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Horizontal dropouts + chain tensioner = suspenders & belt?

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Horizontal dropouts + chain tensioner = suspenders & belt?

Old 03-06-15, 10:23 AM
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Horizontal dropouts + chain tensioner = suspenders & belt?

I will be installing an IGH on a vintage frame with horizontal dropouts. My existing cassette-hub wheel axle sits entirely at the back of the dropouts, which gives me room to run a 38mm tire. When switching to an IGH, I would like to retain my clearance for a 38mm tire. This means pulling the axle to the far back of the dropouts. This seems to indicate that I will have to run a chain tensioner, unless I am able to get lucky enough to achieve sufficient chain tension when the axle is pulled to the back of the dropouts. As a first-timer to setting up an IGH, I have been searching for information on the ideal chain tension, and have not done too well. What is the rule of thumb for measuring adequate chain tension?

Also, if I go a little slack on the tension, but have a bash guard outboard of the chainring and a drop-stopper inboard, and the Shimano cog on the hub with the dual chain guards, am I OK without a chain tensioner if the chain does not end up with the ideal minimum tension?

Forgive my ignorance on all-things-chain-tension, since I have been a derailleur man for all but my first few years of bicycle riding.
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Old 03-06-15, 10:43 AM
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why double post?
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Old 03-06-15, 12:59 PM
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Originally Posted by fietsbob
why double post?
This seems to happen to me when I post using an Android tablet. Dunno why. Never happens on other forums.
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Old 03-06-15, 01:03 PM
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If you have at least 12mm of adjustment in the dropout slot, you should be able to use a half-link to get the proper chain length without a tensioner.
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Old 03-06-15, 01:03 PM
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Originally Posted by motorapido
This seems to happen to me when I post using an Android tablet. Dunno why. Never happens on other forums.
I know you can delete posts, but I don't believe that it's possible to delete your own original post starting a thread. What you can do is flag the original post and use the comments box to tell the mods it's a duplicate thread and ask it to be closed or deleted.

Otherwise you can add a redirect link to the original thread to keep everything in one place. I'll do it here, but you might want to edit the original to say it's a dup and redirect people.

DUPLICATE THREAD, PLEASE GO TO THE ORIGINAL
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