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Beach Cruisers Do you love balloon tires and fenders? Do you love riding the simplicity of a single gear and coaster brakes or a single gear cluster? Do you love the classic curves in the tubing of a cruiser that takes you back to the 1950's and 1960's, stylistically? Here's your home! Welcome to the Beach Cruisers and Cruisers forum!

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Old 12-28-16, 10:47 AM   #1
MrWasabi
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Cruiser chainring changes?

I've got a Firmstrong Urban Man single speed with a 40T chainring. I need to check what's on back...not sure. I'm looking for a little more top speed and less pedaling. Would going up to a 44-46T up front be too much? Should I concentrate on changing the back sprocket to something smaller instead? I live in Florida and this is for 99% riding around the neighborhood on flat pavement.

Thanks for any input.
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Old 12-28-16, 12:08 PM   #2
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Your Pick .. 3 speeds use a 13t cogs as Smallest..

This one piece crank? You might search for an adapter that lets you Mount a 5 bolt chainring.. *

Hit the search engines..

* I used one years ago to Lathe turn off teeth for chain-guard discs from old Chainrings it was 110 BCD 5 bolt.
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Old 01-06-17, 11:46 AM   #3
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Wow, 40T is quite small. See what your back one is, one tooth smaller can make quite a difference. I run 44T / 17T but I ride pretty aggressively. I can "cruise' 16-17 mph fairly comfortably depending on terrain and winds.
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Old 01-10-17, 01:20 PM   #4
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I usually run 46 X 16 on my cruisers which equates to about 76 g.i. with big fat 2.35" balloon tires. That's good for maintaining ~20mph at a cadence of ~90rpm yet is decent enough to climb hills in my area.


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Originally Posted by fietsbob View Post
...You might search for an adapter that lets you Mount a 5 bolt chainring...
SunLite should still sell those. I've had one in my parts bin for over a decade... no idea why I even have it.
https://www.amazon.com/Sunlite-BB-Co.../dp/B00TU4NYOQ

Last edited by BassNotBass; 01-10-17 at 01:23 PM.
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Old 01-12-17, 12:34 PM   #5
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Originally Posted by BassNotBass View Post
I usually run 46 X 16 on my cruisers which equates to about 76 g.i. with big fat 2.35" balloon tires. That's good for maintaining ~20mph at a cadence of ~90rpm yet is decent enough to climb hills in my area.

Nice. 46/16 is pretty aggressive. You've got to have some legs to climb with that! I can do 20 comfortably if I'm in pretty good shape, 22 starts to get spinney. You should be able to hit 26-ish on that with a nice tail wind.


SunLite should still sell those. I've had one in my parts bin for over a decade... no idea why I even have it.
https://www.amazon.com/Sunlite-BB-Co.../dp/B00TU4NYOQ
I've been thinking of doing this conversion.
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Old 03-22-17, 08:10 PM   #6
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I usually run 46 X 16 on my cruisers which equates to about 76 g.i. with big fat 2.35" balloon tires. That's good for maintaining ~20mph at a cadence of ~90rpm yet is decent enough to climb hills in my area.
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Old 03-23-17, 09:59 AM   #7
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Any Walmart calculator can figure your ratios. Wheel revolutions per crank (chainring) revolutions.


46 - 16 = 2.88 (pretty high)
44 - 17 = 2.59 (fairly normal)
44 - 18 = 2.44 (normal)
40 - 16 = 2.50 So if MrWasabi had a 16 T rear he would be fairly normal
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Old 03-25-17, 01:18 PM   #8
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My huffy's are 44x18 which is fine for my area. If the hill is too much I walk up it.
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Old 03-25-17, 01:47 PM   #9
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I had an Open Road (AMF sort for thing, Western Flyerish) that I thought was a dog, sold it to a friend, he changed the bearings....ZOOOOM.


DANG, that could have been ME.
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