1994 Epic Chainring BCD?
05-07-19 | 09:48 AM
#1
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From: Salem Oregon
Bikes: 2019 Trek Stash 7, 1994 Specialized Epic 1986 Diamondback Ascent 1996 Klein Pulse Comp, 2006 Specialized Sequoia Elite
1994 Epic Chainring BCD?
How do I figure out the front chainring BCD on my 1994 Specialized Epic? I've been thinking about replacing the 42 tooth chainring with a 39.
I can get a new 39 tooth Sora chainring with a 110 BCD for under $17. The Sora is for a 9 speed chain, but my bike is an 8 speed. Should it still work?
I can get a new 39 tooth Sora chainring with a 110 BCD for under $17. The Sora is for a 9 speed chain, but my bike is an 8 speed. Should it still work?
05-07-19 | 11:01 AM
#3
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From: Llano Estacado
Bikes: old clunker
How do I figure out the front chainring BCD on my 1994 Specialized Epic? I've been thinking about replacing the 42 tooth chainring with a 39.
I can get a new 39 tooth Sora chainring with a 110 BCD for under $17. The Sora is for a 9 speed chain, but my bike is an 8 speed. Should it still work?
I can get a new 39 tooth Sora chainring with a 110 BCD for under $17. The Sora is for a 9 speed chain, but my bike is an 8 speed. Should it still work?
05-07-19 | 12:12 PM
#4
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Bikes: 2019 Trek Stash 7, 1994 Specialized Epic 1986 Diamondback Ascent 1996 Klein Pulse Comp, 2006 Specialized Sequoia Elite
05-07-19 | 12:44 PM
#5
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From: Salem Oregon
Bikes: 2019 Trek Stash 7, 1994 Specialized Epic 1986 Diamondback Ascent 1996 Klein Pulse Comp, 2006 Specialized Sequoia Elite
05-07-19 | 01:08 PM
#6
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
* a 41T has existed, but wouldn't help much if you found one.
05-08-19 | 08:00 AM
#8
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Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones
Or measure between the chainring holes and multiply by 1.701 for a 5 hole chainring. The Suntour cranks are listed in Brown's crib sheet
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Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
05-08-19 | 09:44 AM
#10
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From: Salem Oregon
Bikes: 2019 Trek Stash 7, 1994 Specialized Epic 1986 Diamondback Ascent 1996 Klein Pulse Comp, 2006 Specialized Sequoia Elite
I measured approximately 75 mm between bolts. 75 x 1.701 = 127.6. Is the Sora chainring compatible with this style of chainring? Thanks everybody!
(Looking at the first picture, I notice the large chainring has PCD 130 printed on it!
- Ugh!)
Last edited by mtnbud; 05-08-19 at 09:47 AM.
05-08-19 | 09:51 AM
#11
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
There ya go!
05-08-19 | 05:50 PM
#12
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From: Montreal, Quebec
How do I figure out the front chainring BCD on my 1994 Specialized Epic? I've been thinking about replacing the 42 tooth chainring with a 39.
I can get a new 39 tooth Sora chainring with a 110 BCD for under $17. The Sora is for a 9 speed chain, but my bike is an 8 speed. Should it still work?
I can get a new 39 tooth Sora chainring with a 110 BCD for under $17. The Sora is for a 9 speed chain, but my bike is an 8 speed. Should it still work?
05-09-19 | 09:49 AM
#13
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From: NW,Oregon Coast
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Yea Bike brand is just paint on the frame, Everything else is bought by the factory from other companies..
if the component part order is big enough , the supplier may put the brand name of the customer on it...
if the component part order is big enough , the supplier may put the brand name of the customer on it...
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