Circle Burner · Jul 03, 2003 04:28 PM
#0 sourceI was thinking about using a 40FP or a Brodak 40.
Thanks in advance!!!
John
Stuka Stunt Main Forum · 17 of 17 known posts recovered
I was thinking about using a 40FP or a Brodak 40.
Thanks in advance!!!
John
John,
I am currently running a Fox 36 (CS Mk V)in mine with plenty of power. Last time I weighed it, it was around 42 oz. It would seem that the 40s would work well. Note that mine is the CLC version, but that should not matter too much. Good luck.
John
While a Zilch X has retired my own Viking, the latter was built for, and still has installed, a Fox 35. It flies well enough that a couple years ago I could/woulda/shoulda won the OTS event at the NW Regionals. And may well have done so except for Chris Cox borrowing the model, putting up one test flight and then winning the event.
While such may have been limited to my kit, or crummy building skills, or something else unknown to me at this time, I did end up with "S-" shaped ribs in one panel. At one point in time the Viking was flying a little bent, I was pulling warps in and out by heating the Micafilm, just as one would do with any other film. This lead to strenuous duty for several ribs, leading Heavy Stunt to one time ask, "Is that the kept-balsa building process which left your wing ribs all squiggly?"
The ribs for my Zilch Z were undercut 1/16", narrow capstrips installed. I don't believe anyone has ever noticed this change; the wing simply looks as if it were built with 3/32" ribs, even though the capstrips are nearly 1/8" wide.
Dan Rutherford
I just went and looked at the Brodaks' site...aaahhhh...whats a Viking?
I missed it...if it's at the Brodaks site, I went right past it...and am not familiar with the Viking, is this an OTS model?
Picture would help,
Thanks
The earliest of these was flying when large sparkies were still used, so plenty of the oldest Vikings had 60's mounted on them. It came with husky 1/2 by 1/2 maple bearers, and 1/4" balsa fuselage sides, but its production overlapped well into the 1950's, when it was flown with glow 29's and 35's, and wasn't considered too large for those.
(That latter was added because of Watt Moore's comment, as follows:
> I have a ST 46 in my Viking, works fine. The 40 size engines seem
> too weak to pull this plane with its big wing. Built feather-lite,
> the 40 may be ok, build it, fly it, and find out.
. . and I didn't agree with that at all, although there were 29's I would've considered to be at best "marginal" for a Junior Streak in 1955, like any OK Cub {or any O&R} smaller than a 60.)
.
Kiwi
**
J

Steve
John
.
Kiwi
**
Yes it is wrong. I have one of the Brodak kits too. John Ramsden showed me a picture of two he build with leading edge sheeting that only goes back about 1&1/4 or 1&1/2 inches from the leading edge. That one looks a lot more like the Viking is suppose to look in the wing planform. He also used 1/16 X 1/8 or 3/16 cap strips. I plan on duplicating what John did with the Leading Edge sheeting. It wouldn't be hard to do with the Brodak Kit version. Just move the 1/4" spars forward and cap strip over the old spar holes. Also since the Viking wing has some center section strength issues I plan to use some sub-sparring in the center section and use the suspension method to mount the bellcrank. Hope this helps some.
Jim Pollock
It does strengthen the wing, however it changes how the wing planform looks from the leading edge front view. John's method does not change this - the covering sag between the ribs is still present with John's method. I don't think a Brodak kit version would be legal under GSCB rules.
Jim Pollock
Jim Pollock