GK 1 ZU BLJ is flying

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richard C
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Re: GK 1 ZU BLJ is flying

Unread post by richard C » Mon Jun 22, 2020 9:40 am

Chalkie wrote:
Mon Jun 22, 2020 8:25 am
richard C wrote:
Fri Jun 19, 2020 8:09 am
What a sad story. What happened to him ?
Garth was firebombing in the Lowveld, I think flying a turbo Thrush when he lost a wing. Sad day...
Thanks Chalkie - wow, tragic way to go.
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Re: GK 1 ZU BLJ is flying

Unread post by Russell Phillips » Mon Jun 22, 2020 10:29 pm

That Honda did service in my Citabria for its first 100 hours or so. Suits the GK better though :D
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Re: GK 1 ZU BLJ is flying

Unread post by Russell Phillips » Mon Jun 22, 2020 10:42 pm

BLJ in 1990. Garth and I each started building our own "Wild Things". They were to be powered by 2 strokes and would be lightweight aerobats. Garth was working in Lesotho and when relocating back to PE he transported his fuselage on the roof of his Mazda 323. About 5km from PE it fell off the roof and trashed itself. He left it next to the road in disgust and came and told me about it. I raced out and picked up the pieces. I still have some of it. He was really annoyed with himself and a tad disappointed. So I gave him my fuselage which ended up becoming the GK1. We also extricated my Honda out of the Citabria because he fancied the Mew Gull look.
Garth ate, spoke, slept and talked aeroplanes....all day every day!!
He would arrive at your place at 10pm on a Sunday night and sketch aircraft until 2am the next morning....all on tea!! Great loss to aviation and homebuilding.
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Re: GK 1 ZU BLJ is flying

Unread post by Russell Phillips » Mon Jun 22, 2020 10:52 pm

Garth Kopke - creator of BLJ.
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Re: GK 1 ZU BLJ is flying

Unread post by Neville Ferreira » Tue Jun 23, 2020 12:42 am

Russell what an incredible story. And to be the custodian of both his aircraft GJK001 and GJK002. What is the chances of coincidence that two unrelated purchases will bring Garth’s aircraft together again.

ZU-GJK SER # GJK002
ZS-WJN SER # GJK001
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Re: GK 1 ZU BLJ is flying

Unread post by richard C » Tue Jun 23, 2020 7:00 am

What an amazing story !
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Re: GK 1 ZU BLJ is flying

Unread post by Chalkie » Tue Jun 23, 2020 4:30 pm

For the OP.

Looking at this photo that Russell posted in the other thread...

download/file.php?id=246973&mode=view

The exhaust stream passes close to the canopy hinge line and the vent / door at the front, lower, LH corner of canopy fairing. CO problems I suspect.

Ever had a headache, fat-head after flying the aircraft?
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Re: GK 1 ZU BLJ is flying

Unread post by Russell Phillips » Tue Jun 23, 2020 5:35 pm

Valid observation Chalkie that I'd never considered however thinking back that little door snaps closed if you get it near the closed position and also your shirt sleeve gets sucked outwards towards the canopy/fuselage gap which probably saves one from breathing too much CO.
Plenty headaches in those days...mostly Saturday mornings though so probably not caused by the aeries! :D
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Re: GK 1 ZU BLJ is flying

Unread post by excolonial » Wed Oct 14, 2020 10:53 am

Inspiring stuff, what an excellent little machine, with a remarkable flight envelope and if the hanfling is even half as good as you say, then a remarkable achievement.

I have some stuff on paper, and a fantastic but flawed single seater. Maybe one day I wil get round to bulding my own.

The whole trajectory of the project, methods applied, and indeed the period when it was undertaken are surprisingly similar to that other excellent little machne the arnold AR-5. Kit/plan sales were killed off by fear of litigation.

https://airscapemag.com/2016/12/05/arnold-ar5/

Outwardly both projects appear a bit Heath robinson, when in fact much detailed practical thought was clearly put into them, and careful consideration was given to widening the flight envelope. Fly fast land slow...
The older I get, the more I am convinced that "A Confederacy of Dunces" is non fiction.
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Re: GK 1 ZU BLJ is flying

Unread post by Neville Ferreira » Sun Dec 13, 2020 7:27 pm

She keeps on getting better... This morning flying at 7500 feet routing from Rhino to Kitty Hawk, the GK settled at 194Mph ground speed while maintaining altitude. Then thereafter catching up with RV14 that has just taken off from Kitty runway 19, I throttle back in the decent, not to exceed 230Mph(VNE) delivering 236Mph ground speed for a brieve moment. 19 min of flying consuming only 5L of fuel.
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Re: GK 1 ZU BLJ is flying

Unread post by Johan Swakopmund » Mon Dec 14, 2020 10:59 am

Morning Neville

I have a little KR2 that is really to small for two people so i am busy changing the seat to accommodate a single person.
With small cockpit clean up and upgrades
I don't like the volkswagen engine at all . Especially the prop swinging. Got hurt once with this one and would not
touch a prop again for starting.

What other engine would you suggest for the KR. ( Even Rattex 503 or 582 )
Will your Honda setup not do it.
I would appreciate if you could share the engine / redrive etc with us if not to much hassle for you.

The GK 1 is the most beautiful single i know of and it performance unbelievable.

Regards

Johan
Last edited by Johan Swakopmund on Mon Dec 14, 2020 2:15 pm, edited 1 time in total.
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Re: GK 1 ZU BLJ is flying

Unread post by excolonial » Mon Dec 14, 2020 12:26 pm

Any updates on this fantastic little machine?
The older I get, the more I am convinced that "A Confederacy of Dunces" is non fiction.
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Re: GK 1 ZU BLJ is flying

Unread post by Cornell Blok » Mon Dec 14, 2020 2:24 pm

Johan Swakopmund wrote:
Mon Dec 14, 2020 10:59 am
Morning Neville

I have a little KR2 that is really to small for two people so i am busy changing the seat to accommodate a single person.
With small cockpit clean up and upgrades
I don't like the volkswagen engine at all . Especially the prop swinging. Got hurt once with this one and would not
touch a prop again for starting.

What other engine would you suggest for the KR. ( Even Rattex 503 or 582 )
Will your Honda setup not do it.
I would appreciate if you could share the engine / redrive etc with us if not to much hassle for you.

The GK 1 is the most beautiful single i know of and it performance unbelievable.

Regards

Johan
Rotax 912 would be awesome
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Re: GK 1 ZU BLJ is flying

Unread post by Johan Swakopmund » Mon Dec 14, 2020 3:02 pm

Yep Cornell
Had a 912 and literally gave it away pricewise.
I am happy with the Jabi engine my son got in his Bushbaby Explorer.
Problem is one can easily overspend on something like an KR and would never get half the money back
if need to get rid of it.

Johan
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Re: GK 1 ZU BLJ is flying

Unread post by Neville Ferreira » Mon Dec 14, 2020 5:43 pm

Johan Swakopmund wrote:
Mon Dec 14, 2020 10:59 am
Morning Neville

I have a little KR2 that is really to small for two people so i am busy changing the seat to accommodate a single person.
With small cockpit clean up and upgrades
I don't like the volkswagen engine at all . Especially the prop swinging. Got hurt once with this one and would not
touch a prop again for starting.

What other engine would you suggest for the KR. ( Even Rattex 503 or 582 )
Will your Honda setup not do it.
I would appreciate if you could share the engine / redrive etc with us if not to much hassle for you.

The GK 1 is the most beautiful single i know of and it performance unbelievable.

Regards

Johan

Hi Johan. If you can not add a started to the rear of the engine then from my research this year I would really consider a O-200 if you can find one...

The Honda engines from www.Vikingaircraftengines.com will be a solution at $12000 for a 130Hp. Either way, your investment will be very nose-heavy hence the reason the VW or alternatives were always the engines of choice.

Maybe someone can help me out here with the name of the supplier in the USA, supplying is a kit engine that you assemble yourself for under R70K, if I am correct it delivers between 100Hp-130Hp. It is a flat 4 direct drive.

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