Seems like a straight forward install ... here's hoping the vent solves the issues. Great video, looks like it maybe helpful for us to understand exactly what the vent "fix" does and how the dealers will install it.
Playing devils advocate, will you guys doing this void the warrantee? Guessing not since it's a Harley Kit that is available for the general public. Also, you have a video of the actual install that shows you installed it correctly
. I'm wondering if maybe Alan should do this to his 14 ... even if there is no evidence of migration? Might be a really cheap insurance policy, especially with my chosen fluid combination.
So am I understanding that the primary developes a slightly lower pressure than the transmission? Or maybe even a vacuum? This change in pressure is what causes the migration? The vent prevents that and thereby slowing or stopping the transfer? That's my guess since putting a vent on the primary side would have to keep the primary at atmospheric pressure pretty much all the time. I'm also guessing the transmission has some sort of vent also ... or there may be a chance the fluid migrates the other direction.
Seems to be a pretty interesting fix. I'm just curious as to why the migration didn't show up until the 14's and more so on the M8's. I know it has something to do with the hydraulic clutches ... so the hydraulic clutch is causing this change in pressure? Maybe the cycling of the clutch with the hydraulic fluid is acting like a pump and creating a slight vacuum? Does the installation instructions give any "theory as to why fluid migrates"?
One more observation/question (sorry, it's how my brain works ... drives me nuts) ... so if your bike/trike is experiencing the migration, I'm guessing you pretty much have to keep the same fluid in the trans as you have in the primary (Syn 3)? For instance, putting shock proof trans fluid in the trans wouldn't be a good idea ... pretty sure the clutch wouldn't like that ... even diluted (5 oz of shock proof mixed with the 30 something oz that are in the primary). Inquiring minds (at least mine) want to know
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Glad I'm not the engineer that had to figure that out ... LOL. Of course ... my thoughts on this could be in left field all together ...
... I can see me setting up test engines with gauges on both sides and recording the pressures on 15 minute intervals. I picture lots of hoses running all over the place, me in a white lab coat and thicker than my normal glasses ... pocket protector with pens and even a small thermometer and other highly technical "stuff" in there. Maybe an oval shaped patch on the back that says "
A.B. Normal Engineering".
I have warned y'all about my brain ...