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Search: Posts Made By: gmcjetpilot
Forum: RV-7/7A Today, 02:59 PM
Replies: 28
Views: 1,329
Posted By gmcjetpilot
How do you cut field voltage? Field is internal....

How do you cut field voltage? Field is internal. The only thing you have access to is +B (output). The connector on back is typically the "ignition" (wake/sleep) and low volt light. Just asking....
Forum: RV-4 Yesterday, 12:46 PM
Replies: 17
Views: 979
Posted By gmcjetpilot
Gel-coat is hard colored resin they slather in...

Gel-coat is hard colored resin they slather in the mold when they lay it up. This gives an even pinhole free surface. It is very hard and brittle and will crack over time. Heat, vibration,...
Forum: RV General Discussion/News Yesterday, 10:54 AM
Replies: 6
Views: 450
Posted By gmcjetpilot
I am not sure but Greenland is for sale......

I am not sure but Greenland is for sale... Kidding.

What is GA like in Iceland? I know it is critical part of crossing Atlantic for smaller planes.... Reykjavík–Keflavík Airport. I landed there...
Forum: RV-7/7A Yesterday, 10:47 AM
Replies: 21
Views: 2,216
Posted By gmcjetpilot
CR does reduce detonation margins. Detonation is...

CR does reduce detonation margins. Detonation is not detectable by pilot and can cause catastrophic failure (hole in piston). It is avoided by rich mixture and reduced power.

Engines in...
Forum: RV-7/7A Yesterday, 10:39 AM
Replies: 28
Views: 1,329
Posted By gmcjetpilot
HEAT IS THE KILLER.... Shield the Alternator for...

HEAT IS THE KILLER....
Shield the Alternator for exhaust pipe heat as much as possible
Air blast tube on regulator (back) is a good idea.
Balance your prop... fixed or CS... less vibe's the...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 08-20-2019, 02:17 PM
Replies: 26
Views: 2,831
Posted By gmcjetpilot
First I am not saying what kind of idea it is. I...

First I am not saying what kind of idea it is. I am asking what has been done and what was the application and outcome.

Where do you pull that number out of? I see the appeal to authority, but we...
Forum: Safety 08-20-2019, 01:34 PM
Replies: 9
Views: 1,055
Posted By gmcjetpilot
Don't Stall, ever never ever. Use all your...

Don't Stall, ever never ever.
Use all your skills, S-turns, forward slips.....
Fly the plane all the way into the crash as long as you can. (Bob Hoover)
Slow to min controllable speed before impact /...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 08-19-2019, 01:23 PM
Replies: 26
Views: 2,831
Posted By gmcjetpilot
I own a R1150RT BMW twin plug horz opposed twin...

I own a R1150RT BMW twin plug horz opposed twin air oil cooled. It is a great engine. It can cruse all day and night doing 90 mph (I don't ride that fast but just saying).

Thanks for the great...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 08-19-2019, 01:19 PM
Replies: 26
Views: 2,831
Posted By gmcjetpilot
Dear Moderator, why did you move this from...

Dear Moderator, why did you move this from Alternative Engines Section? Is that not appropriate? I got a lot of great replies... so no worries. Sorry if I screwed up (again ha ha).
Forum: RV General Discussion/News 08-19-2019, 11:17 AM
Replies: 56
Views: 4,052
Posted By gmcjetpilot
You mean MPG? With the fancy electronic engine...

You mean MPG? With the fancy electronic engine monitoring today you can get real time economy based on many factors, including ground speed.

There is no way to answer your question because of so...
Forum: Alternative Engines 08-17-2019, 06:05 PM
Replies: 30
Views: 10,993
Posted By gmcjetpilot
Post Well this went into full thread drift. Back to...

Well this went into full thread drift. Back to Delta Hawk. That's pretty interesting they want you to pay 80 to $90,000 to be a beta tester and use your airplane to prototype different...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 08-17-2019, 05:56 PM
Replies: 26
Views: 2,831
Posted By gmcjetpilot
What about motorcycle engines.

Many motorcycle engines are still air-oil-cooled, small lightweight and put out a whole bunch of horsepower. ImI saw a long time ago somebody put a BMW horizontally-opposed twin in a BD5. I think...
Forum: Safety 08-16-2019, 12:52 PM
Replies: 16
Views: 2,984
Posted By gmcjetpilot
ELT on/off/armed aside he had a Personal Locator...

ELT on/off/armed aside he had a Personal Locator Beacon or PLB that he was getting text messages... better than ELT.

There seems to be a real focus on a bug shirt. OK. Winter? Hypothermia is your...
Forum: RV General Discussion/News 08-16-2019, 10:06 AM
Replies: 21
Views: 7,818
Posted By gmcjetpilot
I read through the thread.... my input trying to...

I read through the thread.... my input trying to be useful.

AOG - Post your predicament here ask for help when it happens.

EAA - If member find a chapter nearby. Typically EAA lists chapter contact...
Forum: RV General Discussion/News 08-14-2019, 11:32 AM
Replies: 23
Views: 3,098
Posted By gmcjetpilot
If you have a wood prop that is something to...

If you have a wood prop that is something to worry about with any rain. Aluminum props can get eroded in rain. That is why you keep the pain on it. The fancy composite props have SS leading edge but...
Forum: Safety 08-13-2019, 11:18 AM
Replies: 16
Views: 2,984
Posted By gmcjetpilot
Canada dispatched a C130 and helicopter.... I...

Canada dispatched a C130 and helicopter.... I hope he does not have to pay for it...

He was almost impaled by tree that went though cockpit right next to his left leg.

With out a chute he would...
Forum: RV General Discussion/News 08-13-2019, 11:11 AM
Replies: 50
Views: 4,142
Posted By gmcjetpilot
Avgas has a lower and more uniform vapor pressure...

Avgas has a lower and more uniform vapor pressure than automotive gasoline so it remains in the liquid state despite the reduced atmospheric pressure at high altitude, thus preventing vapor...
Forum: RV General Discussion/News 08-08-2019, 01:51 PM
Replies: 86
Views: 6,717
Posted By gmcjetpilot
Has anyone looked at the nose of a Piper...

Has anyone looked at the nose of a Piper Tri-pacer. it was one of the first Trikes. The wheel and tire are huge, the oleo strut is beefy and braced. A friend was in the short wing piper club told me...
Forum: RV General Discussion/News 08-05-2019, 04:25 PM
Replies: 86
Views: 6,717
Posted By gmcjetpilot
You make great points. If you're not close to...

You make great points. If you're not close to installing the engine mount and nose gear you can wait. I don't know what the lead time is on it.

As far as statistics nothing official. If someone's...
Forum: Safety 08-04-2019, 02:53 PM
Replies: 20
Views: 2,240
Posted By gmcjetpilot
I agree with you 100%, but... Not all pilots have...

I agree with you 100%, but... Not all pilots have your experiences and skill. RVs are very low drag and fast. The sink rate can get breathtaking at slow back side airspeed while feeling controllable...
Forum: RV General Discussion/News 08-02-2019, 08:00 AM
Replies: 65
Views: 6,217
Posted By gmcjetpilot
How about links to these seminal RV's? Please

How about links to these seminal RV's? Please
Forum: Safety 08-02-2019, 07:44 AM
Replies: 20
Views: 2,240
Posted By gmcjetpilot
Plus + 1. You answered your own question. It is...

Plus + 1. You answered your own question. It is legal. Insurance is another question. Yours and his judgement call.

I have been asked to fly in owner SEL planes for Flight reviews. or Inst Comp...
Forum: RV General Discussion/News 08-02-2019, 07:27 AM
Replies: 86
Views: 6,717
Posted By gmcjetpilot
You could always put the nose wheel on the...

You could always put the nose wheel on the back... where it belongs... Ha ha :D

I appologize.

What is the big difference with the new gear?
Is it more draggy?
Is it heaver?
How much testing has...
Forum: RV General Discussion/News 07-31-2019, 11:05 AM
Replies: 66
Views: 10,561
Posted By gmcjetpilot
Did not read all the post but was it not the bad...

Did not read all the post but was it not the bad weather on Friday and Saturday before the show which caused most of the issues... Even after WX the ground was too wet to park planes. Oshkosh has...
Forum: RV-6/6A 07-27-2019, 03:55 PM
Replies: 20
Views: 3,824
Posted By gmcjetpilot
Yep slowing down (especially with a tail wind,...

Yep slowing down (especially with a tail wind, can be nice and save fuel... and as you say more time for sightseeing and less engine noise. 5.5GPH is pretty good.... 750 Stat miles in 5 hours with 1...
Forum: RV General Discussion/News 07-27-2019, 09:53 AM
Replies: 7
Views: 600
Posted By gmcjetpilot
It likely is not as bad as you think and no one...

It likely is not as bad as you think and no one will notice... the parts are standard Van's made on molds... Post a pic so the peanut gallery can judge it... Ha ha.

Comment made about getting the...
Forum: RV General Discussion/News 07-21-2019, 02:10 PM
Replies: 3
Views: 450
Posted By gmcjetpilot
What airframe? RV-? Call Hartzell. You may have...

What airframe? RV-? Call Hartzell. You may have to wait two weeks, due to Oshkosh. I could not find the exact blade and engine combo...

I found one good match.... for 180HP Commanche with your...
Forum: RV-7/7A 07-21-2019, 01:50 PM
Replies: 2
Views: 727
Posted By gmcjetpilot
You can leave it or You can fix it. Fix -...

You can leave it or You can fix it.

Fix - remove the fairing you want to move. Glass over the old holes and trim the tire opening to fit... you may have to glass in the larger tire to fairing gap...
Forum: Safety 07-20-2019, 08:05 PM
Replies: 15
Views: 4,690
Posted By gmcjetpilot
Thanks Carl for the report. Inflight fire every...

Thanks Carl for the report. Inflight fire every Pilots nightmare. I'm glad the outcome was not tragic.

There was a similar accident with an RV8 N41VA 20 years ago. This was also in Oregon. Total...
Forum: RV General Discussion/News 07-20-2019, 07:37 PM
Replies: 7
Views: 795
Posted By gmcjetpilot
It's experimental you can set what you want, with...

It's experimental you can set what you want, with a big caveat. 2700 or 2775 rpm is not a big deal. If you want to be conservative 2700. You did your research well.

You make more horsepower and...
Forum: RV General Discussion/News 07-20-2019, 07:09 PM
Replies: 2
Views: 557
Posted By gmcjetpilot
It depends on engine, carb or FI, Mag vs EI, prop...

It depends on engine, carb or FI, Mag vs EI, prop CS vs Fixed, instruments basic or full EFIS with autopilot, upholstery, paint, quality of build, age and hours on the components and on. $100,000 is...
Forum: RV General Discussion/News 07-18-2019, 11:40 AM
Replies: 20
Views: 4,124
Posted By gmcjetpilot
I'll second that. Carl knows his stuff on...

I'll second that. Carl knows his stuff on aero-elasticity (flutter). Besides weight (affecting payload), increased wing bending (affecting ability to do aerobatics) and reduced flutter margins, I'll...
Forum: RV General Discussion/News 07-18-2019, 11:29 AM
Replies: 18
Views: 2,897
Posted By gmcjetpilot
If you don't like it shut down and get out and...

If you don't like it shut down and get out and check it out. If you are parking in the RV area you will taxi mostly on hard surface until you get to grass parking area. The hard surface to grass...
Forum: RV General Discussion/News 07-18-2019, 11:23 AM
Replies: 15
Views: 1,509
Posted By gmcjetpilot
Even with holes in it, it is part of the...

Even with holes in it, it is part of the structure and will pick up loads. Take the panel out and push on the sides of the fuselage where the panel was you took out. The fuselage will flex more than...
Forum: RV-7/7A 07-18-2019, 09:43 AM
Replies: 3
Views: 1,020
Posted By gmcjetpilot
Good info on both parts, engine mount length and...

Good info on both parts, engine mount length and change of ownership of sam james.... Hope Sam is well. Cool guy....
Forum: RV-7/7A 07-18-2019, 09:40 AM
Replies: 3
Views: 713
Posted By gmcjetpilot
The RV with a Lycoming has similar engine...

The RV with a Lycoming has similar engine operating procedures (leaning) as any Cessna, Piper, Grumman with a Lyc.

Experimentals vary and you can validate your own burn, speeds, power settings. All...
Forum: Safety 07-17-2019, 01:17 PM
Replies: 6
Views: 511
Posted By gmcjetpilot
H ELT has both Horz and vertical G sensing, ...

H ELT has both Horz and vertical G sensing, where airplane is Horz only, fwd and aft. ELT's are not that expensive. Also you want newer one that operates on 406 MHz and has GPS position.

That...
Forum: RV General Discussion/News 07-17-2019, 01:08 PM
Replies: 17
Views: 2,403
Posted By gmcjetpilot
Been awhile since I researched that. My...

Been awhile since I researched that. My understanding is if you have a certified appliance (engine, prop, carb, mag) that has an AD you are obliged to comply (based on opinion not facts). The out is...
Forum: RV General Discussion/News 07-16-2019, 06:11 AM
Replies: 15
Views: 1,509
Posted By gmcjetpilot
Actually 2024-T3 is X2 stronger than 6061-T4....

Actually 2024-T3 is X2 stronger than 6061-T4. Common temper for 6061 is T4 or T6

Alloy Temper E G Yield ...
Forum: RV-4 07-02-2019, 11:16 AM
Replies: 11
Views: 1,526
Posted By gmcjetpilot
You are good... me and Charlie got side...

You are good... me and Charlie got side tracked... My bad....

So if you are not a builder there is time to kearn.:D That thread I linked to was pretty good start. Search these forums for more...
Forum: RV-4 07-02-2019, 07:41 AM
Replies: 11
Views: 1,526
Posted By gmcjetpilot
You are right. The main bits are the primary load...

You are right. The main bits are the primary load path. The SS Firewall is secondary. So we are talking terms, primary structure vs. secondary structure. Just looking at the structure you can see the...
Forum: RV-4 07-02-2019, 05:53 AM
Replies: 11
Views: 1,526
Posted By gmcjetpilot
I would take cracks in the firewall seriously....

I would take cracks in the firewall seriously. Who did you talk to? What did they say? Do you have this in writing? I just disagree the firewall is "not structural". Only one person at Van's Aircraft...
Forum: RV-4 07-01-2019, 12:44 PM
Replies: 11
Views: 1,526
Posted By gmcjetpilot
The fire wall is not structural? Really. Let's...

The fire wall is not structural? Really. Let's exam that. The Engine mount is ridged weldment. It connects at four points (landing gear loads also go through the engine mount as well).

The firewall...
Forum: RV-6/6A 07-01-2019, 11:30 AM
Replies: 20
Views: 3,824
Posted By gmcjetpilot
You think it is low or high? I did a quick check...

You think it is low or high? I did a quick check and found $17K-$21K (OH cyc vs New cylinders). However that is certified.

If experimental you can get a whole brand new O-320 engine for $26K...
Forum: RV-6/6A 07-01-2019, 10:07 AM
Replies: 20
Views: 3,824
Posted By gmcjetpilot
ts

Van's RV are one of the kits that was sold back in the day to present that actually did what was advertised. Issues with speed? Could be different things. Have a picture?

"The owner says they get...
Forum: RV General Discussion/News 07-01-2019, 08:40 AM
Replies: 56
Views: 4,706
Posted By gmcjetpilot
Where do you park it? Ha ha. (PS make sure it is...

Where do you park it? Ha ha. (PS make sure it is full) :D
Forum: RV General Discussion/News 07-01-2019, 08:30 AM
Replies: 56
Views: 4,706
Posted By gmcjetpilot
Theft Prevention - Key ignition or not

So how many of you have a key "mag switch", e.g., the typical KEY switch, L & R & BOTH and CRANK.... verses just toggles and push button?

My thought is to put a kidden kill switch, hidden mechanical...
Forum: Safety 06-28-2019, 08:25 AM
Replies: 41
Views: 4,949
Posted By gmcjetpilot
Since I started this thread I went and looked for...

Since I started this thread I went and looked for statistics. They are hard to come by. The biggest study (and it was extensive), was when increasing the Airline pilot mandatory retirement age from...
Forum: Safety 06-27-2019, 09:33 AM
Replies: 41
Views: 4,949
Posted By gmcjetpilot
The key here is "Individual". It is not the age...

The key here is "Individual". It is not the age but the individual person. Some people age quicker. Some pilots who are marginal at 50 don't get better when they are 75. Some pilots at 80 are still...
Forum: Safety 06-27-2019, 06:34 AM
Replies: 41
Views: 4,949
Posted By gmcjetpilot
Age and flying

I noticed many RV accidents involve pilots in their late 50's or 60's or much older. This Gentleman was 90 and still flying. I have no idea if his age was a factor and his medical status. He held a...
Forum: RV-4 06-26-2019, 12:36 PM
Replies: 5
Views: 1,039
Posted By gmcjetpilot
Great points but I think (no scientific data)...

Great points but I think (no scientific data) that the SJ wheel pants are a bit faster (not as big as Van's pants). I definitely like the looks better.
Forum: RV-6/6A 06-26-2019, 11:44 AM
Replies: 3
Views: 898
Posted By gmcjetpilot
I assume the light (which is yellow) is a...

I assume the light (which is yellow) is a discrete light in your panel wired direct to the ND alternator. EFIS (internal voltage)/Alternator voltage (Bus voltage) is OK or normal as shown on EFIS...
Forum: Safety 06-26-2019, 09:35 AM
Replies: 16
Views: 3,159
Posted By gmcjetpilot
The torque strip is primarily a QA marking to...

The torque strip is primarily a QA marking to indicate that it was torqued to final torque during initial installation, but it does nothing to keep it backing off. It is also NOT for determining if...
Forum: RV General Discussion/News 06-25-2019, 09:52 AM
Replies: 23
Views: 2,039
Posted By gmcjetpilot
The problem is how much training will you...

The problem is how much training will you actually do. How much can you charge people and are willing to pay, while breaking even. Doing the math, say hull insurance is $2000 a year for training. If...
Forum: RV General Discussion/News 06-25-2019, 08:36 AM
Replies: 11
Views: 1,526
Posted By gmcjetpilot
Does anyone have a discription or picture for...

Does anyone have a discription or picture for slider jettison. I know there is a user modification, but did not know Van's aircraft has it in the plans for sliders.... I searched the forum and there...
Forum: RV General Discussion/News 06-24-2019, 11:41 AM
Replies: 4
Views: 627
Posted By gmcjetpilot
You can draw most of your own V-N diagram from...

You can draw most of your own V-N diagram from Van's specifications Load factor (n) (Plus g/Minus g) and the RV-12 V-speeds (Vs, Vo, Vno, Vne). The V-N diagram is based on this. Some points can be...
Forum: RV-8/8A 06-24-2019, 09:32 AM
Replies: 10
Views: 1,726
Posted By gmcjetpilot
Talked to many Hartzell Reps at air shows. All...

Talked to many Hartzell Reps at air shows. All nice but not all are same in technical department. All of their props (BA or not) have blunt (round) blade roots, to transition to hub. The extra...
Forum: RV General Discussion/News 06-24-2019, 09:01 AM
Replies: 11
Views: 1,526
Posted By gmcjetpilot
Unless you have a sliding canopy. Only for tip...

Unless you have a sliding canopy. Only for tip up. Yes obvious but may have some new folks.
Forum: Electronic Ignition Systems 06-20-2019, 11:53 AM
Replies: 18
Views: 2,654
Posted By gmcjetpilot
As stated test it for resistance. The resistance...

As stated test it for resistance. The resistance between the terminal and the metal base (ground) should be low. (Google it or youtube has lots of instructions on how to do this.)

If the resistance...
Forum: RV-7/7A 06-20-2019, 11:38 AM
Replies: 15
Views: 2,258
Posted By gmcjetpilot
That is what I was going to say, one jug is...

That is what I was going to say, one jug is enough.

As far as no primer, that's an option. The punp throttle method is doable. HOWEVER don't over do it and WAIT.


Pump throttle (accelerator pump...
Forum: RV General Discussion/News 06-20-2019, 11:21 AM
Replies: 37
Views: 4,236
Posted By gmcjetpilot
You got a hat? All I got was a dumb CFI...

You got a hat? All I got was a dumb CFI certificate. What do they look like. Does it say Make Aviators Great Airmen? Oh I have seen those. :D

Would you care to disclose your plane and CFI...
Forum: RV General Discussion/News 06-20-2019, 05:09 AM
Replies: 17
Views: 1,668
Posted By gmcjetpilot
Well that is said but many pilots hang up the...

Well that is said but many pilots hang up the flying without a GL. However the saying is meant to keep you from being complacent.

Per FAR you don't need an enforcement if you were PIC of TW plane...
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