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Old 03-12-2013, 04:19 AM   #31
Hellracer.nl OP
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The leaner I am building is of the kind where the bike leans and the sidecar stays as it is. A Flexit leaner has a leaning sidecar as well. Mine doesn't.
The pivot points should be in the center line of the bike, the front pivot point is a little bit higher placed than the rear pivot point. This helps the steering.
This requires a subframe which will influence your ground clearance. For a road going bike this is not a problem, for off road riding it may be. The leaner sidecar feels like a heavy pannier on 1 side. Not ideal for offroading in my opinion. A fxed rig would be my preference if I would do offroading with it. I'll build a removable strut to be able to create a fixed rig whenever I hit a slippery road.

I discovered last year on my prototype build that sometimes a fixed rig can be very handy.
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Old 03-13-2013, 12:23 AM   #32
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Old 03-13-2013, 04:15 AM   #33
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Quote:
Originally Posted by Hellracer.nl View Post
The leaner I am building is of the kind where the bike leans and the sidecar stays as it is. A Flexit leaner has a leaning sidecar as well. Mine doesn't.
The pivot points should be in the center line of the bike, the front pivot point is a little bit higher placed than the rear pivot point. This helps the steering.
This requires a subframe which will influence your ground clearance. For a road going bike this is not a problem, for off road riding it may be. The leaner sidecar feels like a heavy pannier on 1 side. Not ideal for offroading in my opinion. A fxed rig would be my preference if I would do offroading with it. I'll build a removable strut to be able to create a fixed rig whenever I hit a slippery road.

I discovered last year on my prototype build that sometimes a fixed rig can be very handy.
Thanks Hellracer,

I like the idea of the strut to give the option of a leaner or rigid chassis.

Showing part of my farming background from a couple of decades ago, an adjustable top link from a tractor three point linkage would possibly work as the strut for making the sidecar rigid.

A lighter duty one would be most suitable I'd think, with a quick release set up and a second set of pins along the sidecar chassis somewhere to mount it when the car is being used as a leaner.

The best of both worlds.
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Old 03-13-2013, 04:16 AM   #34
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Originally Posted by FR700 View Post
Well that really makes it easy to remove wheels to fix flat tyres.
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Old 03-13-2013, 05:10 AM   #35
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Quote:
Originally Posted by Ockrocket View Post
Thanks Hellracer,

I like the idea of the strut to give the option of a leaner or rigid chassis.

Showing part of my farming background from a couple of decades ago, an adjustable top link from a tractor three point linkage would possibly work as the strut for making the sidecar rigid.

A lighter duty one would be most suitable I'd think, with a quick release set up and a second set of pins along the sidecar chassis somewhere to mount it when the car is being used as a leaner.

The best of both worlds.
That is exactly as I plan to build the extra strut. I've got a number of M14 top links lying around and plan on using them.
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Old 03-13-2013, 05:40 AM   #36
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Great thread! Hat's off to your talent! .... unexpected use of an HP2.
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Old 03-14-2013, 04:17 PM   #37
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Uhhhm That's not mine.
I would like to own a HP4 but a HP2 is not my cup of tea. I'm not able to become friends with 2 cylinder bike's to my regret. I've tried many but sold them all within weeks. I'm a 4 cylinder guy. I'm willing to try a 3 cylinder though.
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Old 03-15-2013, 01:42 PM   #38
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You're missing the best part of motorcycling.
Four cylinders are good for compact cars. Except when it is a flat four of course.

Not much progress here.
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Old 03-17-2013, 03:25 AM   #39
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4 cylinders in cars? Neh, I like 5 cylinders way better!

Indeed not much progress. Too little time and too much to do.
I've shortened a K100 front axle to mount the sidecar wheel to. This worked out very well. I'm busy with some reinforcements on the frame and I've milled a number of parts for mounting the hack to the BMW. I was planning on using some used top links I've got but I decided to order new ones with a different thread because I can use the same M20 thread everywhere on the combination. The old top links have M20x1 thread where all the other M20 thread I'm using is M20x1.5.
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Old 03-17-2013, 03:30 AM   #40
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Quote:
Originally Posted by Hellracer.nl View Post
4 cylinders in cars? Neh, I like 5 cylinders way better!

Indeed not much progress. Too little time and too much to do.
I've shortened a K100 front axle to mount the sidecar wheel to. This worked out very well. I'm busy with some reinforcements on the frame and I've milled a number of parts for mounting the hack to the BMW. I was planning on using some used top links I've got but I decided to order new ones with a different thread because I can use the same M20 thread everywhere on the combination. The old top links have M20x1 thread where all the other M20 thread I'm using is M20x1.5.
5 cylinders is still three less than ideal.

V8 muscle all the way.
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Old 03-17-2013, 03:36 AM   #41
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Until you have to stop for gas. Again. And again. And again and again. And since gas is extremely expensive here, Ill stick to 5 cylinders.
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Old 03-17-2013, 09:19 AM   #42
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5 cylinders is still three less than ideal.

V8 muscle all the way.
Four is fine. Just make sure there is much less weight to tow.
Way more fun in the twisties/Alpes and cheaper too.

Let's not even talk about what most of these V8 muscles call a chassis or suspension
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Old 03-17-2013, 09:35 AM   #43
Willi-Jens
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Yes, Cowy slightly overdid it that afternoon. Just look at the tyre marks
But boy he can ride it
Just a fun weekend those days. Seeing the faces when we passed with 19 leaners was well worth it.

regards

Jens
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Old 03-18-2013, 02:56 PM   #44
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And the kid is saying, "Dad, there's a leak in the sump gasket - AGAIN: bloody BMWs!"....
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Old 03-18-2013, 04:54 PM   #45
FR700
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Originally Posted by Willi-Jens View Post
Yes, Cowy slightly overdid it that afternoon. Just look at the tyre marks
But boy he can ride it
Just a fun weekend those days. Seeing the faces when we passed with 19 leaners was well worth it.

regards

Jens


Thank you for the back story to the picture


Good to see people just having fun and just goofing off with their sidecars.

I've been lucky ... no cameras around to catch mine

.
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