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Search: Posts Made By: gmcjetpilot
Forum: Electronic Ignition Systems Yesterday, 06:26 PM
Replies: 27
Views: 3,464
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: VAF Classifieds (posts in here deleted after 30 days) 11-15-2018, 07:55 PM
Replies: 7
Views: 422
Posted By gmcjetpilot
The THING... is with electronic ignition the...

The THING... is with electronic ignition the standard prop blades have vibration issues. You can stay out of that zone fairly easily. It has to do with a sharper power pulse with EI, which does not...
Forum: Electronic Ignition Systems 11-15-2018, 05:31 PM
Replies: 27
Views: 3,464
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: 71
Views: 10,475
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: 27
Views: 3,464
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: 27
Views: 3,464
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: 193
Views: 27,595
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: 23
Views: 2,060
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: 7
Views: 1,066
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: 30
Views: 13,399
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: 17,874
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: 12,667
Posted By gmcjetpilot
...any chance to update this list. It seems...

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

Cheers.
Forum: VAF Classifieds (posts in here deleted after 30 days) 11-12-2018, 06:46 PM
Replies: 7
Views: 422
Posted By gmcjetpilot
WTB: Hartzell Compact Hub Constant Speed BA Prop C2YR-1BFP/F7497 or F7492

WTB Hartzell CS prop for O-360.

Want "blended airfoil" or BA prop but
C2YR-1BFP/F7497 or F7492

will consider

HC-C2YK-1BF/F7666-2

Thanks
Forum: RV-10 11-10-2018, 12:23 AM
Replies: 22
Views: 4,184
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: VAF Classifieds (posts in here deleted after 30 days) 11-09-2018, 05:31 PM
Replies: 7
Views: 1,068
Posted By gmcjetpilot
Interested in ring gear, PM sent

Interested in ring gear, PM sent
Forum: RV-7/7A 11-08-2018, 05:29 PM
Replies: 12
Views: 1,222
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: 22
Views: 4,184
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: 22
Views: 4,184
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: 27
Views: 3,925
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: VAF Classifieds (posts in here deleted after 30 days) 11-01-2018, 08:43 PM
Replies: 0
Views: 264
Posted By gmcjetpilot
NOSE GEAR TIRE TUBES Cheng Shin 11-400-5 RV-6A/7A/8A/9A Tube 90 Stem

Check it out NOSE GEAR TUBE

Tube LAMB Cheng Shin 11X4.00x5 11-400-5 RV-6A/7A/8A/9A P/N TB100-040 90 Stem

Brand new in box $12 with free shipping. Don't replace those tires OLD TUBES.. Boooo. If...
Forum: Probable Cause Documents Discussed 10-31-2018, 01:23 AM
Replies: 7
Views: 1,066
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: 740
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: 1,282
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: 1,703
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: 1,009
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: 1,474
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: 1,703
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: 854
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: 854
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: 854
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: 921
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: 4,975
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: 22
Views: 3,604
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...
Forum: RV-6/6A 10-01-2018, 08:53 PM
Replies: 21
Views: 2,751
Posted By gmcjetpilot
One more thing about loops. When I was getting...

One more thing about loops. When I was getting some dual in a RV-4, we did a loop and I was told to try and get a stall buffet and recover at the top of the loop....

So inverted I increased back...
Forum: RV-6/6A 09-30-2018, 09:19 PM
Replies: 21
Views: 2,751
Posted By gmcjetpilot
I am not telling you HOW to do a loop. As...

I am not telling you HOW to do a loop. As luddite42 said, good advice, get some dual, understand before you start.

Second, there are things you should do and think of before looping your RV. You...
Forum: Electrical Systems 09-28-2018, 10:25 AM
Replies: 19
Views: 4,676
Posted By gmcjetpilot
I have researched this, even the larger pad...

I have researched this, even the larger pad mounted alternators do not make much more than 10 amps at idle. The weight savings is not that grea,t and there is a possible issue of shearing the spline...
Forum: RV General Discussion/News 09-27-2018, 07:24 PM
Replies: 17
Views: 1,812
Posted By gmcjetpilot
+1 CHANGE IT... it is not airworthy.

+1 CHANGE IT... it is not airworthy.
Forum: Electrical Systems 09-27-2018, 12:05 PM
Replies: 46
Views: 9,420
Posted By gmcjetpilot
Great Work Otis

The plenum you made to cool alternator rectifier shields it from radiant and convective heat under the cowl... With the blast tube you are as cool as it can be in this configuration, from what I see....
Forum: RV-7/7A 09-26-2018, 02:34 PM
Replies: 3
Views: 526
Posted By gmcjetpilot
Thanks for the replies... I am going to try and...

Thanks for the replies... I am going to try and resist the urge to make it more complicated (with electrical servo actuation) and just use a flex cable.... :)

There are servos all over cars for the...
Forum: RV-6/6A 09-25-2018, 07:05 PM
Replies: 52
Views: 11,779
Posted By gmcjetpilot
I wounder if your O320 is not making full power?...

I wounder if your O320 is not making full power?

You can have a metal fixed pitch prop re-pitched.

I would go through the engine and make sure compression (leak down) is good, Oil analysis is...
Forum: RV-7/7A 09-24-2018, 04:23 PM
Replies: 3
Views: 526
Posted By gmcjetpilot
Heat Box Questions

I am looking at the two cabin heat stainless versions, spot welded not assembled with aluminum hardware for my RV-7 (listed below).

Also what is the throw or travel to move the flap from closed to...
Forum: Alternative Engines 09-19-2018, 08:24 PM
Replies: 141
Views: 51,224
Posted By gmcjetpilot
Sorry to bump this thread since it involved loss...

Sorry to bump this thread since it involved loss of life. However there are
several broken links. NTSB report search for RV10 or RV 10 or RV-10 will
not find report. It was listed as "Trish's Ride...
Forum: RV-7/7A 09-19-2018, 11:49 AM
Replies: 5
Views: 607
Posted By gmcjetpilot
Thank you both. Got to say not a fan of the ball...

Thank you both. Got to say not a fan of the ball infiltrator idea in that thread, but clever. I was thinking something flush. However due to boundary layer flush AOA port may not work. Hope to find...
Forum: RV-6/6A 09-19-2018, 09:25 AM
Replies: 22
Views: 3,604
Posted By gmcjetpilot
Good advice and goes along with the seminar Allan...

Good advice and goes along with the seminar Allan Silver gives, emergency parachute use for sport pilots, if/when to get out is #1 decision.

I notice some videos on youtube of military training on...
Forum: RV-7/7A 09-18-2018, 09:32 PM
Replies: 9
Views: 1,554
Posted By gmcjetpilot
I put my twin dipole V under fuselage, under Horz...

I put my twin dipole V under fuselage, under Horz Stab, Fwd of tail wheel spring mount. I had a duplex'er so it was VOR, LOC and ILS. It was out of the way and worked very well.
Forum: RV-7/7A 09-18-2018, 09:30 PM
Replies: 5
Views: 607
Posted By gmcjetpilot
AOA Port in LEADING EDGE - Where to locate (or won't work)

I know this must have been figured out. I plan on using EFIS AOA (Dynon,
Garmin, GRT) but not a fan of the Pitot/AOA port in one.

These AOA's work (with out a vane) is comparing pressure of pitot...
Forum: RV-6/6A 09-17-2018, 04:47 PM
Replies: 22
Views: 3,604
Posted By gmcjetpilot
That would be embarrassing, well for only a short...

That would be embarrassing, well for only a short while. :eek:

Good advice. I add treat your chute like gold... DO NOT LEAVE IT sitting in the plane or hanger all the time like a pile of dirty...
Forum: RV-6/6A 09-17-2018, 02:48 PM
Replies: 22
Views: 3,604
Posted By gmcjetpilot
Slider can't be fully open in flight at speed....

Slider can't be fully open in flight at speed. You need removable forward pins on sliders. When we say bailout, we are taking round emergency chutes for glider/sport/aerobatic/warbird pilots, round...
Forum: RV Ongoing Maintenance Issues 09-10-2018, 08:46 PM
Replies: 14
Views: 1,739
Posted By gmcjetpilot
The Nitrogen is DRY and has no H2O or water vapor...

The Nitrogen is DRY and has no H2O or water vapor and changes pressure less with temperature change.

I called a tire manufacture and asked: WHY ARE TUBES were so expensive. The reason?

There are...
Forum: RV Ongoing Maintenance Issues 09-08-2018, 10:22 PM
Replies: 14
Views: 1,739
Posted By gmcjetpilot
If you are talking the nose gear you can buy tube...

If you are talking the nose gear you can buy tube for the "Lamb" Cheng Shin 11 X 400 X 5 tire. Those tubes are about $10 from Vans or Spruce.

If you mean main gear, Grainger has this tube close for...
Forum: RV Ongoing Maintenance Issues 09-07-2018, 06:03 PM
Replies: 14
Views: 1,739
Posted By gmcjetpilot
I am looking at buying new tires for my RV-7...

I am looking at buying new tires for my RV-7 project.

Glad to hear about Goodyear Flight Special II. They look good and are less than $97. Other tire I'm considering Specialty Tires "Air Trac"...
Forum: RV-7/7A 08-28-2018, 10:59 PM
Replies: 8
Views: 1,216
Posted By gmcjetpilot
Garmin in General is VERY proprietary.... not...

Garmin in General is VERY proprietary.... not only servos.
Forum: RV-7/7A 08-28-2018, 10:54 PM
Replies: 12
Views: 2,143
Posted By gmcjetpilot
Don't forget for light weight: fancy paint job,...

Don't forget for light weight: fancy paint job, fancy panel (IFR), fancy upholstery, night lighting.... Prop - wood fixed pitch is lightest. Engine- O-320 would yeild lightest weight.

Weight of TIP...
Forum: RV-4 08-28-2018, 10:43 PM
Replies: 12
Views: 1,354
Posted By gmcjetpilot
Good move upgrading conical and go dynafocal,...

Good move upgrading conical and go dynafocal, good .... I would only suggest conical if you had a wood fixed prop.
If you stick with conical get LORD mounts. They cost more but will be far superior...
Forum: Probable Cause Documents Discussed 08-27-2018, 10:10 PM
Replies: 11
Views: 7,497
Posted By gmcjetpilot
This makes me sad.... Flying low can be fun. From...

This makes me sad.... Flying low can be fun. From personal experience I only do it when I know the area, typically right over the runway, ie, low pass. It still has risks. Hitting a bird at 200 mph,...
Forum: RV General Discussion/News 08-26-2018, 12:05 AM
Replies: 34
Views: 5,029
Posted By gmcjetpilot
I am curious what is in the panel Flight...

I am curious what is in the panel Flight Instruments and Nav your RV9A has?

Of course to fly IFR you must have FAR required specific Flt Instruments (and have pitot
static currently certified for...
Forum: Traditional Aircraft Engines 08-24-2018, 04:05 PM
Replies: 6
Views: 971
Posted By gmcjetpilot
A fixed pitch O-320 converted to C/S requires new...

A fixed pitch O-320 converted to C/S requires new crank and adding governor to accessory case (rear). I doubt they had a front Gov pad and drive on a solid crank O-320 case. I could be wrong or this...
Forum: Traditional Aircraft Engines 08-24-2018, 03:34 PM
Replies: 6
Views: 971
Posted By gmcjetpilot
Yes! Yes!!! it has value... What is the...

Yes! Yes!!! it has value... What is the O-320-DASH WHAT? Does it have dynafocal mounts?

My RV-4 (sold :( ) had a O-320 150HP C/S Hartzell HC-F2YL Prop (extended hub). My RV-4 top speed 205 mph any...
Forum: Propellers 08-09-2018, 06:45 PM
Replies: 7
Views: 1,066
Posted By gmcjetpilot
I'm going to develop a constant speed prop for my...

I'm going to develop a constant speed prop for my RV-7. I am going to convert $8000 into a Hartzell blended air foil compact hub. :)

The question is over my head, but sounds like an interesting...
Forum: Glass Cockpit 08-07-2018, 01:09 AM
Replies: 17
Views: 1,185
Posted By gmcjetpilot
Keep building and don't waste too much time on...

Keep building and don't waste too much time on EFIS or avionics until you are really ready to build the panel. Delay buying as long as possible before making a decision. For sure things will change,...
Forum: Electrical Systems 08-07-2018, 12:43 AM
Replies: 161
Views: 38,013
Posted By gmcjetpilot
I had 900 hours in my RV-4 with off the shelf...

I had 900 hours in my RV-4 with off the shelf 35-40 amp ND, internally regulated, no issue before selling the plane.

Vibration and heat should be considered. Many folks should consider dynamic...
Forum: RV General Discussion/News 08-04-2018, 10:19 PM
Replies: 10
Views: 1,696
Posted By gmcjetpilot
Bill is that a NO to making more plenums? I have...

Bill is that a NO to making more plenums? I have RV-7 project, parallel valve 360 and equivalent of SJ short cowl. The latter difference long vs short I don't think is an issue. Are you willing to...
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