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Ventura 1/2x1/8" and 1/2x3/32" chain
Ventura [1] has single speed chains that are
1/2x1/8", but also 1/2x3/32". If there isn't a marking, can you deduct the chain size from the width of the chainring and/or sprocket? Probably either chain will work, right? $ echo $(( 1/8.0 )) 0.125 $ echo $(( 3/32.0 )) 0.09375 [1] http://www.ventura-parts.com -- underground experts united http://user.it.uu.se/~embe8573 |
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#2
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Ventura 1/2x1/8" and 1/2x3/32" chain
On Friday, July 6, 2018 at 3:16:27 PM UTC-5, Emanuel Berg wrote:
Ventura [1] has single speed chains that are 1/2x1/8", but also 1/2x3/32". If there isn't a marking, can you deduct the chain size from the width of the chainring and/or sprocket? Probably either chain will work, right? $ echo $(( 1/8.0 )) 0.125 $ echo $(( 3/32.0 )) 0.09375 [1] http://www.ventura-parts.com -- underground experts united http://user.it.uu.se/~embe8573 1/8 inch 3.2 mm is fixed / freewheel single speed only. 3/32 inch 2.4 mm is derailuer wheel inside width. Some fixed / freewheel also use this size to allow switching. OUTSIDE width needs to be determined since it varies for each 6 to 11 gears. https://en.wikipedia.org/wiki/Bicycle_chain#Width |
#3
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Ventura 1/2x1/8" and 1/2x3/32" chain
mike.phone.schwab wrote:
1/8 inch 3.2 mm is fixed / freewheel single speed only. 3/32 inch 2.4 mm is derailuer wheel inside width. Some fixed / freewheel also use this size to allow switching. Okay, but what do the digits 3.2 mm and 2.4 mm indicate? -- underground experts united http://user.it.uu.se/~embe8573 |
#4
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Ventura 1/2x1/8" and 1/2x3/32" chain
On Sunday, July 8, 2018 at 9:58:47 AM UTC-5, Emanuel Berg wrote:
mike.phone.schwab wrote: 1/8 inch 3.2 mm is fixed / freewheel single speed only. 3/32 inch 2.4 mm is derailuer wheel inside width. Some fixed / freewheel also use this size to allow switching. Okay, but what do the digits 3.2 mm and 2.4 mm indicate? -- underground experts united http://user.it.uu.se/~embe8573 Those are the metric equivalent of the gap inside the chains. The outside width varies by 6, 7, 8, 9, 10, 10N, 10ND, 11 gears. |
#5
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Ventura 1/2x1/8" and 1/2x3/32" chain
Mike A Schwab wrote:
Those are the metric equivalent of the gap inside the chains. The outside width varies by 6, 7, 8, 9, 10, 10N, 10ND, 11 gears. Aha, here it is: Chains come in 3/32 in (2.4 mm), 1/8 in (3.2 mm), 5/32 in (4.0 mm), or 3/16 in (4.8 mm) roller widths, the internal width between the inner plates. 1/8 in (3.2 mm) chains are typically used on bikes with a single rear sprocket: those with coaster brakes, hub gears, fixed gears such as track bicycles, or BMX bikes. Chains with 3/32 in (2.4 mm) wide rollers are generally used on bikes with derailleurs such as racing, touring, and mountain bikes. Fixed sprockets and freewheels are also available in 3/32 in (2.4 mm) widths so fixed-gear and single-speed bikes can be set up to use the narrower and lighter 3/32 in (2.4 mm) chains. [1] [1] https://en.wikipedia.org/wiki/Bicycle_chain#Width -- underground experts united http://user.it.uu.se/~embe8573 |
#6
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Ventura 1/2x1/8" and 1/2x3/32" chain
Mike A Schwab wrote:
Those are the metric equivalent of the gap inside the chains. The outside width varies by 6, 7, 8, 9, 10, 10N, 10ND, 11 gears. Ah, seems to check out. The 1/2x1/8" notation is (plate length) x (roller width) with "roller width" = "gap inside the chains". $ units '1|8 in' mm * 3.175 / 0.31496063 $ units '3|32 in' mm * 2.38125 / 0.41994751 -- underground experts united http://user.it.uu.se/~embe8573 |
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