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Is converting MTB to SS road, practical or possible?(4 posts)

Is converting MTB to SS road, practical or possible?TUT2222
May 29, 2003 6:01 PM
I have a Trek 830 Mountain Trek, basically collecting dust and spiderwebs in the garage. It is about 10 yrs old, but probably has less than a few hundred miles on it(don't ask). Would I be able to convert it to a single speed with a flip/flop, or freewheel type hub and road bars easily? It makes more sense to me than having to buy a new or used bike for the same purpose. I live in Florida, so needless to say, it's flat here.
re: Is converting MTB to SS road, practical or possible?ctisevn
May 29, 2003 6:27 PM
easy enough, especially because of its age. youve probably got a 1" threaded hs so just get a new road stem and some road bars with aero levers. the levers should work because youve probably got canti brakes. for the rear wheel, either remove the freewheel thats there if its a freewheel (rather than cassette) hub and replace with a bmx freewheel or if its a cassette hub get some spacers and a cog. or buy a new wheel with a flip flop. you might need a tensioner, if so get a singleator or my personal fave a soulcraft convert-or chop the derailer down if you dont want to buy a tensioner. you might not too, Ive seen a couple old treks singled without tensioners. try a couple gear combos and see what works. take off the middle and granny ring and get some track bolts for the cranks, throw on some specialized fatboy tires or some other 26" road tire and youre done, easy cheezy.
some issues...buffalosorrow
May 29, 2003 7:53 PM
typically with MTB to road conversions the top tube length becomes an issue, unless one happens to have the long torso to match.
What is the application? A cruiser? 26" wheel SS cyclocross? Street MTB? Fix or Free?
You have alot of options with bars, standard road, salsa bell lap's( they flare out at the bar ends), WTB dirt drops(ever more flared), moustache bars, MTB flats or rise and dont forget all your clip ons...bar ends and areo items.
I built up my girlfriend an Aegis MTB fixed/free with the replaceable drop outs to the track ones(from aegis), phil wood flip flop hubs, bonti and mavic rims, ritchey cross bite 1.4" tires, avid brakes and levers, flipped Kore stem and a kore flat bar. She mainly rides fixed, and swaps to free to take a lap with me a cyclocross race. She recieves tons of compliments and even more double takes..."thats a fixed MTB?" Its also quite fast.
7-speed or less?Humma Hah
May 30, 2003 6:22 AM
... Seven speed or less are usually freewheels. They generally screw off and you can screw on a singlespeed freewheel. A little wrenching to remove superfluous parts and a little spacerizing to achieve a good chainline, and you're singlespeed.

Horizontal dropouts are a definite plus, but it is possible to convert a bike with vertical dropouts. That usually requires either a tensioner or getting lucky with chainring/rear cog combinations that work out for your BB/axel spacing. sheldonbrown.com has the info on this.

Road bars: Might work, might not. Might takes some more parts swapping. There's a good chance the bike would never be comfortable with drops, as the geometry was intended for a more vertical seating position. Might work brilliantly with very short straight bars, risers, inverted risers, or slightly-dropped mustache bars.

26" decimal-size MTB rims accomodate 26 x 1.25 slicks just fine. You'll loose some ground clearance, so be aware of that when you practice pedaling thru turns.