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When you say "new", are these on the 2014 bikes ... or have you just made up a set like this?
Either way, they're good looking and interesting. Are they marketed?
Is the plastic *just* plastic, or some magic plastic like Delrin?
I would have thought the more you stabilize the swing arm/transmission, the more other influences such as frame flex would come into play ... and, yes, that big gap in the frame at the back has to be one part.
Not sure where I said "new" but currently they are not available for the later chassis, 09-up.. They will be probably in about 2 to 3 months. The 02-08 is available now but not actively marketed.. The place selling them is these guys but it is a small 2 person CnC machine shop that does performance HD stuff on the side.. Most of their work is from referrals.
I know the guys that are making these and they gave me a couple sets to test.
This system does a good job of stabilize the rear to the point where the next big issue is the forks. HD seems to have figured that out.. Not sure why they bypassed the rear chassis mount..
Not disillusioned and since civility has taken a break, I never mentioned the frame. I was talking specifically about the swing arm bushing which it was my understanding they improved the compound used in 09. Reading comprehension is a skill...give it a whirl.
You frame pic is great.. You can see how far the top and bottom cross braces are from pivot points of the swingarm mounts.. The drive train swing arm is simply compressed between those 2 donuts to hold the drive train.. If there is any lateral force, the pressure compresses only one side donut,, The other becomes unloaded and the drive train moves..
Here are pictures of the idea..
This is what the device looks like.
Here is the device installed on one side..
It seems to work pretty well.. Ties both sides of the frame together.. You need to set the spacing between the thrust bushing and nut as the tolerances vary..
The Sta-bo II does the same thing. Fits inside the isolator and is a lot less complicated. Both look like they reduce the vibration isolation, a lot.
the next big issue is the forks. HD seems to have figured that out.. Not sure why they bypassed the rear chassis mount..
If interested in the system send them some email.
The main issue is the forks, spring them for your weight and fit better valve technology like the Ricor Intiminators and it cures the weave. Unfortunately most Harley riders are oblivious to such things as proper suspension set up, hence they fit a band aid to cover up the real problem, sure stiffening up the swing arm bushings help but the spongy front end is the main culprit.
The Sta-bo II does the same thing. Fits inside the isolator and is a lot less complicated. Both look like they reduce the vibration isolation, a lot.
Nah ... no, it does not. Look, this thing is gripping the ends of the pivot and tensioning the frame and swing arm brackets far more sensibly that the single nut H-D uses against a light sheet metal washer in the donut.
The comparison between the two in those pictures are actually funny. "Old" being a nut and a chrome plastic cover, which is all H-D reckoned would do.
The STAB-BO (of which I have a set) just dampens the pivot movement a little.
This is also holding the rear frame rails together.
Bwoltz, did you notice a difference in the ride? Have you/they compared it with other systems? How does it adjust.
Something I also noticed on mine (a 2007 arm) was about a 1 or 1.5mm gap at each side of the end of the swing arm where the bushes or bearings fit into it. I would have thought that should be shimmed too.
Last edited by Dun Roamin; Aug 5, 2014 at 12:10 PM.
The main issue is the forks, spring them for your weight and fit better valve technology like the Ricor Intiminators and it cures the weave. Unfortunately most Harley riders are oblivious to such things as proper suspension set up, hence they fit a band aid to cover up the real problem, sure stiffening up the swing arm bushings help but the spongy front end is the main culprit.
If Howard at Motorcycle Metal can get the triple trees made in quantity to his liking we will have 49mm front ends with Ohlins 30mm cartridges for our older rides.
The Sta-bo II does the same thing. Fits inside the isolator and is a lot less complicated. Both look like they reduce the vibration isolation, a lot.
Nope, It technically does the opposite. It does not attempt to pull frame to together. It pushes the frame a part.. All it does is keep the rubber isolator from crushing on the side that has the force on it.. The other side unloads.. This nut system holds the frame together and distributes the load to both side of the frame..
Compare this to the other drawing.. One thing I've found early on was just to add a spacer between the rubber and swingarm to increase the preload on the rubber bushing. Nice 2 dollar fix.. It helps but does not achieve what the nuts do.
Won't the new design shown will have the vibration of the motor transmit directly to the frame thru a hard Delrin bushing via the connection to the pivot bolt?
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