RFguy

soundslike PTT is wired across the mic, and not the separate PTT input... (or both) ***somewhere in the wiring perhaps there is a short between mic and PTT. measure it on the back of the sockets with an ohmmeter....

Usually there is a broad overview and background "briefing" for what will be covered before a flight... But instructors can do what they please if they think it is useful .. all a judgement call, varies person to person... Though, Nev, I agree, steep turn onto final is something more advanced and for the experienced. Doesnt hurt for the the instructor to demonstrate what is possible, as long as caveats are spelt out....

I agree, I would have let you do your own thing and observed how you did . Maybe on a 2nd go at it, the instructor could demonstrate turning airspeed into altitude. There's no better way to learn than doing it by yourself My instructor Rob would probably have let me have a fist of it and observed what I did and then on the ground or at another time, discussed/workshop-ed it, but, every instructor has their own methods, nothing particularly wrong either way....... ....I dont mind the steep turn at 500' onto final if I have heaps of airspeed, height and that I know I can bleed off that airspeed with a heap of drag out when the time comes. That's all experience.... Be mindful that (deadstick) steep turning onto final is going to be done with a high loss of altitude..... My (clean) Piper at max weight, 45 deg bank , I would be flying at 85 kts to pull that off... (15 kts above stall for that weight and bank) ......and I probably am going to loose 500' doing it....(15-20 seconds) I usually fly that manouver by looking at where I want to land with one eye (out the side window.....) , and another eye on airspeed and bank angle....- pitching the aircraft down sufficiently to keep the airspeed high. IE in those cases I am flying airspeed, and everything else on the panel is a distant secondary - except maybe bank angle........ No real need to look at the altimeter in those cases, you probably have no idea of the ground height and experience will permit you to judge 'enough height',,,,

that's the thing- speed envelope... if you have plenty of power and runway, tune for top end.... no need for a CSU.... . how many ml/nm at 140k TAS ? (lph / TAS) as for the busted crank, could be anything. but one needs ot be careful of the situation of having a heavy weight at both ends of the crank. 520 manual says "Propellers with a Rotational Moment of Inertia of up to 0,8kgm² have been used with no known problems" whatever that means... The airmaster https://www.propellor.com/ap533hctf-snr67je says it's 0.5kg.m2 But ya dont know about the possible harmonic behaviour without some instrumentation attached.... I'd go with a 3 blade. and put some vibration instrumentation in xyz on the crankcase.

Mike, any reason this aircraft didnt get a CS /IFA prop ? particularly suited to a turbocharged engine? DOes it operate boost (>30") or is it pressure normalizing ? Seems like takeoff engine power left on the table with low static RPM.....

yeah, they may buy in very large quantity, so they might have a price advantage. Otherwise, there is no price advantage buying wire from the US compared to local EDMO. colors are usually small 50' rolls. everything else is by the foot. What you need behind the instrument panel will depend on what instrument connectors you have, like high density versus standard density D connectors (3 versus 2 row etc) . excess copper is weight. Be sure to be fully across AC43.13 for requirements of wire size (single and in bundles ) for circuit breaker sizes...

Suggest buy from EDMO. If you dont buy from australian supliers, there wont be any. Sure you can buy from Spruce if you like, but you'll pay more per foot.... Shame on anyone who doesnt buy from AUstralian suppliers when there is no good reason except lazyness.

I think I'd like to have at least 500 feet to lose to restart the Lycoming in my PA28.... and probably wouldnt attempt it below maybe 1000 feet if there was a place to land in sight.... better to concentrate on the landing, unless you have someone competent in the other seat to fly it while you are dealing with the primer etc, troubleshooting.....

I read there is a crossover point with faster aircraft , and that prop stopped is more drag than prop idle for airplanes with 70-90 kts (for example) best glide. Your best glide would be , what , 50 kts clean ?

JG3, any idea how different is your sink rate with prop stopped versus idle ? . I do a glide whenever there is no one else in circuit. Not too polite a manoeuver, otherwise.

Skip you are going to have to put some numbers on the requirement. Force - I cannot beleive much unless it is acting as a bucket scoop ,But it WILL have some of the pressure of the cowl insides... You would be able to make a reasonable estimate of the upper limit of the pressure on the cowl flap. Travel ? . Many Model RC-servos will do the job you want , since I gather you are fine if it doesnt work.

at least from where they are, that should be an easy for any pilot. But ya do need to do them regularly to be regularly successful. I find that doing them with some wind around is useful - IE adding the requirement to think about the wind . When I practice and end up short, its usually because I forgot to take into account the 10 kts at 500', which can make a difference.... Some are hesitant when a bit high on final, to point the nose at the ground and / or use a slip near the ground in order to increase the rate of descent- still thinking about a 500fpm descent rate....

Oh , not the flap ? Doh I thought it was the FLAP actuator. OK. "disregard last and all previous " It seems I cannot read.

can we get back to the topic ?

those cheap chinese actuators are for things like kitchen robots, not airplanes....

Sean, as you are aware, anything you buy on ebay from China- you got to plan for a failure in flight, but you know that. Check if they live up to their specs etc. if it says 20kg, try 20kg, then try 30kg. and try pulling as well as pushing...they will be different.... and see how much there is in hand, and be sure to do it at 12V, not 13.8V etc on the bench , as wire volt drops are not insignificant near stall. You want about 2:1 at least on whatever it needs. Can you monitor the DC current during deployment at Vfe with the wing loaded ??? In the datasheet - notice the "Duty Cycle: 10%" - you should treat that as a red flag- that tells me the motor is very underdone for the job- avoid or substantially lower the load. -" Full load current: 0.2~0.3A at 12V" . you need to measure this at Vfe in flight (with the wing loaded) and see what current you are pulling. SUggest at Vfe, no more than 50% of full load current for whatever size you choose. - Note the very important spec "and the pulling force is less than pushing force." - the spec is pushing force (19kg). the pulling force might be 1/2 or 1/4 etc ......

the sealed beams, like the classic GE4509 are pretty bright (landing lights). they are a narrow beam, draw alot of current, and get hot, and have a MTBF of perhaps 15 hours in an aircraft something like 110,000 Cd. My Whelen Parmethius G3 PN# 01-0772102-10 says 100,000 Cd for the first 5 minutes, then as it warms up, 80,000, and at 1 hour and max ambient is at 60,000 Cd has 10deg beam spread.

How much thrust is required when airborne at Vfe ? - you need to know this. Sonex aircraft will know. how much room do you have ? did you get a ball screw, rack or lead screw type ?

You can see a good flashtube strobe at least 1nm in broad daylight...

Lyndon, also consider my viewpoint with my answers- I'm involved in GA maintenance...... but I also have a RA plane also, so I see both ends of arguments. what are you building? EDMO isnt expensive. you are not putting in 100km of wire.... doesnt really matter if you buy 20 different wires in 10 foot lengths of 100 foot lengths - all same price. Some coloured stuff is 50' minimum. I'd recommend using coloured stuff where you can for avionics, it will be much easier on your brain. Or, invest in a effective cable labelling tool (or labeller with those laminated print roll up wire sleeves.....) -glen.

good point Nev Most people i know in GA are installing the LED replacements for their sealed beams - I have a PARMETHEUS G3 SERIES LED LANDING LIGHT 01-0772102-10. which draws about one third of the current of the incandescent light with more light and far far less heat... Got from CJ Aerospace. skippy you dont take off from a real airport. LOL. a landing light on the glideslope at noon with the sun out is chalk and cheese.

I think a bright headlight is very effective for seeing an aircraft coming down the glideslope , when when waiting at the holding point or turning at the runway end I run my headlight whenever the plane is on the runway or airborne. and its bl00dy bright. The headlight I have is excellent. I think they should be compulsory and an airworthy requirement. As for strobes on the tail and wings- I'd suggest the flashtube type........ LEDs are half arsed at best IMO, for wide throw strobes. The Blondel-Rey equation is not a good fit , despite this is what the LED people will have you beleive- as it was primarily for very short durations. looking around the net for something so I dont have to write all about it I find : https://airbornelights.wordpress.com/lighting-technology/at-what-cost-will-leds-replace-flashtube-lights/ certainly the LED beacons and anti-collision lights meet the FAA requirements but they're pissweak IMO compated to a flashtube. The manufacturers for the LED beacons are also cagey about their tech details ..... go figure https://rosap.ntl.bts.gov/view/dot/9071/dot_9071_DS1.pdf

and no guarentee it is even what it is claimed......and I am guessing that it didnt come with release paperwork either... suggest EDMO. they're good to deal with.

between- as in forward, aft of mainspar of person CoM on the spar? What's the CoG location look like with no fuel in the fuel tanks (assuming forward of mainspar) and max people and baggage ? I see a few low wing aircraft that with nothing in the tanks(which are often forward of the mainspar) and full peeople and baggage, marginal CofG condition.

have you got pilots sitting over the wing spar, in front, or behind ? I'd also like to see +6g for these planes, so the Va doesnt get too low. IMO, that's a potential hazard in these land-slow but fly-fast slippery airplanes. 120 kts (IAS) is not that much use if Va (clean , at half fuel and 1 POB) ) is 75 kts etc.