Soliciting airframe suggestions for a spare speed-400 & mini flight-pack...

"Terry" wrote in news:e7-dnRJaJtL6DJ7ZnZ2dnUVZ snipped-for-privacy@giganews.com:

Hobby Lobby 55" span Miss Stik Senior:

Wow, thanks a bunch for the suggestion! Golden Age class and at $24.90 it's an extremely nice deal to boot!

I love stick-built and it will also remind my dad of his rubber powered "Ms. America" built back in the late '30's. It's real tempting to go all the way, build it light with an outrunner and LiPo's, and give my dad his first taste of flying. Guess I can always retrofit if he shows interest.

Speaking of, you might have an answer for me... The associated articles state a speed-400 is acceptable but one mentions nothing about a gear-drive while the other makes reference to it. Hoping you or someone might have knowledge and be able to suggest a proper application (yes/no, gear ratio, etc.). I ask this because as you can no doubt tell I'm ready to place my order. ;-)

Regards

use 3s LIPO pack, and gears and a big coarse pitched prop for old timers.

Thanks! Much appreciate the info.

Just looked at the plane you are considering. Yes, that will be ideal for a deep geared 400.

Building something from the wartime era myself...originally designed for an Ohlsson .23 sparker, now a speed 400 on LIPOS is more than enough.!

With prop RPM somewhere around 4000, you will be whispering around with that.

Note that if you use a GWS box, and motor, those are timed 'the wrong way round' - loosening the backplate tabs and hauling the backplate around gives better RPM and less current..and a lot less heat..

I prefer to use Graupner or Permax 400's and MPjet boxes.

That additional info and support bodes well.

Funny that you mentioned war-era. This flight-pack I'm recycling was originally installed in an all balsa sport-scale P51B (29", 16oz) built from plans. That, having been in the days before affordable "hot" 400's, brushless, outrunners and Li-Poly, left much to be desired in the way of performance. Due to the wingloading and P/W ratio 75%-100% power was the norm resulting in a max of 2.5-3 minute flight durations. Looking forward to revisiting that model with some lightweight and more powerful upgrades...after the Miss Stik.

...shame compatability is nil betwixt brushed/brushless and nicad/lipo's when it comes to controllers, chargers, etc.

Wish you the best on your latest build, I'm sure it will be a fine one! Thanks again for sharing your knowledge!

Best Regards

I'm thinking of building somewhere up the road, 50" span Scientific Varsity, a pre-WW2 shoulder wing model, rather pretty. Original used an engine such as an Ohlson and Rice (O&R) .23. It would be an ideal candidate for a geared 400.

Hey Oki! You not tempted to put that pristine Gilbert .074 in that scratcher? Gotta fire it up some day! ;-)

I'm familiar with the Vickers Varsity (post war low wing twin) but not a shoulderd "possibly" older sister. I myself love scale/semi-scale pre-WW1 up through the the WW2 era. I think these could all be made to fly quite realisticly with electric when built light enough. Also, we need more balsa out there so I hope you get to buliding that one in the near future. Sounds sweet! Soon as I get e-oriented I'll be joinig you in building my e-squadron.

Best Regards, Terry

Have a look here

The Gilbert could do it, but prefer throttle.

I could be wrong, but I don't think there's any relation between the Vickers and the Scientific versions. Scientific's resembled a racer with razorback style fuselage. It was built light. I'd cover the thing with tissue style iron on like Litespan.

It's one of those back burner projects, so first things first (have the Miss Stik Senior to work on).

Nice, but personally I prefer the Varsity, a rather sporty but pretty looking plane, unlike the high wing cabin or pylon types.