Door bobbins

[cortinaelan455]

Anybody know the thread size of the nylon door bobbins. I'm in the process of replacing mine and I need to clean the thread up. I've ran the jam nut in where the bobbin would go and now the bobbins go in smoothly as far as the jam nut went but I need something that will go all the way through to clean it out.

[Elan45]

Looks to be 3/4-16 UNF I have a new old stock hinge pin in my hand and a thread gauge in my other hand.

Roger

[baileyman]

We're talking about the hinge pin screws in nylon? Make sure you get old ones!

I got brand new ones because, well, I was buying everything new that I could, but they're oversized by about a millimeter! After struggling with them I dug into the parts bin and retrieved the old ones, cleaned them up with a wire brush, and man are they nice! Easy adjustment, easy locking with the hollow jam screw. Just great.

The new ones are garbage.

If you think an old one is worn, you can easily put a new hemisphere on it by spinning it and using suitable files.

John

[cortinaelan455]

I've bought new ones first black ones from sjs which I didn't like, then i got 4 white ones from mattys last week. The new ones seem to be hard plastic and if you put any pressure on them the square drive strips. I hadn't thought about reshaping the originals. I'm still trying to find something that fits the hole that I can run through first to clean it out before fitting the nylon pin.

[englishmaninwales]

See this thread about how to deal with reproduction door hinge pins.
viewtopic.php?f=36&t=41167&p=289434&hilit=+Hinge#p289434

Malcolm

[cortinaelan455]

Thanks Malcolm,
That's exactly what I was looking for. I've ordered a tap.

[c.garde]

Gent and nerds,

Have been there This worked for me ..

Use the corret square bit. Insert to bottom.
The slightly rounded 1/4 inch. bit will NOT do. I used the square bar from a domestic door handle

Tight thread:
I have the luxury of a thread restoring kit. Very cheap and a bone when needed .
I did try a die as first choise . but this would not cut into the thread. ( It was just tight ! )
The restorer however cut a very fine thread from the thread ( (-: ) - and still a perfect fit.
You might however be able to make your own die for this special job.
Find a nut of correct dimension and make 3-4 cuts into the thread .

Maybe the rough edges from your cuts will do the trick .

Dont forget to check the bottom cup-bobbin in the body.
It is quite simple to renew without major surgery.

C.Garde

[englishmaninwales]

Gent and nerds..........

C.Garde

My brother (who has no interest in getting oily under cars whatsoever) refers to me as a nerd and laughs at me for seeking advice from an Elan nerd forum (but he plays golf)