primary oil
Banned
Joined: Dec 2014
Posts: 21,413
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I’m 76. Age 17 in 1960. Ride Wide Glide every weekend. Do my own service. Also just purchased dirt bike for riding in desert.
Ride with my grand children.
There are guys older than me riding.
Engine oil is separate chamber. Primary and transmission are same chamber on 1200 Sportster. Separate in V Twins.
You will die if you stop riding!
Last edited by user 7172984932; Sep 26, 2019 at 11:02 AM.
HDF Community Team
Joined: Dec 2011
Posts: 8,591
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From: San Diego, CA
Thanks for calling me a "youngin." I'll take it!!!
I'm actually 61. With a BS in Math from UCSD.
John
I'm actually 61. With a BS in Math from UCSD.
John
Last edited by John Harper; Sep 26, 2019 at 11:06 AM.
Banned
Joined: Dec 2014
Posts: 21,413
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I live in Encinitas. We have to have a beer together.
BS Math. 45 years Computer Sciences Engineering.
HDF Community Team
Joined: Dec 2011
Posts: 8,591
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From: San Diego, CA
John
Road Master
Joined: Jan 2008
Posts: 1,175
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From: Philly PA
LOL, I should have read the rest of the thread to see how many people responded before I did. Didn't mean to jump on a dead horse 
I revised my post as you were replying and will try to remember to take photos of my cases tonight as they are sitting in a box under my workbench waiting for me to rebuild the engine
I revised my post as you were replying and will try to remember to take photos of my cases tonight as they are sitting in a box under my workbench waiting for me to rebuild the engine
Outside of the left half of the case where the primary sits. I put a red light behind the case to show the opening where the primary and transmission share fluid
The inside of the same half. The back half is where the transmission goes and the front is where the crank assembly is. Note the divider between the two. Also, you can see the other side of the opening between the transmission and primary at the bottom under the hole for the secondary shaft
And to put the primary side into perspective, here is a photo with the primary chain and sprockets removed
Tourer
Joined: Apr 2016
Posts: 270
Likes: 64
From: Camotes Islands, Cebu, Philippines
cacomly
Just as clear as daylight!! Many thanks for the effort!! I am clear now and can put this into the old internal hard drive of my head....
Good news in my mind, as it keeps the clutch wear debris out of the engine system. I know the filter is supposed to protect things, but those tiny filters are likely only 25 to 40 micron style elements, and it is the 25 size that do the bulk of damage internal to the friction parts. Good to know, they are segregated to the transmission.
Just as clear as daylight!! Many thanks for the effort!! I am clear now and can put this into the old internal hard drive of my head....
Good news in my mind, as it keeps the clutch wear debris out of the engine system. I know the filter is supposed to protect things, but those tiny filters are likely only 25 to 40 micron style elements, and it is the 25 size that do the bulk of damage internal to the friction parts. Good to know, they are segregated to the transmission.
HDF Community Team
Joined: Dec 2011
Posts: 8,591
Likes: 4,019
From: San Diego, CA
Interesting how there's a small protrusion of case metal in the oil passageway. I wonder if it's to prevent debris from getting in (or out) of the gearbox. It looks deliberately designed like that. Or, perhaps to keep oil from going from side to side rapidly and causing oil loss to the gears? What's it called, windage tray? Oil Baffle? I forget.
John
John
Last edited by John Harper; Sep 27, 2019 at 07:41 AM.
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Tourer
Joined: Apr 2016
Posts: 270
Likes: 64
From: Camotes Islands, Cebu, Philippines
Yeah, and with good reason....... Conflicts from even HD mechanics...... don't believe everything you read on the internet!!