OK, I know this is a long shot, but what the heck.
The Hobbs of Barbican Blue Riband Tandem project is moving along well. Thanks again to all of you who followed along as I had it shipped here from the UK back in May.
The tandem has the original (1952) Stronglight cottered cranks with TA rings. The seller actually gave me a nice supply of spare rings, but what I need ain't there...
I am running a 4-speed cyclo-benelux freewheel on the rear (with a cyclo-benelux derailleur). The freewheel is 1/8 inch... so I would like to find a final drive ring in 1/8 inch. The stronglight cranks use the traditional 5-bolt pattern, but the ring needs to have holes to which I can mount the timing ring...
The six holes for the chainring bolts to which the inner ring will be mounted are 55mm from the edge of the inner center hole of the chainring...
I hope this is all clear - if not, I can send a pic. I'm sure there are plenty of 3/32 rings out there, but I have a 1/8 chain and the 1/8 block - it would be sloppy indeed to put a 3/32 final drive ring on there just to get the project completed...
So, if anyone can help, please let me know.
I am looking for good to average condition - I am restoring the tandem with original paint, and the original components, no NOS here...
If you can help, please contact me off-list.
Thanks everyone!
Duncan Granger
Mountville, PA