Any suggestions for one that will fit the huge wing of an ASK-21?
I've gotten a no from MM Fabrication on their wing rigger and still waiting for a response from W&W on whether the IMI will fit.
Just looking for a basic unit that would allow 2-3 people to rig the ship safely instead of the preferably four we've just used.

Thanks

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On 9/12/2022 3:55 PM, 5Z wrote:

Any suggestions for one that will fit the huge wing of an ASK-21?
I've gotten a no from MM Fabrication on their wing rigger and still waiting for a response from W&W on whether the IMI will fit.
Just looking for a basic unit that would allow 2-3 people to rig the ship safely instead of the preferably four we've just used.

Thanks

We're using the IMI Power Rigger (the one with electric up/down) for a
Janus A - big heavy wing - with two people. IMI has several different
wing cradles to choose from, to fit different wing thicknesses. The
up/down and left/right motorized movement is great. What's missing is a
better way to adjust the angle of attack, so to speak: raise/lower the
trailing edge relative to the leading edge, gradually and controllably,
to make the drag pins fit the holes. The stopper that controls how far
the cradle rotates is hard to adjust, and with uneven ground (rather
than flat pavement) it always needs adjustment. And yeah, it's not a
"basic unit", it is expensive.

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On Monday, September 12, 2022 at 3:55:13 PM UTC-4, 5Z wrote:

Any suggestions for one that will fit the huge wing of an ASK-21?
I've gotten a no from MM Fabrication on their wing rigger and still waiting for a response from W&W on whether the IMI will fit.
Just looking for a basic unit that would allow 2-3 people to rig the ship safely instead of the preferably four we've just used.

Thanks

I built one for our '21. It is just like the Wing Rigger that I think now is made by M&M. They may not have a mold for the saddle.
IMI likely will have one available. Skip all the fancy lift stuff. It really isn't needed and adds a lot of cost. Mostly you need to rigger to do the carrying until the wing is inserted. We did make a wing stand with a crank up lifting function to help
get the pins in. It was made by mounting a trailer front wheel jack inverted on a substantial wing stand. Nice but not really a big deal. if the rigger pits the wing at about the right elevation it is an easy lift off to the wing stand.
We like it better with the rigger.
UH

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For large glider wings such as the G-103 and ASK-21, the thickness of the wing is a limiting factor. I bought the rights for manufacturing the WingRigger from Steve Koerner in 2014. I have made very few WingRiggers for the G-103 and ASK-21, but I feel
that the shape of the large saddle I can offer is not particularly suited to heavy, thick wings. It does fit (somewhat) but to adequately match the leading edge curvature, the support point must be much farther outboard than usual. This means that there
is a lot more weight that has to be supported at the root of the wing. In essence, the operator of the WingRigger has to handle a higher percentage of the wing weight. It is not insurmountable, but the wing is still rather heavy to handle. Another
problem arises from the fact that the G-103 wing is mounted rather low on the fuselage, meaning that a much shorter WingRigger chassis is needed. As a result, a shorter gas spring is required, and a shorter spring means a reduced stroke length, which
translates to a reduction in the vertical adjustment range. In short, the WingRigger I offer is less suitable for the large two-place ships. I will still build them for customers who cannot find a suitable alternative, but they are most definitely not an
ideal solution. One thing you have to remember when using any rigging aid with these ships is that you are not actually using a "one man rigger," you are using a "one LESS man rigger."

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Our club bought one of Mark's Wing Riggers for our three Grob 103's. Between annual inspections, bi-annual cleanings and waxings and summer relocations we do about 10 disassembles and assemblies per year. The club members love the wing rigger. It makes
the process much less arduous. For a Grob 103 I would call it a "two LESS person rigger".

Larry


On Monday, September 12, 2022 at 7:05:36 PM UTC-7, Mark Mocho wrote:

For large glider wings such as the G-103 and ASK-21, the thickness of the wing is a limiting factor. I bought the rights for manufacturing the WingRigger from Steve Koerner in 2014. I have made very few WingRiggers for the G-103 and ASK-21, but I feel

that the shape of the large saddle I can offer is not particularly suited to heavy, thick wings. It does fit (somewhat) but to adequately match the leading edge curvature, the support point must be much farther outboard than usual. This means that there
is a lot more weight that has to be supported at the root of the wing. In essence, the operator of the WingRigger has to handle a higher percentage of the wing weight. It is not insurmountable, but the wing is still rather heavy to handle. Another
problem arises from the fact that the G-103 wing is mounted rather low on the fuselage, meaning that a much shorter WingRigger chassis is needed. As a result, a shorter gas spring is required, and a shorter spring means a reduced stroke length, which
translates to a reduction in the vertical adjustment range. In short, the WingRigger I offer is less suitable for the large two-place ships. I will still build them for customers who cannot find a suitable alternative, but they are most definitely not an
ideal solution. One thing you have to remember when using any rigging aid with these ships is that you are not actually using a "one man rigger," you are using a "one LESS man rigger."

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On Thursday, September 15, 2022 at 9:10:26 AM UTC-6, [email protected] wrote:

Our club bought one of Mark's Wing Riggers for our three Grob 103's. Between annual inspections, bi-annual cleanings and waxings and summer relocations we do about 10 disassembles and assemblies per year. The club members love the wing rigger. It makes

the process much less arduous. For a Grob 103 I would call it a "two LESS person rigger".

Glad you like it. The large saddle shape seems to match the G-103 wing curve better than the ASK-21, which has a much fatter wing. I still am uncomfortable trying to make it work with the ASK-21. It CAN work, but you have to place it farther out on the
wing to get an acceptable fit. YMMV

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On Monday, September 12, 2022 at 7:05:36 PM UTC-7, Mark Mocho wrote:

For large glider wings such as the G-103 and ASK-21, the thickness of the wing is a limiting factor. I bought the rights for manufacturing the WingRigger from Steve Koerner in 2014. I have made very few WingRiggers for the G-103 and ASK-21, but I feel

that the shape of the large saddle I can offer is not particularly suited to heavy, thick wings. It does fit (somewhat) but to adequately match the leading edge curvature, the support point must be much farther outboard than usual. This means that there
is a lot more weight that has to be supported at the root of the wing. In essence, the operator of the WingRigger has to handle a higher percentage of the wing weight. It is not insurmountable, but the wing is still rather heavy to handle. Another
problem arises from the fact that the G-103 wing is mounted rather low on the fuselage, meaning that a much shorter WingRigger chassis is needed. As a result, a shorter gas spring is required, and a shorter spring means a reduced stroke length, which
translates to a reduction in the vertical adjustment range. In short, the WingRigger I offer is less suitable for the large two-place ships. I will still build them for customers who cannot find a suitable alternative, but they are most definitely not an
ideal solution. One thing you have to remember when using any rigging aid with these ships is that you are not actually using a "one man rigger," you are using a "one LESS man rigger."

IMI says they are able accommodate many different glider types, including two-seaters:

NEW - special non-universal wing holders for Arcus doubleseater and modern flapped singleseaters (Ventus 1/2, ASW-27, ASG-29, ASH-26/30/31, JS-1, Nimbus 3/4, Quintus, Antares, Shark) available on stock from February 2012! For those pilots, who want to
have fully universal One man rigging system for club use or sharing with friends, the older universal wing holders are also on stock and compatible with above named gliders, only with aesthetic limitations (gap between wing and holder etc.).

http://www.imi-gliding.com/products/one-man-rigging-system.html

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