Classic & Vintage - Regina Freewheel Question

The rear spacing on my is 115 mm, it takes a 4-speed freewheel. 4-speeds are difficult to find but they are available except for the wide-spacing versions. I want to find one for rides that have hills and my current granny gear, 47/22 won't cut it. I'm looking for a 26, 28 or 30 cog for my granny. I can find these in the 5-speed freewheels.

I thought I read somewhere 5-speed Reginas used the same inner body as the 4-speeds. The 5-speed small cog extends past the inner body. Here are some pictures to illustrate.

4-speed
http://i23.ebayimg.com/04/i/000/a4/65/f049_1_b.JPG

5-speed
http://i15.ebayimg.com/04/i/000/a7/39/56b2_1_b.JPG

Can I modify a 5-speed to be a 4-speed? Please don't ask me to change my rear spacing to 120 mm, I won't do it.

In this site there is a Regina catalog scanned into a series of jpgs. You can download and print them out.

http://www.wooljersey.com/gallery/v/broderir/Catalogs-Posters/

It shows all their boeies from 78 and the "sprocket #" for each position on the bodies. A quick review shows that the three inner cogs are 3 - 3 - 2 so yes, maybe te bodies were the same, you'll have to look closely at the pictures.

The biggest I have is on regular "eatra" is a 22, with an old "Extra Oro" 23, nut much help, i'm afraid, but derby king (derbyking.com??) should be able to sell you a large "# 3" cog. Regina had a wierd numbering method - take a look at that catalog and you'll see why.

If you have the 5 speed freewheel, you should be able to unscrew alll the cogs and put the three loarest ones on the 4 speed.

If your assumption is correct (and it may very well be), then the 4, 5, and 6 speed freewheels ALL used the same body, and it was the differences in the smaller 1, 2, or 3 cogs that made it a 4, 5, or 6 speed freewheel!

Bear in mind that those cogs tend to take on the strength or hercules after many years of riding and are very difficult to remove. And, the two largest cogs screw off to the INSIDE - towards the spokes.

cm68, thanks for the links, they are very helpful. As best as I can see, the innerbody is the same with the 3 inside cogs being identical (3,3,2) except for a strange 5-speed that has a 3,2,10.

As I see it there are two options, replace the 2 or 3 inner cogs of a 4-speed with 5-speed cogs or remove the 2 outer cogs of a 5-speed and replace with a 4-speed cog (1).

And derbyking.com showed a Regina with Atom cogs on the inside so I can get a cheapo Atom to the job.

Tearing down and rebuilding an old freewheel shouldn't be that hard. :rolleyes:

Thanks again for the info.

I can almost hear the paws ticking....oh, that's just my brain :)