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Chain protector on dual chainring?

Old 12-08-23, 10:48 PM
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Chain protector on dual chainring?

Hello,

To keep pants clean, are there chain protectors that fit on this kind of dual chainring?

Thank you.

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Old 12-09-23, 07:23 AM
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With a triple crank, you can fit one on the outer position and convert the crank to a dual crank with only two chainrings with a bashguard in the outer position.

On my bike with an internal geared hub, only needed a single speed crank, but I used a double chainring crank. I bought a clearance priced large chainring and used a saber saw to cut off the teeth, I then filed the rough saw cuts smooth to make a bashguard. Photo below. After the photo was taken, I sprayed my new bashguard black for better aesthetics.



Or, you can buy an off the shelf bashguard instead. You just need a crank arm that has room for one more chainring, so a triple crank arm if you are using it as a double.

If you try what I did and cut the teeth off of a chainring, the best way to file off the rough saw cuts was to install the ring on the crank. Then hold the file on the chainring as I turned the crank by hand, did that for about 15 minutes to get a good filing job.

That could mess up your chainline, might need a different bottom bracket if it does.

Depending on the desired chainring sizes, you might have trouble finding a big enough chainring for the inner position on a triple crank.
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Old 12-09-23, 02:09 PM
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I gave up on the guards in the form of an extra ring. Relative to what they are supposed to accomplish, they are heavy and clumsy, the opposite of what you want particularly on a folder. Instead, I buy a dedicated plastic chainguard, thin, optimized for its function, and drill and tap mounting holes in the outer ring. It is about half an hour job. The only downside is that you must be precise in drilling the holes. For 5-arm 50T, you have several Shimano chain guard choices, such as FC-3550, RC3000-CG, and R3030-CG. The 3000 is presumably the neatest and requires holes for which there is space on that Stronglight outer ring above.
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Old 12-11-23, 12:21 PM
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Thanks for the infos.

I'll try drilling holes in the outer ring.

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