tail heavy. Is this normal?

[ferincr]

How is the elev. trim once is hovering?
May be it need a bit of forward trim...

[ntwaddell]

It seems fine once its hovering, its just when Im on the ground spinning the rotor. It just seems like it wants to lean back a bit and get the tail rotor close to the grass. green blade tips!

[ferincr]

Well, if you are not looking forward to change tail gears, you better add some forward elev while spooling up

[ntwaddell]

I flew on the pavement today. Much better! I will be glad when I am confident enough to take off the whiffle balls

[ntwaddell]

ouch!
http://www.nicktwaddell.com/gallery/d/2680-2/IMG_1068.JPG

[Laurens]

Pin was falling out? You're lucky you didn't crash because of that.

[Wa11banger]

That set screw should be on your daily check list.. That is probably one of the most important screws in that machine.

[ntwaddell]

That set screw should be on your daily check list.. That is probably one of the most important screws in that machine.

now i know! I read somewhere that someone recommended to put a 2nd set screw on top of the first one. have you tried this?

[ntwaddell]

Pin was falling out? You're lucky you didn't crash because of that.

yeah it worked its way out and started cutting through the housing :shock: luckily it did not lock up.

[Wa11banger]

I have never heard of putting a second one in but I will list a couple of neat little tricks that other people have thought of over time

-- Grind a flat spot in the pin where the set screw touches it.. This will keep a better contact between the pin and set screw and maybe hold it better..

-- Put a small amount of heat shrink around the gear there where the pin is this will help hold the pin in until you notice your set screw is loose.

-- Keeper rings made by Paul or something P he is the same guy who created the greaser.. Great idea pop on some presized perfect little rings pre manufactured

-- Homemade keeper rings supposedly the stuff Paul or the P something person uses for the keepers is made from some of the thin irrigation tubing that home depot or lowes sells. You might take your gear with you and see what they have to offer.

That should keep you busy for quite a while.. I have never had one come loose on the big birds but I did lose one on the Raptor 50.. I shoot alcohol down the threads and clean the set screw with alcohol before ever using them. Then I get a little more liberal with the blue stuff as there are a lot of threads to go through.. So far so good..

Hope it helps
Rick