Re: [Aus-soaring] electric self launch

2016-09-20 Thread Matthew Scutter
I don't understand why the ASG32 EL can't self launch - the quoted 2m/s is a better climb rate than many self launchers. On Wed, Sep 21, 2016 at 4:23 PM, DMcD wrote: > Didn't I read in Bernard Eckey's recent ad in Soaring Australia that > electric SLGs did not work and that Schleicher's had deci

Re: [Aus-soaring] electric self launch

2016-09-20 Thread DMcD
Didn't I read in Bernard Eckey's recent ad in Soaring Australia that electric SLGs did not work and that Schleicher's had decided to just make an electric sustainer. Maybe electric only works for gliders like the Silent which are around 150 kg in basic glider form and 210 kg in advanced (electric)

Re: [Aus-soaring] Ventus cM: Ib Braes

2016-09-20 Thread Mark Newton
On Sep 21, 2016, at 10:38 AM, Mike Borgelt wrote: > Oh, yes, they are just machines. Inanimate objects. When I acquired the RV, my partner almost immediately anthropomorphized it: Its rego is SOL, so, of course, its name needs to be “Solly.” The fairings on the wheels (spats or pants, depend

Re: [Aus-soaring] electric self launch

2016-09-20 Thread Mike Borgelt
Jim, That is the concept for Glofly, now renamed GoFly and seeking funding in the US. Could be done on a normal glider in the wheel. You could taxi it out to the takeoff point by walking the wingtip with a little wireless controller in your hand. No towbars, wing walkers etc required. By s

Re: [Aus-soaring] electric self launch

2016-09-20 Thread Jim Staniforth
Sounds like an outrunner would be the choice for a glider wheel, enough acceleration to allow a jet sustainer to self-launch. Jim -- Original Message -- From: "Mike Borgelt" To: "Discussion of issues relating to Soaring in Australia." Sent: 9/20/2016 5:11:27 PM Subject: Re: [Aus-soa

Re: [Aus-soaring] Ventus cM: Ib Braes

2016-09-20 Thread Mike Borgelt
There were only 6 or 7 Ventus C A fuselage version built. One was written off in the US due to a disconnected flaperon on one side. Fortunately at 7000 feet so a successful bailout was made. 3 of the survivors are in Australia. "Further: I really detest the concept of a name being given to an

Re: [Aus-soaring] electric self launch

2016-09-20 Thread Mike Borgelt
It is just structural engineering. Put the right amount of material in the right place.You can see the pivot shaft in the videos. I suspect the entire turtledeck fairing is non structural. That motor design is in all sizes from very small to many 10s of kilowatts. It is called an outrunner.

Re: [Aus-soaring] [gfaforum] DIana 2

2016-09-20 Thread Peter Champness
thanks On Tue, Sep 20, 2016 at 7:13 PM, Matthew Gage wrote: > The pylon raises from the back of the bay. The motor pivots on the pylon > so the thrust axis is always horizontal. > > See https://www.facebook.com/gpgliders/videos for a number of clips of > the motor in action. > > > On 20 Sep 2016

Re: [Aus-soaring] electric self launch

2016-09-20 Thread Peter Champness
Very nice. Rapid extension and retract. I have seen that motor somewhere before. I did like the large access panel to the motor compartment. Not sure how they maintain adequate strength in that area. On Tue, Sep 20, 2016 at 7:25 PM, Mike Borgelt < mborg...@borgeltinstruments.com> wrote: > At

Re: [Aus-soaring] Ventus cM: Ib Braes

2016-09-20 Thread Gary Stevenson
Spot on Mike. I looked into buying this ship a few years ago, but alas, the fuselage did not fit, (or is it that, I did not fit the fuselage?) Rego is GGF. Ib called her "The White Lady" I wonder if Colin knows that? As Colin is a member of this forum, I wonder if he has any commen

Re: [Aus-soaring] electric self launch

2016-09-20 Thread Mike Borgelt
At 07:04 PM 9/20/2016, you wrote: Any  good links? I found a schematic diagram which indicates that the motor has a pusher folding prop. Not sure how it retracts and fits in the fuselage with the blades sticking up? Here you go: http://www.gpgliders.info/technik/ Scroll down to the video

Re: [Aus-soaring] [gfaforum] DIana 2

2016-09-20 Thread Matthew Gage
The pylon raises from the back of the bay. The motor pivots on the pylon so the thrust axis is always horizontal. See https://www.facebook.com/gpgliders/videos for a number of clips of the motor in action. > On 20 Sep 2016, at 19:04 , Peter Champness wrote: > > Any good links? > I found a sc

Re: [Aus-soaring] [gfaforum] DIana 2

2016-09-20 Thread Peter Champness
Any good links? I found a schematic diagram which indicates that the motor has a pusher folding prop. Not sure how it retracts and fits in the fuselage with the blades sticking up? On Tue, Sep 20, 2016 at 6:46 PM, Mike Borgelt < mborg...@borgeltinstruments.com> wrote: > Yes, Matt. > > Mainly th

Re: [Aus-soaring] [gfaforum] DIana 2

2016-09-20 Thread Mike Borgelt
Yes, Matt. Mainly that the limited diameter of the prop limits prop efficiency. In the chain Battery->motor->prop-> useful thrust, prop efficiency is the single largest loss. You'll get around 50% at the power/diameter/airspeeds we are dealing with here. More blades aren't necessarily better

Re: [Aus-soaring] Ventus cM: Ib Braes

2016-09-20 Thread Mike Borgelt
Adam, Ib is at Caloundra. He owned a Ventus c A fuselage 17.6 like mine. It was sold a few years ago to Colin Collum at Benalla. As of last Easter he still owned it as I saw him flying it. Mike At 04:20 PM 9/20/2016, you wrote: Content-Language: en-AU Content-Type: multipart/alterna

Re: [Aus-soaring] Ventus cM: Ib Braes

2016-09-20 Thread Mark Fisher
VCM was owned me. Sold it to a guy from Bathuurst about 3 years ago? Cheers Fish On Tuesday, 20 September 2016, Adam Woolley wrote: > Hello All, > > Just wondering whether anyone has contact details for Ib Braes? > > Alternatively, if he's sold the Ventus cM he used to own - then the e-mail > c