Do anyone else have concerns that, after a full day of riding, an hour after parking you'll feel the need to ride again?
Look at that coilover position with just one person on the bike 🤭. It’s almost dead sideways. It’s almost 90 degrees from the swing arm movement direction. That makes for poor bump control. Definitely an aesthetics over function decision. Think I’ll keep the Burger and buy parts for it as needed.Well, this picture turned me off on the AK550. Great review of power, handling and electronics but made for the Asian market. Looks a little cramp for tall riders.
I built a vehicle for myself with horizontal springs and dampers front and back (to give a super low profile) and didn’t have any bump control issues. Went +/- from horizontal between loaded/unloaded and super comfy ride.Look at that coilover position with just one person on the bike 🤭. It’s almost dead sideways. It’s almost 90 degrees from the swing arm movement direction. That makes for poor bump control. Definitely an aesthetics over function decision.
True, when a cars left rear wheel gets lifted in a bump it trys to compress the right front but due to weight and the right rear countering this pivoting it is suppressed. We combat this on reverse trikes a lot.Hmm, we are translating car characteristics to bikes and it doesn’t always work (eg bike has 2 front shocks and only one rear and messes up any car spring type calculation)
I do understand the kinematics and while a standard damper does work better at high velocities it is not unusual to have motion ratios less than 1:1 (take a look at R1, Sv650 etc shocks). Obviously that means a different spring rate and preload.
The rate isn’t quite linear as we are talking about arcs, but I see Dave just posted on that while I’m typing.
In the case of the Burgman 400, they had to do a lever to get the shock plain of angle different from the shock's angle.
For the AK550, here is the plains of the two. The swing angles of A-B and A-D are the same as A is pivot locked and can not move. But as D arc swings up it goes froward too and the distance from C-D gets shorter. C-D distance will continue to get shorter until the A-D angle gets to 90 degrees and goes over center.
Trig hurts my head.
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