That was a great video. The part of why mineral oil was used is a question I've long wondered about. Would mineral oil damage the seals in a DOT 4 system?
Hi Paul, a customer has just pointed this video out as he wants a softer clutch pull, I've measured the distance from the pivot point to the plunger on this small AJP and the Braktec master cylinders and they are both 19mm, so in my opinion they will both offer the exact same lever pull. Weirdly this older Small AJP master cylinder used to have a larger distance when they were first introduced as they used the same lever on the front brake version so it was around 20 to 21mm which gave a stiffer but faster lever pull, I think they swapped the lever to a longer length lever with the 19mm distance in around 2009.
Yes it seems that there is a bit of variation, but also the lever will make a difference, if you look at this link, (drive.google.com/drive/folders/0B0Mfile5AhnmdGY2SGNHT3lySWc?resourcekey=0-UUOJWIAAoRZmwCeHefFNFQ&usp=drive_link) I measured a few levers and they varied between 14mm and 20mm so this is also going to affect stroke of lever vs stroke of piston.
Hey can you use mineral oil in a brand new clutch master cylinder that says dot 4 on it(brand new never been dot 4 in it.. my mineral oil master is broken and need a new one
Thanks Paul, very informative. I have drag in my clutch after sitting with the lever pulled in for awhile. Thinking possible seal damage. 125st sherco 2012 model. Bike will stay put with a brake on. Your thoughts? Cheers Steve
Yes it sounds like you are getting bypass past the main Hydraulic seal, especially if it's 2012 model bike. Pretty sure that would be a Formula master cylinder which had some notoriety for wearing seals.Chuck a repair kit at it and it should get you there.
That was a great video. The part of why mineral oil was used is a question I've long wondered about. Would mineral oil damage the seals in a DOT 4 system?
Brilliant video 👍
Awesome informational video. Thanks Paul for putting this up 🍻
Hi Paul, a customer has just pointed this video out as he wants a softer clutch pull, I've measured the distance from the pivot point to the plunger on this small AJP and the Braktec master cylinders and they are both 19mm, so in my opinion they will both offer the exact same lever pull. Weirdly this older Small AJP master cylinder used to have a larger distance when they were first introduced as they used the same lever on the front brake version so it was around 20 to 21mm which gave a stiffer but faster lever pull, I think they swapped the lever to a longer length lever with the 19mm distance in around 2009.
Yes it seems that there is a bit of variation, but also the lever will make a difference, if you look at this link, (drive.google.com/drive/folders/0B0Mfile5AhnmdGY2SGNHT3lySWc?resourcekey=0-UUOJWIAAoRZmwCeHefFNFQ&usp=drive_link) I measured a few levers and they varied between 14mm and 20mm so this is also going to affect stroke of lever vs stroke of piston.
Nice video
Great Video! I have been wondering a few different things over the years, and you answered my questions. Thank you, much appreciated?
Glad it was helpful! Cheers
Hey can you use mineral oil in a brand new clutch master cylinder that says dot 4 on it(brand new never been dot 4 in it.. my mineral oil master is broken and need a new one
Bitte mehr trial content. Very Good
Thanks Paul, very informative. I have drag in my clutch after sitting with the lever pulled in for awhile. Thinking possible seal damage. 125st sherco 2012 model. Bike will stay put with a brake on. Your thoughts? Cheers Steve
Yes it sounds like you are getting bypass past the main Hydraulic seal, especially if it's 2012 model bike. Pretty sure that would be a Formula master cylinder which had some notoriety for wearing seals.Chuck a repair kit at it and it should get you there.
@@TheHellTeamTrials it's an ajp, do they have a kit for those or just the bit you showed on the video (the first one with all the little ribs)
@@stevesims8232 yes it's a kit. Comes with Piston (seals installed), spring, circlip, rubber boot, actuating pin and it's spring.