When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Or, is it the surface area of a cross-section of the tube and the volume through the emulator that determines the distance traveled?
Could be..
Lets do some numbers.. (no not the ones that get you high but save them for later )
Most of the development for the HD forks that I know of was done to 41mm tubes.
So HD 41 41.28 od 33 id
HD 49 48.86 od 44.5 id.
^2 = Squared
Surface area of the tube will be pi (R_od)^2 - pi(R_id)^2
For the 41 we get 483 square mm or 4.83 sq centimeter.
For the 49 we get 320 square mm or 3.20 sq centimeter.
This means that for each cm of travel the 41 pushes 4.83 ccs of oil through the emulator and the 49 pushes only 3.20 cc..
It seems to me that 2/3 the holes the same size (5/16) should work for the bigger forks. You will need to more spring force on the top hat.
One thing I don't understand is that RT ships the FEGV-4901 with 4 holes in the top hat. I'd think that the number should be less as less fluid per cm of travel.
Unless I missed something, you're referring to just the tube wall as doing the "Pushing"? ... but it wouldn't be just that pushing the oil
OK, what else?
Add:
Think about it. You service the fork. With spring out you fill to certain level. As you move the tube up and down, what makes the level rise in the tube referenced to the lower? The surface area of the cross-section of the tube is what I see.
Last edited by Max Headflow; Mar 9, 2022 at 10:47 AM.
Reason: add:
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
Could be..
