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  1. #1
    Senior Member mazdaspeed's Avatar
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    What kind of cassette/freewheel can I stick on my hub?

    I have a 1986 suntour sprint hub that has a 6 speed freewheel. The whole thing just shifts and runs like crap. I want to stick a shimano 7 speed cassette on it if possible. Can I do it?

  2. #2
    slow as I ever was Ex Pres's Avatar
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    No cassettes, freewheels only. 6 or 7 speed w/o respacing the axle. Find a Shimano style (twist-tooth) one.
    72 special CNC ___________ 72 Frejus (ala Legnano) __73 Holdsworth Record
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  3. #3
    Senior Member mazdaspeed's Avatar
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    Quote Originally Posted by Bob Barker View Post
    No cassettes, freewheels only. 6 or 7 speed. Find a Shimano style (twist-tooth) one.
    Any shimano 7 speed freewheel should work?

  4. #4
    slow as I ever was Ex Pres's Avatar
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    yes
    72 special CNC ___________ 72 Frejus (ala Legnano) __73 Holdsworth Record
    78 Raleigh Professional_____ 80 Ranson_____________ 80 unknown French (SS)
    82 Peugeot PXN10_________83 Trek 620 (nee 600)____ 85 Gianni Motta
    85 Trek 560______________88 Guerciotti GLX
    90 Miele Gara_____________02 Casati Dardo (g/blue)__02 Casati Dardo (y/blk)
    03 Casati Dardo___________08 BF IRO (fixed)________10 Vassago Fisticuff (IGH)

  5. #5
    Senior Member mazdaspeed's Avatar
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    Thanks for the quick reply. I don't suppose you'd know any good places to buy one would you? Also do you know if the 6 speed chain will work?

  6. #6
    slow as I ever was Ex Pres's Avatar
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    Nashbar carries a couple. And our favorite eBay. Maybe someone else has some other ideas.
    72 special CNC ___________ 72 Frejus (ala Legnano) __73 Holdsworth Record
    78 Raleigh Professional_____ 80 Ranson_____________ 80 unknown French (SS)
    82 Peugeot PXN10_________83 Trek 620 (nee 600)____ 85 Gianni Motta
    85 Trek 560______________88 Guerciotti GLX
    90 Miele Gara_____________02 Casati Dardo (g/blue)__02 Casati Dardo (y/blk)
    03 Casati Dardo___________08 BF IRO (fixed)________10 Vassago Fisticuff (IGH)

  7. #7
    Senior Member mazdaspeed's Avatar
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    Alright this is good news. I have a SIS 7sp shifter from a 1992 bridgestone so that should be a gigantic improvement from what I'm using.

  8. #8
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    Any Shimano freewheel will fit your wheel but not all of them will work with your rear derailler. Some Shimano freewheels come with a 34 tooth big cog and unless you have a MTB style rear derailler, your derailler won't clear that big of a cog. From what I've seen, 28 teeth is about as large as you'd want to use with a standard road rear derailler.

    Best selection I've found of multi-speed freewheels is here: http://www.niagaracycle.com/index.ph...sort=2a&page=1

  9. #9
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    If your current 6-speed chain is the older "wide" chain it won't work well. You need an 8-speed chain which are the same width as 7-speed chains.

    Since you are getting a new freewheel, a new chain is almost a necessity even if the width of the old one was correct.
    Last edited by HillRider; 09-27-08 at 08:09 PM.

  10. #10
    Senior Member mazdaspeed's Avatar
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    Yeah, I ordered a 14-28 and a new sram chain. Should be much better than what I have

  11. #11
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    great prices at niagra-- thanks joejack

  12. #12
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    Quote Originally Posted by scotucb View Post
    great prices at niagra-- thanks joejack
    You're welcome. I just found the website a few weeks ago. They seem to have a great selection and their prices are some of the lowest around. My first order should be arriving soon.

  13. #13
    "Purgatory Central" Wino Ryder's Avatar
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    Quote Originally Posted by mazdaspeed View Post
    Yeah, I ordered a 14-28 and a new sram chain. Should be much better than what I have


    Good for you. I just swapped out my old 6-speed freewheel on my '85 Centurian for a 14-28 7-speed freewheel and it worked perfectly. Easiest conversion I ever made, and my factory Shimano 600 friction shifters worked just fine too.

    Now I have a 7-speed bike and it cost me 20 bucks.
    ~ "I like the way the brake cables come out of the top of the levers and loop around to the brake calipers!...I like those downtube shifters too!...No no no, don't take 'em off, don't take 'em off,...leave 'em on, leave 'em on! - Thats right baby!!

    ~BF - Steel Club Member #00051

  14. #14
    Great State of Varmint Panthers007's Avatar
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    Regards chains - depending on where you buy from, a chain may say 6, 7, 8 speed chain. Or 5 -8 spd. chain. It's all the same article and will work with 5's to 8's. Once you install a 9spd freewheel - then you need a specific chain.

    As for many derailleurs, such as Shimano, saying Largest Cog - 27, this means in their group of components with the same name as the derailleur you just got. Example: Ultegra derailleur says 27 max. cog. The Ultegra freewheel is 27 tooth. But the Ultegra derailleur will easily handle a 28. No problems there - so don't believe the Max. Cog routine from the manufacturer.
    How do you keep an idiot in suspense?

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