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Old 08-19-14, 07:25 AM   #3426
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Originally Posted by ksryder View Post
Not quite a MTB but my '94 Trek 750 has a 42/34/24 triple which I intend to swap out for more road-like gears. Unfortunately it's 96 BCD (I just measured to be sure) and aftermarket chainrings don't exist as far as I can tell. I plan to make this a gravel/winter bike with drop bars so I'll probably go with a compact double so I can still attack the steeper hills on my local gravel roads.

Anyone else dealt with the 96 BCD issue?
I know I some for sale somewhere recently... I'll try to remember where for you.
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Old 08-19-14, 07:37 AM   #3427
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Originally Posted by ksryder View Post
Not quite a MTB but my '94 Trek 750 has a 42/34/24 triple which I intend to swap out for more road-like gears. Unfortunately it's 96 BCD (I just measured to be sure) and aftermarket chainrings don't exist as far as I can tell. I plan to make this a gravel/winter bike with drop bars so I'll probably go with a compact double so I can still attack the steeper hills on my local gravel roads.

Anyone else dealt with the 96 BCD issue?
The crankset on my MTB had all 64mm BCD rather than the usual 64/104, and they were riveted. I had to replace the whole thing when the inner ring wore out. You might look at a hybrid triple which is basically the same as a mountain triple but all the rings are about four teeth bigger (48-38-28 or thereabouts depending on brand). Amazon link
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Old 08-21-14, 05:48 AM   #3428
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Originally Posted by ksryder View Post
Not quite a MTB but my '94 Trek 750 has a 42/34/24 triple which I intend to swap out for more road-like gears. Unfortunately it's 96 BCD (I just measured to be sure) and aftermarket chainrings don't exist as far as I can tell. I plan to make this a gravel/winter bike with drop bars so I'll probably go with a compact double so I can still attack the steeper hills on my local gravel roads.

Anyone else dealt with the 96 BCD issue?
94 bcd is "compact" mountain, common in the mid 90s. You can find new rings on ebay Vuelta SE Flat 94mm BCD 5 Arm Compact MTB Chainring | eBay
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Old 08-21-14, 07:32 AM   #3429
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94 bcd is "compact" mountain, common in the mid 90s. You can find new rings on ebay Vuelta SE Flat 94mm BCD 5 Arm Compact MTB Chainring | eBay
Just built up a compact triple (Shimano LX) for my Kuwahara... I used race Face rings for the middle and outer and a 20 tooth Shimano for the granny.

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Old 08-21-14, 01:01 PM   #3430
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The crankset on my MTB had all 64mm BCD rather than the usual 64/104, and they were riveted. I had to replace the whole thing when the inner ring wore out. You might look at a hybrid triple which is basically the same as a mountain triple but all the rings are about four teeth bigger (48-38-28 or thereabouts depending on brand). Amazon link
My 1995 Trek 730 also had a riveted crankset (Alivio...not bottom of the barrel) would require the whole thing to be replaced.
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Old 08-21-14, 01:26 PM   #3431
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94 bcd is "compact" mountain, common in the mid 90s. You can find new rings on ebay Vuelta SE Flat 94mm BCD 5 Arm Compact MTB Chainring | eBay
Did a little more research, apparently it's actually a 95 bcd. (My decimal points were slightly off.)

For one year, Shimano STX was made in a 95 bcd size. That year was 1994. That happens to be the year of my bike.

I found a spec sheet (in german or something) that shows the 95 bcd.

For my purposes, I want a higher tooth big ring, probably at least 50, so I'll just find a compact double when I get ready to mess with it. Sounds cheaper and easier. Maybe this info will help someone else.

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File Type: jpg 1994 Shimano STX specs FC-MC31-CH_1994.jpg (97.1 KB, 34 views)
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Old 08-21-14, 02:40 PM   #3432
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superbe!
I was riding this.



It's a purpose built big wheeled do it all bike for drop bar. The top tube is very short for a bike this size. I would have made it 1cm longer and shortened the headtube and sloped the top tube if I were doing this again.
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Old 08-21-14, 11:59 PM   #3433
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Originally Posted by ksryder View Post
Did a little more research, apparently it's actually a 95 bcd. (My decimal points were slightly off.)

For one year, Shimano STX was made in a 95 bcd size. That year was 1994. That happens to be the year of my bike.

I found a spec sheet (in german or something) that shows the 95 bcd.

For my purposes, I want a higher tooth big ring, probably at least 50, so I'll just find a compact double when I get ready to mess with it. Sounds cheaper and easier. Maybe this info will help someone else.

wow that is odd..
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Old 08-24-14, 09:12 PM   #3434
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I've been reading through this thread, for a while, and I'm only about halfway through. I built my first drop-bar mountain bike back in 1994, and I've ridden dropped off and on, since. Right now, I don't ride anything with straight bars. Every bike in my stable has mustache bars, flipped Albatross bars, or something similar.

Last night, however, I built up a 1992 Trek 950, with a Midge on it, for an upcoming vintage bike assault on Webster's Pass.




Story here, if you want to read it:

Two Wheels - Six Strings: 1992 Trek 950 Drop-Bar Conversion
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File Type: jpg pic1.jpg (75.6 KB, 179 views)

Last edited by interceptorjg; 08-24-14 at 09:26 PM.
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Old 08-24-14, 09:21 PM   #3435
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I've been reading through this thread, for a while, and I'm only about halfway through. I built my first drop-bar mountain bike back in 1994, and I've ridden dropped off and on, since. Right now, I don't ride anything with straight bars. Every bike in my stable has mustache bars, flipped Albatross bars, or something similar.

Last night, however, I built up a 1992 Trek 950, with a Midge on it, for an upcoming vintage bike assault on Webster's Pass.

http://4.bp.blogspot.com/-3lcQ4e_xBO...0/DSCN1159.JPG

Story here, if you want to read it:

Two Wheels - Six Strings: 1992 Trek 950 Drop-Bar Conversion
i*jg,
Is that a Brooks leather saddle?
Nice build, like everything about it!
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Old 08-24-14, 09:21 PM   #3436
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Originally Posted by interceptorjg View Post
I've been reading through this thread, for a while, and I'm only about halfway through. I built my first drop-bar mountain bike back in 1994, and I've ridden dropped off and on, since. Right now, I don't ride anything with straight bars. Every bike in my stable has mustache bars, flipped Albatross bars, or something similar.

Last night, however, I built up a 1992 Trek 950, with a Midge on it, for an upcoming vintage bike assault on Webster's Pass.

http://4.bp.blogspot.com/-3lcQ4e_xBO...0/DSCN1159.JPG

Story here, if you want to read it:

Two Wheels - Six Strings: 1992 Trek 950 Drop-Bar Conversion
Like the bike, not so sure about the brake levers though. They look a bit naked. You should do a ride thread on your assault on Websters pass on vintage bike . . .
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Old 08-24-14, 10:15 PM   #3437
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you always set the bar up high.
excellente!
Helps with steep descents...

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Old 08-25-14, 01:12 AM   #3438
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Like the bike, not so sure about the brake levers though. They look a bit naked. You should do a ride thread on your assault on Websters pass on vintage bike . . .
Love the left lever those levers rock Diacompe with barrel adjusters, not everyone's cup of tea, they are great on vintage 10 speeds though. Nice build.

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Old 08-25-14, 07:39 AM   #3439
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i*jg,
Is that a Brooks leather saddle?
Nice build, like everything about it!
It's a Gyes/Cardiff/Origin8/VeloOrange (the same Taiwanese factory makes all of these, plus other "store-brands", I'm sure). About half the price of a comparable Brooks, and just as comfy.
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Old 08-25-14, 07:41 AM   #3440
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Like the bike, not so sure about the brake levers though. They look a bit naked. You should do a ride thread on your assault on Websters pass on vintage bike . . .
I didn't bother with hoods, since I'm setting this bike up to ride 90% in the drops. One less thing to destroy in a crash.

I will do that ride thread. I always enjoy reading about other people's adventures, hopefully someone will find mine interesting.
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Old 08-25-14, 07:48 AM   #3441
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Is anyone changing the gearing on these conversions to something more road-like, or are you all leaving the gears as-is?
I've done both, depending on intended usage. My 650b conversion, Mustache-bar MB-1 has a Campy Racing Triple, and 100mm slicks on it. It is intended for 90% road use. My fixed gear 88 RockHopper (also a Mustache style bar) is geared at a little over 2:1, for 50/50 road and mountain, and my 92 Trek 950 (Midge bar) has the stock gearing, for 90% off-road use.
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Old 08-25-14, 11:27 AM   #3442
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I didn't bother with hoods, since I'm setting this bike up to ride 90% in the drops. One less thing to destroy in a crash.

I will do that ride thread. I always enjoy reading about other people's adventures, hopefully someone will find mine interesting.
Wouldn't hoods at least protect the brakes in a crash and keep dirt out?
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Old 08-25-14, 01:06 PM   #3443
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I made a bit progress on my ritchey outback this weekend.







I'm still waiting on a front derailluer and will have to get cables, bar tape, and a chain next time I'm at my lbs but I should be riding this soon.
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Old 08-25-14, 02:19 PM   #3444
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Wouldn't hoods at least protect the brakes in a crash and keep dirt out?
Not in my experience. The hoods don't seal the lever, and they tend to tear, pretty easily, if you crash in the rocks (usually my luck). The tape job that I applied actually lends a bit of cushioning to the lever, for my hands, but I don't use that position a lot, offroad. If the levers had hoods on them, I would have left them. But, they didn't, and I don't want to spend the money.

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Old 08-27-14, 12:25 PM   #3445
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I've been reading through this thread, for a while, and I'm only about halfway through. I built my first drop-bar mountain bike back in 1994, and I've ridden dropped off and on, since. Right now, I don't ride anything with straight bars. Every bike in my stable has mustache bars, flipped Albatross bars, or something similar.

Last night, however, I built up a 1992 Trek 950, with a Midge on it, for an upcoming vintage bike assault on Webster's Pass.




Story here, if you want to read it:

Two Wheels - Six Strings: 1992 Trek 950 Drop-Bar Conversion
I've been drooling over the bikes in this thread, but just wanted to say this one is epecially great, IMO. A Midge bar with bar-end shifters is exactly what I'd like to do to my MTB. Love the old school brake levers, too.

Thanks to all for the continued inspiration in here.
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Old 08-28-14, 08:51 AM   #3446
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Thanks for the kind words, Squeeze.

I always prefer the non-aero levers, with bar end shifters, for some reason. Maybe it's because you can see the shifter cables, so I want to see the brake cables, too, to balance things out...
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Old 08-28-14, 11:22 AM   #3447
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In contrast to the Moulden... my Cascade all rigged for some touring.

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Old 08-28-14, 02:05 PM   #3448
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In contrast to the Moulden... my Cascade all rigged for some touring.

Complete with Touring Cat!
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Old 08-28-14, 02:09 PM   #3449
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Complete with Touring Cat!
She is my shop supervisor... as such she has to make sure everything is done up right.

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Old 08-28-14, 03:29 PM   #3450
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Complete with Touring Cat!
Judging by the size of that cat, it's more like campground watchcat, hehe.,,,,BD
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