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Search: Posts Made By: David Z
Forum: RV General Discussion/News 06-10-2019, 09:24 AM
Replies: 11
Views: 1,595
Posted By David Z
I hit a bat in the work plane a few days ago....

I hit a bat in the work plane a few days ago. About a year ago, one of my co-workers took a coyote in the main landing gear.

The best I ever heard was a plane under-flew an eagle carrying a fish....
Forum: RV General Discussion/News 04-18-2019, 03:58 PM
Replies: 10
Views: 2,148
Posted By David Z
Pilot as a Day Job

I was thinking the other day, how many builders and RV pilots also fly professionally? Also, in what type of operation and aircraft?
Did the systems or layout on the plane you fly at work affect the...
Forum: Alternative Engines 03-24-2019, 05:37 PM
Replies: 193
Views: 42,978
Posted By David Z
Beta and Reverse

Is the engine capable of utilising a reversing propeller?

I understand it adds an extra level of complexity that's not really required. I'm mostly curious if the bearings and gear box are designed...
Forum: Alternative Engines 03-15-2019, 06:46 PM
Replies: 193
Views: 42,978
Posted By David Z
Aerobatics

What do you imagine the aerobatics capability of the engine being? My dream to be putting it into an RV-8 and doing "gentleman's aerobatics". Inverted flight, loops, rolls, etc. What is likely to be...
Forum: Alternative Engines 03-07-2019, 08:42 PM
Replies: 193
Views: 42,978
Posted By David Z
I'm still years away from an engine, so this...

I'm still years away from an engine, so this definitely excites me. The timing could work out quite well. I fly (transport category) turboprops for a living, and would love to have an affordable...
Forum: Alternative Engines 03-07-2019, 08:36 AM
Replies: 193
Views: 42,978
Posted By David Z
Bleed Air is not the direction technology is...

Bleed Air is not the direction technology is going. Aircraft like the Boeing 787 use independent compressors driven by the accessory gear box. Stealing bleed air from the engine is...
Forum: Canada 03-06-2019, 04:05 PM
Replies: 0
Views: 254
Posted By David Z
Thunder Bay RV-8 Building Partner

I am looking for a building partner!

After a bit of a career caused hiatus in building, I have my project up and going again. I completely renovated my garage into a great workshop, and now the...
Forum: Canada 10-29-2017, 07:10 AM
Replies: 2
Views: 1,590
Posted By David Z
Hello, That's wonderful news, thank-you! Where...

Hello,
That's wonderful news, thank-you!

Where are the other RVs kept and built in Thunder Bay once they're past the garage stage? The Kakabeka Falls field is a bit far and too small for my comfort...
Forum: Canada 10-26-2017, 10:45 AM
Replies: 2
Views: 1,590
Posted By David Z
RV-8 Conundrum

I haven't been on this forum in a while mostly due to life situation. I have a RV-8 wing and tail kit, done up to the pre-close inspection. I started building my plane in London Ontario. Then work...
Forum: RV models of the future (RV-??) 01-14-2017, 06:32 PM
Replies: 465
Views: 121,546
Posted By David Z
I'm in the 6-seater camp. Turbine would be nice...

I'm in the 6-seater camp. Turbine would be nice too, but now we're talking about really big $$$. I'm sure a PT6A-21 can be had for the low 6 figure range off an old King Air 90.

In reality I predict...
Forum: Traditional Aircraft Engines 10-08-2016, 06:27 AM
Replies: 7
Views: 3,309
Posted By David Z
The airframe is designed with a Lycoming engine...

The airframe is designed with a Lycoming engine in mind. That makes it pretty hard to find a more suitable engine than the one that was designed to be there.

Many people have been successful...
Forum: RV General Discussion/News 09-07-2016, 07:29 PM
Replies: 32
Views: 4,423
Posted By David Z
RVs stalls at 50 kts and cruise at 150, that's...

RVs stalls at 50 kts and cruise at 150, that's quite the speed range. A 172 stalls at 50 and cruises at 100, much narrower speed range. FP props are optimized for one speed, CS props are much more...
Forum: Propellers 02-04-2016, 06:57 AM
Replies: 17
Views: 5,881
Posted By David Z
I suspect that extra second the time required for...

I suspect that extra second the time required for the air to accelerate through the throttle. The engine is sucking the air into the cylinders, but the air isn't moving quickly enough through the...
Forum: RV-8/8A 01-30-2016, 03:33 PM
Replies: 18
Views: 5,024
Posted By David Z
While I agree with you in theory, in reality a...

While I agree with you in theory, in reality a 6-7 kt difference in approach speed would be 60 to 67 kts (examples only). To set a flat 65kts Vref would be a good safe compromise in the name of...
Forum: RV-8/8A 01-30-2016, 12:58 PM
Replies: 18
Views: 5,024
Posted By David Z
Is it worth it?

I know the theoretical answer is yes, but what's the practical answer? Are we over complicating the situation and solving a problem that doesn't exist?

Is there enough weight change for the standard...
Forum: RV General Discussion/News 01-20-2016, 06:37 AM
Replies: 43
Views: 8,870
Posted By David Z
Leaving the air is probably safer. The fuel,...

Leaving the air is probably safer. The fuel, being a liquid isn't compressible, the air is. I'd be worried that any fuel expansion or contraction would cause serious damage to the container if no...
Forum: Safety 01-18-2016, 01:36 PM
Replies: 29
Views: 8,382
Posted By David Z
What about planes with no ignition key.

What about planes with no ignition key.
Forum: RV-10 01-16-2016, 05:03 PM
Replies: 7
Views: 1,500
Posted By David Z
Every prop on a turbine single is a feathering...

Every prop on a turbine single is a feathering prop too. For an engine fire, or any scenario where attempting to restart is not a good idea, feathering would dramatically extend glide. The fact that...
Forum: RV General Discussion/News 01-16-2016, 08:06 AM
Replies: 43
Views: 8,870
Posted By David Z
https://www.tc.gc.ca/eng/tdg/clear-part12-466.htm#...

https://www.tc.gc.ca/eng/tdg/clear-part12-466.htm#sec129

Fill them to the line, leaving the head-space. Tighten the the cap and the vent so no liquid, vapor or anything will escape. That's the leak...
Forum: RV General Discussion/News 01-15-2016, 05:25 PM
Replies: 43
Views: 8,870
Posted By David Z
This style of gas can is remarkably tough. You...

This style of gas can is remarkably tough. You see them sliding out of pickup trucks and bouncing down a gravel road. In a previous job, I'd see the remains of black bears trying to get into them....
Forum: RV General Discussion/News 01-15-2016, 11:15 AM
Replies: 43
Views: 8,870
Posted By David Z
The way I read this, you want to carry jerry...

The way I read this, you want to carry jerry cans, land, and pour them into the aircraft?

Use good quality plastic gas cans, the ones with some form of certification printed on it. Once you fill...
Forum: Canada 01-12-2016, 05:19 AM
Replies: 25
Views: 9,191
Posted By David Z
When I was in flight school in Sault Ste. Marie...

When I was in flight school in Sault Ste. Marie Ontario in 2007-2010, we routinely flew across the border. No flight plan, no ATC contact, nothing. I did a little tour around the Mackinaw area in...
Forum: RV-10 01-10-2016, 07:17 AM
Replies: 23
Views: 7,709
Posted By David Z
They are wonderfully dependable engines, but more...

They are wonderfully dependable engines, but more complex to operate than an IO-320 through IO-540 or even a PT-6.

An engine that pushes ~45" on take-off, and cruises at a higher MP than atmosphere...
Forum: RV-10 01-09-2016, 01:46 PM
Replies: 23
Views: 7,709
Posted By David Z
I fly 2 of those engines in my day job. Pretty...

I fly 2 of those engines in my day job. Pretty complicated to operate, many more limitations than a "standard engine. They run hot, guzzle gas, fragile, and susceptible to abuse. You can see the...
Forum: Alternative Engines 08-16-2015, 06:11 PM
Replies: 100
Views: 24,645
Posted By David Z
I pay attention to alternative engines, because...

I pay attention to alternative engines, because eventually, one won't be "alternative" anymore. Right now, Lycoming seem to present the best option for my list of requirements.

I commend everybody...
Forum: RV-7/7A 08-11-2015, 05:31 AM
Replies: 19
Views: 5,514
Posted By David Z
They don't have "tires" where he's from, just...

They don't have "tires" where he's from, just "tyres". Thankfully, they're both round and typically made from rubber. :D
Forum: Safety 07-26-2015, 09:10 AM
Replies: 4
Views: 2,901
Posted By David Z
Is there an air-to-air frequency that's commonly...

Is there an air-to-air frequency that's commonly monitored in that area?
Forum: RV-14 07-16-2015, 03:21 PM
Replies: 187
Views: 123,518
Posted By David Z
I haven't seen specifics for the Continental...

I haven't seen specifics for the Continental -360, but I do know that IO-520s and such are a bit cheaper than the Lycoming counterparts.
Forum: Safety 07-11-2015, 06:06 PM
Replies: 52
Views: 14,407
Posted By David Z
Somewhere I heard this, not sure of the source or...

Somewhere I heard this, not sure of the source or accuracy.

When testing certified airplanes, the structure is allowed to be permanently deformed/damaged once 100% of the design strength is...
Forum: Safety 07-02-2015, 07:13 PM
Replies: 33
Views: 7,469
Posted By David Z
I did an approach about a year ago where we were...

I did an approach about a year ago where we were flying in beautiful blue skies, above a layer. Entered cloud at about 600' and broke out around 300'. Funny part was I could even see the far...
Forum: RV General Discussion/News 06-19-2015, 03:30 PM
Replies: 29
Views: 9,490
Posted By David Z
I'd hate to see the price on that. Anybody know,...

I'd hate to see the price on that. Anybody know, just out of curiosity?
Forum: RV General Discussion/News 06-16-2015, 08:51 PM
Replies: 29
Views: 9,490
Posted By David Z
This is going back to a source from the mid 90s...

This is going back to a source from the mid 90s so take it for what it is worth. They use purple avgas 115-145 octane. Make a small batch every year and that is enough to satisfy the guys pushing...
Forum: RV General Discussion/News 06-16-2015, 08:35 PM
Replies: 8
Views: 2,572
Posted By David Z
I like bacon too. Also, have not seen anything...

I like bacon too. Also, have not seen anything off my wings as there is no fuselage for them to be attached to. ;)

In my day job, I often see vapour forming off the props when conditions are just...
Forum: RV-8/8A 05-30-2015, 10:50 AM
Replies: 6
Views: 2,389
Posted By David Z
It's crossed my mind, but seems unnecessary...

It's crossed my mind, but seems unnecessary considering the ease, availability and safety of wing tip tanks. With the price of fuel these days too, the trend seems to be to pull the power back, run...
Forum: RV General Discussion/News 05-30-2015, 10:37 AM
Replies: 3
Views: 2,000
Posted By David Z
The thread about the 200kt club is child's play...

The thread about the 200kt club is child's play ;) He joined it while going in reverse.
Forum: Safety 05-28-2015, 08:54 AM
Replies: 12
Views: 3,970
Posted By David Z
I was taking off in a King Air one day. Just at...

I was taking off in a King Air one day. Just at rotation, I saw a bird come from the left side of the runway, flapping as fast as it possibly could. At first I was worried about the left prop/engine....
Forum: Propellers 05-28-2015, 08:28 AM
Replies: 13
Views: 3,080
Posted By David Z
In some (Lycoming powered) piston twins, the...

In some (Lycoming powered) piston twins, the feather check is done at 1500rpm because the prop WILL NOT cycle conventionally. Any rpm change is due to the prop going towards feather. Hence why that...
Forum: RV General Discussion/News 05-22-2015, 09:41 PM
Replies: 28
Views: 5,272
Posted By David Z
I've got quite a bit of time using KLN 89/94s,...

I've got quite a bit of time using KLN 89/94s, 400/430/530(w) and recently a "sexy" new GTN-750.

Yes, the new GTNs are an improvement over the 430/530 series, but not the same drastic improvement...
Forum: Propellers 05-16-2015, 07:59 AM
Replies: 55
Views: 13,133
Posted By David Z
Would retractable gear ever pay for its self?...

Would retractable gear ever pay for its self? 5-10% faster cruise for the same fuel burn. You'd be asking much the same questions as with a c/s prop. It's heavier, more complex, more maintenance,...
Forum: Job Board 04-28-2015, 07:25 PM
Replies: 7
Views: 2,014
Posted By David Z
I am now employed in Northern Ontario flying...

I am now employed in Northern Ontario flying Piper Navajos. Busy studying for my training. For those thinking about fuel flow, the POH says to lean to 27gph in climb, that's per engine too. Doesn't...
Forum: RV-10 04-13-2015, 03:55 PM
Replies: 7
Views: 2,735
Posted By David Z
Bose vs Lightspeed

I find the Bose a bit quieter, but after about an hour of flying it becomes uncomfortable.

The Zulu.2 is not quite as quiet, but I can wear it all day long no problem. My longest flight time in one...
Forum: RV General Discussion/News 03-30-2015, 09:25 AM
Replies: 103
Views: 26,508
Posted By David Z
Risk vs reward is completely different in...

Risk vs reward is completely different in wartime. Also, long term fatigue related failures aren't much of a concern when the airframe isn't needed to last very long.
Forum: Job Board 03-29-2015, 12:10 PM
Replies: 7
Views: 2,014
Posted By David Z
Canadian Professional Pilot

Due to an unfortunate set of circumstances, I find myself back on the job market.
I am a Canadian Commercial pilot with multi-engine instrument and float ratings. (For those familiar with the...
Forum: RV General Discussion/News 03-09-2015, 11:09 AM
Replies: 1
Views: 1,216
Posted By David Z
I was at the King Air sim in Atlanta in December,...

I was at the King Air sim in Atlanta in December, can't say enough good things about the training there. Never wore any Vans Aircraft swag though.
Forum: RV General Discussion/News 02-26-2015, 08:27 AM
Replies: 89
Views: 18,052
Posted By David Z
The R-3350 from the piston airliner days has very...

The R-3350 from the piston airliner days has very little in common with a 4 cylinder Lycoming.

In any supercharged radial I've ever been around, full throttle is above the manifold pressure redline....
Forum: Propellers 02-23-2015, 06:46 PM
Replies: 8
Views: 1,859
Posted By David Z
I've noticed that engines always run worse in...

I've noticed that engines always run worse in IMC. Doesn't matter if they're turbine or there's more than one. I've heard it called "auto-rough".
It's not that I don't believe you, but maybe your...
Forum: RV-8/8A 02-23-2015, 06:35 PM
Replies: 677
Views: 697,310
Posted By David Z
That looks really nice. I'm planning on a similar...

That looks really nice. I'm planning on a similar panel, your just much farther ahead of me :D
Forum: Rocket 02-22-2015, 11:14 AM
Replies: 26
Views: 9,752
Posted By David Z
Innodyn was testing one of their turbines in an...

Innodyn was testing one of their turbines in an RV-4. Maybe that's the reason for RV-4T?
Forum: RV General Discussion/News 02-18-2015, 09:30 AM
Replies: 14
Views: 4,417
Posted By David Z
That is correct. It applies to the IO-520 for...

That is correct. It applies to the IO-520 for sure, not sure about the other Continental injected engines. I suspect the IO-550 is the same. Either way, it shouldn't cause the engine to flood and...
Forum: RV General Discussion/News 01-28-2015, 05:35 PM
Replies: 324
Views: 137,808
Posted By David Z
How about a highest fuel burn forum? 18.3 gph,...

How about a highest fuel burn forum? 18.3 gph, nicely done :p
Forum: Traditional Aircraft Engines 01-22-2015, 06:16 AM
Replies: 12
Views: 7,589
Posted By David Z
The O actually means Horizontally Opposed,...

The O actually means Horizontally Opposed, relating the the cylinder configuration. Other options are V-####, for V engines like V-1650, or R-### for Radial engines. So VO-### means "vertically...
Forum: RV-9/9A 01-20-2015, 07:03 PM
Replies: 13
Views: 5,371
Posted By David Z
I have seen several Cessnas with belly pods,...

I have seen several Cessnas with belly pods, smallest being a C185. They are very common on the Caravans. Nobody seems to complain about them (for whatever that's worth). Never flown any of them, so...
Forum: RV-9/9A 01-19-2015, 07:26 PM
Replies: 13
Views: 5,371
Posted By David Z
Cargo Pod

What about adding a cargo pod like they do on King Airs?
http://www.commuterair.com/commercial-services/enhancements-modifications/cargo-pod-baggage-area

My experience on the King Air 100s is about...
Forum: Traditional Aircraft Engines 01-16-2015, 05:44 PM
Replies: 12
Views: 2,302
Posted By David Z
It works in the Northern Hemisphere too, you just...

It works in the Northern Hemisphere too, you just fly backwards :p .

Being serious now, I've flown a plane that spins the engine the wrong way. A few minutes into the climb, I realized I was pushing...
Forum: Electronic Ignition Systems 01-14-2015, 07:28 PM
Replies: 163
Views: 59,085
Posted By David Z
I have looked at those, the SD-20 as well. But...

I have looked at those, the SD-20 as well. But they are an alternator and require something to excite the windings. That's why I am thinking of a generator. So regardless of what's going on with any...
Forum: Electronic Ignition Systems 01-14-2015, 05:55 PM
Replies: 163
Views: 59,085
Posted By David Z
Has anybody heard of a generator that would be...

Has anybody heard of a generator that would be appropriate as a backup power supply?
The problem with alternators is they need a battery to excite the winding and that adds significant complexity. If...
Forum: Electronic Ignition Systems 01-14-2015, 06:31 AM
Replies: 163
Views: 59,085
Posted By David Z
One thing I don't like about an automatic method...

One thing I don't like about an automatic method of switching to back-up power is it could likely limit the ability to test the backup power source before take-off.

Having 2 alternators is great,...
Forum: RV General Discussion/News 01-12-2015, 08:36 AM
Replies: 9
Views: 2,322
Posted By David Z
That's a lot of flying. I'm only doing 300 hrs a...

That's a lot of flying. I'm only doing 300 hrs a year as a commercial charter pilot! Burnt 5 times the fuel though.
Forum: RV General Discussion/News 01-01-2015, 10:30 AM
Replies: 43
Views: 8,128
Posted By David Z
I used to do a lot of fire detection flights in a...

I used to do a lot of fire detection flights in a Cessna 185 on floats. The engine "auto rough" would kick in shortly after finding a big fire and the spotter wanted to circle overhead to get the...
Forum: RV General Discussion/News 11-22-2014, 07:29 AM
Replies: 40
Views: 13,550
Posted By David Z
I've flown various I/O-320/360/470/520 (and most...

I've flown various I/O-320/360/470/520 (and most of them in bush planes). If your cruising around ROP, it really does not matter, carb or FI. Each cylinder is getting a little too much fuel, makes...
Forum: RV-7/7A 11-03-2014, 07:10 PM
Replies: 38
Views: 10,505
Posted By David Z
Just because the airplane can do it, doesn't mean...

Just because the airplane can do it, doesn't mean it should. Longer runway means more options. The closer to the limits you fly, the fewer options you are leaving yourself.
Forum: RV General Discussion/News 10-19-2014, 10:27 AM
Replies: 14
Views: 2,987
Posted By David Z
Physical Dimensions

2x guns are shorter and will fit into tighter locations.
Showing results 1 to 62 of 272

 
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