I also would like the plans for the PM Woodhopper. They are no longer
available and although the woodhopper was a death trap, I've always wanted
plans from a sentimental standpoint.
Thanks for reading.
(Leonard D. Wood)
I found someone who had a set of plans to sell me for the Sky Pup. I sure
like the looks of this little craft. Even though the lack of ailerons
scares me, I guess engineers know more about aircraft design than I do.
However, I'm open for all kinds of other ideas. I like the Mini-Max but
it's too much time and money for me. I do a net search for the ragwing but
I'd like it if someone can toss a URL my way. Thanks.
>I've been interested in Dan Grunlough's (sp?) page with the Sky Pup
>ultralight for quite some time. Beings I work a lumber yard and have access
>to all kinds of lumber at a good price, I'd like to try building this thing.
>It looks neat and fun. The plans are $70 and I thought that since hundreds
>or even thousands of copies of plans have been sold, that someone out there
>might have the plans that they bought, kicked around, and left to gather
>dust on the shelf. I'm interested in buying an original set of plans and
>not a pirated copy. I'm just trying to save a couple bucks in case anyone
>wants to cut me a deal.
>
>
guy here locally has a skypup for sale...... if anyones intrested I can get
the info. Its parked at our fly site.
I was astounded at the prices for these little crafts. The engines cost
more than the plane does and the materials that go into the Sky Pup are
cheap (moneywise). People have racked up over 500 hours and here, at 6
years later, Dan Grunloh has damn near a 1000 hours on his plane and it's
still flying great. It seems the #1 problem with the Sky Pup is landing
gear snapping off. It's easy to see why - with it's 2 axis design and
people getting into cross winds - it overloads one wheel and <SNAP> - there
goes your axle. But with some minor mods and better flying skills, it can
be avoided.
I know there are newer, faster, better, spiffier planes one can get into but
they ain't as affordable as the Sky Pup is - I don't want to travel or do
anything other then fly lazily and see the town from above in something I've
made - that is all reward enough in itself.
Overall, it looks like a fun little plane to build and fly.
BTW: What's the number for the guy with the skypup that wants to sell?
Abq Ray
-----== Posted via Deja News, The Leader in Internet Discussion ==-----
http://www.dejanews.com/rg_mkgrp.xp Create Your Own Free Member Forum
There were actually 29 issues. Send me your address and I will send
you the missing newsletter.
>years later, Dan Grunloh has damn near a 1000 hours on his plane and
>it's still flying great.
Actually it's Bob Schafer of Boise Idaho who has 1000 hours on his Sky
Pup. There are a few others in the 700 range but I only have 215
hours on mine over a twelve year period. I did a lot of other stuff
too during that period.
>It seems the #1 problem with the Sky Pup is landing
>gear snapping off. It's easy to see why - with it's 2 axis design
>and people getting into cross winds - it overloads one wheel and
Right. The axle is a one piece solid wooden beam. You have to land
them pretty hard to break it. It might be better if it was laminated.
Most breakages are in the backwards direction due to hitting a hole
or ditch. Crosswind landings will more likely collapse the motocross
bicycle wheel.
The plans call for a maple landing gear which is very strong but not
very flexible. Many have switched to white ash which is springier
and can take more bumps. No one has reported failing the ash gear.
The maple gear doesn't bend very much. You would not want a real
flexible shock system because the tractor prop might strike the
ground on a bounce. I have only 9 inches prop clearance tail down
and FIVE INCHES tail up in a wheel landing. I have never hit the
tips on anything but tall weeds. For comparison the Kolb Ultrastar
(the low engine version) also has only about 5 inches prop clearance
and uses no shocks at all, just the air in the tires.
Everything about airplane design involves compromises.
--------------
Daniel Grunloh (gru...@uiuc.edu)
http://www.staff.uiuc.edu/~grunloh