Slip Seam Hinge Needed

[bashibazouk]

Anybody have an alternate source for a B-9039 center hinge piece?

The factory lists it as out of stock and Forrest says it hasn't been available for 20 years.
Here is a link to the factory's listing, or non-listing.

It seems like it's just a die molding piece off of an old car. I can't seem to bend anything really close. Too many close bends.

Josh

[Acroeric]

Re: Slip Seam Hinge Needed

Josh- I think I have several spares. PM or e-mail me and I'll take a look.
Eric

[astjp2]

Re: Slip Seam Hinge Needed

I think I know the original supplier, you would have to buy 1500.00 of it though before they would sell you some. Tim

[Hank Jarrett]

Re: Slip Seam Hinge Needed

I need enough for two planes. Anybody else? Trust me, you ARE NOT going to make it yourself. I have tried, and taken pieces of it to many metal shops. They say it takes a special tool (I think they called it a "rolling brake"). Right now I have one plane with a piano hinge (looks like c**p) and another that binds up when you open it and has crack in the ends.
How many planes worth for $1,500?
Hank

[Ragwing nut]

Re: Slip Seam Hinge Needed

If you need it for short cowls, I should have a couple. The last NOS pieces we bought was when Taylorcraft was still in Lockhaven.

[Hank Jarrett]

Re: Slip Seam Hinge Needed

It is for the 41 and 45 and both have short cowls. Timing may be close to perfect. I can't put off making the 41 top cowl much longer (loads of time for the 45).
What do you want for some?
Hank

Still think it might be a good idea to put together some group buys. I have seen a lot of those hinges that have eaten themselves up. Lot's of us are going to need them eventually and group buys may be the only way to support ourselves in the long term (not like we can count on the factory). The BIG one that is going to eat our lunch is the loss of bungees. The big consumer of the material was golf balls and they aren't buying the rubber any more (not a golfer but my neighbor is a pro). We can still get bungees, but they have a finite shelf life and will be VERY expensive in small lots. We need to think ahead and make some bulk buys and ALL of us change them over a single winter every 4 or 5 years. Bungee changing fly-ins would be a blast! If you have a few teams doing the changes you could do a BUNCH of planes right in a row and the bulk buy of the bungees would be a lot cheaper (especially if the manufacturer could count on a big buy every 4 or 5 years.)

[astjp2]

Re: Slip Seam Hinge Needed

Its not a roll brake, its a roll former, a series of dies that a cut piece of metal is pushed/pulled through that reforms the metal into a specific shape. 1500.00 worth would probably be a couple of hundred feet. I sure don't have the room for that much. Tim

[Hank Jarrett]

Re: Slip Seam Hinge Needed

Roll FORMER! That's it. Let's see, a couple hundred feet would probably be about 80 planes worth (mixing long and shore nose planes).
I'll take two. Anybody else to fill out the rest of the 78 planes? Go open your cowl and listen for that scraping, creaking noise (unless you already have the nasty piano hinge). Can we come up with 80 orders?
Hank

[Carl E. Carson]

Re: Slip Seam Hinge Needed

I'll take one and bet I can get about 6 other Iowa T-crafters to get one each.

Carl

[Mark Julicher]

Re: Slip Seam Hinge Needed

I'll buy three. I have had mine welded too many times.

[Robert Lees]

Re: Slip Seam Hinge Needed

Would it be cheaper/easier to make the roll former ourselves?

It can't be rocket science (said the brain surgeon).

[flylo]

Re: Slip Seam Hinge Needed

I'd like two. Thanks!

[astjp2]

Re: Slip Seam Hinge Needed

http://www.dahlstromrollform.com/pdfs/drfcatalog.pdf

See if it is listed in this catalog, if so maybe you guys can do a group buy. Tim

[bashibazouk]

Re: Slip Seam Hinge Needed

Wow. Dahlstrom Roll Forming would seem to be the place. Looks like if they don't have it they could make it.

I wonder how hard it would be to make a few formers to duplicate it, though. The cross section is fairly simple and it seems like it could be done in two steps: first to bend the sharp bend for the interior lips and the second to bend the cee-shaped curve. Of course there's the matter of setting up a mount for the rollers, too.

On second thought, I wonder if I could turn some dies on my lathe to fit my Harbor Freight roller mill? Yeah, I answered my own question...

Anyone have pictures of what later models used? Piano hinges?

Josh

[astjp2]

Re: Slip Seam Hinge Needed

Its not one die, its a series that the metal gets rolled through to make the shape, you also have to consider the material and what kind of spring back you will get and manufacture it with enough prebend to get it where you want it. Its cheaper to buy than make. Call them and they might have some leftovers laying around or a sample that is about 3 feet long.