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  1. #1
    Bike Junkie roccobike's Avatar
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    Suntour same as Sun Race????

    Here's my opportunity. I have a set of Suntour 7 speed, downtube index shifters, but no matching freewheel and I've read that Suntour 7 sp. is not the identical spacing as Shimano.
    A couple months ago, my bike flipping buddy hands me a bunch of left over parts including three MTB rear wheels. I finally got around to looking at them, and one of them has a "Sun Race", 7 speed freewheel. However, instead of stating it was manufactured by Maeda Industries, it says "Roots". It requires a double prong removal tool just like Suntour. Did I get lucky and come across a seven speed Suntour compatible freewheel or is this just another Shimano compatible freewheel. If it is Suntour equivalent, I will mount it on my Fuji Team and redish the rim. But I don't want to go through that effort if it's not the same.
    Any help is greatly appreciated.
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  2. #2
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    For what its worth Sun Tour 7 speeds will index on Sachs freewheels. Roger

  3. #3
    Seņor Member USAZorro's Avatar
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    I don't believe Sun Race is what's left of SunTour. Pretty sure they're different companies, but have no idea about the compatibility.
    The search for inner peace continues...

  4. #4
    www.theheadbadge.com cudak888's Avatar
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    Two different companies. Sun Race components are usually cheap stuff from Taiwan.

    Most of their 7-speed FW's are Shimano-index compatible though - check to see if the freewheel is new enough to have ramping on it. If it does, you should be home free.

    Take care,

    -Kurt

  5. #5
    Bike Junkie roccobike's Avatar
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    Thanks for all the good input. Kurt, you're right, it's attached to a really low end rim so it's certainly not high end stuff.
    USAZorro, Unfortunately, I think you're right, but I had to ask.
    rhenning, I did not know that, but I do now. Hello, Ebay!
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  6. #6
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    Quote Originally Posted by roccobike View Post
    Here's my opportunity. I have a set of Suntour 7 speed, downtube index shifters, but no matching freewheel and I've read that Suntour 7 sp. is not the identical spacing as Shimano.
    A couple months ago, my bike flipping buddy hands me a bunch of left over parts including three MTB rear wheels. I finally got around to looking at them, and one of them has a "Sun Race", 7 speed freewheel. However, instead of stating it was manufactured by Maeda Industries, it says "Roots". It requires a double prong removal tool just like Suntour. Did I get lucky and come across a seven speed Suntour compatible freewheel or is this just another Shimano compatible freewheel. If it is Suntour equivalent, I will mount it on my Fuji Team and redish the rim. But I don't want to go through that effort if it's not the same.
    Any help is greatly appreciated.
    Suntour (standard, not 'Ultra') 6 speed cog spacing and Shimano 6 speed cog spacing are the same.

    So a Suntour 6 speed shifter AND Suntour (Accushift) rear derailleur will index a Shimano 6 speed freewheel just fine. And vice versa.

    Suntour 7 speed center to center cog spacing is 5.3mm, 5.3mm, 4.8mm, 4.88mm, 4.8mm, 4.8mm.

    Shimano 7 speed center to center cog spacing is 5.0mm across all intervals.

    Suntour 7 speed shifters with Suntour Accushift rear derailleurs will NOT cleanly and reliably index a Shimano 7 speed freewheel or cassette. Repeat: cleanly and reliably And vice versa.

    Suntour Accushift six and seven speed freewheels ALL require 4 prong removal tool. All day long.

    Here is a good Suntour Accushift catalog reference
    http://www.wooljersey.com/gallery/v/...slideshow.html

    I run Suntour 7 speed accushift shifters and a suntour accushift rear derailleur with a custom spaced Hyperglide cassette built from a Shimano XT 8 speed cassette. Its center to center spacing is 5.3mm, 5.3mm, 4.8mm, 4.8mm, 4.8mm, 4.8mm. It indexes perfectly. And with the Hyperglide ramped cogs, I get the best of both worlds.

  7. #7
    Death fork? Naaaah!! top506's Avatar
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    Quote Originally Posted by cudak888 View Post
    Two different companies. Sun Race components are usually cheap stuff from Taiwan.
    Inexpensive rather than cheap; it gives good value for the money.
    I never saw a Sun Race freewheel with a two-prong hub though.
    Top
    You know it's going to be a good day when the stem and seatpost come right out.

  8. #8
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    ...and one more case that could prove useful to the OP:

    Sheldon Brown reports that Suntour 6 speed shifters (not the Suntour alpha 3000 shifters, its assumed) mated with a Shimano SIS rear derailleur will index a Shimano SIS 7 speed freewheel or cassette.

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