Buy Crankset with rings just to replace my bike's worn rings
#1
Newbie
Thread Starter
Buy a crankset with chainrings just to replace my bike's worn rings?
I just replaced the bottom bracket on my 1999 Fisher Ziggurat and see that the chainrings are badly worn.
Here's a cheap set of cranks with rings but someone in reviews says this set needs a 138mm spindle.
Maybe 138, way longer than my current 110 anyway.
If I buy this set and the cranks don't work on my bike I could just swap the rings to my current crankset right?
Here's the set at the jungle website - amazon.com/SHIMANO-Hybrid-Crankset-Black-175mm/dp/B002I7K5KS/
Here's my bike's specs - bikepedia.com/QuickBike/BikeSpecs.aspx?item=87170
Thanks
Here's a cheap set of cranks with rings but someone in reviews says this set needs a 138mm spindle.
Maybe 138, way longer than my current 110 anyway.
If I buy this set and the cranks don't work on my bike I could just swap the rings to my current crankset right?
Here's the set at the jungle website - amazon.com/SHIMANO-Hybrid-Crankset-Black-175mm/dp/B002I7K5KS/
Here's my bike's specs - bikepedia.com/QuickBike/BikeSpecs.aspx?item=87170
Thanks
Last edited by The Real Mowgli; 03-11-24 at 09:46 PM.
#2
Newbie
Thread Starter
...also my 9 speed cassette is HyperGlide.
Does my front chainset need to also be HG to work correctly?
Do HG systems need an HG specific chain?
Thanks
Does my front chainset need to also be HG to work correctly?
Do HG systems need an HG specific chain?
Thanks
#3
Newbie
Thread Starter
#4
Junior Member
Some missing information here, yes the the crank should be nearly a drop in replacement but would likely need a longer BB to dial in the chain line. Both cranksets appear to be 104 - 4 BCD out and likely a 64 - 4 granny. If the rings are a match you could use the new chain rings on the old crank avoiding a BB replacement.
https://www.sheldonbrown.com/cribsheet-bcd.html
https://www.sheldonbrown.com/cribsheet-bcd.html
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#5
Really Old Senior Member
Are you sure the "wear" on your chain rings just aren't the various "shift aids" that are the norm on multiple chain ring bikes?
Not sure what those are? Look at a new bike.
Is the chain skipping? If not, the rings are probably good.
Not sure what those are? Look at a new bike.
Is the chain skipping? If not, the rings are probably good.
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#6
Newbie
Thread Starter
Some missing information here, yes the the crank should be nearly a drop in replacement but would likely need a longer BB to dial in the chain line. Both cranksets appear to be 104 - 4 BCD out and likely a 64 - 4 granny. If the rings are a match you could use the new chain rings on the old crank avoiding a BB replacement.
It at least needs new rings. It's been abused.
All different shapes of teeth, mostly pointy and there's even a tooth missing from the middle ring.
Somehow the chain checks out as new-ish with my Park chain wear indicator. Not even .5 fits.
LBS said it might be stretched so much that it's reaching to to fit the next link. Smells like BS to me.
I'll post pictures after a few more posts. N00Bs can't post attachments until after 10 posts.
Last edited by The Real Mowgli; 03-12-24 at 12:48 AM.
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#8
I'm good to go!
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Here is your picture. Yeah, that middle ring is worn!
https://www.bikeforums.net/g/picture/33004497
Bigger pic here.... https://cimg7.ibsrv.net/gimg/bikefor...ae99c5e035.jpg
Just let us know it's in the Gallery here and someone will add it to the thread for you till you get your magic 10 posts.
https://www.bikeforums.net/g/picture/33004497
Bigger pic here.... https://cimg7.ibsrv.net/gimg/bikefor...ae99c5e035.jpg
Just let us know it's in the Gallery here and someone will add it to the thread for you till you get your magic 10 posts.
Last edited by Iride01; 03-12-24 at 07:46 AM.
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#9
Newbie
Thread Starter
#10
Junior Member
I just replaced the bottom bracket on my 1999 Fisher Ziggurat and see that the chainrings are badly worn.
Here's a cheap set of cranks with rings but someone in reviews says this set needs a 138mm spindle.
Maybe 138, way longer than my current 110 anyway.
If I buy this set and the cranks don't work on my bike I could just swap the rings to my current crankset right?
Here's the set at the jungle website - amazon.com/SHIMANO-Hybrid-Crankset-Black-175mm/dp/B002I7K5KS/
Here's my bike's specs - bikepedia.com/QuickBike/BikeSpecs.aspx?item=87170
Thanks
Here's a cheap set of cranks with rings but someone in reviews says this set needs a 138mm spindle.
Maybe 138, way longer than my current 110 anyway.
If I buy this set and the cranks don't work on my bike I could just swap the rings to my current crankset right?
Here's the set at the jungle website - amazon.com/SHIMANO-Hybrid-Crankset-Black-175mm/dp/B002I7K5KS/
Here's my bike's specs - bikepedia.com/QuickBike/BikeSpecs.aspx?item=87170
Thanks
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#12
Newbie
Thread Starter
I bought a replacement LX crankset with very good looking rings. Same as mine but it looks barely used.
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#13
Newbie
Thread Starter
...and a NOS replacement HG 9 speed LX cassette from the same guy. That's 10 posts.
Last edited by The Real Mowgli; 03-13-24 at 12:13 PM.
#14
Newbie
Thread Starter
https://scontent-bos5-1.xx.fbcdn.net...-A&oe=65F6D5CC
Weird. It says data corrupt when I try to post it as an attachment but the link to the picture works.
Weird. It says data corrupt when I try to post it as an attachment but the link to the picture works.
#15
Newbie
Thread Starter
BF doesn't seem to like posting pictures hosted at Facebook.
Not crankset (or bikes) related but here's an old pic I posted at a different site.
Alrighty then. This forum sofware doesn't like posting pics hosted at FB. Noted.
Not crankset (or bikes) related but here's an old pic I posted at a different site.
Alrighty then. This forum sofware doesn't like posting pics hosted at FB. Noted.
Last edited by The Real Mowgli; 03-13-24 at 12:46 PM.
#16
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It at least needs new rings. It's been abused.
All different shapes of teeth, mostly pointy and there's even a tooth missing from the middle ring.
Somehow the chain checks out as new-ish with my Park chain wear indicator. Not even .5 fits.
LBS said it might be stretched so much that it's reaching to to fit the next link. Smells like BS to me.
I'll post pictures after a few more posts. N00Bs can't post attachments until after 10 posts.
All different shapes of teeth, mostly pointy and there's even a tooth missing from the middle ring.
Somehow the chain checks out as new-ish with my Park chain wear indicator. Not even .5 fits.
LBS said it might be stretched so much that it's reaching to to fit the next link. Smells like BS to me.
I'll post pictures after a few more posts. N00Bs can't post attachments until after 10 posts.
#17
Clark W. Griswold
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So typically you want to post in other threads to get those 10 posts..get active in the threads, you will have some fun!
Ziggs are good bikes, I just built a frame up for a friend with some 10 speed Deore and some no name cranks disc front and V-brakes at the rear (because they are actual Shimano made brakes not just linear pull brakes from someone else) and the bike is quite awesome. A goofy little 1x10 mountain bike but was fun to ride the short time I rode it sadly it didn't fit me well enough to ride it but my friend was quite happy.
Ziggs are good bikes, I just built a frame up for a friend with some 10 speed Deore and some no name cranks disc front and V-brakes at the rear (because they are actual Shimano made brakes not just linear pull brakes from someone else) and the bike is quite awesome. A goofy little 1x10 mountain bike but was fun to ride the short time I rode it sadly it didn't fit me well enough to ride it but my friend was quite happy.
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#18
Newbie
Thread Starter
Abused is really the right word for this drivetrain. I'm not sure it has enough miles to significantly wear chainrings. On many bikes chainrings are a lifetime installment. But these chainrings show evidence of numerous shifts under load. If that's you doing that ... you should stop. If you bought it like that from a previous owner ... eef, I wouldn't have. Not sure why the new triple needs so much longer a BB spindle. Can you double check that? But, as another poster noted, as long as the new crank isn't a unit triple with bolted together rings, then you can just move them over to your existing crank-arms. As for chain wear. Before you write off the LBS's BS, is it possible that they may be onto something? TBH I've never used a chainwear indicator in anger. When things start skipping is usually what I wait for. How many miles are on the drivetrain? No wear at all is just as suspect as so much wear that the odometer is coming around to zero again ...
He only replaced what broke and I don't know when if it ever saw the shop.
The new (to me) triple/cranks that are on the way are used but in very good condition.
It's the same model that's on it now so they use the same BB.
My original BB was a UN52, I installed a NOS UN55 that's regarded as a mild upgrade but same 73/110mm configuration.
Different spindle lengths are to line up different cranks/rings with the bike's frame geometry to keep a straight chainline right?
The set on Jungle website in my OP was just an idea.
I was considering swapping the rings but after a good look I'm in for replacing with better condition cranks as well.
I don't know where you got the idea that I checked the chain in anger lol.
The shop checked it and I checked it when I got my own indicator tool. None of us were angry
Can a chain stretch so much that a chainlength indicator tries to fit between the next set of links?
That's what LBS suspected. That the chain was worn a half inch over it's length. Doesn't seem possible.
All conjecture's moot at this point. New and near new complete drivetrain is on the way.
I know that everything I don't have to replace makes for better value but I like the bike and if it's 75% new by the time it's reliable that's OK. When I rode back in the 90's I replaced/upgraded everything on my Rockadile over time. The only thing original on it was the frame. At least if that happens again it's a helluva good frame.
Last edited by The Real Mowgli; 03-13-24 at 07:09 PM.
#19
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This is possible, but would be very easy to confirm using a ruler, or comparing with a new chain, or even just eyeballing it for an experienced mechanic.
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#20
Newbie
Thread Starter
The drivetrain cleaned up real nice. Gap-toothed grin but shiny.
ZigguRatRod
ZigguRatRod
#21
Newbie
Thread Starter
I meant an inch over the length of the indicator, not over the length of the whole chain.
That would give the pins/rollers many percent of slop, not 1/2% to 3/4%
#22
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It at least needs new rings. It's been abused.
All different shapes of teeth, mostly pointy and there's even a tooth missing from the middle ring.
Somehow the chain checks out as new-ish with my Park chain wear indicator. Not even .5 fits.
LBS said it might be stretched so much that it's reaching to to fit the next link. Smells like BS to me.
I'll post pictures after a few more posts. N00Bs can't post attachments until after 10 posts.
All different shapes of teeth, mostly pointy and there's even a tooth missing from the middle ring.
Somehow the chain checks out as new-ish with my Park chain wear indicator. Not even .5 fits.
LBS said it might be stretched so much that it's reaching to to fit the next link. Smells like BS to me.
I'll post pictures after a few more posts. N00Bs can't post attachments until after 10 posts.
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