Steve's Burgman Trike By Bashan (Read 1,584 times)

[richardv]

Apr 22, 2014 7:59:44 GMT -6 davec said:

Apr 21, 2014 21:42:53 GMT -6 richardv said:

Over on a Gold Wing board I read about a 650 Burg riding across the country with some 1800 Wings without a hitch. The Wingers said they didn't ride any slower than normal for them and the guy on the Burg said it was an enjoyable ride.

I've got to try one out some day.

I did the Run For The Wall (Calif to DC) a few years (12) ago, and an older gentleman (about our age, I believe I recall him saying he was a retired military Colonel, or LtCol, [whatever]) rode a Burgman. At that time, we all kinda just looked at him sideways, but, he kept up just fine.
And, he carried all his camping gear
If I could, I would

Who you calling old?

[davec]

Apr 23, 2014 12:55:18 GMT -6 richardv said:

Apr 22, 2014 7:59:44 GMT -6 davec said:

I did the Run For The Wall (Calif to DC) a few years (12) ago, and an older gentleman (about our age, I believe I recall him saying he was a retired military Colonel, or LtCol, [whatever]) rode a Burgman. At that time, we all kinda just looked at him sideways, but, he kept up just fine.
And, he carried all his camping gear
If I could, I would

Who you calling old?

YOU
You old fart
You're 10 days older than me
11/26/49

Now go take a nap, or on another Sabre forum you'd get a nice GFY

With all respect intended

Dave

[jct842]

Rich, any chance you could make a couple rough drawings of the suspension on that trike? There's a couple things I don't quite understand as well as how the springs work. Wonder if that would be any softer ride than a std scooter. A plastic fender/body on it would make it same as a commercial unit. john

[Bashan]

Yeah man, no problem. I've got a PB diagram but I'll get you some more detail tomorrow. Let me go snag the PB...be right back.

[Bashan]

Here's the deal, the #1 pivot is the top of the swing, like a motorcycle swingarm. As the wheel pushes up it also swings back. The bottom circle is the wheel. The novel thing is, the trike part doesn't have a vertical shock absorber. It comes in from the front and restricts backwards movement of the swing which restricts vertical. The bike itself also provides vertical shock absorption so between the two it's a very nice ride:

Yeah, Ill draw up a diagram....you know me! Rich

[Bashan]

Here's a macro view. The shock and spring restrict lateral movement which translates into controlled vertical movement

:

[jct842]

I get it now. Maybe I should keep the majesty, just in case. I got it apart now and just changed the steering stem bearings and got a few other things I want to do before I put the crap plastic back. Been seriously considering a motorcycle that has real suspension. When the majesty hits a little bump with the back wheel 250lbs or there abouts has to start moving up before the springs and shocks start working.

[Bashan]

That can cause that weird effect where it starts to wallow in corners, never a fun feeling. I don't know John, that's a classic you have there, I'd keep it for staring at purposes at the very least. Steve also factored in the Burgie's own suspension. I'm sure it wouldn't work without that. The trike actually has a little lean factor to it which helps with cornering. It works quite well, the kind of thing an intuitive machinist probably doesn't have to think twice about. Rich

[jct842]

The only thing I would worry about is the diameter of the rod or bolt that goes thru the centerstand mount. that size was probably not intended for side thrust and when leaning or turning.

[Bashan]

I wasn't real comfortable with the packing bolt attachments either but the guy was a maintenance supervisor at Goodyear for 9 million years and has farmed in NW Ohio for just as long. He wouldn't do something dangerous, he knows metal and welding without question. Rich