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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

conversion question

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Old 02-10-08, 10:30 PM
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conversion question

so i got this fuji road bike from a scrap yard today. a little rust here and there
i want to convert it to fixed gear im concerned it might be a little too big, i think its 56cm the stand over is ok but thats the proper seat height.






should i spend the money on a new wheel set and brake cables possible crank set to convert or would it be worth the wait for the kilo tt?
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Old 02-10-08, 10:33 PM
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i think that could be a fun project. the cranks are sugino super mightys. pretty nice cranks back in the day.
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Old 02-10-08, 10:40 PM
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a new wheel set makes a huge difference on a fixed. i'd put money towards that. and if your going brakeless, i'd put some stronger bolts on that chainring. i don't understand what you mean thought about the height?
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Old 02-10-08, 10:45 PM
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im gonna ride a front break, my question with the height is like seat to frame ratio, like ussually bikes i see the seat post is higher, and mines kinda low so im wondering if the frame might be too big?
any suggestions on some good entry level wheelsets? this is my first fixed, thanks for any help!
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Old 02-10-08, 10:54 PM
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I don't understand whats up with the tall seat posts. If the stand over height of the bike is supposed to be less than an inch from your inseam and your leg is supposed to have a slight bend at the bottom of the pedal stroke when seated doesn't that mean the seat height should be the same as the distance of the pedal from the ground at the bottom of the stroke? Does that makes sense to anyone but me? If you have proper stand over height then how can you possibly need such a tall seat post?

I think your seat looks fine. Have fun with that bike.
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Old 02-10-08, 11:00 PM
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siq pal.
so when it gets down to it should i just invest money on a wheel set and convert that bike
or would it be better to get a kilo tt?
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Old 02-10-08, 11:08 PM
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If that bike is in good working order I would just slap one of those $100 wheel/tire/tube sets from bike island on there and start riding. You don't have to spend a lot to have a fun bike.
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Old 02-10-08, 11:27 PM
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Originally Posted by shasta
I don't understand whats up with the tall seat posts. If the stand over height of the bike is supposed to be less than an inch from your inseam and your leg is supposed to have a slight bend at the bottom of the pedal stroke when seated doesn't that mean the seat height should be the same as the distance of the pedal from the ground at the bottom of the stroke? Does that makes sense to anyone but me? If you have proper stand over height then how can you possibly need such a tall seat post?

I think your seat looks fine. Have fun with that bike.
Proper frame sizing has more to do with top tube length than with standover. I have one bike that has 6" of standover, while another has 1.5". The effective top tube length is the same for each, so they both fit fine. The amount of exposed seatpost is a moot point, so long as the seat can be positioned at the right height and setback.
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Old 02-10-08, 11:30 PM
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Originally Posted by shasta
If that bike is in good working order I would just slap one of those $100 wheel/tire/tube sets from bike island on there and start riding. You don't have to spend a lot to have a fun bike.
sounds good pal. thanks
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Old 02-10-08, 11:36 PM
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That bike is gorgeous. I would convert with a wheelset and use those cranks, but if you decide not to use those cranks, I will buy or trade them from you
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Old 02-11-08, 12:06 AM
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i just ordered a wheelset so hopefully ill be riding a fixed gear in a couple days! yah dude im defiantly using the cranks :]

https://bikeisland.com/cgi-bin/BKTK_S...ils&ProdID=548
so the chain ring is 49 tooth and the cog is 16 so thats 82 gear inches i think that might be a little much i wanna lower gear a little im thinking about getting a 17 tooth or 18. so do i need any tools besides
https://bikeisland.com/cgi-bin/BKTK_S...ils&ProdID=483

to change the cogs?

Last edited by gunther.paradis; 02-11-08 at 12:13 AM.
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Old 02-11-08, 12:17 AM
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what model fuji is this by the way? my first conversion was an 80's fuji, so they have a special place in my heart.
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Old 02-11-08, 12:30 AM
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You might need a chain whip. Make sure the cog you buy is 3/32 because I would imagine that chainring is 3/32. 49/18 would be a pretty sweet gearing I would say. You could also buy a different chainring if you so desired, though 49 is a decent size.
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Old 02-11-08, 12:33 AM
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that's a fantastic looking conversion bike! slightly ot, though: is that reflective goo on the rims? if so, that's an awesome idea.
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Old 02-11-08, 12:59 AM
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Pretty cool. Theres definitely potential. I'd say convert it, if you don't like it sell it and put the money towards the TT.
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Old 02-11-08, 11:12 AM
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Originally Posted by ThunderChunky
what model fuji is this by the way? my first conversion was an 80's fuji, so they have a special place in my heart.
its says its a mark 2 im pretty stoked on this find :]
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Old 02-11-08, 11:14 AM
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Originally Posted by frankstoneline
You might need a chain whip. Make sure the cog you buy is 3/32 because I would imagine that chainring is 3/32.
you can run a 1/8 chain and cog on a 3/32 chain ring. Its working fine for me.
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Old 02-11-08, 11:16 AM
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Originally Posted by frankstoneline
You might need a chain whip. Make sure the cog you buy is 3/32 because I would imagine that chainring is 3/32. 49/18 would be a pretty sweet gearing I would say. You could also buy a different chainring if you so desired, though 49 is a decent size.
so i got this wheelset. https://bikeisland.com/cgi-bin/BKTK_S...ils&ProdID=549

do i need to get a threaded cog like this : https://bikeisland.com/cgi-bin/BKTK_S...ils&ProdID=333

or one like this ? https://bikeisland.com/cgi-bin/BKTK_S...ils&ProdID=568
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Old 02-11-08, 11:18 AM
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Originally Posted by lhcommons
you can run a 1/8 chain and cog on a 3/32 chain ring. Its working fine for me.
im not sure how to tell if my chainring is 3/32 or 1/8?
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Old 02-11-08, 11:23 AM
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That wheelset comes with a 16t cog, though a pretty flimsy one (I have a wheelset from them). If you buy a new cog you need one like the first one, though it needs to be 3/32 for chain size, because your chainring is probably 3/32 as it comes off a road bike. No biggie. 3/32 vs 1/8 is just referring to the width of the chainring and cog. any of these will work, a bit spendy but really nice cogs:
https://www.benscycle.net/index.php?m...88_190_488_490
if not something like that, an 18 tooth cog will give you about 72 gear inches, a 19 tooth a little under 70 (68.something I think) and a 17t will prolly put you in the 75ish range.
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Old 02-11-08, 12:04 PM
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It doesn't "need" to be 3/32, you can run a mixed width drive-train set-up without problems. You'll just have to buy a 1/8" chain. Some say this wears the chain faster, but I never noticed anything on my first conversion.

Also, you NEED to buy a thread-on cog. Your wheelset already has one, but if you want to upgrade get a thread-on track cog. That other cpg you posted is for a free-hub cassette.
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Old 02-11-08, 12:22 PM
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siq. so i need one like this :https://bikeisland.com/cgi-bin/BKTK_S...ils&ProdID=335

also i want to take the 42 tooth chainring off, so like i have to take one the crank arm and a normal socket wont fit what do i need to get it off?
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Old 02-11-08, 12:23 PM
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Originally Posted by frymaster
that's a fantastic looking conversion bike! slightly ot, though: is that reflective goo on the rims? if so, that's an awesome idea.

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Old 02-11-08, 12:32 PM
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Originally Posted by gunther.paradis
siq. so i need one like this :https://bikeisland.com/cgi-bin/BKTK_S...ils&ProdID=335

also i want to take the 42 tooth chainring off, so like i have to take one the crank arm and a normal socket wont fit what do i need to get it off?
You need a crank puller that has a socket end. They're made for those weird bolts.
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Old 02-11-08, 12:35 PM
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one of these? https://bikeisland.com/cgi-bin/BKTK_S...ails&ProdID=55

Last edited by gunther.paradis; 02-11-08 at 12:45 PM.
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