Bicycle Mechanics - Suntour Honor RD Parts Breakdown?
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12-24-05, 01:13 PM
Any idea where I can find an illustrated parts breakdown of an old Suntour Honor rear derailleur? A friend has an old 70s/80s entry level bike with one that he disassembled to clean, without making notes of the sequence. I can figure out most of the reassembly, but want to make sure I'm not missing anything. Also, what's the proper way to set the pulley spring for the proper cage tension? There are three different spring tang holes in the portion of the cage body that is permanently attached to the derailleur body, along with the bolt that passes through the screw that has the six slots in it. I'm guessing the three different holes set varying degrees of tension based on which one the spring tang goes into, but how do you determine the proper position of the other spring tang in the slotted bolt? TIA for any and all help, it is appreciated....
12-26-05, 07:20 AM
The beauty of these old SunTour's is that adjustability, and on the Honor and GT models, the fact that you can remove them from the bike without breaking the chain. As the springs can lose tension with use and age, there are probably no specific holes to start with. Try starting with the tension pulley directly above the jockey pulley with no spring pressure, then wind the cage counter-clockwise far enough to install the stop screw. Use the least amount of tension that keeps the chain from hanging down or skipping in the small/small combination. It may require a few tries.
12-26-05, 07:31 AM
....and on the Honor and GT models, the fact that you can remove them from the bike without breaking the chain.
Not to hijack this thread too much but you can remove any Shimano rear derailleur without breaking the chain too. You remove the lower pulley bolt and the pulley itself, then "scissor" the two cage plates slightly apart. The chain comes out easily. You can install a new derailleur over an intact chain using the same procedure.
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