Mercier Kilo TT Repair / Build
08-09-20, 01:21 PM
#26
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I concur. That crank arm is dead. It has shuffled off this mortal coil. It has ceased to exist. The only solution would be to find an exact replacement of the some make and model. Unlikely, as this is a relatively specialised item. Time for a new crank and matching bottom bracket
08-09-20, 01:24 PM
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You have to remove the DS crank. Same bolt in the middle as the NDS. It may come loose with a little tap... it may not.
But it's worth a try.
Although dedhed appears to be a man of few words, the link he provided is great!
Looks like it may prove to be just what you need. HOWEVER, you will need to check with someone in the know for Truactiv.
I'm more a Shimano kinda guy.
Even my fixed is shimano.
All the best
Barry
BTW on the inside of the crank will be a length in mm.
Usually between 165mm and 170mm
You will need to buy the correct length replacement crank.
But it's worth a try.
Although dedhed appears to be a man of few words, the link he provided is great!
Looks like it may prove to be just what you need. HOWEVER, you will need to check with someone in the know for Truactiv.
I'm more a Shimano kinda guy.
Even my fixed is shimano.
All the best
Barry
BTW on the inside of the crank will be a length in mm.
Usually between 165mm and 170mm
You will need to buy the correct length replacement crank.
I removed the bolt on the DS like you said but the crank wont budge. I even gave it a light tap with a mallet and nothing. Not sure if I should force it? It is on there real good with no play. Attaching some photos.
Def gonna check out that link dedhed posted. Hopefully, that can work out.
What kinda shimano are you running? Planning on using the freewheel/ss side...
DS Crank
DS Crank after bolt removal
Last edited by scantino; 08-09-20 at 01:27 PM. Reason: forgot photos
08-10-20, 03:16 PM
#28
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If through GENTLE encouragement it's remained stuck don't force it, you will need a puller.
My track/fixed came with Shimano FC-7710. I don't know I'd pay that price if I was looking for a new/retail fixed crankset.
In fact I look at the 7710 as a disadvantage. I'd like to run a power meter, but the cost of a NDS Power Meter (PM) crank is double that of newer Shimano Hollowtech compatible options. The 7710 is the older Optilink standard.
Barry
My track/fixed came with Shimano FC-7710. I don't know I'd pay that price if I was looking for a new/retail fixed crankset.
In fact I look at the 7710 as a disadvantage. I'd like to run a power meter, but the cost of a NDS Power Meter (PM) crank is double that of newer Shimano Hollowtech compatible options. The 7710 is the older Optilink standard.
Barry
08-11-20, 06:15 PM
#29
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If through GENTLE encouragement it's remained stuck don't force it, you will need a puller.
My track/fixed came with Shimano FC-7710. I don't know I'd pay that price if I was looking for a new/retail fixed crankset.
In fact I look at the 7710 as a disadvantage. I'd like to run a power meter, but the cost of a NDS Power Meter (PM) crank is double that of newer Shimano Hollowtech compatible options. The 7710 is the older Optilink standard.
Barry
My track/fixed came with Shimano FC-7710. I don't know I'd pay that price if I was looking for a new/retail fixed crankset.
In fact I look at the 7710 as a disadvantage. I'd like to run a power meter, but the cost of a NDS Power Meter (PM) crank is double that of newer Shimano Hollowtech compatible options. The 7710 is the older Optilink standard.
Barry
08-11-20, 06:44 PM
#30
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08-11-20, 06:47 PM
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So... I finally got the cranks off. The DS crank appears to be in good condition but I can't seem to locate a crank arm replacement for the NDS.
However, I do have a pair of old Sugino GLP cranks that I pulled from an 80s Fuji parts bike I have. They appear to be in solid shape. The bottom bracket is trashed though. Would this be an upgrade from the Truvativ Touro?
I am thinking of purchasing a Shimano BB-UN55 and putting it along with the Sugino GLP's into the Mercier Kilo frame to replace the Powerspine BB / Truvativ Touro setup.
Any thoughts? Will this work? If so, what do I do with the chainring? The original setup with Truvativ cranks had a 48. The Sugino has a 52 & 42. I plan on running it as a single speed/freewheel.
Thanks! This has all been super helpful and I am enjoying doing the work myself.
Truvativ Touro
Sugino GLP
However, I do have a pair of old Sugino GLP cranks that I pulled from an 80s Fuji parts bike I have. They appear to be in solid shape. The bottom bracket is trashed though. Would this be an upgrade from the Truvativ Touro?
I am thinking of purchasing a Shimano BB-UN55 and putting it along with the Sugino GLP's into the Mercier Kilo frame to replace the Powerspine BB / Truvativ Touro setup.
Any thoughts? Will this work? If so, what do I do with the chainring? The original setup with Truvativ cranks had a 48. The Sugino has a 52 & 42. I plan on running it as a single speed/freewheel.
Thanks! This has all been super helpful and I am enjoying doing the work myself.
Truvativ Touro
Sugino GLP
08-11-20, 06:54 PM
#32
Banned
Pull the BB out, and go shopping
they both look buggered up..
drive side of the square taper is not square.
they both look buggered up..
drive side of the square taper is not square.
08-11-20, 07:13 PM
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Time to decide...
1. BB feels good so, replace NDS crank (determine length required)
2. BB feels good so, replace the crankset (determine # of teeth in ring, and length required)
3. BB and Cranks all gotta go.
As for what to replace with... no idea. Too few gears, not Shimano, and I don't know if all Kilo BB's are the same.
I'd hate to give you bum data
All the best
Barry
08-11-20, 09:30 PM
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08-11-20, 09:31 PM
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Yep, that DS square taper... aint !
Time to decide...
1. BB feels good so, replace NDS crank (determine length required)
2. BB feels good so, replace the crankset (determine # of teeth in ring, and length required)
3. BB and Cranks all gotta go.
As for what to replace with... no idea. Too few gears, not Shimano, and I don't know if all Kilo BB's are the same.
I'd hate to give you bum data
All the best
Barry
Time to decide...
1. BB feels good so, replace NDS crank (determine length required)
2. BB feels good so, replace the crankset (determine # of teeth in ring, and length required)
3. BB and Cranks all gotta go.
As for what to replace with... no idea. Too few gears, not Shimano, and I don't know if all Kilo BB's are the same.
I'd hate to give you bum data
All the best
Barry
08-12-20, 09:00 AM
#36
Banned
General note : scratches become potential stress risers where cracks propagate ..
So be vigilant..
So be vigilant..
08-12-20, 01:29 PM
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08-12-20, 06:16 PM
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08-13-20, 08:27 AM
#39
Banned
Use a new BB
I cant hold the cranks in my hand to look , so y/n opinion withheld on your specific ones..
Just be aware of that material characteristic that I mentioned...
I cant hold the cranks in my hand to look , so y/n opinion withheld on your specific ones..
Just be aware of that material characteristic that I mentioned...
08-13-20, 10:37 AM
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08-13-20, 03:41 PM
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Scantino,
Does it matter if the taper is worn, if it's a double ringed crankset and you can't use it on a single/fixed rear wheel?
I've tried to point this out previously.
You will find people have done it on a conversion. But they used a regular geared rear wheel and spacers to correct the chainline for use with a single rear cog.
OR
Maybe you know of a way to use a double ringed crankset on a fixed/single speed wheel and frame?
Sorry, but I think you've reached the point where you put your hand in your pocket and buy parts.
Barry
Does it matter if the taper is worn, if it's a double ringed crankset and you can't use it on a single/fixed rear wheel?
I've tried to point this out previously.
You will find people have done it on a conversion. But they used a regular geared rear wheel and spacers to correct the chainline for use with a single rear cog.
OR
Maybe you know of a way to use a double ringed crankset on a fixed/single speed wheel and frame?
Sorry, but I think you've reached the point where you put your hand in your pocket and buy parts.
Barry
08-14-20, 10:43 AM
#43
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Scantino,
Does it matter if the taper is worn, if it's a double ringed crankset and you can't use it on a single/fixed rear wheel?
I've tried to point this out previously.
You will find people have done it on a conversion. But they used a regular geared rear wheel and spacers to correct the chainline for use with a single rear cog.
OR
Maybe you know of a way to use a double ringed crankset on a fixed/single speed wheel and frame?
Sorry, but I think you've reached the point where you put your hand in your pocket and buy parts.
Barry
Does it matter if the taper is worn, if it's a double ringed crankset and you can't use it on a single/fixed rear wheel?
I've tried to point this out previously.
You will find people have done it on a conversion. But they used a regular geared rear wheel and spacers to correct the chainline for use with a single rear cog.
OR
Maybe you know of a way to use a double ringed crankset on a fixed/single speed wheel and frame?
Sorry, but I think you've reached the point where you put your hand in your pocket and buy parts.
Barry
If the taper is worn though, sounds like its time for new cranks!
