corvairkr

Hey Scott, i enjoyed your write up in the latest mag just wondering if she's had her maiden flight yet?

jason

Mate im not sure but i think i have seen some "one shot" light weight sprayable coatings available to prevent corrosion on the interior aircraft structures i am sure one of the lame's or L2's would know .

For the exterior however , i use the De beer refinish system quite a bit with my work and if i was you i would spray your exterior surfaces firstly with "wash primer " which is an aluminium etch primer

....now if your 100% certain of your final colour i would then top this with "2k tinting surfacer" this will enable you to tint this surfacer to very close to your final colour which will mean you will need less paint for an even coverage ....

Or if your like me and come up with a different colour scheme every second day just top it with a standard 2K surfacer, you can however tint this from light grey to dark grey to get in the ball park ie light grey for lighter colours and darker grey for dark colours .

With this in mind there is no reason why you cant chop and change your colour choice until you are ready to lay down the colour coats ......oh and for the top coats i would go basecoat/clearcoat over solid single stage as it will be much easier to maintain and hold up better over time especially if you choose a highly pigmented colour such as reds ,yellows etc .........hope this helps .

jason

Onya Ben , i can just picture you sitting on your bench twiddling your thumbs waiting for those bloody plans to arrive

jason

Absolutely awsome Mark! What a massive achievement you have a beautiful looking aircraft there, well done.

Jason

I got an order from the last week! All good then.

G'day Pud ,

AN bolts was started as a sideline by an ex KR2-s builder who had to sell his project due to other business commitments taking up all his time .

I'm not 100% certain but i assume he ceased operating An bolts for the same reason ,i will send him an email to confirm .

Regards

Jason

hi.

here's another option http://www.summitracing.com/search/Part-Type/Fuel-Cells/?keyword=fuel+cells&kr=fuel+cells

Jason

Congratulations Scott, what a nice looking aero plane ......I just checked out the website I didn't realise what a capable machine the Nynja is ....top stuff .

Jason

G'day Russell.....I also have a corvair i am building up as a 2850 to power my highly modified kr2-s I am am currently building .

And to echo Scotty's sentiments if I can help by all means sing out

Jason

I had read about this project a couple of years ago in EAA experimenter magazine , it never ceases to amaze me how clever some people are http://www.theballybomber.com/index.php/

Jason

Here you go Ben , the builders name is John potts it was yet to have flown at the time of the Ingham wings and wheels airshow and it does look like its an Ingham local.

Jason

Good onya Ben i bet you're pretty exited to get started , i just noticed you are in Cairns , at the Ingham wings and wheels last year there was a hummel parked in a hanger im not sure if it lives there permanently but im sure a call to someone at the airfield should answer that .....just thought you may be interested .

jason

Onya Gareth top stuff

G'day Boingk ,

Heres another option i remembered winsor68 posted a while ago , i love it it looks like a lot of fun and relatively cheap to get in the air http://www.recreationalflying.com/threads/poorboy-pb-1-ultralight-cheap-plans-built.34520/#post-209408

jason

Congrats on the new machine Eric , shes a bit of a looker too.

Thats excellent Eric top idea

Just thinking out loud guys I am a little confused here, it seems I have got my wires crossed or some previous posters have got there’s crossed in regards to detonation.

it has been explained in this thread as basically a huge force pushing down on the rising piston …I always believed this to be a result of pre-ignition and results in instant destruction ? pre-ignition is caused by a red hot carbon ember or other hot spot igniting the charge as the piston is rising.

And detonation as I understood it was the spontaneous detonation of the remaining unburnt fuel/air charge or “end gas “as it’s referred, under high engine load.

As I understand it depending on the size of the engine detonation in itself isn’t necessarily instantly destructive as it happens after ignition as the piston is on its way down and the “pinging” you hear is actual structure of the engine resonating and vibrating as a result of the sharp pressure increase of the end gas detonating , basically the larger the engine the more resistant it is to detonation, to a point.

That being said , in the relatively quiet confines of a car its easy to hear an engine detonating in an aircraft it’s a different story pretty much the only way to tell if you have a cylinder detonating or about to is close monitoring of cht and egt on each cylinder.

My question.............is this scenario plausible

Given that some Jabirus may have cooling issues (a factor for detonation) and Jabiru have acknowledged engines are detonating , say an aircraft has been flying lands refuels , changes students whatever the engine is sitting there heat soaking in the cowl, restarts either taxis to the end of the strip or run up bay all the while temps are getting a little warmer ….line up temps are high but in the green open throttle engine is now drawing hotter than normal air from the cowl increasing the fuel/air charge temperature (another factor for detonation )

Halfway down the takeoff roll a cylinder starts detonating the pilot is unaware, aircraft rotates and begins climb out , temp in cylinder is reaching critical stage the spark plugs heat range is beyond capacity and starts to glow red hot, pre-ignition occurs with the resulting catastrophic failure of the engine .

Like I said I am just thinking out loud I just find it strange a through bolt can fail so quickly without any indication .

Jason

After a bit of trawling around, it looks like it might still be up in Darwin, but hasn't been on the register since at least 2000http://www.flickr.com/photos/grey_albatross/4531686141/in/photostream

Thanks for that , i have to say i'm gobsmacked that it has just been sitting around doing nothing what a waste . It did cross my mind that it may be sitting in a hanger somewhere gathering dust,then i thought nahhh couldnt be , but to hear that is the case is really sad .

Been a few years since I have spoken to anyone from the Darwin Mafia - about time I did catch up with whoever is still around. This accident report would probably explain its demise.http://www.atsb.gov.au/publications/investigation_reports/1985/aair/aair198500654.aspx

The Pitts chopped the Laser's wing up. The Laser got a new wing and is based at Moorabbin.

If i remember correctly Ossie aquired it after that accident and rebuilt it . i looked after it from 86-88 when i left Darwin and the photo above was taken in 94 i believe . hmmmm bit of a mystery seems to have just vanished .

Jason

Jason

Hi Fellas ,

Do any of you blokes know the fate of VH-KIT ?, it was owned by Ossie Osgood of Arnhem Air Charter in Darwin , i spent many an hour detailing it for rides as a 16 year old it was a beautiful aircraft and i often wonder what become of it .

Jason

Ahhh thats awsome Tomo !

G,day Pete,

you could try Aeropower in WA http://www.amnet.net.au/~munks/AEmenu.htm

Jason

Downloaded it on iTunes straightaway- that and Powerstruggle from the Sth Africa clip as well. Great music. Remember the Wrights were "lunatics" in their day as well......We owe flight to the many lunatics that dared to dream....

Jason

After watching the interview my suspitions were confirmed, he is as mad as a s**t beetle but good luck to him i say........ grindin the crack is incredible .

This however i would love to do

Jason

Geeez i can see a northern hangar party jam session coming up , im an ex drummer i havent played for a about 7 years though , i was a founding member of a local band called "Dr Jack" which are still going strong .