Peter Sripol ultralight build

[fly_tornado]

Peter is a well known RC builder, now scratch building his own design

 

 

 

[fly_tornado]

starting to look like a biplane

 

 

 

[SDQDI]

I enjoyed all of that FT except the full power runs inside in a shed that dirty, that made me a tad nervous. Not that there is anything wrong with a messy workplace, all of mine are at least that bad, but just the fact that there are so many things that could've picked up or gone wrong but anyway still entertaining and good on him for doing what he is doing. Certainly outside of my patience capabilities.

 

 

[onetrack]

I reckon he's a bit short on motor and propeller size, and he could have trouble getting anything like a reasonable rate of climb. There's always the chance of strong headwinds to help him, I guess.

 

 

[winsor68]

I reckon he's a bit short on motor and propeller size, and he could have trouble getting anything like a reasonable rate of climb. There's always the chance of strong headwinds to help him, I guess.

I doubt he will do any flying out of ground effect. I kind of hope not anyway.

 

 

[Capillatus]

 

I found these two videos of Peter on liveleak when he tests his aircraft. He will probably upload a new youtube video of this test flight soon.

 

https://www.liveleak.com/ll_embed?f=bb3c063fdbdf

 

https://www.liveleak.com/ll_embed?f=f960c2a1a5e6

 

 

[onetrack]

Well, kudos to Peter for actually getting his rig off the ground and back down again, without crashing and injuring himself - but as I commented earlier, his ROC sure ain't anything to write home to his Mum about.

 

In fact, "barely measureable ROC" is what comes to mind, watching that video.

 

 

[pylon500]

Just missed the live stream of the test flights (at night), suggested that the props didn't sound like they were absorbing all the power available, little bit more pitch maybe.

 

Also suggested he needs to let the nose down a tiny bit after lift off and gain a bit more speed.

 

The aircraft looks to be flying just on the edge of the drag bucket.

 

We shall see.

 

It's odd, modellers pick up full size flying pretty quick.

 

Full size pilots don't get RC flying nearly as quick.

 

 

[winsor68]

Way to go Spirol.

 

 

[Downunder]

Take off down wind?

 

second vid, 20 seconds in....

 

 

[geoffreywh]

Nah, nasty crosswind. look how he fights direction as the tail lifts and the nose swings right. Not sure about the changes to power settings during take off. Looks to me like he wants to stay near to the ground.

 

 

[fly_tornado]

I thought the plan was just to work out the CG

 

 

[Marty_d]

[Marty_d]

That undercarriage is VERY short, looks like he'd only have to have a wing down about 15 degrees on touch down to hit the tip.

 

 

[Old Koreelah]

That undercarriage is VERY short, looks like he'd only have to have a wing down about 15 degrees on touch down to hit the tip.

He needs bent wings...

 

 

[SDQDI]

He needs bent wings...

Is that like telling an actor to break a leg:yikes:

 

 

[onetrack]

He needs bent wings...

Is anyone up for a wager on how long it will be, before he has really bent wings??

 

 

[Old Koreelah]

No, this sort of bent wing, which clears the ground even when dumb pilots perform unnatural landing acts:

 

 

 

[winsor68]

He is crazy wanting to take it around the circuit.

 

 

[kasper]

Add more battery and fly it out of ground effect ...

 

 

 

[geoffreywh]

Looks good enough! I wish he would get a bit more altitude for those turns