Ady Hayward Posted March 1, 2012 Share Posted March 1, 2012 Hi Folks, My Javahawk will be done soon so I was looking at what else might be buildable in the time available and the Frog 45 mkII came to light. Does anyone have any idea what the differences are between the Mk I and Mk II? Best regards Ady Quote Link to comment Share on other sites More sharing options...
Ady Hayward Posted March 2, 2012 Author Share Posted March 2, 2012 Well, I seem to have drawn a blank there. As it happen I noticed that the Ben Buckle plan offered says its a FROG 45 (1948) and not the Frog 45 mkII which is some years later so I've ordered that in the hope it is the earlier version. Hopefully it will have less sheet in the sides and more stringers etc. I can but hope. Ady Quote Link to comment Share on other sites More sharing options...
Mike Rolls Posted March 4, 2012 Share Posted March 4, 2012 Ady The Mk i was designed around the radially mounted Frog 175 petrol motor - and when they came along it would accept the radially mounted 100 and 180 diesels and the 160 glow. The Mk II was redrawn at the front to accept beam mounts for the frog 150 diesel (by the time it came out the radila mounted motors were very definitely old hat). I haven't been able to find a clear enough plan of the Mk I to be able to see if there were any other chanes, I am afraid. HTH Mike Quote Link to comment Share on other sites More sharing options...
Mike Rolls Posted March 4, 2012 Share Posted March 4, 2012 PS - didn't read all the way through your second post- the very poor reproduction of the plan on the BB site is of the Mk I - hopefully so is what arrives Mike Quote Link to comment Share on other sites More sharing options...
Ady Hayward Posted March 4, 2012 Author Share Posted March 4, 2012 Hi Mike, Many thanks for the response. i had hoped that there would be less sheeted structure, as it would look very nice with a stringered fuselage rather than the all sheet type that is. The only deviations to plans will be addition of inset ailerons and elevators, and the motor mounting for an outrunner motor. Ady Quote Link to comment Share on other sites More sharing options...
Mike Rolls Posted March 4, 2012 Share Posted March 4, 2012 Sounds good! Mike Quote Link to comment Share on other sites More sharing options...
Ady Hayward Posted March 12, 2012 Author Share Posted March 12, 2012 I have both sets of drawings now,for the Mk1 and Mk2. The Mk1 is exactly as Mike described. It also looks like the MK2 was simplified as well in that many of the Mk1 formers are laminates of ply and balsa, whereas the Mk2 is all balsa except where plywood is necessary. Where this is leading is that my version will be a Mk1 1/2 using the best compromise (To my mind at least) of parts from both drawings. I'll be using a conventional leading edge as opposed to the kit ones that are grooved along the centre to accept the noses of the ribs. One curiousity though. Both drawings omit the tailplane sections (Ribs) so a bit of licence will be needed to draw up a set of ribs. (Next weeks task). Ady Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted June 21, 2013 Share Posted June 21, 2013 Hi Ady I built my Frog 45 a few years ago now. Its still flying well . Power is a Frog 150 diesel fromthe mid 50's.I Looked for a plan for ages and found the Ben Buckle plan first.It is a lot simpler than the original and apparently lighter.My build blog on our clubs forum is attached if interested.I covered it in Lightspan and its still looks smart after many flights and cleaning sessions . The diesel oil is realy messy.Good luck with your project . Edited By Engine Doctor on 21/06/2013 09:22:49 Quote Link to comment Share on other sites More sharing options...
Foxfan Posted July 23, 2013 Share Posted July 23, 2013 The Frog 45 is available on the Outerzone free plans site. I downloaded it and lots of others only last night! PM me for a link if you don't already have it. Martin Quote Link to comment Share on other sites More sharing options...
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