Jordan Mohawk Missiaen Posted October 26, 2009 Share Posted October 26, 2009 Hi there, I just picked up a 1976 yamaha xs500 DOHC for a couple hundred bucks and I am currently getting it stripped down to do a cafe conversion. It runs great and shifts smooth, I actually rode it for most of the summer. My only complaint so far is the poor stopping power. There is a mount for putting a second disc brake on the left fork leg and my wheel is able to take a second disc on the other side. I was wondering if I could just slap another caliper on and tee into the brake line, or will I need some sort of proportioning valve and a larger master cylinder to accommodate the extra fluid? I read somewhere that the xs500 had the option of dual discs at some point in it's history, but I've not been able to find any more than that. If I do in fact need a new master cyl. and such, am considering getting a set of brakes off an xs1100 that came stock with dual fronts. If the mounts dont work I can always machine a mount adapter. Any thoughts, pointers or tips would be awesome. Link to comment Share on other sites More sharing options...
Moderator drewpy Posted October 26, 2009 Moderator Share Posted October 26, 2009 Jordan you can use xs1100 master cyl and left caliper and mount or if you can't find the left side stuff, SR500 caliper mounts on the left side. I tried the T pipe route but couldn't find room on an xs400 so used dual banjo on master cylinder ( no, not deer hunter music ) drewps Link to comment Share on other sites More sharing options...
Jordan Mohawk Missiaen Posted October 27, 2009 Author Share Posted October 27, 2009 :welcomel Jordan you can use xs1100 master cyl and left caliper and mount or if you can't find the left side stuff, SR500 caliper mounts on the left side. I tried the T pipe route but couldn't find room on an xs400 so used dual banjo on master cylinder ( no, not deer hunter music ) drewps so let me get this straight... I can use the current brake lever on the XS500 or I need to get a new one to use dual calipers? Also, are the XS1100 calipers the same as I have on my 500? I have found used calipers for the 1100 for around $20 on ebay. Thanks Link to comment Share on other sites More sharing options...
Moderator drewpy Posted October 27, 2009 Moderator Share Posted October 27, 2009 so let me get this straight... I can use the current brake lever on the XS500 or I need to get a new one to use dual calipers? Also, are the XS1100 calipers the same as I have on my 500? I have found used calipers for the 1100 for around $20 on ebay. Thanks no, i said you can use the xs1100 master cyl! the brake lever is irrelevant as its just a replacable part and common to all yam bikes of the era. you need a left caliper and mount for the dual system, check the caliper pictures as some had a swinging caliper which is different from the floating caliper which I think you have!! Link to comment Share on other sites More sharing options...
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