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Back in 2005 I built a bt80 sized upscale of the FlisKits Praetor. TTW wall fins. The fins are carbon fiber with Kevlar honeycomb sandwich....edged in basswood.
The thing is still in one piece after all these years and still flies great. The biggest motor I've flown it on is an AT G79W. Rocksim says that's about 390 ft/sec max velocity. Get's a cool whistle on the way up.
SO…..I'd like to do an even bigger upscale using 4" LOC tube. That will put the total fin span at approx. 33" across. Each fin's span at about 14.5 inch.
If I can build it and select motors to keep the velocity the same range as my mid-power version do you think It will be OK? I think the key to it's longevity is that it is very light weight for it's size. I'd have to keep the 4" version light also.
Here are some pics of the mid powered version. Will this scale up OK? What are your thoughts?
The thing is still in one piece after all these years and still flies great. The biggest motor I've flown it on is an AT G79W. Rocksim says that's about 390 ft/sec max velocity. Get's a cool whistle on the way up.
SO…..I'd like to do an even bigger upscale using 4" LOC tube. That will put the total fin span at approx. 33" across. Each fin's span at about 14.5 inch.
If I can build it and select motors to keep the velocity the same range as my mid-power version do you think It will be OK? I think the key to it's longevity is that it is very light weight for it's size. I'd have to keep the 4" version light also.
Here are some pics of the mid powered version. Will this scale up OK? What are your thoughts?