Shimano Free wheel compatibilty advice needed
03-15-18, 08:43 PM
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Shimano Free wheel compatibilty advice needed
Hi,
I picked up a Nishiki Tri-a yesterday and it is in perfect shape with the exception that the freewheel was missing.
My question is do I need a special freewheel for SIS index shifting or will any freewheel work?
I would like to have it shift smoothly etc, and see a number on ebay right now that are inexpensive.
Will this one work SHIMANO MF-TZ20 6 Speed Index Freewheel
Will any Shimano freewheel work? Recommendations appreciated.
Thanks, Ben
I picked up a Nishiki Tri-a yesterday and it is in perfect shape with the exception that the freewheel was missing.
My question is do I need a special freewheel for SIS index shifting or will any freewheel work?
I would like to have it shift smoothly etc, and see a number on ebay right now that are inexpensive.
Will this one work SHIMANO MF-TZ20 6 Speed Index Freewheel
Will any Shimano freewheel work? Recommendations appreciated.
Thanks, Ben
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03-15-18, 09:31 PM
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Pretty much any current same cog count freewheel is likely to be SIS compatible. But any SIS compatible freewheel should also state that in the specs. Even if all the docs suggest things are good the proof in in the actual trying. BTW a new cog set might also want a new chain. Andy
03-15-18, 09:35 PM
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Any Shimano SIS compatible 6 speed freewheel will work, including the one you cite.
03-15-18, 09:49 PM
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Pretty much any current same cog count freewheel is likely to be SIS compatible. But any SIS compatible freewheel should also state that in the specs. Even if all the docs suggest things are good the proof in in the actual trying. BTW a new cog set might also want a new chain. Andy
Thanks for the reply...the one I listed in the post has that strange large black ring on it (why the difference?), in your estimation, will the freewheel allow for smooth shifting. I do not know what freewheel was on there originally, any ideas what it might have been if I want to find an original one?
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03-15-18, 10:08 PM
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[QUOTE=xiaoman1;20226127]Andy, a little hard to tell when buying on line...new chain yes
QUOTE]
Are you in LA, CA? I understand they have bike shops there where you can touch and get eye to eye questions answered. Andy
QUOTE]
Are you in LA, CA? I understand they have bike shops there where you can touch and get eye to eye questions answered. Andy
03-16-18, 12:45 AM
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Only caveat on "any" would be a TZ30, or similar, that has the largest cog of 34t. If your derailleur max cog rating is 28t, you could have problems. This is just a word to the wise if you want to replace the TZ20 someday with one that has lower gearing.
John
John
03-16-18, 05:53 AM
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Thanks for the reply...the one I listed in the post has that strange large black ring on it (why the difference?), in your estimation, will the freewheel allow for smooth shifting. I do not know what freewheel was on there originally, any ideas what it might have been if I want to find an original one?[/QUOTE]It would have originally had a very similar one, but without the black cog. The black is just marketing/advertising. You're not going to have much choice for equipment that dated, unfortunately. I tried a quick search for Hyperglide 6 speed freewheels (which would shift better) but only found an off-brand - https://www.google.com/search?q=sunl...17143638901023
Last edited by cny-bikeman; 03-16-18 at 06:07 AM.
03-16-18, 07:51 AM
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The color difference is just marketing; calling attention to the extra-low gear the cog provides.
in your estimation, will the freewheel allow for smooth shifting. I do not know what freewheel was on there originally, any ideas what it might have been if I want to find an original one?
03-16-18, 08:08 AM
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Thanks to all for the help.
Best, Ben
Best, Ben
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03-16-18, 02:27 PM
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Don't know where you're sourcing your parts, but if you're looking for used, before hyperglide there were twisted tooth SIS 6 speed freewheels.
either will work, but the hyperglide freewheel will shift much better.
John D. posted a picture of a hyperglide freewheel above. Notice the ramps cut into the side of the cogs? The original SIS freewheels didn't have this feature.
either will work, but the hyperglide freewheel will shift much better.
John D. posted a picture of a hyperglide freewheel above. Notice the ramps cut into the side of the cogs? The original SIS freewheels didn't have this feature.
03-16-18, 05:50 PM
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Hilarious! I'm sitting in my garage this minute waiting on a local buyer fondling two twist tooth Shimano freewheels in six speed wondering what to do with them.
03-17-18, 04:24 PM
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Maybe I should take a look in my garage....Thanks again, Ben
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