Hub threads and freewheels

[Gramo]

I've removed a lovely old, but now worn 7 speed sachs 'LY92' freewheel from a Campag Nuovo Tipo hub and had an el-cheapo Golden-Sun/Sun-Race/Sturmey Archer to put on. (It's for the pub bike with 126 dropouts.) Now the thread pitch seems identical (hub is ISO - 1.375 x 24tpi), but the freewheel sits slightly loose on the threads, and consequently there's a bunch of clunking and grinding when it does what its meant to - freewheel - so I won't be using it as things stand. Is there a bodge, or is there another budget freewheel available that fits more snugly? Shimano maybe? Sheldon says there might be a mismatch between older Italian and British ISO standards.

I've had a go with plumber's tape but there's still an amount of play.

I see that IRD make freewheels, but as they're not overly cheap I might as rebuild the wheel with an old RX100 7 speed cassette hub I have lying about and use cassettes.

 

[TGR]

Hi,

I recently had a prob with a Nuovo Tipo hub - i managed to thread an Italian FW onto it causing damage to the threads. I eventually got it off and i removed about three threads but, luckily, i have enough left to use it. I have been looking at FW's today and they cost around £25 for a 6sp Regina. Shimano NOS ones are cheaper - around £15 ish (or less).

SJS Cycles had a few and I know a guy who has some for sale - it depends on what ratios you want/need as to whether it would suit.

If you get stuck, PM me and i will try and contact the guy i know.

Regards,

Richard

 

[TGR]

Here is the link for SJS -

http://www.sjscycles.co.uk/freewheels-5 ... ept77_pg1/

There is definitely a Shimano one - 14 - 28 (i think) but SJS don't seem to have it.

Richard

 

[TGR]

There is also this -

Regina 5 speed titanium freewheel 14-22. ISO threads. Rarest off them all !ISO fits English threads also.
Euro 359.00

Too expensive for me!

Richard

 

[TGR]

LOL OOPS!

I just noticed the '7sp' - apologies, but this gives you oodles of options -

SJS - http://www.sjscycles.co.uk/freewheels-7 ... ept79_pg1/

Richard

 

[Gramo]

Thanks TGR. It's for the pub bike (no. 3 in the hierarchy of spend), so I want to keep things as budget as possible, and 359 Euros would buy quite a few pints! The old Sachs was 13-21 and I'd not want to go much above 24.

I have an old Maillard hub too, and the freewheel has the same loose fit on that also. So it's not the pitch of the thread (it screws on fine) but the depth.

My browser's playing silly buggers and for some reason SJS's webpages aren't loading. Ooh, Hang on! I could also try Mr Stone's site. No scrub that, life's too short. It'll be quicker to rebuild the wheel with the cassette hub.

 

[Gramo]

Apparently you can split these freewheels open and reverse mount the (worn) larger cogs after filing off a locating tab. I say apparently, because chainwhips, hammers and violence haven't worked yet