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Old 04-25-2010, 09:29 PM   #31
whd721
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It is interesting to note that Wes Weber has both mounts on the center line. Gary Kramer has the front mount up ~5" and the rear mount offset ~2" to the sidecar. The Kalich is in the middle, with the front mount up several inches and the rear mount on center line.

All three seem well satisfied with the results. The sidecar mounting locations must not be super critical.

The Kalich frame construction appears very professional. The bike subframe mounting points to the frame appears less robust than I would have thought, but they have experience to back up their design.

Thoughts?
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Old 04-25-2010, 09:32 PM   #32
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Quote:
Originally Posted by whd721
The Kalich frame construction appears very professional. The bike subframe mounting points to the frame appears less robust than I would have thought, but they have experience to back up their design.

Thoughts?
There are other parts of the Kalich mounting hardware that is not shown in the picture above. This part of the frame is just the core. Wait until you see the whole thing before you make such a judgment.
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Old 04-26-2010, 05:05 AM   #33
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Quote:
Originally Posted by Mac
There are other parts of the Kalich mounting hardware that is not shown in the picture above. This part of the frame is just the core. Wait until you see the whole thing before you make such a judgment.
Is there eye bolts on the frame? It looks like it, would these be to make a rigid if you wanted?

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Old 04-26-2010, 05:24 AM   #34
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Quote:
Originally Posted by garry_kramer
Is there eye bolts on the frame? It looks like it, would these be to make a rigid if you wanted?

Garry

The rig is not designed or built to operate as a rigid frame, so those eye bolts you see are just "mounting points" and are not approved by Ralph Kalich to connect to the bike.

However, if I find myself on an icy road, it is possible that these points may be used to assist me out of that situation (at my own risk, of course).
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Old 04-26-2010, 07:17 AM   #35
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Hey Mac!

What's the tubing diameter of the frame? Maybe a couple of different sizes from the pic.
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Old 04-26-2010, 09:41 AM   #36
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Quote:
Originally Posted by AceRph
Hey Mac!

What's the tubing diameter of the frame? Maybe a couple of different sizes from the pic.
The round and square tubing is 35mm (1.4"), except for the subframe and the swingarm which are 40mm (1.6") round.
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Old 04-26-2010, 12:09 PM   #37
Matt Gent
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Both pivots are mounted in single-shear. Sure is a lot easier to set up that way, but its not good design practice for prime-reliant fasteners.
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Old 04-26-2010, 12:26 PM   #38
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Quote:
Originally Posted by Matt Gent
Both pivots are mounted in single-shear. Sure is a lot easier to set up that way, but its not good design practice for prime-reliant fasteners.
I believe the single shear strength of a grade 8, 5/8" bolt is about 28,000 lbs. There are 2, one for each Hiem joint.

Look here Post # 52 on my flex.

http://www.advrider.com/forums/showt...=525279&page=4

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garry_kramer screwed with this post 04-26-2010 at 01:44 PM
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Old 04-26-2010, 12:32 PM   #39
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Quote:
Originally Posted by Matt Gent
Both pivots are mounted in single-shear. Sure is a lot easier to set up that way, but its not good design practice for prime-reliant fasteners.
Gent, did you stay at a Holiday In Express last night? Ball joints are a very tried, true, and strong connection, and are used by many experienced designers and engineers of all sorts of mechanical devices. How is that first build of yours coming along, anyway?
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Old 04-27-2010, 03:06 PM   #40
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Quote:
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I'll keep that offer in mind, Jens. Just don't hold your breath...
I'm just looking after your license, so don't put it off for too long ;)

on the other hand summer is coming up and you will soon have a leaner to break in, so maybe you should put it off for some time and I offer to do that for you ;)

Quote:
Originally Posted by Mac
So, here is a teaser pic. This is the frame, with the subframe connected on the left, sitting on the crate lid. Total frame/subframe weight is 77 lb together. The wheel and mounted tire (not shown) weighs 18 lb. without the tub, we're still under 100lbs. Not bad.
total is about 70 kg (about 150 - 160 lb), empty hardly noticeable

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Old 04-27-2010, 03:07 PM   #41
Willi-Jens
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We opened an English section in the leaner forum:
http://www.schwenker-gespanne.de/for...ard&boardID=12
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Old 04-27-2010, 03:09 PM   #42
Willi-Jens
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Quote:
Originally Posted by Mac
The rig is not designed or built to operate as a rigid frame, so those eye bolts you see are just "mounting points" and are not approved by Ralph Kalich to connect to the bike.

However, if I find myself on an icy road, it is possible that these points may be used to assist me out of that situation (at my own risk, of course).
Usually the frame doesn't have these connections (maybe just used for transport in your case)...
The frame and the suspension aren't up to running rigid !
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Old 04-28-2010, 05:54 AM   #43
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Minor update:

I stopped by my painter last evening. He's a custom car restorer for a private collector, with 35 years experience, who takes a few side jobs now and then. He should have the show quality paint done in another 15 days or so.

Here it is waiting for a layer of filler to dry...

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Old 04-28-2010, 05:59 AM   #44
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Quote:
Originally Posted by Willi-Jens
I'm just looking after your license, so don't put it off for too long ;)
Before moving to Colorado Springs in 2006, I lived in Germany for four years. I drove an M3 during that time, and became very used to the German driving way. The car was US Spec, so I brought it back with me to the US. Since I was used to driving it at 130-140mph on the Autobahn, I absolutely hated driving it here in the US at 75mph and had to sell it. I also had to sell my K bike, for the same reason, opting for the GSA. I waited 3 years before getting the Audi, or my license would have been in extreme danger.
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Old 04-28-2010, 07:11 PM   #45
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Quote:
Originally Posted by Matt Gent
Both pivots are mounted in single-shear. Sure is a lot easier to set up that way, but its not good design practice for prime-reliant fasteners.
OK, here is the visual answer to your unfounded implication of weakness in the connection points.

The top two pictures are the front, the lower two are the rear. The heim joints thread directly into the sidecar frame.

The front of the subframe has a pin or spindle directly connected. As you assemble it, the spindle inserts inside the heim joint. The heim joints are a 20mm/0.78" hole (for the subframe) and threaded shaft (into the sidecar frame).

The rear of the frame has a large (20mm/0.78") pin which you can see goes into the back of the subframe. Through the center of the pin is the bolt that fixes into the subframe.

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