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  1. #1
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    new to biking lots of questions

    So i just recently bought a used road bike and I have come acrossed quite a few problems. first my front wheel is untrue and the bike shop said that it is too fatigued to be worth truing. Secondly i just noticed the other day when i took my back wheel off that i can feel a grinding when i spin it. maybe something wrong with the hub? It also spins noticably for a shorter amount of time then the front wheel. Also looking at my cassette i noticed the teeth on each gear look twisted. However i have no idea what to get to replace these items cheaply. I was thinking a new wheelset but i have 7spd index shifting and most say they are only 8,9,10 compatible. is it possible my 105 dt shifters can friction shift a 9 spd? Or should i just try to find an old 7spd wheelset to replace mine? Im just kinda confused on my options for replacing and or upgrading i guess... any help would be great
    Last edited by Randy5040; 09-06-09 at 10:23 PM.

  2. #2
    Insane Bicycle Mechanic Jeff Wills's Avatar
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    Quote Originally Posted by Randy5040 View Post
    So i just recently bought a used road bike and I have come acrossed quite a few problems. first my front wheel is untrue and the bike shop said that it is too fatigued to be worth truing. Secondly i just noticed the other day when i took my back wheel off that i can feel a grinding when i spin it. maybe something wrong with the hub? It also spins noticably for a shorter amount of time then the front wheel. Also looking at my cassette i noticed the teeth on each gear look twisted. However i have no idea what to get to replace these items cheaply. I was thinking a new wheelset but i have 7spd index shifting and most say they are only 8,9,10 compatible. is it possible my 105 dt shifters can tension shift a 9 spd? Or should i just try to find an old 7spd wheelset to replace mine? Im just kinda confused on my options for replacing and or upgrading i guess... any help would be great
    1. If the front wheel is not true and has been ridden with undertensioned spokes, then, yes, it's probably not worth saving.
    2. If the rear hub is grinding when you turn the axle, then it should be (at very least) overhauled. Grinding in the bearings is a bad sign, but it may be salvageable. Only a good mechanic can tell.
    3. Twisted teeth on the cogs is a feature, not a bug. They make shifting smoother.
    4. You can put some 7-speed cog sets (aka cassettes) on 8/9/10 speed wheels. There's a spacer made for this.
    Jeff Wills

    All my bikes.

  3. #3
    Bianchi Goddess Bianchigirll's Avatar
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    I agree with JW. as you are new to the sport, I strongly recomend you take this bike in for at the very least a tuneup and rear hub to be overhauled. now I know there is alot to be said for 'doing it yourself' however. as you are new to biking and have a used bike a seasoned mechanic might spot something you might miss. also we (everyone at BF) want you to enjoy your new bike and all the sport has to offer. walking home because you did not tighten something is not fun.
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo SOLd, '86 Volpe, '89 Axis SOLD, '79 Mixte SOLD, '99 Mega Pro XL Ti SOLD, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe SOLD, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  4. #4
    Senior Member Retro Grouch's Avatar
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    I need more detailed information about the bike.

    The twist tooth freewheel leads me to think this might be an old, 27" wheel bike. At least 1 shop mechanic has said the front wheel is shot. The rear wheel almost surely needs new cones and bearings. If it is a 27" wheel bike, that's going to complicate the replacement issue. That's assuming that everything else is good and, at this point, I don't know that. Before I spent another dollar on this bike I'd want an evaluation of the whole bike. I suspect the cost effective approach might be to start over with a better used bike.

    Sorry.

  5. #5
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    I wouldn't throw in the towel just yet - it might be salvageable for not much $$$. You probably should get it looked over by someone in the know. It's just that alot of local bike stores poo-poo repair bikes that come in, trying to scare you into buying something new from them. You might post what city you're in, and see if a fellow forum member lives there and can give you some advice.

  6. #6
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    well i can try to get any information you would need to give a better evaluation. Ill just give all the info i can. The tires on the back and front both say 700x20c. Rim on the back is a Mavic MA 40 front is a rigida score 700c. Both have shimano 105 hubs. Cassette is shimano mf 5000 which i believe to be Sante. Sante front derailleur. Rx-100 Rear derailleur. Suntour superbe pro crank 52/43. also has sante brakes. I figured getting new wheels wouldnt be such a bad upgrade as i could always use them on another bike if I ended up scrapping the old bike. Not much else i know about the bike. its been painted over. was told it was cannondale. when i looked up serial number for cannondale bikes i believe it said it was a 1984. What i wanted to do was put forte titan wheels on it. since they are pretty cheap and ive heard they are pretty bulletproof. also i live in portland.

  7. #7
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    well i can try to get any information you would need to give a better evaluation. Ill just give all the info i can. The tires on the back and front both say 700x20c. Rim on the back is a Mavic MA 40 front is a rigida score 700c. Both have shimano 105 hubs. Cassette is shimano mf 5000 which i believe to be Sante. Sante front derailleur. Rx-100 Rear derailleur. Suntour superbe pro crank 52/43. also has sante brakes. I figured getting new wheels wouldnt be such a bad upgrade as i could always use them on another bike if I ended up scrapping the old bike. Not much else i know about the bike. its been painted over. was told it was cannondale. when i looked up serial number for cannondale bikes i believe it said it was a 1984. What i wanted to do was put forte titan wheels on it. since they are pretty cheap and ive heard they are pretty bulletproof.

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