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  1. #1
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    the right rear derailleur

    i just signed up to this forum, so nice to meet you all. also, there's a dizzying amount of topics, so i don't know if i'm posting this under the right one.

    earlier this year, i bought a beautiful '83 smoked chrome puch austro daimler frame, 531 reynolds sl tubing, drilled campy dropouts. i love it. i want to keep it simple and light as possible. i don't want a second front chain ring. i only want gears in the back. i would like only 5 gears with as large of a gear ratio as possible - meaning, one that'll take me up steep hills with ease, and a nice small one that i can power through flats so fast it'll make my eyes tear up.

    i would also like to use a single, classic campy shifter on the downtube. like this one:

    http://www.ebay.com/itm/270806300337...#ht_720wt_1189

    any suggestions? i'm all ears.
    thanks!

  2. #2
    Senior Member due ruote's Avatar
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    Welcome. You seem to have your mind made up about the 1 x 5 thing, but here's my 2 cents worth:

    If you insist on a wide range with only 5 gears, you are in for some serious compromises, most notably in terms of the jumps between gears. Your choice of rear derailleur will need to accommodate the large cog. A long cage Suntour Cyclone comes to mind, although someone else will no doubt suggest something more euro-centric, and maybe that's the way you want to go.

    What do you plan to use for the chainring?

    You can play around with this calculator to find a combination that will work for your needs. I would do that first, then select a rd that will handle the freewheel.
    http://www.sheldonbrown.com/gears/
    Last edited by due ruote; 08-31-11 at 08:45 AM. Reason: added link

  3. #3
    Senior Member oggypop's Avatar
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    I'll second a Suntour Cyclone GT ... that RD is a work of art.
    .........................

    Stephen Lee Ogden, person
    http://www.StephenLeeOgden.com
    email: Stephen.Ogden@mac.com

  4. #4
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    guys - thanks so much for your quick replies. i'm ok with the big jumps between gears. believe it or not, i actually had a 5 spd sturmey archer internally geared hub on this thing until recently. i really liked the 256% gear ratio spread. if i can achieve that again with external gears and a derailleur, i will be very happy. i don't want to be shifting all the time... just when i really need to. i intend on staying in 3rd most of the time and basically treating this like a single speed with bail-out options in times of crisis... or if i just want to go really fast. i have ZERO allegiance to brand name, except for my little single shifter up front, which i would like to keep campy. so suntour sounds good - euro or not... i don't care.

    keep these good suggestions coming - i feel like a resolution is just around the corner.
    thanks again!

  5. #5
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    You might want to consider a smaller-than-typical chainring and a freewheel that is not too gigantic, to keep the weight and complexity down. It all depends on what you want to do with the bike - terrain, distance, as well as your preferred cadence and level of fitness....

    It will be kind of like the commuter that my son just recently set up. He lives in a hilly area, so he went with gears in the 32-71 gear-inch range (with a five-speed internally-geared rear hub, and a 42-tooth chainring). That gives him the equivalent of a 42/36 low gear, but not much in the high end (which is fine for what he does with the bike).

    If the frame is 126 mm at the rear, I would suggest running a seven-speed, or at least a six-speed. You can even run a skinny-six on a 120 rear hub, if your frame is 120 mm at the rear.

    If you are not stuck on having a derailleur, you could even build it with an internally-geared hub of 5 or more speeds....

    Edit: you posted while I was composing my post, so I didn't see it until after I posted. Why dump the S/A 5-speed, may I ask?

  6. #6
    incazzare. lostarchitect's Avatar
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    I agree with 753's question, why not keep the 5 speed internal gear hub? You seem to like the gear range and it will require less maintenance.
    1964 JRJ (Bob Jackson) San Remo Plus, 1989 Trek 520, 2000ish Colian (Colin Laing), 2013 Velo Orange Pass Hunter

  7. #7
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    regarding the sturmey archer, i didn't like the response time and i didn't like having to stop pedaling to shift gears properly. if i didn't stop pedaling, sometimes it wouldn't shift right and would alternate between two gears as you pedaled. drove me insane. also, in 4th and 5th gear, it made an annoying ticking sound that i couldn't get rid of. i tried out some of the new linus gaston 5's, which have the same hub, they behaved the same way, i realized that these weren't problems unique to my specific hub, and so i got rid of it.

    in terms of goals, i live in brooklyn where there are lots of bridges that i cross regularly, including the george washington bridge, which features a hill so narrow, steep, and curvy that it makes almost everyone dismount and walk. i never want to have to get off my bike. also, sometimes i go on some 40-50 miles bike rides in the palisades, which feature some monster hills.

    also, i like to go fast. usually, as fast as i can. on flats and downhills.

    so, terrain, distance, and speed are my priorities, about evenly valued.

    after some thought, i would allow myself 7 gears. please - those of you who have chimed in - could you recommend, based on my intentions, an appropriate size/make of chain ring, freewheel, cassette, and derailleur.

    thanks very much again. promise to post some good pics when i'm done.

  8. #8
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    shimano 105 rear hub with a hyperglide cassette and 7 105 speed rd. as Sheldon "105" Brown once pointed out it is quite the bang for less buck, and it is 126mm spaced
    Even a turkey can fly in a hurricane

  9. #9
    Mostly Mischief jan nikolajsen's Avatar
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    TA crank, 42T ring, 11-32 freewheel (they do exist!), Huret Duopar RD.
    Last edited by jan nikolajsen; 08-31-11 at 08:33 PM.

  10. #10
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    i bought an alexrims wheel set the other day. there was already a 11-28, 8-speed cassette on it. based on your answers, i found this:

    http://www.ebay.com/itm/Shimano-105-...#ht_2270wt_956

    on ebay

    is that a fair price and will it work with what i've got?

    thanks!
    Last edited by meezy; 09-11-11 at 01:16 PM.

  11. #11
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    right now i have some crappy derailleur mounted that only accesses 6 of the 8 gears. i figure i'll upgrade derailleurs first, see how the bike rides, then proceed to the crank and freewheel upgrades you guys have given me.

  12. #12
    Senior Member due ruote's Avatar
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    Quote Originally Posted by meezy View Post
    i bought an alexrims wheel set the other day. there was already a 12-28, 6-speed cassette on it. based on your answers, i found this:

    http://www.ebay.com/itm/Shimano-105-...#ht_2270wt_956

    on ebay

    is that a fair price and will it work with what i've got?

    thanks!
    http://velobase.com/ViewComponent.as...m=108&AbsPos=4

    Says it will go up to 28 teeth.

    [edit] actually I just noticed the comment that says it will handle 32t with a 38-48 chainring.
    Last edited by due ruote; 09-01-11 at 10:47 AM. Reason: more info

  13. #13
    Senior Member randyjawa's Avatar
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    What do you think of this single shifter?

    CampyVelox5SPDShifterFace.jpg CampyVelox5SPDGrouppo.jpg

    I have had this set kicking around for a long time, hoping to find a bicycle that it would be correct and work on. No such beast has come my way so far.

    I sort of like the rational behind what the OP is doing. I found this old five speed Torpado to be perfect, in third, most of the time, however; it was nice to be able to go to a higher gear, when needed...
    Learn how to find, restore and maintain vintage road bicycles at... MY "TEN SPEEDS"

  14. #14
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    hi i love the single shifter dunno about the derailleur. i've never seen a campy like that before. what model is it? how many gears can it accommodate? would i be able to assemble the 11-32 rear cogs that i'm now considering? i'd have to do some research. i don't guess you'd separate them, hey? what would you need for just the shifter, if so. if not, what would you need for the set?

    thanks,
    ~m

  15. #15
    Senior Member randyjawa's Avatar
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    what would you need for just the shifter, if so.
    It is best to conduct buying and selling through the assigned forum. You are welcome to email me through my website, should you wish. Or, do as I did, join the Bicycle Forum so that you can access all of the options available. I find it to be a useful resource.
    Learn how to find, restore and maintain vintage road bicycles at... MY "TEN SPEEDS"

  16. #16
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    randyjawa - i sent an email to mail@mytenspeeds.com regarding your parts.
    thanks!

  17. #17
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    the bike is finished... for now. here's the frankenbike that you all helped create... MMMMWWAAAHAHAHA... :

    http://s1016.photobucket.com/albums/...view=slideshow

    rear cassette: 11-28, 8spd
    shimano deore, 9spd derailleur

  18. #18
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    that rear derailleur is quite ugly and doesn't match the rest of the bike at all. i may remove it, take it apart, take a wire wheel to it to strip everything off, clear coat it, and then reinstall. i happened to catch a flat in manhattan and when i rolled her into a nearby bike shop that i frequent, i started talking about my plans... my man brought out this derailluer and i said what the hell. it does work brilliantly, though.

  19. #19
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    shimano shifter stem mount shifter, simplex downtube shifter - severely chopped up and modified into something of a steam-punk style cable guide, shimano derailleur, sugino crank... this this is all over the place.

  20. #20
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    That thing is sexy.

    Congratulations!
    *Recipient of the 2006 Time Magazine "Man Of The Year" Award*

  21. #21
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    Quote Originally Posted by meezy View Post
    that rear derailleur is quite ugly and doesn't match the rest of the bike at all. i may remove it, take it apart, take a wire wheel to it to strip everything off, clear coat it, and then reinstall. i happened to catch a flat in manhattan and when i rolled her into a nearby bike shop that i frequent, i started talking about my plans... my man brought out this derailluer and i said what the hell. it does work brilliantly, though.
    Nothing wrong with Deore- I'd just have gone for the 1986-ish version of it on that bike:

    As it is on my Black Chrome High Sierra:

    *Recipient of the 2006 Time Magazine "Man Of The Year" Award*

  22. #22
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    You made it yours. Love the saddle. Way to go!

  23. #23
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    Quote Originally Posted by The Golden Boy View Post
    That thing is sexy.

    Congratulations!
    thanks, man!

  24. #24
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    Quote Originally Posted by notenoughdaylig View Post
    You made it yours. Love the saddle. Way to go!
    thanks! it was an ebay purchase, shipped from paris. $60 - incl shipping!

  25. #25
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    Quote Originally Posted by The Golden Boy View Post
    Nothing wrong with Deore- I'd just have gone for the 1986-ish version of it on that bike:

    As it is on my Black Chrome High Sierra:

    i like yours WAY better - i totally would have preferred yours - but - like i said... i was only there cuz i caught a flat, dude pulled out what he had laying around that he thought would work, and i said what the hell.
    Last edited by meezy; 09-11-11 at 12:13 PM.

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