Hostetler 113in Super Chipmunk

kwilson

Gold Member
Interesting hinging system. What is the yellow hinge rod made of? Can you possibly explain/show me how it works?
 

Tseres

Whiny Old Man
I'm going to take a break today and work on the Albatros. I will do a detailed photo bomb on the other elevator hinging when I get back to it. The yellow tube is the inside part of Nyrod. It's the Blue and yellow size. the piano wire I'm using for the pin is 1/16 wire. It slides in the inside of the yellow rod.
 

tom wheeler

New Member
Hey Tom, thanks for the dimensions. Ron and I took a short break from building the two JTEC's and pulled out the Chipmunk plans and also looked at some canister dimensions. As you pointed out there is about 6.75" between the motor box sides, depending whether using short canister that are about 3" each in diameter or longer ones that are 2.5" in diameter, I think two side by side will work. Monday I'll look at the plans again and see how much length is available between the exhaust ports and what I think would be the first vertical non movable object, the spar box.

Tom
 

Tseres

Whiny Old Man
Here are some more pictures of the hinging process. May help explain how its done. I can probably answer specific questions. Showed it to my buddy Mike today he liked it. Said he may start doing all his hinges like this.


IMG_6157.JPG IMG_6158.JPG IMG_6159.JPG IMG_6160.JPG IMG_6161.JPG IMG_6162.JPG IMG_6164.JPG IMG_6165.JPG IMG_6172.JPG
 

kwilson

Gold Member
That is great, thanks. So how is the nyrod used exactly? Do you put it all the way through the elevator and then cut where the hinge blocks come through? Do you use a small piece of nyrod (or something else) in the hinge block to act as a bushing?
 

Tseres

Whiny Old Man
You have it exactly right. /you glue the nyrod on the center line of the elevator. Block it in both ides with 1/8 sheeting then cap it off with whatever size of wood you need to form the radius. Then lay out the location of the hinge blocks and cut out the slot through the nyrod to the depth that you need to clear the hinge block plus a litle more. The hinge block gets pre drilled and a piece of nyrod glued in to use as a bushingWhen you go to install it. You have to insert the piano wire through the elevato and the hinge blocks. Then clamp some spacers in the gaps. mine was 1/16 ply for clearance. Now you can glue the hinge blocks in place. This allowes perfect alignment. I used CA but will block it in on the remaining side with Epoxy. Haven't got that far yet.
 

Tseres

Whiny Old Man
I finished one side of the stab and one Elevator. Have them rough sanded. Started the other side.

IMG_6174.JPG IMG_6175.JPG IMG_6177.JPG IMG_6178.JPG IMG_6182.JPG IMG_6183.JPG IMG_6184.JPG
 

Tseres

Whiny Old Man
IMG_6185.JPG IMG_6186.JPG IMG_6187.JPG IMG_6188.JPG IMG_6189.JPG IMG_6190.JPG I'm still in the little here and a little there mode. Still get some things accomplished. :)

PS. I'm back on cable. What used to take 5 minutes to upload, now takes 30 seconds.
 

MIKEPF5

New Member
Hey Mr Tom, I just received my kit last week an have a few questions if you don't mind?? was mocking up the fuse an with the 2 sides plugged into the firewall my sides are 1/8" to wide for the formers according to the plans, almost like the slots was cut 1/16" to wide?? was also looking at your stab build (looks great by the way) you used balsa stock for the t.e. instead of the ply balsa lamination?? the plans leave a lot to the imagination an talking with Mr Wendall he hasn't built one yet either. I will be following your build for a great reference!!
 

Tseres

Whiny Old Man
I wouldn't worry about 1/8 th. The plans will shink. depends on the humidity. Cut your cross braces to the gap that you have in the firewall. You only have half of the top view. For the cross braces in the tail section. Measure the width on the plan and double each section to get your taper. You will find a lot of things not fitting. You will have to make them fit. It's almost like scratch building with some of the work roughed out for you. LOL.

You can post your build pictures here if you want. Wouldn't hut a thing. Tom Can do the same.
 

MIKEPF5

New Member
I wouldn't worry about 1/8 th. The plans will shink. depends on the humidity. Cut your cross braces to the gap that you have in the firewall. You only have half of the top view. For the cross braces in the tail section. Measure the width on the plan and double each section to get your taper. You will find a lot of things not fitting. You will have to make them fit. It's almost like scratch building with some of the work roughed out for you. LOL.

You can post your build pictures here if you want. Wouldn't hut a thing. Tom Can do the same.
thank you for the reply, the plans are not the best I have worked with. I will be following your build an asking questions along the way if you don't mind?
 

Tseres

Whiny Old Man
My company went home and it was a rainy day. That means shop time. Some of you know that this is not going to be my plane. It's going to my buddy Greg's. He made the decision to go with the Pepsi scheme. The rudder is shaped differently then the one that came in the kit. I down loaded a picture of the chipmunk and on my copier I enlarged the tail to the same size as the kit. Drew the lines on the print and made a ply wood template for the shape. Used the template to make to changes to the shape of the Ruder. Pretty happy with it so far.IMG_E6192.JPG IMG_E6191.JPG IMG_6214.JPG IMG_6215.JPG IMG_6216.JPG IMG_6217.JPG IMG_6218.JPG
 

Tseres

Whiny Old Man
I think tomorrow is going to be a flying day. Today wasn't. Framed up and sheeted one side of the vertical fin and installed the hinges.IMG_6219.JPG IMG_6220.JPG IMG_6221.JPG
 

Tseres

Whiny Old Man
Had a break controller put on Deb's Traverse. This gives me the opportunity to use my trailer at local events.
While I was waiting for the car to get done I checked out the frame for straightness with my new Laser. Fun Toy! Plane passed the test with flying colors. Then I finished the canopy mounting hole area before the sheeting. Only have one side done but it looks good. :)IMG_6224.JPG IMG_6225.JPG IMG_6226 (1).JPG IMG_6227 (1).JPG IMG_6228 (1).JPG IMG_6229 (1).JPG IMG_6230.JPG IMG_6231 (1).JPG
 

RonMarie

New Member
Your workmanship and progress look very good. I check on your postings almost every day and than go look at my plans.
I have a few questions if I may. What landing gear will you be using?
Do you know if anyone has flown this model? And dose the wing have any washout built into the design or is it just 2 degrees positive with the
stab at zero degrees? I need to check the plans again for firewall thrust
too. Thanks for any info you provide and keep up the good work.
 
Top