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Shimano ffs freewheel

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Shimano ffs freewheel

Old 03-26-23, 09:40 PM
  #1  
TLaurent 
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Shimano ffs freewheel

I have a couple tandems and find it difficult to find a willing stoker because most riders prefer to pedal at their own pace. I donít mind doing most of the work and have been searching for a solution to enable the stoker to coast while the the captain can continue pedaling. I even bought a set of foot rests to install for the stoker but finding a location to install them w/o obstructing the captainís heals has been a challenge. I recently discovered the Shimano FFS and think that this might be the solution that Iím looking for. One bike is a 70s Gitane tandem with an odd shaped BB so itís not a good candidate. The other is a Yakota Grizzley thatís likely ISO so the odds of finding an FFS to fit are better. Has anyone used this system?
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Old 04-17-23, 05:46 AM
  #2  
roytar
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I'm in the process of converting my wife's FFS based Schwinn world tourist to single speed coaster brakes. If you find out the world tourist FFS is compatible with your needs, I'll gladly send it to you.
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Old 04-17-23, 01:02 PM
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Originally Posted by roytar View Post
I'm in the process of converting my wife's FFS based Schwinn world tourist to single speed coaster brakes. If you find out the world tourist FFS is compatible with your needs, I'll gladly send it to you.
Thank you for offering! I have an adapter for Schwinn bottom brackets and would like to try. Please let me know what you would like for the FFS. Iím located in Saint Paul, MN. -Trent
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Old 04-18-23, 10:41 AM
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I pulled the cranks off but need the old style tool to remove the bottom bracket caps. Ordered it online should come in a couple of days. I want to make sure a standard BB will fit.
So it may be a few days....
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Old 04-20-23, 06:45 AM
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Sounds good. Some of those older BBs are difficult to remove. Good thing the BF has many knowledgeable members.
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Old 05-20-23, 08:52 AM
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Are you still interested? I finally completed the FFS to coaster brake conversion.
You can have the FFS for the cost of shipping.
I couldn't separate the chainrings from the BB axle. Some photos:




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Old 05-20-23, 09:48 AM
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Are you still interested? I finally completed the FFS to coaster brake conversion.
You can have the FFS for the cost of shipping.
I couldn't separate the chainrings from the BB axle. Some photos:




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Old 05-20-23, 12:21 PM
  #8  
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Ross bikes used these too . I actually think it's a good system for an around town bike. You can shift to a lower gear coasting up to a stop
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Old 05-20-23, 03:44 PM
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I don't know ... IPS has been a thing much more recently than FFS systems which (tmk) have never been offered on the Schwinn tandems of the day. I would like to see the 'math' of obtaining IPS this way vs something like a DaVinci or Santana system. To me, it's problematic that the rings cannot be removed because a standard 'crossover' system is not going to be possible (afaics). Two rings of the same size are going to be necessary on the drivetrain side of the bike. And the captains crank will need to match those sizes.
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Old 05-22-23, 05:31 AM
  #10  
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@roytar DM sent. Thank you!
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