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Old 02-27-08, 12:01 PM   #1
Chuck G
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Threaded rigid disc MTB fork

I have a 1988 Nishiki hardtail rigid fork MTB. It has a threaded fork, I assume 1".

Does anyone make a compatible rigid fork with disc brake mounts?
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Old 02-27-08, 12:26 PM   #2
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finding a 1" fork with disc mounts may prove to be hard/ nearly imposible.

Have you thought of having a disc mount welded onto your current fork? (assuming its steel)
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Old 02-27-08, 12:45 PM   #3
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finding a 1" fork with disc mounts may prove to be hard/ nearly imposible.

Have you thought of having a disc mount welded onto your current fork? (assuming its steel)
No I haven't thought of that. The bike has a 4130 chro-moly frame, so in theory it sounds do-able.
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Old 02-27-08, 02:19 PM   #4
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Tange makes one. I think Dimension does as well. They will have canti mounts and a disc tab.
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Old 02-27-08, 02:30 PM   #5
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Are you sure the bike is worth a disc upgrade?

By the time you purchase the brakes, the fork and maybe some labor if you can't do the work yourself, you are pretty close to the price of a new entry-level bike with discs front and rear, suspension fork, aluminum frame, new modern drivetrain, etc.
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Old 02-27-08, 03:05 PM   #6
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By the time you purchase the brakes, the fork and maybe some labor....
And disc-compatible hubs or wheels.
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Old 02-27-08, 03:43 PM   #7
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Tange makes one. I think Dimension does as well. They will have canti mounts and a disc tab.
The disc tab version from Tange and Dimension only come in 1 1/8" threadless. I already looked. I have only found one fork 1" fork with disc tabs but it is threadless and not a MTB or Road fork. It is a triple tree chopper fork -very heavy. PartyTime by 3G http://www.3gbikes.com/components/party_time_fork.html
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Old 02-27-08, 05:39 PM   #8
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Indeed. I was thinking of 700c forks. Then I realized I didn't read your initial post . . .
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Old 02-27-08, 06:27 PM   #9
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Are you sure the bike is worth a disc upgrade?

By the time you purchase the brakes, the fork and maybe some labor if you can't do the work yourself, you are pretty close to the price of a new entry-level bike with discs front and rear, suspension fork, aluminum frame, new modern drivetrain, etc.
Maybe, maybe not. But I was only thinking about adding a disc brake to the front wheel, so all I think need is:

disc-compatible fork
probably a new headset and labor to install
one brake
front wheel

I don't necessarily want an Alu MTB with a suspension fork. In 20 years I've never taken this bike on mountain bike trails, I used it for commuting to college and now to tow my kids in a Burley trailer. The 20 year old Deore parts on my MTB are probably as durable or better than the cheap stuff I see on new $400-500 MTBs.

I basically caught a dose of new bike fever again this year, the Novara Buzz has caught my eye for a while (rigid fork urban hardtail with discs), then I think about building up a Nashbar MTB frame or a Karate Monkey with a rigid fork. Then I think how much cheaper it would be to spruce up my old MTB - like adding a disc brake up front, so I start looking for parts prices and I can't find a threaded rigid disc MTB fork.

Which brings back me to my original post...

Thanks for all the replies.
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Old 02-27-08, 08:39 PM   #10
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Maybe, maybe not... Which brings back me to my original post...

Thanks for all the replies.
Fair enough, just wanted to put that out there and maybe save you a few bucks.

I took a look through our largest distributor's catalog today and didn't see a fork meeting your criteria. Unfortunately the 1" headset/rigid fork and disc brake eras don't coincide. Thanks to the retro singlespeed movement, there's a ton of 1-1/8" rigid forks with disc tabs. Are you sure it's a 1" steerer? If so, your best bet will be to find a local welder, preferably one familiar with the ISO specs for placing a disc tab correctly. If your fork is chromoly and also has the "lawyer tabs" to retain the wheel even if the QR lever is flipped open, then it's appropriate. If it's mild steel or lacks the tabs, buy a new 1" chromoly fork that has them and take it to your welder. This may also be a good time to switch to threadless.
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