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Sugano Chainring bolts for old bike - place to source?
#1
I have an old bike with Sugino crank and have lost two bolts and bolts, on the bolt thread 8 mm long and then has a 3.5 mm larger bulb the width of the head is 7.9 to 8 mm. Any ideas on where I can source?
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#2
1. Check with a bike shop. They may be able to identify what you need or figure out a substitute that would work

2. Google "Sugino chainwheel bolts" and see if you get a match (add the model name/number if you can determine it). If not you could try calling one of the suppliers that comes up in a search to see if they carry what you want.

3. If there's a bike co-op or used bike shop locally see if they have compatible parts

No matter what it's time to check the other chainwheel bolts for tightness, as well as other securing bolts on the bike before you loose more. There would have been symptoms (clicking, rattling, chainwheel wobbling) before you lost the bolts. Anytime a bike starts to be noisy it needs to be investigated before becoming inconvenient and expensive to repair.
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#3
Thank you my son had bike as transpiration in Chicago and brought home missing bolts he said someone took but I don't know.

We just started our quest yesterday. I hoping to source somehow on line.

We did go to Erik's a bike chain store in MN who do a great job they pulled bolt and gave us the measurements but told us we would have to find somehow on line.

Like the bike Coop idea.

Have also checked several groups that make bolts.

I am wondering if we can't find bolts are the cranks interchangeable? Can I just buy and insert a new crank and Chainring? They look to be around $35?

Thanks for your help and ideas.



(05-24-2014, 05:48 PM)cny-man Wrote:  1. Check with a bike shop. They may be able to identify what you need or figure out a substitute that would work

2. Google "Sugino chainwheel bolts" and see if you get a match (add the model name/number if you can determine it). If not you could try calling one of the suppliers that comes up in a search to see if they carry what you want.

3. If there's a bike co-op or used bike shop locally see if they have compatible parts

No matter what it's time to check the other chainwheel bolts for tightness, as well as other securing bolts on the bike before you loose more. There would have been symptoms (clicking, rattling, chainwheel wobbling) before you lost the bolts. Anytime a bike starts to be noisy it needs to be investigated before becoming inconvenient and expensive to repair.
Reply
#4
Cranks are of varying designs, so have to have a specific length of BB spindle. An older bike is likely to have a crankset that takes a much different spindle length than current equipment. It's usually simplest to order the spindle and cranks as a unit or at the same time.
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