Ultimate biplane

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25 May 2014 00:03 - 25 May 2014 00:04 #1 by Keith T
Ultimate biplane was created by Keith T
Just a photo for starters - this far today - more to come as it progresses.
I'll add more details at a more reasonable hour!!
Keith

With sufficient thrust, pigs will fly!
Last edit: 25 May 2014 00:04 by Keith T.

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25 May 2014 00:09 #2 by old fart
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What photo?

There is nothing like a dream to create the future.

Electrickery is the work of the devil.

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25 May 2014 08:27 - 25 May 2014 08:28 #3 by Phil Wood
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Hoverfly wrote: Just a photo for starters - this far today - more to come as it progresses.
I'll add more details at a more reasonable hour!!
Keith

Try again Keith, any problems, just shout for help. Don't worry about messing up the thread, we'll tidy up later. ;)

Pol.

I just own the forum .... you guys make it great thanks.
Last edit: 25 May 2014 08:28 by Phil Wood.

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25 May 2014 08:49 #4 by Keith T
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Morning gents - thanks Pol. They are 8mb files - way too big, so when I get a chance later, I'll shrink some & post them.
Just too late to get it done last night.
Keith

With sufficient thrust, pigs will fly!

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25 May 2014 23:32 - 25 May 2014 23:34 #5 by Keith T
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Here we go.....



With sufficient thrust, pigs will fly!
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Last edit: 25 May 2014 23:34 by Keith T.
Thanks: Klipkopwildlife, Quorneng, blue123, old fart

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25 May 2014 23:35 #6 by Keith T
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Now is that 'bootylicious' or what?
Keith

With sufficient thrust, pigs will fly!
Thanks: Eric

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26 May 2014 12:42 #7 by Eric
Replied by Eric on topic Ultimate biplane
It's a very short nose - get all the heavy bits well forward! :woohoo:

if you are calm and collected when all about you are going berserk - you've missed something important!
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26 May 2014 19:11 #8 by Keith T
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I'm going to put a 91 4s in so the weight should be sufficient, I hope, but thanks for the heads-up :)
Keith

With sufficient thrust, pigs will fly!

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26 May 2014 19:25 #9 by Si_B
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I had one of these with a 70 four stroke and it definitely needed more omph....so the 90 should be good.

Keep an eye on the wing incidences. My struts were not correct and the model would fly tail down and it took a bit of tweaking to get her sitting nicely. It flew well, but could bite on the landing.
Great looking model on the ground and in the air.

Simon
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26 May 2014 20:06 #10 by old fart
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Maybe a 1.20 would be better. :unsure:

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26 May 2014 21:05 #11 by Keith T
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Si_B wrote: I had one of these with a 70 four stroke and it definitely needed more omph....so the 90 should be good.

Keep an eye on the wing incidences. My struts were not correct and the model would fly tail down and it took a bit of tweaking to get her sitting nicely. It flew well, but could bite on the landing.
Great looking model on the ground and in the air.

Simon


Thanks Simon
I used a digital inclinometer from a mate and would defy anyone to get it exact!
The thing is wonderful, hand built, but not even square with itself - the two sides of the 'one piece' horizontal stabiliser were different, for example. I got it the best I could - talking about .08 difference between the 3 surfaces.
I hear they need some power and speed at landing......?
Cheers
Keith

With sufficient thrust, pigs will fly!

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26 May 2014 21:07 #12 by Keith T
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Old Fart wrote: Maybe a 1.20 would be better. :unsure:


Get thee behind me......! :evil:
I think you might be right though - if it would fit!
Cheers
Keith

With sufficient thrust, pigs will fly!

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26 May 2014 21:31 #13 by Si_B
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I think you would struggle with the 120....prop clearance springs to mind!!

Don't remember it coming in fast, but mine tended to flick if you get carried away with the flare on landing. Always enjoyed mine, only sold it due to another club member making me a silly offer and the fact I did not want to strip it out to fit a bigger motor.

Cheers,
Simon
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26 May 2014 23:02 #14 by Keith T
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Sounds like stick with a 90 then!
Thanks Simon
K

With sufficient thrust, pigs will fly!

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29 May 2014 13:22 #15 by Keith T
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These shots show the tail wheel assembly.
Really flimsy and therefore removed, otherwise I'm sure it would simply rip the tail off on the first landing.
The nylon 'hinge' can just be seen by the blue section - this was what the straight wire went through and the L shape was buried in the balsa rudder about an inch beneath that nylon. The angled stretch to the wheel, rested on the base of the rudder. You can see where I epoxied it.
Absolutely hopeless!
Keith




With sufficient thrust, pigs will fly!
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Thanks: Klipkopwildlife, old fart

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