Quote from: fabr on November 01, 2023, 01:19:51 PM

Sucking air on pedal return or caliper retraction .  Most likely master cylinder

right before yourself and adam pulled up to ask if i wanted to go out for a run....... i had just returned with 2 pump brakes.  i told the boys they could take it out but needed to bleed the brakes and i needed to flush my out  cause the front tire flung sand up that got behind my goggles. would like to see a link to the goggles you wear fabr.  the boys came walking up as i was walking to scotts rail and i thought, wth , why am i doing this ! i handed the boys the wrenches and fluid and said good luck  it's the front brakes with the issue too. they didn't understand why at first but i requested on the 2nd go round that they only bleed the front brakes. that way if it fades out again we will know which side and they did fade out again. don't see any debris in the bottoms. they did sit for 8 or 9 years though.

 i know they sell rebuild kits but probably just replace both master cyl's to be safe.  or i should say they can next time they are back 

Sitting for 8-9 years especially if it was not stored in a climate controlled environment might have allowed any moisture in the aluminum master cylinder to have caused minor corrosion/pitting of the bore and that is where the air is getting into the system without showing any leaks.I'd bet a few dollars on it. Same could have occurred in the caliper bores as well. Brake fluids are hygroscopic and absorb water just like ethanol. It isn't seen but it is there and in enough concentration WILL cause issues.

Sucking air on pedal return or caliper retraction .  Most likely master cylinder

right before yourself and adam pulled up to ask if i wanted to go out for a run....... i had just returned with 2 pump brakes.  i told the boys they could take it out but needed to bleed the brakes and i needed to flush my out  cause the front tire flung sand up that got behind my goggles. would like to see a link to the goggles you wear fabr.  the boys came walking up as i was walking to scotts rail and i thought, wth , why am i doing this ! i handed the boys the wrenches and fluid and said good luck  it's the front brakes with the issue too. they didn't understand why at first but i requested on the 2nd go round that they only bleed the front brakes. that way if it fades out again we will know which side and they did fade out again. don't see any debris in the bottoms. they did sit for 8 or 9 years though.

 i know they sell rebuild kits but probably just replace both master cyl's to be safe.  or i should say they can next time they are back 

Generalg.    That did suck for sure. Stopped by your camp in my can am phone booth to say. Stopped a couple of times but missed ya both times. So are going to make a jug and build your own new arm or is there another source?

I don't feel confident in my abilities to build new arms, this is really want needs to happen.  Scared about the rest of the arms.  The break is beyond me, not even on a weld.  About 1.5" away from a weld.   Wondering if the chrome process had anything to do with weakening the material.

Anyone up for building a new set of arms for me?   

Sucking air on pedal return or caliper retraction .  Most likely master cylinder

The newbies did well IMO.