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Shimano Canti CX 70 - spacer size?

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Shimano Canti CX 70 - spacer size?

Old 06-22-16, 05:11 PM
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Shimano Canti CX 70 - spacer size?

This is a follow-up to my previous thread about replacing my CX 50 brake shoes and pads with CX 70s. I'm ready to do that now, but can't figure out which size spacer I need. They come in small, medium, and large. I can't find any web sites that indicate how long each sized spacer is.

My current brakes have 1.5 cm spacers.

Does anyone know how long the spacers are on the three different CX 70 replacement brake shoes?

Thanks.

Edit: I got an answer. See post #7

Last edited by Giant Doofus; 06-25-16 at 11:17 AM.
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Old 06-22-16, 08:10 PM
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You can keep your existing spacer and bolt but that is assuming that it was correctly setup to begin with (and you are using the original wheels). The technical service instructions have a chart to determine the correct spacer and washer arrangement but it doesn't list the actual sizes.


https://bike.shimano.com/media/techdo...9830749996.pdf


I'd guess that 15mm is the long spacer. The medium spacer looks like it's length is about the same as its diameter, and I don't think the diameter would be 15mm.
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Old 06-23-16, 01:27 PM
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Originally Posted by Bezalel
You can keep your existing spacer and bolt but that is assuming that it was correctly setup to begin with (and you are using the original wheels). The technical service instructions have a chart to determine the correct spacer and washer arrangement but it doesn't list the actual sizes.


https://bike.shimano.com/media/techdo...9830749996.pdf


I'd guess that 15mm is the long spacer. The medium spacer looks like it's length is about the same as its diameter, and I don't think the diameter would be 15mm.
Thanks!
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Old 06-23-16, 04:25 PM
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I had the CX50s also, they had one piece brake shoes with integrated convex washers, did yours? My CX70s came with all three size spacers you mentioned and I chose the ones that positioned the brake arms close to vertical (not past vertical) when the pad meets the rim. So based on the different design (the CX70s having removable pads) I did not use any spacers or washers between the two setups that were comparable size, if memory serves they differed in size (CX50 spacers larger diameter and convexity?)
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Old 06-23-16, 06:54 PM
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The brakes come with all 3 sizes of spacers but replacement pads come with just 1 size of spacer.
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Old 06-23-16, 08:11 PM
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Originally Posted by curby
I had the CX50s also, they had one piece brake shoes with integrated convex washers, did yours? My CX70s came with all three size spacers you mentioned and I chose the ones that positioned the brake arms close to vertical (not past vertical) when the pad meets the rim. So based on the different design (the CX70s having removable pads) I did not use any spacers or washers between the two setups that were comparable size, if memory serves they differed in size (CX50 spacers larger diameter and convexity?)
I'm glad to hear from someone else who successfully made the switch. I had no idea that brake pads would be proprietary. That's just not something I thought of when I chose my bike, not that it would have changed my choice.

Originally Posted by Bezalel
The brakes come with all 3 sizes of spacers but replacement pads come with just 1 size of spacer.
That's what I found as well - the replacements pads come with just one of the three sizes of spacers. I think I'll order the large and hope that's right.
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Old 06-25-16, 11:16 AM
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I got an answer from customer service at Chain Reaction Cycles. Here's what they say:

The the three spacer sizes are 10mm, 15mm and 20mm respectively so the Medium spacer is what you need for your 1.5cm width requirement.
I'm placing the order now.
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