We found a case of these neat old Simplex chain guards and they are now for sale in the store. But they didn't come with directions. So here are a couple of old drawings from Simplex catalogs to explain things.
Originally these would have been used with Simplex plunger type front dérailleur. They bolt right on to the front of it as you can see in the drawings. But we also supply them with a 1" P-clamp and hardware to use if you don't happen to have a Simplex plunger-type front dérailleur on your bike.
I've also been working on a way to attach the guard directly to a modern front dérailleur. That would make a cleaner installation My experiments include a small screw going through the top of the "hump" and into the dérailleur cage or bit of wire or a wire tie to attach it to the cage. Of course you have to remove the L-shaped bracket on the guard first, but that's easy. By attaching the chainguard to the cage it would move with the dérailleur, pretty slick. Anyone experimented with this or have a better idea? Since the supply of these is chainguards is limited, we don't want to fabricate a special part. An off-the-shelf solution can't be that hard to figure out.
The chainguards been selling like the proverbial crepes (flapjacks). there are only a few left, but we think another case will arrive within a few days, maybe today.
09 May, 2007
Posted by Velo Orange at 10:25:00 AM