1984 Moulton AM7 question

In article <[email hidden]>,

Steve Watkin said:

I have the 9-30 7 speed cogs on my bike. I am considering trying to
set them up as indexed but wonder if anyone has tried this? Was it
successful? None of the individual cogs are ramped but the 3 small
ones seem to be "twisted" , does this cog set index or do you always
have to over-shift? If indexing is possible, what's the cog spacing ?
5mm ? And what shifter should be used with drops ? Sorry for so many
questions but if someones been through this all before it would be a
great help.

Is that a Shimano 6 or 7 sp cassette hub with three special Moulton cogs?

Tim McNamara said:

In article <[email hidden]>,

Steve Watkin said:

I have the 9-30 7 speed cogs on my bike. I am considering trying to
set them up as indexed but wonder if anyone has tried this? Was it
successful? None of the individual cogs are ramped but the 3 small
ones seem to be "twisted" , does this cog set index or do you always
have to over-shift? If indexing is possible, what's the cog spacing ?
5mm ? And what shifter should be used with drops ? Sorry for so many
questions but if someones been through this all before it would be a
great help.

Is that a Shimano 6 or 7 sp cassette hub with three special Moulton cogs?

Not if it's from 1984...

I'd be willing to bet it's a Suntour freewheel, with a couple custom
cogs at the inside. Suntour "New Winner" freewheels went down to 11
teeth on a six-speed setup, so 9 on a 7-speed isn't a stretch. (Really
fuzzy memories of a Bicycle Guide magazine review surfacing here...)
If it *is* a New Winner freewheel, then the spacing isn't consistent
between the cogs and indexing probably isn't possible.

You're probably better off consulting with Angle Lake Cyclery in
Seattle: http://anglelake.com/index.html if you're in the U.S. or the
Moultoneers if you're strictly virtual: http://www.moultoneers.info/
:-)

If you have your heart set on indexing, "upgrading" to a Shimano
Capreo setup is probably your best bet: http://sheldonbrown.com/capreo/index.html
..

Jeff

Steve Watkin said:

I have the 9-30 7 speed cogs on my bike. I am considering trying to
set them up as indexed but wonder if anyone has tried this?
Was it successful? None of the individual cogs are ramped but the 3
small ones seem to be "twisted" , does this cog set index or do you
always have to over-shift?
If indexing is possible, what's the cog spacing ? 5mm ? And what
shifter should be used with drops ?
Sorry for so many questions but if someones been through this all
before it would be a great help.

SW

mine's an 8 speed with a Sachs Neos derailleur and a 8 speed Shimano
downtubelever. Freewheel could be an suntour with the three Moulton
endcogs, and it works well enough. It's been a long time ago but I don't
think if I had to mess about with cogspacing much.

--
/Marten

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