crankset cover for vintage bike
12-03-23, 04:15 AM
#1
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crankset cover for vintage bike
HI,
I would like to fit a crankset cover on my vintage racing bike to prevent the trousers from getting caught in the teeth of the sprocket (it happens every now and then) or from getting dirty with grease.
This is my crankset (42-52):
https://velobase.com/ViewComponent.a...m=115&AbsPos=6
All the crankset covers I've seen on sale have 4 or 5 holes and they can't fit on my crankset which has 6 holes.
Where can I find a suitable one?
Thank you.
I would like to fit a crankset cover on my vintage racing bike to prevent the trousers from getting caught in the teeth of the sprocket (it happens every now and then) or from getting dirty with grease.
This is my crankset (42-52):
https://velobase.com/ViewComponent.a...m=115&AbsPos=6
All the crankset covers I've seen on sale have 4 or 5 holes and they can't fit on my crankset which has 6 holes.
Where can I find a suitable one?
Thank you.
Last edited by glysolid; 12-03-23 at 04:22 AM.
12-03-23, 04:38 AM
#2
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I can't imagine finding one will be easy, considering that Nervar has been out of business for quite some time. At the same time, making a chainset cover shouldn't be particularly hard if you are handy. You can cut a circular piece of wood and trace the mounting holes onto the piece of wood, then drill out those holes. A few spacers and nuts and bolts and you should have a pretty stylish chainset guard. Something like this should suffice:
Image taken from Pinterest.
Image taken from Pinterest.
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12-03-23, 04:46 AM
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Tuck your pant legs in your socks.
And if you have laces tuck the right-side ones in your show so they don't get caught by the teeth; at low speed this can be an error from which you cannot recover.
And if you have laces tuck the right-side ones in your show so they don't get caught by the teeth; at low speed this can be an error from which you cannot recover.
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12-03-23, 07:45 AM
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Campagnolo made three bolt cranksets with chain guards. I took mine off and set it aside , I’m not sure of the BCD but I’ve seen them on eBay.
Campagnolo Grand Sport crankset with guard removed
Campagnolo Grand Sport crankset with guard removed
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12-03-23, 07:53 AM
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Search eBay for Nervar chain guard. There are a few of them. I don't know if they fit your chain rings or not.
https://www.ebay.com/sch/i.html?_fro...guard&_sacat=0
https://www.ebay.com/sch/i.html?_fro...guard&_sacat=0
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12-03-23, 07:57 AM
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might have more luck just swapping crankset rather than chasing a 6 hole pant guard. Good luck on your search.
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12-03-23, 08:08 AM
#7
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TA made them. 152 mm bolt to bolt straight across.
https://store.bicycleczar.com/product-p/11160008.htm
I used one on a single TA crank. I only had three long bolts but it does the job. The chainring has all six bolts.
https://store.bicycleczar.com/product-p/11160008.htm
I used one on a single TA crank. I only had three long bolts but it does the job. The chainring has all six bolts.
Last edited by clubman; 12-03-23 at 08:27 AM.
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12-03-23, 09:49 AM
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Don’t ride wearing pants.
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12-03-23, 10:02 AM
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Tucking your pants leg into sock as suggested above is so much easier…but if that trick doesn’t appeal to you, buy a “trouser clip” that keeps the leg of tour pants tight to your ankle…Brooks even makes a leather one.
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12-03-23, 10:31 AM
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OK, go to your nearest co-op.
You have a size 52T?
Find the same BCD and get a 54T or 55T if they made one.
Now go home, cut the teeth off and grind the thing to a round toothless shape.
Boom
Robert
You have a size 52T?
Find the same BCD and get a 54T or 55T if they made one.
Now go home, cut the teeth off and grind the thing to a round toothless shape.
Boom
Robert
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12-03-23, 10:51 AM
#12
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Search eBay for Nervar chain guard. There are a few of them. I don't know if they fit your chain rings or not.
https://www.ebay.com/sch/i.html?_fro...guard&_sacat=0
https://www.ebay.com/sch/i.html?_fro...guard&_sacat=0
TA made them. 152 mm bolt to bolt straight across.
https://store.bicycleczar.com/product-p/11160008.htm
I used one on a single TA crank. I only had three long bolts but it does the job. The chainring has all six bolts.
https://store.bicycleczar.com/product-p/11160008.htm
I used one on a single TA crank. I only had three long bolts but it does the job. The chainring has all six bolts.
Last edited by glysolid; 12-03-23 at 10:54 AM.
12-03-23, 10:59 AM
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In lieu of a lathe, I have mounted a ring on the crankset, covered the BB with a rag and filed the teeth off as I turned the crank. It is a bit time consuming, but not too bad with an aluminum ring.
It can also have a nicer appearance than a solid guard.
John
12-03-23, 12:08 PM
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$30 is pretty reasonable for a rare part. Probably would cost that must to purchase the right size chainring to make a homemade version. Unless you live near in a bike-culture city where the bike co-ops have deep parts bins.
12-03-23, 12:56 PM
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Shimano and SR both made chainguards, the chances the BCD’s of those fit yours is marginal.
even then, they were not a panacea, pants still could catch.
Terry trouser clips. Or later versions, I have a pair that have LED’s buried in the strap, and are essentially spring loaded, gift from the worried wife for when riding home at night.
Also, many of those guards require the front mechanism to be raised above best performance to clear. No free lunch.
even then, they were not a panacea, pants still could catch.
Terry trouser clips. Or later versions, I have a pair that have LED’s buried in the strap, and are essentially spring loaded, gift from the worried wife for when riding home at night.
Also, many of those guards require the front mechanism to be raised above best performance to clear. No free lunch.
12-03-23, 08:43 PM
#16
Honorary Bicycle Rider
We 3D printed a chain guard to convert this Shimano triple Crankset into a 'Mountain Double' for an SR bicycle.
