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Changing Wheelsets - Do I need my old freewheel for my new rear wheel?

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Changing Wheelsets - Do I need my old freewheel for my new rear wheel?

Old 11-18-14, 09:42 PM
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Changing Wheelsets - Do I need my old freewheel for my new rear wheel?

I recently purchased a used Fuji road bike for upcoming triathlons and I plan to replace the wheelset.

Do I need to install my old freewheel (the rear set of gear cogs) on my new rear wheel? Should I take this chance to upgrade to a new freewheel? Does the rear freewheel depend on which derailleurs I use? I have a Shimano Sora rear derailleur (which I plan to replace ASAP) and a Shimano front derailleur.

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Old 11-18-14, 10:09 PM
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What you're imcorrectly calling a freewheel is a cassette. You'll move it over to the new wheels; cassettes are not typically supplied with wheels. I doubt there's a good reason to replace it; as you ride more, you may find you want a different gear spread, but that's down the road. Generally cogsets will work with different models of the same brand derailleur provided they're the same number of gears, so you can upgrade from 10spd Sora to, say, 10 spd Ultegra derailleur if you like. You can change brand derailleurs in some cases, but that's more complicated a question and probably better addressed when you know better what you want and need.
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Old 11-19-14, 03:17 PM
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" Shimano Sora rear derailleur (which I plan to replace ASAP)"

Is the old derailleur broken ? Why would you change it ?
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Old 11-19-14, 03:43 PM
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Originally Posted by Fuji_3.0 View Post
I recently purchased a used Fuji road bike for upcoming triathlons and I plan to replace the wheelset.

Do I need to install my old freewheel (the rear set of gear cogs) on my new rear wheel? Should I take this chance to upgrade to a new freewheel? Does the rear freewheel depend on which derailleurs I use? I have a Shimano Sora rear derailleur (which I plan to replace ASAP) and a Shimano front derailleur.
depending on the type of hub on the old rear wheel you may or may not have a freewheel on there. it may be a cassette (see wiki for def).

depending on which one it is you may have no choice in the matter regarding replacement. whether or not your current RD and others you may have will work with a new wheel and the type of cogs you eventually put on there involves a lot of variables. i would first address the rear wheel cog issue if any and then look at any necessary or voluntary replacements as regards the RD and shifters.
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Old 11-19-14, 07:39 PM
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Make sure you buy a Shimano compatible wheel, not Campagnolo. 2 different standards.
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Old 11-19-14, 07:54 PM
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How old is the bike and how many speeds/cogs are there??

There may be compatibility problems. Also, it's possible you really do have a freewheel and not a cassette, depends on the age of your original wheel.
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Old 11-19-14, 08:34 PM
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There's no way Sora is freewheel; it's certainly cassette.
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Old 11-19-14, 08:42 PM
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Originally Posted by chaadster View Post
There's no way Sora is freewheel; it's certainly cassette.
Ok I will accept that, I was thinking this could be a very old Fuji from the 1980's but I suppose they did not have Sora back then.
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Old 11-19-14, 09:45 PM
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Originally Posted by datlas View Post
Ok I will accept that, I was thinking this could be a very old Fuji from the 1980's but I suppose they did not have Sora back then.
Still a valid question. Could be an old bike, with a replaced derailleur.
OP, It would be a good idea to verify what you have on the wheel itself. How many cogs currently ?
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Old 11-19-14, 10:00 PM
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Originally Posted by Homebrew01 View Post
Still a valid question. Could be an old bike, with a replaced derailleur.
OP, It would be a good idea to verify what you have on the wheel itself. How many cogs currently ?
Not valid. It's extremely unlikely that someone training for a triathlon would be running a 6spd freewheel with an 8spd or more derailleur.
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Old 11-19-14, 10:02 PM
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No need to help him, if he wanted help he would of replied to the forum by now.
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Old 11-19-14, 10:23 PM
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Originally Posted by chaadster View Post
Not valid. It's extremely unlikely that someone training for a triathlon would be running a 6spd freewheel with an 8spd or more derailleur.
It's valid in that all kinds of bikes and people are out there. Some are noobs with old bikes who have no idea what they have. So, taking a few seconds to verify is worth it.

Spend some time in the mechanics forum to see how much time gets wasted trying to get accurate info from posters so that useful advice can be given.
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Old 11-19-14, 10:39 PM
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Originally Posted by Homebrew01 View Post
It's valid in that all kinds of bikes and people are out there. Some are noobs with old bikes who have no idea what they have. So, taking a few seconds to verify is worth it.

Spend some time in the mechanics forum to see how much time gets wasted trying to get accurate info from posters so that useful advice can be given.
It wouldn't even shift properly...oh wait, downtube friction shifters? Jesus.

Yeah, you're right it is possible-- and I do see some "what-kind-of-freakball-nutjob-would-do-that" bikes out there-- but I'd still put my money on "extremely unlikely". But, I do have to concede the point to you.
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Old 11-20-14, 09:49 AM
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first time I've ever seen a pissing match settled in less than 10 posts and with some civility.

re: the original poster and several questions

odds are it's a cassette, 8 or 9 speeds and can be moved to a new wheel.

the better question is, why replace the wheels in the first place if they're just getting into triathlons.
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Old 11-20-14, 10:55 AM
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Originally Posted by cderalow View Post
the better question is, why replace the wheels in the first place if they're just getting into triathlons.
Because many triathletes are into buying upgrades over upgrading the engine. A sentiment shared by many on this forum too. LOL
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Old 11-20-14, 10:59 AM
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Originally Posted by cderalow View Post
first time I've ever seen a pissing match settled in less than 10 posts and with some civility.

re: the original poster and several questions

odds are it's a cassette, 8 or 9 speeds and can be moved to a new wheel.

the better question is, why replace the wheels in the first place if they're just getting into triathlons.
shocking! and worthy of admiration on both parties part. kudos.

i'm not sure i would even be capable of it...
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