furloughed ual

My Feedback: (31)

Scott, u fly the 86 yet?

Ryan

furloughed ual

My Feedback: (31)

Certainly an option, but I'll support Todd and his business if the option is there. Besides that, I order 1-2 times a month form DW anyway.[X(]
Ryan

rusty55125

My Feedback: (6)

Yep!!. It's the best flying Jet I have flown to date. I unfortunately had a gear up landing that took off the front leading edge slat and gear doors. No other damage, not even to the fuse. It's all fixed now and ready for next year

Scott

ianober

My Feedback: (12)

Here is a pic of the hinges from Lee Valley. They are great and come in 31" lengths which is nice so you know you will have enough.

furloughed ual

My Feedback: (31)

no pic...

ianober

My Feedback: (12)

Gees Ryan, gimme a chance to get it up!

furloughed ual

My Feedback: (31)

Uhhhmm.....I aint going there....

rcjets_63

My Feedback: (4)

I ordered two lengths (each) of the 1/2" and 5/8" hinges and they arrived last night. The quality seems quite good. I'll give them a try this weekend and post some pics/impressions.

Regards,

Jim

P.S.: Ryan, I'm sending you enough hinge for the F-86 so stop your whining about pics.

furloughed ual

My Feedback: (31)

pics? what pics?

rcjets_63

My Feedback: (4)

OK, I tried the 1/2" and 5/8" piano hinges from Lee Valley Tools. Both of them have pilot holes (spaced about 2" apart) along each side of the hinge. I clamped the hinges in place and drilled through the fiberglass, then flipped the door over to drill the countersinks in the fiberglass. The hinge was installed using BVM countersunk poly-ply screws. This was just a test run, for the final install, I'll also glue the hinge to the door using Hysol.

When using the 1/2" hinge, the screw holes are about 3/32" from the edge of the fiberglass which is a bit close especially for a countersunk hole. When using the 5/8" wide hinge, the holes are about 1/8" away from the edge which is better. All in all, the 5/8 is a bit easier to work with, but I found that the hinge was quite a bit harder to turn than the 1/2" hinge and I'd be concerned whether a small door cylinder can generate enough force. If you've got a larger diameter cylinder, you'll likely be fine. I'm using small cylinders so I'm going with the 1/2" hinge.

Regards,

Jim

invertmast

My Feedback: (23)

Jim,
I measured the hinge pin of all three sizes of the lee valley hinges at. 041". I also thought that they were a little tight to move with a air cylinder. I picked up some. 039" music wire to use as a hinge pin. I havent had the chance to try it yet, but i think it will free up the movement some. If it ends up being to loose, ill just use some. 040" stainless safety wire.

furloughed ual

My Feedback: (31)

Thomas, let us know if u can get the wire out OK...on the latest Nelson hinges, the wire breaks when trying to pull it out on pieces 5-6" long.
Ryan

invertmast

My Feedback: (23)

FRyan,
I had no problems pulling 1/2" long pieces out, and the wire was hard enough to not compress with needle nose pliers, but ill let ya know on the longer pieces.

ianober

My Feedback: (12)

Did you guys try putting a little 3 in 1 oil on the pins yet?

furloughed ual

My Feedback: (31)

Yep...no help on the Nelson hinge.

Vincent

My Feedback: (61)

I know this is not as hi tech as piano hinge but these pics show a simple way of doing the same thing. I have this setup on my jet and it works smoothly and has never come apart.
Vin...

rcjets_63

My Feedback: (4)

Yep, perhaps made it a bit better but the 5/8" is still way too stiff for a small cylinder. I think I've got a piece of .039 music wire hanging around so I'll try to see if I can get the pin out. I've got doors that are up to 8" long.

Jim

invertmast

My Feedback: (23)

let us know how it goes jim. It will be next week before i get around to trying the smaller hinge pin.

marc s

Not a piano hinge but very useful for hinging gear doors, hatches etc. If there is a curvature on the surface to be hinged a piano hinge is not ideal, and this is often the case with jets. The two hinges on the left are brilliant for larger jets, they have large plates to fix and mount so work for most applications.

If you rebate one of the surfaces to allow the 'hinge' part to finish flush with the edge of the opening you can get very tight gaps with no binding. Used these on a recent Skygate Hawk and HT Modellbau PC21 build.

PM me if you want info - happy building.

marcs

rcjets_63

My Feedback: (4)

I managed to pull the pin out of a 6" long piece of the 5/8" hinge. The hard part was getting a good grip on the wire. I peeled back one of the knuckles to expose the wire and put a 90 degree bend in the wire. Then used a pair of needle nose pliers to hold the wire and flat pliers to hold an hinge flange and pulled. Out it came in one piece, no problem. I didn't have any .039 music wire to try as a replacement pin but I'll drop by the LSS to get some today.

Regards,

Jim

rcjets_63

My Feedback: (4)

I dropped by the LHS yesterday and bought some .039" music wire and used it on the 5/8 wide hinge. It worked great. The hinge moves freely but doesn't have excessive play. This is the combo that I'll use. Although you have the hassle of pulling the original pin, using the music wire has the advantage that it can be easily pulled out later if you want to remove the door for maintenance/access.

Regards,

Jim

invertmast

My Feedback: (23)

Jim,
great to hear the idea worked! I'll be using this process so I can make the panels on my FW-190 open like scale so i can get to the base side of the radial in it. Works out great as well, as I know i can use these on some of the access panels on the F-14 project as well

grumania

Hello everybody,
earlier in this forum, it has been mentioned that our hinges come rolled and that this is a disadvantage.
1. the hinges come rolled, because of the shipping cost - some people order 5 metres and don`t like 5 pieces in 1 metre each....
2. It is VERY easy to get the hinge straight by cutting it to length first, then straighten it by simply bending in the hands, this never took me longer than a minute.

We have been lucky to find a new supplier who manufactures this hinge band for us at a much better price now.For this reason, we are able to reduce the price dramatically.

Ilja

JGrc

My Feedback: (29)

I get them from here, they are usually in stock: http://www.nelsonhobby.com/miniature_piano_hinges.php




JG

TonyBuilder

My Feedback: (11)

Dream works has them.

TB