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Help with replacing Double crankset with Triple

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Help with replacing Double crankset with Triple

Old 12-21-09, 12:34 PM
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edmundsa
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Help with replacing Double crankset with Triple

Hi Folks. Hope someone can help.
I am converting my old double FC-7700 crankset to a FC-7703 triple (old age!). The triple comes with a 53 as standard but I want to put my old 52 on instead (replaced the 53 the bike came with - bad knees this time). I have noticed that the inside of the 53 looks different from both my original 53 and my 52, with some ridges underneath the teeth and it is stamped D-53. Both my 53& 52 are stamped as B types. I presume the 'D' is a reference to a triple but whtat's the differene. Will my old B-52 now shift properly with the D-39 middle ring.
Thanks all.
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Old 12-21-09, 01:05 PM
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no one wants to admit they've ever run a triple.

i haven't, not that there would be anything wrong with that......
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Old 12-21-09, 01:09 PM
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Do you have triple-compatible front and rear derailers?
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Old 12-21-09, 01:55 PM
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Originally Posted by Guillotine007 View Post
no one wants to admit they've ever run a triple.

i haven't, not that there would be anything wrong with that......
Ill admit it Im a woose I need the triple to get up them big hills
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Old 12-21-09, 02:02 PM
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Can't help you with your question, but keep in mind that it is customary to also have your testicals removed when you shift to a triple
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Old 12-21-09, 02:06 PM
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I went from a trip to a double. When do I get my nuts back?
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Old 12-21-09, 02:16 PM
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I am old and I ride a few hills. First road bike had a triple and I used every gear. Subsequent bikes have had compacts and Wheras 30/26 used to be the lowest gear on the triple- I now use 34/27 on the same hills and don't find them any steeper. But definitely easier than 39/27 that I did try once.

But if changing from Double to triple- you may need a new F.D. and make certain the changers/brifters can take the extra shift.
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Old 12-21-09, 03:04 PM
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Originally Posted by Daytrip View Post
I went from a trip to a double. When do I get my nuts back?
I believe there is a no return policy, especially if you are married.
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Old 12-21-09, 03:07 PM
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Nuts!
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Old 12-21-09, 04:00 PM
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Originally Posted by Daytrip View Post
Nuts!
I believe in your case that would be nutless
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Old 12-21-09, 04:23 PM
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Originally Posted by edmundsa View Post
Hi Folks. Hope someone can help.
I am converting my old double FC-7700 crankset to a FC-7703 triple (old age!). The triple comes with a 53 as standard but I want to put my old 52 on instead (replaced the 53 the bike came with - bad knees this time). I have noticed that the inside of the 53 looks different from both my original 53 and my 52, with some ridges underneath the teeth and it is stamped D-53. Both my 53& 52 are stamped as B types. I presume the 'D' is a reference to a triple but whtat's the differene. Will my old B-52 now shift properly with the D-39 middle ring.
Thanks all.
It'll shift OK. I assume, as others have mentioned, you have the correct shifters (incredibly important) and front derailler (ok, also very important) and rear derailler (well, this one is important too)?

Rear derailler might be OK but generally you need a long cage RD to take care of all the combos that are possible with a triple.
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Old 12-21-09, 05:20 PM
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Originally Posted by exRunner View Post
Can't help you with your question, but keep in mind that it is customary to also have your testicals removed when you shift to a triple
Presumably you get an additional set if you go from a derailleur to a fixed gear. Just ask on the SS/FG forum!
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Old 12-21-09, 05:48 PM
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yeah except they use them instead of the quick release skewers
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Old 12-22-09, 11:39 AM
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Try www.sheldonbrown.com for information. Or, if you have a nice, knowledgeable local mechanic, he or she should be able to answer your questions, especially if you buy something from them.

Ignore the people who scoff at the idea of using a triple. I don't ride to please anyone else. I ride to please myself, and I like triples too! If someone doesn't like it, the heck with them (and get off my lawn!)
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Old 12-22-09, 12:17 PM
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I liked my triple, but once I learned how to climb in a higher gear, I found I never used the granny gear anymore. All that extra/specialized hardware for one lousy gear. The relative simplicity of the double appeals to me.

But I would like to get my balls back. The relative simplicity of not having them doesn't appeal to me.
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Old 12-22-09, 04:56 PM
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Converting to a triple...hmmm. that is a new one.

The only triple I have ever ridden was a 13 year old mountain bike, but the gears were so stuffed that I couldn't shift between the front cogs. I was permanently stuck in the middle chainring, lol. Terrible bike. So you could say I had a single, with only 6 gears in the back.
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Old 12-24-09, 09:43 AM
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To Bi BlueToe, thanks for a considered response. Yes, I too ride for myself and don't care what other people think. My thread said I was doing it because I need lower gearing cos of knee problems. Will contact sheldon brown for an answer to my question.
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Old 12-24-09, 09:45 AM
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It's a little too late to contact Sheldon. RIP. But his memory lives online. Lots of great stuff on his website.
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Old 12-24-09, 11:32 AM
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Originally Posted by edmundsa View Post
The triple comes with a 53 as standard but I want to put my old 52 on instead (replaced the 53 the bike came with - bad knees this time).
Did I read this right? You want to swap the largest chainring on the triple crank from 53 to a 52? If that's the case, I'd say "Don't bother". Very little difference in gearing between a 53 and a 52, I'd bet...
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Old 12-24-09, 11:39 AM
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I suspect that the shifting aids are slightly different between the double and triple big chainring. It's been awhile but I have intermixed them in the past with adequate results. YMMV.

Honestly, if it was my bike I'd probably just keep the 53 ring. If I was going to change anything I'd probably get a "junior" cassette with a 14 tooth small cog.
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