skyfox1

Hi Ian why not combine the two Recreational Flying Pilots keep everybody happy.

cheers Geoff..

That comment of yours worries me 80 ...Are you quoting the 'Ultimate' or 'maximum design' load factor.

 

Usually 'ultimate' means the point just before permanent deformation occurs and is usually 1.5 x the design load factor (unless I have it wrong). +6 / -3 is a big number to claim, standard utility GA aircraft are usually +3.8 / -1.8.

Gross weight 500 kg.

cheers Geoff.

If you spent more time covering than puning you would be flying sooner.

We did 800 hrs with a free air 503 on a drifter we took off all the cowlins and fan it ran great

temps perfect.

I have a question for any electrical experts out there. I am looking for single seat a/c with dual ignition. A lot have single ignition. Is it possible to put in another cdi unit and connet both to the same plugs.Thanks,

 

Norm

When you call out CLEAR PROP when you pull start the lawn mower..

I talked it through with my engineer this afternoon - he agrees with the comments made here - will end up needing recover - his estimate for getting it done professionally is about $10K per wing !! I think I will probably pass and keep loking for one that has already been done. Anyone know of any good Austers for sale ?

Geoff, I would recommend them for any rotax 2-stroke, inverted or up right. They just give a more consistant start, better running, and longer life. I deliberatly ran a set out to 160 Hours once in my 582 Drifter. They had been cleaned and regapped several times, but at 160 Hrs were still doing fine. What caused me to discard them in the end ??.....the center post, (Precious metal-irridium ?) had rounded off to the point where I just couldn't gap them accuratly anymore, so it was time for a new set.Last time I purchased a set they were actually BR8EV, and were up to around $15 each, you may have to seek them out. I purchased them from a Honda bike dealer.

We originally discovered these plugs in the early 80s when most 2-strokes were single points-ign, pull start, and damn hard to start if real cold (northern California in Winter!). We'd generally get a start with them in two to three good pulls....................................................................Maj...

cheers Geoff...

The colors are very unfortunate - lime green and an off white. The fabric is clean under the paint. There is one section shown on the green where the tape has frayed a bit where the paint has come off but no damage to the base fabric. I think the real issue was the type of paint used rather than the fabric application.

cheers Geoff...

Hi what color is on the underside of the paint and when the paint flakes off is the ceconite clean .

It can be done but with the effort of preparing the ceconite surface it would be better to recover .

Peter if you keep up all these puns l will be busting at my stitches..

No.... I am not sugesting any such rubbish. I'm simply stating that a flour and water mix is my prefered method of gluing and doping the fabric on my planes.

Also Tomo saftey wire the D shackle on your rudder attachment if the D shackle holding the tail wheel spring is the same for the cable..

Ok all, I've opted to use the Stewart system for fabric covering of my Corella and my Nieuport 11. What I am asking is what others have used in the way of fabric, the approx cost, where they obtained it and why they used it ?

cheers Geoff...

If only i could fly like that

Richards' right Tomo. Plus you run a greater chance of destroying the prop if you do end up on your side. However, by all means do whatever you need to do, on the ground, prior to flying to get comfortable with the beast !...I personally like to tie an aircraft to a post and run at takeoff power a few times, prior to flying an unfamiliar aircraft. This ensures that fuel flow is adequet at full noise, and also show that full RPMs is obtainable, particularly with an unfamiliar prop, and that temps are good.On the engine side, the CHT is the one to watch on the 447 at full power after takeoff. The EGTs will basically tell you if your mixture is correct, or too lean/rich. Anywhere between 1050-1200 should be good there. Don't go above 1250. Below 1000 your burning way more fuel than you need to.

You should have good cooling in that machine, as I expect you'll be getting along pretty briskly.

 

Years ago I did 175 hrs on a free-air cooled 447. (no fan) I was swinging a big prop, and the CHT always wanted to creep above 380 after take-off. If you didn't back off, it would happily climb toward 400 !....It always ran sweet as you would expect with a new engine. One morning I climbed to 1500 Ft for the cruise to a fly-in only about 30nm away. I had leveled off and reduced power, and the CHT was coming back nicely to around 360 or so, when suddenly she just started backfiring !......I pulled on some choke thinking it was a fuel supply problem, but it just made the backfiring worse.

 

At 1000ft it was obvious it wasn't going to keep me in the air, so I picked a nice paddock and landed nicely. Upon pulling the plugs I found one cylinder had zero compression. The top (dykes) ring had come clean off one piston and had shattered into a million pieces, bending over the spark-plug electrod in the process. No fly-in that day.

 

And on the subject of spark-plugs, if your running an upside-down engine, with pull-start, you may seriously consider replacing the standard B8ES plugs with B8EV plugs, for quicker and easy starts, and better running and fuel burn allround.

 

The B8EV plugs are best found at motorcycle outlets, as they are a racing plug for bikes. They do cost a bit but you will get many fine hours from them. I ran them for years in the 582 Drifter, and would highly recommend them.

 

The twin-carb engines will always run smoother than the single carb, but you should be fine with a SC on the 447....reading the plugs regulary with a 2-stroke is the way to go. If your timing or points aren't right it'll want to lean up on you, and your plugs will start indicating lean, instead of that nice slightly sooty coffee brown that 2-strokes like......Your engine sounds pretty sweet in the video.............................................................................Maj...

cheers Geoff

Yes never straighten those brackets we have had a fatality with that been done.

We might not spell very good but we can lift heavy fings

The main tank in my SupaPup (36L) is behind the panel, over my legs and it's fibreglass. I really think if i were to have any kind of incident that bent the tubes in the forward fuse area then my legs would be doused in petrol. Maybe it wouldn't ignite but a hot exhaust or electrical spark would do it I guess. When I looked at a J3 cub, moth etc, they are all in the same boat and no doubt if one was to have a really serious crash then the fuel wouldn't matter as the impact would kill the pilot not the fire...The thought of being seriously burned and surviving a crash is a very sobering one, the fuel in the forward fuse is hard to ignore as a risk factor especially when reminded that homebuilts crash twice as much and have three times the fatalities compared to the rest of Aviation.

 

Mostly though it's the nut behind the lever that causes the plane crash so making good decisions and being careful when flying will do more to keep you safe than putting the fuel in the wings rather than the fuse..

 

By the way can I ask why you'd be swapping from the fox to the 701?

cheers Geoff

Hi could l have your opinion on fuel tanks placement ,l have been looking at a Zenith ch 701 the fuel tank is behind the panel are there any safety issues with this system l am not keen on having 36Lts of fuel in that area are there many other aircraft with this design.

cheers Geoff..

Hi l am looking at a zenith 701 is there any thing that needs a special look at for wear when checking the aircraft it has 912ul the engine has done 351 hrs same as the airframe.

Hi here is a link l puchased the same as these a coulpe of years ago l make all my cables for the Drifter they work good .

l made a couple dumby cables with this swag tool took them to morrabin airport they have a testing machine there and all mine passed

its only a cheap unit but works great..http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=270975020847&fromMakeTrack=true&ssPageName=VIP:watchlink:top:en

Who asked for your opinion??

Pud

 

PS. Just as well this IS the Aviation Laughter forum eh?