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Many (many!) speed bicycles? (IGH+freewheel+etc.)

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Many (many!) speed bicycles? (IGH+freewheel+etc.)

Old 08-18-16, 01:45 PM
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corrado33
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Many (many!) speed bicycles? (IGH+freewheel+etc.)

I remember reading awhile back about a bike that had an astronomical number of gears due to the use of an IGH, a small freewheel, a front triple, and possibly a mid drive set of gears? It may have been on sheldon's site, but I can't seem to find it now. Anyone have the link?

For my actual question, how would you go about running both a freewheel AND an IGH? Not for any practical purpose mind you, but for fun. (Aka I have too much time on my hands.)

These types of drivetrains area called something special... mixed drive perhaps? I'm not sure.
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Old 08-18-16, 02:01 PM
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Here's an IGH that takes a cassette:
https://www.universalcycles.com/shop...&category=2713
With a 10 speed cassette and triple front crankset you could have 3x3x10=90 gears

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Old 08-18-16, 02:03 PM
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Originally Posted by Mr IGH View Post
Here's an IGH that takes a cassttee:
https://www.universalcycles.com/shop...&category=2713
With a 9 speed cassette and triple front crankset you could have 3x3x9=81 gears

Interesting, I assumed that this would only be possible with freewheels, but it seems that, for some reason, someone thought this device was a good idea.

What's the market for it anyway? If SRAM made it then there's gotta be money in it somewhere.
EDIT: Seems like they made it to compete with 3x systems. Eliminate the front derailleur but still have all the gears of a 3x. Interesting. Their left shifter controls the 3 speed IGH, the right shifter the derailleur.
Double EDIT: OR you can buy a single RH shifter that controls both. Interesting stuff...

Last edited by corrado33; 08-18-16 at 02:09 PM.
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Old 08-18-16, 02:35 PM
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sheldon brown noted it would be helpful on small wheel bikes and siturations where you could not put a derailler on
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Old 08-18-16, 02:55 PM
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On a hub like this, I would assume that the advantage would be that you would not need a front derailleur. Might be good for touring?
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Old 08-18-16, 03:51 PM
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Originally Posted by corrado33 View Post
I remember reading awhile back about a bike that had an astronomical number of gears due to the use of an IGH, a small freewheel, a front triple, and possibly a mid drive set of gears? It may have been on sheldon's site, but I can't seem to find it now. Anyone have the link?

For my actual question, how would you go about running both a freewheel AND an IGH? Not for any practical purpose mind you, but for fun. (Aka I have too much time on my hands.)

These types of drivetrains area called something special... mixed drive perhaps? I'm not sure.
I think it is called "excessive".

Here's Sheldon's 63 (3x7x3) speed bike article: My O.T.B. - Only The Best

"...like a dog's walking on his hind legs. It is not done well; but you are surprised to find it done at all." Samuel Johnson
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Old 08-18-16, 10:45 PM
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Originally Posted by corrado33 View Post
What's the market for it anyway? If SRAM made it then there's gotta be money in it somewhere.
EDIT: Seems like they made it to compete with 3x systems. Eliminate the front derailleur but still have all the gears of a 3x. Interesting. Their left shifter controls the 3 speed IGH, the right shifter the derailleur.
Double EDIT: OR you can buy a single RH shifter that controls both. Interesting stuff...
I've seen a number of recumbent trikes set up with 3x3x7 (8) (9)-speed set ups. Many of these use 20" drive wheels, so this creates a usable high gear. Low gears can go down to the single-digit gear-inch range, needed for older riders climbing steep slopes. Balance is no problem on a trike.
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Old 08-19-16, 06:38 AM
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The reality is that you get one gear lower and one gear higher. The rest is overlap.
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