swooshdave Posted July 9, 2017 Share Posted July 9, 2017 If the seal was causing a problem typically they leak when they get old. I guess I should reread all 70 pages as to why you think it's the seal. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Scud Posted July 9, 2017 Share Posted July 9, 2017 You need a second V11. Do we need to find one for you? I know where there are some viable options... a green one and a champagne one... both just need a little more love. Hey - I'm also wondering about the focus on the clutch slave's seal. Of course, I haven't felt what you are describing, but I have had a leaky slave cylinder on a dirt bike - you lose pressure and fluid. In the case of the dirt bike, the fluid "disappeared" into the engine oil. But with the V11, it would dribble out the opening in the rear case of the transmission. You have previously reported a very noisy clutch. Perhaps you are trying to avoid pulling the engine or transmission, but it seems that's going to need some attention soon. Has there been so much wear in the flywheel that the plates are getting bound up and not allowing the clutch to re-engage? That could also explain what you are feeling - and seems more likely to me than a sticky piston. Link to comment Share on other sites More sharing options...
Chuck Posted July 9, 2017 Share Posted July 9, 2017 One of the answers from WG.. I know it's not oem but Kaman, Motion Ind. or any good bearing house or Hydraulic shop should have that nowadays. If all else fails I know they make O-ring kits to build your own. Plan B... I have a spare used complete slave Lemme know Paul B Link to comment Share on other sites More sharing options...
Chuck Posted July 9, 2017 Share Posted July 9, 2017 Docc, here's the thread on WG. That way you can listen to the ventriloquist instead of the dummy.. http://wildguzzi.com/forum/index.php?topic=91144.0 Link to comment Share on other sites More sharing options...
swooshdave Posted July 9, 2017 Share Posted July 9, 2017 Is the slave NLA or just not currently available? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Chuck Posted July 9, 2017 Share Posted July 9, 2017 Earlier in the thread he said NLA. Link to comment Share on other sites More sharing options...
docc Posted July 9, 2017 Share Posted July 9, 2017 You have previously reported a very noisy clutch. Perhaps you are trying to avoid pulling the engine or transmission, but it seems that's going to need some attention soon. Has there been so much wear in the flywheel that the plates are getting bound up and not allowing the clutch to re-engage? That could also explain what you are feeling - and seems more likely to me than a sticky piston. The flywheel wear is a definite concern. I *thought* I was going with the simple solution first. Another high(er) mileage V11 we know of just needed a clutch slave replacement. The failure doesn't *feel* mechanical like the clutch discs popping back out of the flywheel grooves. (But, yeah, I am totally putting off the big teardown. "Some people" seem to take these things apart like Legos ) So, right, the Grimeca made V11 clutch "command" cylinder is No Longer Available. Link to comment Share on other sites More sharing options...
docc Posted July 9, 2017 Share Posted July 9, 2017 I'm struggling with the startling statistic that this single solitary seal has stranded my Sport . . . Definitely. Is there a part number on the slave? No part number on the Grimeca slave cylinder. If the seal was causing a problem typically they leak when they get old. I guess I should reread all 70 pages as to why you think it's the seal. Sent from my iPhone using Tapatalk There is an outer round section O-ring that is likely the "seal". I'm trying to rule out the inner "flat" O-ring. Again, my failure could be (or could be exacerbated by) the worn flywheel [or input shaft as Chuck noted earlier], but I'm (obviously) hoping for a simple O-ring solution. Link to comment Share on other sites More sharing options...
LowRyter Posted July 9, 2017 Share Posted July 9, 2017 https://www.mcmaster.com/#o-rings/=18febsl Square-Profile High-Temperature Silicone O-Rings Link to comment Share on other sites More sharing options...
docc Posted July 9, 2017 Share Posted July 9, 2017 Looks like Silicone O-rings are compatible with brake fluid, but have "low tear resistance and high coefficient of friction." Also, I only see fractional measures (no metric) silicone O-rings at McMaster-Carr (?) "Silicone compounds are very clean and are used in many food and medical applications because they do not impart odor or taste. Silicone compounds are not recommended for dynamic O-ring sealing applications due to relatively low tear strength and high coefficient of friction. Silicone is resistant to hot air, ozone, UV radiation, engine and transmission oils, animal and vegetable fats and oils, and brake fluids." (https://o-ring.info/en/materials/silicone--vmq/?gclid=CjwKEAjwqIfLBRCk6vH_rJq7yD0SJACG18frNSY_FySPui6fJXq9hwsnFG4bfiZXzNSbtHtuH8V2ORoCptvw_wcB) Will we be correct in declaring that the correct compound for this application is EPDM? Link to comment Share on other sites More sharing options...
swooshdave Posted July 9, 2017 Share Posted July 9, 2017 http://www.harpermoto.com/clutch-command-cylinder-05086330.html Link to comment Share on other sites More sharing options...
docc Posted July 9, 2017 Share Posted July 9, 2017 One of the answers from WG.. I know it's not oem but Kaman, Motion Ind. or any good bearing house or Hydraulic shop should have that nowadays. If all else fails I know they make O-ring kits to build your own. Plan B... I have a spare used complete slave Lemme know Paul B Everything at Motion Ind. looks to be inch measure, and no square section. Link to comment Share on other sites More sharing options...
docc Posted July 9, 2017 Share Posted July 9, 2017 http://www.harpermoto.com/clutch-command-cylinder-05086330.html Yeah, I called Harper's two days ago: NLA, not in stock. Moto International also lists the part online, but emailed me shortly after my order to advise the same. Link to comment Share on other sites More sharing options...
czakky Posted July 9, 2017 Share Posted July 9, 2017 Try calling some seal specialists. Even a custom job cost could be divided by the v11 community. https://www.aceseal.com/ethylene-propylene-o-rings-gaskets-seals http://www.allsealsinc.com/oilseals.html Worth a shot at this point... Link to comment Share on other sites More sharing options...
docc Posted July 10, 2017 Share Posted July 10, 2017 Try calling some seal specialists. Even a custom job cost could be divided by the v11 community. https://www.aceseal.com/ethylene-propylene-o-rings-gaskets-seals http://www.allsealsinc.com/oilseals.html Worth a shot at this point... I'll go back to my local supplier later this week. They spec'd the build (in Nitrile) for about $13US each/ minimum of ten, but I'll have to see if they can have them built in EPDM. In the meantime, I've contacted an EPDM supplier online as well as Ariete in Italy. It just seems like the kind of thing that ought to already be in a bin somewhere, waiting to get bagged and shipped . . . Thanks, everyone for the community effort! We'll get this figured out! It'll be one for The En-psycho-pedia of Compatible Parts. Link to comment Share on other sites More sharing options...
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