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Search: Posts Made By: gmcjetpilot
Forum: COMM 02-01-2019, 08:05 PM
Replies: 25
Views: 1,961
Posted By gmcjetpilot
Beat to death, but you are right to an...

Beat to death, but you are right to an extent.
http://www.vansairforce.com/community/showthread.php?t=75839

RG400 has less loss than RG58. RG400 loss is 9.5 dB /100ft.
RG58 loss is 14 db / 100 ft....
Forum: COMM 02-01-2019, 07:46 PM
Replies: 25
Views: 1,961
Posted By gmcjetpilot
Huh? Are you trying to be insulting, like what I...

Huh? Are you trying to be insulting, like what I said was dumb? Did I offend you? Let me ask you WHY use a TV antenna? The radials need to be about 25" long and fixed angle. Here is why a TV antenna...
Forum: COMM 01-31-2019, 03:31 PM
Replies: 25
Views: 1,961
Posted By gmcjetpilot
+1... yes TV rabbit ears (dipole) would "work" in...

+1... yes TV rabbit ears (dipole) would "work" in theory, yet NOT... One they are adjustable in length, you don't want that. You want them tuned to the VOR/ILS/LOC Freq., one length will work 25"....
Forum: RV Building Tips/Techniques 01-25-2019, 08:38 PM
Replies: 46
Views: 5,587
Posted By gmcjetpilot
What makes one think these are BETTER? Ad hype......

What makes one think these are BETTER? Ad hype... proof?

What makes one think that lock washers or star washers don't work?

A few reasons for not using the newest lock washer.
1) Inertia - In...
Forum: RV-7/7A 01-25-2019, 07:41 PM
Replies: 13
Views: 1,275
Posted By gmcjetpilot
+1 on nice work.... battleship strong? You can't...

+1 on nice work.... battleship strong? You can't be too strong with baffle mounted oil coolers. First they are heavy oil filed things with large hoses hanging off them. The OC integral flanges are...
Forum: RV General Discussion/News 01-03-2019, 04:28 PM
Replies: 15
Views: 1,318
Posted By gmcjetpilot
I did not eyeball the plane but it was online. It...

I did not eyeball the plane but it was online. It looked nice, $42K for an RV-4. It looked nice. I think it had a Dynon D-10 and mix of mechanical gauges... It had a fixed sensenich, recall 160HP... ...
Forum: RV General Discussion/News 01-03-2019, 12:07 PM
Replies: 15
Views: 2,035
Posted By gmcjetpilot
This is right up my alley. It is likely the...

This is right up my alley. It is likely the scratch is ONLY in the soft clad (almost pure aluminum) finish which is a few thousands thick.... tDrag your finger nail at right angle to the scratch....
Forum: RV General Discussion/News 01-02-2019, 05:44 PM
Replies: 39
Views: 5,345
Posted By gmcjetpilot
Dynon EFIS? That's more information displayed...

Dynon EFIS? That's more information displayed than a B757 or B767...

Need O2 at 10,000-12,000 feet more than 30 min or above 12,000. FL190 would be a must... Hypoxia makes your thinking dull and...
Forum: RV-8/8A 01-01-2019, 12:18 PM
Replies: 50
Views: 13,236
Posted By gmcjetpilot
Great question and you are right. The drag you...

Great question and you are right. The drag you talk of is called "interference drag". It is low speed air mixing with high speed air at angles. The mixing is drag. However as was said there are...
Forum: Propellers 12-29-2018, 07:42 AM
Replies: 57
Views: 12,703
Posted By gmcjetpilot
Not doubting what you are saying Sam; maybe you...

Not doubting what you are saying Sam; maybe you have some personal experience,
but the spinner is not that super critical for one reason. The blade shape near the hub,
just outside the spinner, is...
Forum: Propellers 12-29-2018, 07:21 AM
Replies: 57
Views: 12,703
Posted By gmcjetpilot
As other said or implied these prop makers were...

As other said or implied these prop makers were one man shows, hand made
props by an individual, not a corporation, typically an older gentlemen who
retired and/or passed away.

The other factor...
Forum: RV General Discussion/News 12-13-2018, 04:16 PM
Replies: 14
Views: 1,132
Posted By gmcjetpilot
I had an RV-4 and flew it for 7 years before I...

I had an RV-4 and flew it for 7 years before I sold her :( . I even flew IFR IMC... The canopy never fogged. If you are worried get some kind of electric heater you can plug into a Cig lighter...
Forum: RV General Discussion/News 12-11-2018, 04:59 PM
Replies: 30
Views: 2,882
Posted By gmcjetpilot
Well the drug runners have a few cars drive to...

Well the drug runners have a few cars drive to ends of runway and turn on the high beams.... :eek: (from what I see in the movies...)

This is not a recommendation but curiosity. I have a bunch of...
Forum: RV General Discussion/News 12-11-2018, 04:39 PM
Replies: 12
Views: 1,635
Posted By gmcjetpilot
I had one of the originals on my RV-4 (it was...

I had one of the originals on my RV-4 (it was custom made on my plane and used to make mold). It became the start of this business.... Glad to see they are continuing under new ownership...

From...
Forum: RV General Discussion/News 12-11-2018, 04:35 PM
Replies: 12
Views: 858
Posted By gmcjetpilot
What are you going to use the most (switch,...

What are you going to use the most (switch, control). Where are your hands when flying (control stick, throttle, prop, mixture, occasionally avionics/radio/nav)

Make a full sized poster board...
Forum: RV General Discussion/News 12-11-2018, 04:23 PM
Replies: 45
Views: 12,262
Posted By gmcjetpilot
This is why I am thinking going Dynon or GRT for...

This is why I am thinking going Dynon or GRT for EFIS....
Forum: Probable Cause Documents Discussed 12-09-2018, 11:11 AM
Replies: 22
Views: 5,650
Posted By gmcjetpilot
You are right but kind of missing the point......

You are right but kind of missing the point... "Engine out landing" means what? Landing with no power (idle)? We all do that for the most part every flight, as we should be at idle at or just before...
Forum: RV General Discussion/News 12-05-2018, 02:57 PM
Replies: 36
Views: 3,055
Posted By gmcjetpilot
Ha ha ha ha... Bill I tried to send PM but your...

Ha ha ha ha...

Bill I tried to send PM but your inbox is full. Sent email. Hope you get it. Thanks
Forum: RV General Discussion/News 12-04-2018, 06:19 AM
Replies: 23
Views: 1,226
Posted By gmcjetpilot
Hi-Loks are very expensive fasteners and have...

Hi-Loks are very expensive fasteners and have specific collars. They come in titanium, steel and high strength and high temperature nickle alloys. They are again not cheap. If you have the part...
Forum: RV-7/7A 12-04-2018, 01:50 AM
Replies: 7
Views: 1,109
Posted By gmcjetpilot
What Airplane do you have? Model and tail dragger...

What Airplane do you have? Model and tail dragger or tricycle gear?

I had metal on my first RV-4 and the big difference is they are not as aerodynamic, not as wide, narrow chord. Never had a lick...
Forum: RV General Discussion/News 12-03-2018, 05:20 PM
Replies: 36
Views: 3,055
Posted By gmcjetpilot
Dave I am in the same boat. Folks are being kind...

Dave I am in the same boat. Folks are being kind of harsh... if you can't say something nice or helpful don't..... Ha ha. You are doing good. My 1958 PA-23-160 (Piper Apache Twin) had metal plenums!...
Forum: RV-4 11-29-2018, 09:51 PM
Replies: 473
Views: 289,067
Posted By gmcjetpilot
Got to chime in on prop gov oil line. That thing...

Got to chime in on prop gov oil line. That thing is very critical.
If it fails you loose all your oil. So make sure you:


Use new stainless steel line (hard line or flexiable line is an option)
...
Forum: RV-7/7A 11-29-2018, 09:32 PM
Replies: 7
Views: 844
Posted By gmcjetpilot
I just came to understand why some LED's suck up...

I just came to understand why some LED's suck up current initially, when turned on. Many LED lights have a dedicated power supply, driving the LED(s). The power supply can draw a high current...
Forum: RV Photo/Video URLs 11-26-2018, 09:53 PM
Replies: 5
Views: 1,501
Posted By gmcjetpilot
So what LOM engine is this? Do you have M332C...

So what LOM engine is this?

Do you have M332C supercharged version:
http://www.pistovemotory.cz/en/m332a-m332ak-m332c

OR do you have

Walter-LOM M332B
160 HP, 4 cylinder
Forum: RV General Discussion/News 11-24-2018, 05:48 PM
Replies: 49
Views: 5,927
Posted By gmcjetpilot
Not to get into Fuse vs CB argument, but I am old...

Not to get into Fuse vs CB argument, but I am old school. I have a fancy 50 amp Circuit breaker in the panel, I can pull or reset. Would I reset it if it tripped ? Likely not. However I could pull it...
Forum: ADS-B 11-23-2018, 09:30 PM
Replies: 95
Views: 16,978
Posted By gmcjetpilot
People are "heads down" focused on their glass,...

People are "heads down" focused on their glass, can lose the art of scanning for traffic and situational awareness. ADS-B "IN" is a wonderful thing, but sole over reliance on it for traffic avoidance...
Forum: RV General Discussion/News 11-22-2018, 05:08 PM
Replies: 49
Views: 8,123
Posted By gmcjetpilot
Great stuff. RV7Guy good criterion, airport...

Great stuff.

RV7Guy good criterion, airport near shopping & restaurants (not too rural/remote).
Florida comes up often for many (weather) reasons. Hard to go too wrong.
Love South West high...
Forum: RV General Discussion/News 11-22-2018, 04:26 PM
Replies: 5
Views: 989
Posted By gmcjetpilot
What did you buy specifically? I am looking at...

What did you buy specifically? I am looking at the single MR15 sized light...
Forum: RV General Discussion/News 11-21-2018, 06:22 PM
Replies: 49
Views: 8,123
Posted By gmcjetpilot
r

The thread got hijacked a little with Texas, but can we please keep it general

Thank you for the great detailed post... Just what I was looking for,
personal experience or specific air parks you...
Forum: Propellers 11-20-2018, 04:41 PM
Replies: 4
Views: 898
Posted By gmcjetpilot
Good Info. Hartzell has STC's to replace the...

Good Info. Hartzell has STC's to replace the older F7666 prop blade with the F7497 (Mooney, Piper...). This is for stock certified 180 and 200 HP engines with magnetos. 200HP IO-360's have counter...
Forum: Propellers 11-20-2018, 01:28 PM
Replies: 4
Views: 898
Posted By gmcjetpilot
Thanks for the correction and clarification. This...

Thanks for the correction and clarification. This is what Hartzell sent me:

New Hartzell "Blended Airfoil" HC-(C,F,M)2YR-1(B)FP/F7497 Prop Recommended For Lycoming O-360-A1(A, C, D, F, G, H, P) and...
Forum: RV General Discussion/News 11-20-2018, 12:09 AM
Replies: 49
Views: 8,123
Posted By gmcjetpilot
Best Place to Retire and Airport Fly-In Communities

Any one have an opinion? I'm about 10 years from the final approach to the retirement fix, but want to start planning. I'd love living at an airport community or shared private strip.

I always...
Forum: Propellers 11-19-2018, 01:56 PM
Replies: 4
Views: 898
Posted By gmcjetpilot
Hartzell Blended Airfoil Blade 7496 vs New 7497 Performance & Limitations

The BA prop came out about 2003 and has restrictions of RPM and/or MP, as noted in Vans Information and notices March 2003. This was blade 7496.

The new BA blade is 7497. This newer design was a...
Forum: Electronic Ignition Systems 11-16-2018, 06:26 PM
Replies: 28
Views: 4,253
Posted By gmcjetpilot
Sounds like you have a plan... Good luck. Have...

Sounds like you have a plan... Good luck. Have fun. :) As far as 40 amp draw to charge the #2, that is a lot, even if transient. I believe you, but I'm also of the opinion for a PC680 (18 Ahr)...
Forum: Electronic Ignition Systems 11-15-2018, 05:31 PM
Replies: 28
Views: 4,253
Posted By gmcjetpilot
I like to see a diagram to understand what you...

I like to see a diagram to understand what you are doing AND how the diode can blow. Here are my thoughts.

1) Reconsider having a dual large battery starter idea, it may not be necessary, adding...
Forum: Electronic Ignition Systems 11-15-2018, 01:47 AM
Replies: 78
Views: 13,147
Posted By gmcjetpilot
I was reading the SDS CDI installation manual....

I was reading the SDS CDI installation manual.

Be sure to remove any parts which are not positively held in place once the mags are removed. If these come loose inside the engine, severe damage or...
Forum: Electronic Ignition Systems 11-14-2018, 08:26 PM
Replies: 28
Views: 4,253
Posted By gmcjetpilot
Thanks Ross. I just got up to speed on your...

Thanks Ross. I just got up to speed on your CPI2... I am standing by to see that progress. My plan was two CPI's and do the OV protection myself, but depending on price I think I'll switch to the...
Forum: Electronic Ignition Systems 11-14-2018, 07:35 PM
Replies: 28
Views: 4,253
Posted By gmcjetpilot
This is an interesting thread. I went down the...

This is an interesting thread. I went down the same paths...


Diode to isolate your E-bus battery

DC to DC charger is interesting, one way to go.

Aux battery protection device like the Chinese...
Forum: Electronic Ignition Systems 11-14-2018, 05:05 PM
Replies: 230
Views: 35,899
Posted By gmcjetpilot
I read the whole thread... whoooa. Ross you are a...

I read the whole thread... whoooa. Ross you are a patient man. Take all the armchair designers input with grain of salt, and don't rush nothing. Take all the time you need or want.

On a serious...
Forum: Glass Cockpit 11-14-2018, 03:58 AM
Replies: 25
Views: 4,129
Posted By gmcjetpilot
Everyone knows if you want to get into an...

Everyone knows if you want to get into an Aviation business, you can easily end up with a million dollars in no time !!! .... just start with ten million. :rolleyes: :p :eek:

:eek:
Forum: Probable Cause Documents Discussed 11-13-2018, 08:49 PM
Replies: 8
Views: 1,907
Posted By gmcjetpilot
You don't have to stay over the same airport or...

You don't have to stay over the same airport or you can be high enough and fly a race track pattern at 174kts, staying in glide distance to some landing area... it can be done. But point taken. I am...
Forum: Probable Cause Documents Discussed 11-13-2018, 08:26 PM
Replies: 24
Views: 15,141
Posted By gmcjetpilot
Not sure if you all know you can look up the...

Not sure if you all know you can look up the backing data.

The "structures groups chrirman's reports" go into 4 pages of details. One item popped up

"All the fractures examined had a dull, grainy...
Forum: Electronic Ignition Systems 11-13-2018, 05:56 PM
Replies: 142
Views: 19,331
Posted By gmcjetpilot
SDS CDI - This thread is a little stale. Can we...

SDS CDI - This thread is a little stale. Can we get an update from SDS on the state SDS news.... What changes have been made in a last year and what is to come. Thanks.
Forum: Electronic Ignition Systems 11-13-2018, 05:00 PM
Replies: 46
Views: 14,451
Posted By gmcjetpilot
...any chance to update this list. It seems...

...any chance to update this list. It seems pretty dated.

Cheers.
Forum: RV-10 11-10-2018, 12:23 AM
Replies: 23
Views: 6,012
Posted By gmcjetpilot
Being the manufacturer and maintenance shop, able...

Being the manufacturer and maintenance shop, able to do modifications and use your own fabricated parts or "experimental" parts (engine, prop, avionics, EFIS), with less FAA restrictions, is...
Forum: RV-7/7A 11-08-2018, 05:29 PM
Replies: 16
Views: 2,461
Posted By gmcjetpilot
So your are south of equator, "down under". So...

So your are south of equator, "down under". So does the propeller turn in the opposite direction in NZ? (or is that water circles down the drain opposite from Northern hemisphere) :D Good luck.
Forum: RV-10 11-08-2018, 05:16 PM
Replies: 23
Views: 6,012
Posted By gmcjetpilot
Wow you are so young in the picture... :D Nice...

Wow you are so young in the picture... :D
Nice plane and a 4 way partnership makes a lot of sense.
Forum: RV-10 11-06-2018, 10:01 PM
Replies: 23
Views: 6,012
Posted By gmcjetpilot
Fly off please... That would be great to do a...

Fly off please... That would be great to do a side by side comparison. It seems to me Richard VanGrunsven was looking at the Commanche for a bench mark. I recall reading somewhere long ago when he...
Forum: Traditional Aircraft Engines 11-06-2018, 08:52 PM
Replies: 32
Views: 6,449
Posted By gmcjetpilot
If you want min vibrations go back with LORD.......

If you want min vibrations go back with LORD.... Berry is cheaper and less engineered....

I have had the gel vibration dampers go 1000's of hours and keep on going. You have to
be careful not to...
Forum: Probable Cause Documents Discussed 10-31-2018, 01:23 AM
Replies: 8
Views: 1,907
Posted By gmcjetpilot
Stay Within Gliding Distance of Airports w/i Phase 1 (maybe)

Stay Within Gliding Distance of Airports w/i Phase 1 (maybe)

I get "Kit Plane" and they discussed an RV-10 accident (2013) where the oil line became disconnected, causing engine stoppage and forced...
Forum: RV-7/7A 10-28-2018, 01:19 PM
Replies: 10
Views: 1,143
Posted By gmcjetpilot
I think there is a tad of over worry about all...

I think there is a tad of over worry about all this, but following the
recommendations from the manufacture is almost always a good idea.

RV's are small planes and there are limited places to...
Forum: Traditional Aircraft Engines 10-24-2018, 09:44 PM
Replies: 9
Views: 1,553
Posted By gmcjetpilot
The crank does not need to be replaced...

The crank does not need to be replaced necessarily. It should be inspected. If it is good you don't need to replace it. Even of the prop flange is slightly out of true, it can be straightened.

You...
Forum: RV-7/7A 10-23-2018, 04:16 PM
Replies: 14
Views: 1,960
Posted By gmcjetpilot
OP Matt has a good grasp on aerobatics and...

OP Matt has a good grasp on aerobatics and different designs. RV's are fun "total performance" airplanes but not pure aerobatics, so roll rate is academic wing tips or not. The difference will be...
Forum: Propellers 10-21-2018, 09:02 PM
Replies: 7
Views: 1,141
Posted By gmcjetpilot
Ditto the prop will not change pitch at low...

Ditto the prop will not change pitch at low RPM... as folks say above. I don't think there is a specific RPM it will work or not work... it is a function of oil pressure. I would not attempt to cycle...
Forum: RV-9/9A 10-21-2018, 08:38 PM
Replies: 12
Views: 1,960
Posted By gmcjetpilot
With an A model your tail is high. I like putting...

With an A model your tail is high. I like putting a di-pole twin whiskers on top of rudder under tip fairing. This is a great location and drag increase is tiny (fraction of a mph). The thin metal...
Forum: RV-7/7A 10-21-2018, 08:13 PM
Replies: 14
Views: 1,960
Posted By gmcjetpilot
What Skylor said... If you want fast roll rate NO...

What Skylor said... If you want fast roll rate NO wing tip (flat plate wing fence) may be better for roll rate (not drag). However RV's are great for aerobatics and have plenty fast roll rate with...
Forum: RV-7/7A 10-12-2018, 02:24 PM
Replies: 7
Views: 1,062
Posted By gmcjetpilot
Mel look down this page about 60% down, yellow...

Mel look down this page about 60% down, yellow RV-4 with that sexy spinner.

http://www.kitplanes.com/issues/29_7/builder_spotlight/Firewall_Forward_Choosing_a_Prop_for_Your_Project_20498-1.html

Mel...
Forum: RV-7/7A 10-12-2018, 02:16 PM
Replies: 7
Views: 1,062
Posted By gmcjetpilot
EDIT I found a number (2 r's in Harrold) but did...

EDIT I found a number (2 r's in Harrold) but did not try it yet: EDIT (I called it. No ring goes straight to Automatic message: Person you are trying to reach is not accepting calls, please try your...
Forum: RV-7/7A 10-11-2018, 05:11 PM
Replies: 7
Views: 1,062
Posted By gmcjetpilot
Pointy Spinner With Hidden Screws - Where To Find

I had a Pointy Spinner on my RV-4 with no screws. I forgot the guys name who use to make them, recall he was in Oregon, and I am not sure if he still sells spinners.

I think the stock spinner is...
Forum: RV-4 10-11-2018, 04:33 PM
Replies: 4
Views: 1,148
Posted By gmcjetpilot
Had similar problem on my RV-4 and I took a...

Had similar problem on my RV-4 and I took a different less draggy approach. I put to VG's in front of the NACA scoop.
The two NACA inlets where in my canopy skirt on RHS. A combo of the Prop...
Forum: RV General Discussion/News 10-05-2018, 05:48 PM
Replies: 26
Views: 5,581
Posted By gmcjetpilot
Thank God you are OK.... Bird strike can take...

Thank God you are OK.... Bird strike can take pilot and plane out, civilian and military... If you want to race or do fast low flying a helmet with face shield I think is a must... I had an friend...
Forum: RV-6/6A 10-02-2018, 04:50 PM
Replies: 21
Views: 4,056
Posted By gmcjetpilot
You don't have a very good imagination... There...

You don't have a very good imagination... There is a sad case of a RV-8 about 19 years ago in the Oregon, massive fire, piloted try to descend, bailed out.... He did not have a chute. He decided he...
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