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Old May 20, 2013, 10:13 PM
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therealthing691's Avatar
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servocity or servolink.com
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Old May 22, 2013, 11:17 PM
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Joined May 2011
691 Posts
One suggestion for permanent solving of Kinkade's intermediate gear set screw problem:
1. Use set screw with conical tip and choose the length of the screw so: that when it tighten to do not sticking out of the gear hub.
2. Find some aluminum bushing with inside diameter slightly smaller ( about -0.01 mm) then the gear's hub - outside diameter and the same length as the hub. Outside diameter of the bushing isn't critical but in order to keep the added weight low 1 mm of the bushing wall thickness is enough.
3. Mount the pinion wire in the gear, tighten the set screw and PRESS fit the aluminum bushing over the gear hub.
4. The result will be even better if you use one or two more set screws placed respectively on 180 or 120 degree on the hub.

I am sure , one of the most weak points in Kinkade's design will be forgotten that way.

Success
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Old May 25, 2013, 10:58 AM
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n553302's Avatar
Northwestern Illinois
Joined Jan 2003
189 Posts
Quote:
Originally Posted by Wid View Post
The set screw seems secure. I'll watch it carefully.

I do have an audible gear noise since I bought the bird, a kind of chirping sound, due to the extra power needed during down stroke I imagine. There is some wear showing on the gears but certainly not excessive. I have wondered about lash and just sort of guessed at it. Just loose enough to turn freely, Tight enough to not be sloppy.

I fly enough that I expect to eventually need to replace parts. Where did you get your replacement gear? If it is a Lazy Hawk gear what are it's specifications? I wish there were an exploded diagram with part names and specs. I fly often and plan to maintain the bird for a long time.

Thanks for your help. I was able to fly today because of it.

Actually a little chirping noise is normal. It's difficult to make a description of a noise using words. The noise made from the gear with the out of center hole was beyond a chirp, bordering on a grind.
“Just loose enough to turn freely, tight enough not to be sloppy.” Sounds about right.
Have luck
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Old Jun 05, 2013, 10:57 PM
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Ft Lauderdale, FL.
Joined Jan 2007
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Does anyone know where to get the "Plastic skid protector" material ??(which is what it is called in my Sunbird assembly manual)
My second Sunbird is missing this part...
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Old Jun 05, 2013, 11:16 PM
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australia
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2,148 Posts
bunnings hardware in australia i would say something like that in the USA
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Old Jun 06, 2013, 04:29 PM
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n553302's Avatar
Northwestern Illinois
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Originally Posted by Machy2k View Post
Does anyone know where to get the "Plastic skid protector" material ??(which is what it is called in my Sunbird assembly manual)
My second Sunbird is missing this part...

People have used silicon fuel tubing slit open and zip tied on. I would imagine a small diameter poly tube could be used in the same manner. If landing in grass a skid isn't a necessity.
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Old Jun 06, 2013, 04:36 PM
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Thanks for the info. guys, I will fashion something for the skid no need to spend big bucks lol...
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Old Feb 01, 2014, 08:40 PM
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FL
Joined Jul 1999
473 Posts
O rings

Does anyone have a source for the 4 (2 different sizes) of O rings used to secure the tail?

Thanks
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Old Feb 01, 2014, 10:43 PM
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Canada, BC, Madeira Park
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ebay store
http://stores.ebay.ca/ZFE-STORE/_i.h..._sid=987285486
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Old Feb 02, 2014, 01:07 AM
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Northwestern Illinois
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Quote:
Originally Posted by testfly View Post
Does anyone have a source for the 4 (2 different sizes) of O rings used to secure the tail?

Thanks
Hi Troy
Grainger has a large selection of O rings. They come in many different compounds. If you are given a choice DON'T buy rings made of Viton. Good for UV, this is why I bought them but they are too hard, not stretchy.
Rick
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Old Feb 21, 2014, 10:47 AM
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United States, GA, Valdosta
Joined May 1999
70 Posts
Body skid

If you have a access to a machine/wood working shop that uses bandsaw blades. The body skid is the blade teeth protector that comes on some brands of band saw blades & is thrown away when the blade is installed.
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Old Mar 25, 2014, 12:34 AM
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United States, CA, Morongo Valley
Joined Apr 2010
54 Posts
Best thing for bottom skid is automotive door edge guards. Do a search for Cowles Products T3800 U-Shape Clear. Self adhesive and provides a shock absorber for those asphault landings.
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Old Mar 25, 2014, 08:30 AM
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Joined Nov 2007
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Still looking for a replacement frame for my Park Hawk
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Old Mar 27, 2014, 08:15 PM
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australia
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i would send Mrs thopter a PM maybe she has one for sale regards Brian
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