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Search: Posts Made By: gmcjetpilot
Forum: RV-7/7A Today, 09:37 AM
Replies: 93
Views: 8,158
Posted By gmcjetpilot
I see, should have been clear. So he has two...

I see, should have been clear. So he has two schematics.

The first is put his OV switch on the ON/OFF lead to the IR alternator. It may work fine, but don't like it. ;) I have seen people do this,...
Forum: RV-7/7A Today, 09:12 AM
Replies: 93
Views: 8,158
Posted By gmcjetpilot
Not all clones are the same. I found the ones...

Not all clones are the same. I found the ones from Taiwan were better than ones for China, but that was 10 years ago.

If you can get a new ND that is best, but most of the genuine Japan made small...
Forum: RV-7/7A Today, 08:30 AM
Replies: 93
Views: 8,158
Posted By gmcjetpilot
Good point, but these auto alternators are able...

Good point, but these auto alternators are able to run up to 9000 rpm all day, but logic would say it will live longer at 6000 RPM. With that said how many ND or ND clone alternators die because of...
Forum: RV General Discussion/News Today, 07:30 AM
Replies: 4
Views: 246
Posted By gmcjetpilot
What are the CHT's 1, 2, 3 and 4. Usually...

What are the CHT's 1, 2, 3 and 4. Usually cylinder #3 Back RHS (passenger side). The fins on the back side of the #3 cylinder are very shallow and your baffling can choke airflow. The trick here is...
Forum: RV-6/6A Yesterday, 01:43 PM
Replies: 60
Views: 14,217
Posted By gmcjetpilot
Do your top speed at full throttle and report...

Do your top speed at full throttle and report RPM, speed and total AC weight. Also report density altitude, and if able fly lower (safely), say 1000 feet agl. To get accurate speed do a GPS speed...
Forum: RV-6/6A Yesterday, 01:34 PM
Replies: 3
Views: 336
Posted By gmcjetpilot
So the filter (spin on I assume) is defective?...

So the filter (spin on I assume) is defective? :eek: Never seen that. Agree if that let loose.... You don't have to change the oil just the filter and replace the oil that was in the filter as...
Forum: RV-7/7A Yesterday, 12:38 PM
Replies: 23
Views: 2,603
Posted By gmcjetpilot
What new RV-7/A gear? This is just for RV-7A new...

What new RV-7/A gear? This is just for RV-7A new nose gear right? The RV-7/A confused me.

I hope the new nose gear works well..... Personally if I had an "A" model I would stick with the old mount...
Forum: Safety 11-13-2019, 04:57 PM
Replies: 48
Views: 9,228
Posted By gmcjetpilot
Thought same thing. I agree with you. A super...

Thought same thing. I agree with you. A super sized center punch on steroids is ideal. Great find. Kind of icky primary use. Reminds me of movie "No Country for Old Men". Let me know how it works......
Forum: RV General Discussion/News 11-13-2019, 12:15 PM
Replies: 21
Views: 2,211
Posted By gmcjetpilot
One issue is lumens and candela are some of the...

One issue is lumens and candela are some of the most obscure antique units of measurements in all if physics. As pointed out beam width and other factors are in play. It's hard to get a feel for the...
Forum: RV-7/7A 11-13-2019, 07:56 AM
Replies: 11
Views: 1,021
Posted By gmcjetpilot
+1. Facts will set you free. Over 10,500 RV's...

+1. Facts will set you free. Over 10,500 RV's flown over +40 years with a handful of in-flight break-ups going back to the RV-3 (wing issue), mostly attributed to exceeding Vne and G limits (a lot),...
Forum: RV General Discussion/News 11-13-2019, 07:34 AM
Replies: 3
Views: 489
Posted By gmcjetpilot
Some pictures of this custom plane with...

Some pictures of this custom plane with measurements would be great.

Do you plan on making the cowl out of metal?

If the inlet is what you want to modify you could make a fiberglass nose bowl and...
Forum: RV General Discussion/News 11-13-2019, 07:21 AM
Replies: 8
Views: 442
Posted By gmcjetpilot
[QUOTE=markgtruitt;1385852]All, I am flying of...

[QUOTE=markgtruitt;1385852]All, I am flying of the first 40 on my RV10 and would like to know what I should note in the "Description of Inspections, at different weights up to max gross (Vo, V1,...
Forum: RV General Discussion/News 11-11-2019, 11:40 AM
Replies: 15
Views: 1,460
Posted By gmcjetpilot
I went with electronic copy only. I will let it...

I went with electronic copy only. I will let it run for a year or two and end my subscription. I go a few years and pick it up again. The good thing is you can see back issues. The only magazine I...
Forum: Safety 11-10-2019, 06:51 PM
Replies: 14
Views: 2,095
Posted By gmcjetpilot
Thanks I missed the night part. I like how you...

Thanks I missed the night part. I like how you told me. Ha ha. Not sure what right turn in high wing has to do with it, if you have horizon in your windscreen. If the wing blocks the only reference...
Forum: Safety 11-09-2019, 06:22 PM
Replies: 14
Views: 2,095
Posted By gmcjetpilot
Sorry for the loss of your friend and condolences...

Sorry for the loss of your friend and condolences to all friends and family.

Last part of report is odd, illogical.... This was a clear day... with light winds and they just put this at the end of...
Forum: RV General Discussion/News 11-09-2019, 06:02 PM
Replies: 20
Views: 1,977
Posted By gmcjetpilot
+1 ding ding ding winner winner chicken...

+1 ding ding ding winner winner chicken dinner.

If you have fat radius on the training edge edge of aileron, it can create weird control issues and heavy wing or rolling. Before squeezing the...
Forum: RV-6/6A 11-08-2019, 04:30 PM
Replies: 46
Views: 5,140
Posted By gmcjetpilot
Thanks, fair enough... forgot about lower...

Thanks, fair enough... forgot about lower aerobatic weight. So 1375 to 1800 is about 30%. So at 1800 lbs you would be around 3.8G limit of utility category plane.

To be clear I'm not condoning or...
Forum: RV-6/6A 11-08-2019, 03:38 PM
Replies: 46
Views: 5,140
Posted By gmcjetpilot
I do stress analysis and certification of...

I do stress analysis and certification of aircraft structure. Not going to argue MGW (max gross wt.) but a few comments.

Gust load condition will produce higher G loads when operating an aircraft at...
Forum: RV General Discussion/News 11-08-2019, 01:58 PM
Replies: 27
Views: 2,624
Posted By gmcjetpilot
Nice land and home strip plans. I'm jealous. That...

Nice land and home strip plans. I'm jealous. That is a long Pvt strip. RV's need much less than that, even with obstacles. As far as drainage if willing to move dirt and add drainage you can put...
Forum: RV-7/7A 11-03-2019, 02:40 PM
Replies: 11
Views: 1,021
Posted By gmcjetpilot
Call Van's Aircraft Monday is my...

Call Van's Aircraft Monday is my advice/suggestion. My opinion is you might not get an answer for one or more reasons..... like no one has tried it or it will not fit.... You will be the trail blazer...
Forum: RV-7/7A 11-03-2019, 12:37 PM
Replies: 14
Views: 1,827
Posted By gmcjetpilot
I have never had an in-flight RV fire but read...

I have never had an in-flight RV fire but read the accident reports of a few. The stainless steel "Firewall" is not the weak point. The fiberglass cowl will fail, allowing heat and smoke to impinge...
Forum: RV-7/7A 11-02-2019, 08:02 PM
Replies: 93
Views: 8,158
Posted By gmcjetpilot
Scary. $40K. Nice panel. What did he blow? I ask...

Scary. $40K. Nice panel. What did he blow? I ask because most modern avionics runs on 10 to 30 volts and they have their own OV protection. Old school avionics were virtually unprotected... power...
Forum: RV-7/7A 11-02-2019, 07:56 PM
Replies: 11
Views: 1,021
Posted By gmcjetpilot
You are over thinking it. I built two RV-7 the...

You are over thinking it. I built two RV-7 the very first early small one and the larger one. RV-7 rudder is fine in my opinion. Talk to Van's.
Forum: RV General Discussion/News 11-02-2019, 04:46 PM
Replies: 50
Views: 8,833
Posted By gmcjetpilot
Good summary. Designer Dennis Polen passed in...

Good summary. Designer Dennis Polen passed in 2008: http://www.vansairforce.com/community/showthread.php?t=27431

This is what we are talking about for those who did not google...
Forum: RV General Discussion/News 11-02-2019, 07:40 AM
Replies: 50
Views: 8,833
Posted By gmcjetpilot
Yep you are right. I bought and built a RV-6 kit...

Yep you are right. I bought and built a RV-6 kit in late 80's (drill your own holes). I finished and owned a RV-4 and currently a RV-7. The RV-6 did not come with rudder counter balanced. I got...
Forum: RV General Discussion/News 11-01-2019, 06:43 AM
Replies: 50
Views: 8,833
Posted By gmcjetpilot
That was a one off built by a corporate pilot I...

That was a one off built by a corporate pilot I recall. It was sold and never heard of it again. Do you know where it is? I would love to see it in person. Remember seeing it magazines way back when.
Forum: RV General Discussion/News 11-01-2019, 06:38 AM
Replies: 50
Views: 8,833
Posted By gmcjetpilot
For starters? I have a long list of...

For starters? I have a long list of modifications, and you mention two, one of which I mentioned. :D Not an expert but I got the big stuff.

Yes RV-4's don't have counter balanced rudders, but...
Forum: RV General Discussion/News 10-31-2019, 07:42 PM
Replies: 50
Views: 8,833
Posted By gmcjetpilot
What do you mean by stock. I am no Dave Anders...

What do you mean by stock. I am no Dave Anders expert but met him once and followed all his work for a long time. First the plane is impeccably built. Air frame has custom cowl, cowl inlets,...
Forum: RV General Discussion/News 10-31-2019, 07:33 PM
Replies: 50
Views: 8,833
Posted By gmcjetpilot
Useful load or max gross is what ever you (the...

Useful load or max gross is what ever you (the builder) calls it... Experimental. Not saying that is OK, just I have seen arbitrary increase in weights before. These are no longer RV's due to the...
Forum: RV General Discussion/News 10-31-2019, 09:47 AM
Replies: 6
Views: 2,166
Posted By gmcjetpilot
Condolences to friends and family. They found...

Condolences to friends and family.

They found the accident site in part by a Find My iPhone App, interesting.
Kathryn's report is pretty amazing how they collect from many sources.
I flew in North...
Forum: Safety 10-28-2019, 11:41 AM
Replies: 48
Views: 9,228
Posted By gmcjetpilot
Tip up from pictures on web, unless he converted...

Tip up from pictures on web, unless he converted it.
Forum: Safety 10-28-2019, 11:37 AM
Replies: 48
Views: 9,228
Posted By gmcjetpilot
Like it. I have pliers to open up hole after hole...

Like it. I have pliers to open up hole after hole is open.... but I really like your design.... excellent. "Bayou" I see you are from Louisiana.... cool.
Forum: RV General Discussion/News 10-28-2019, 08:20 AM
Replies: 14
Views: 1,277
Posted By gmcjetpilot
Ditto, you can use your existing Com antenna if...

Ditto, you can use your existing Com antenna if you have a break you can access, remove from the panel mount radio to handheld. You could rely on rubber ducky antenna for limited range. NORDO just...
Forum: RV General Discussion/News 10-28-2019, 08:13 AM
Replies: 3
Views: 489
Posted By gmcjetpilot
Which one? RV-3 or Midget Mustang? I am trying to...

Which one? RV-3 or Midget Mustang? I am trying to envision my old RV-4 plans I don't have anymore. I don't recall the plans having detailed measurements, cross sections, you could build a cowl from....
Forum: RV General Discussion/News 10-22-2019, 06:46 PM
Replies: 10
Views: 717
Posted By gmcjetpilot
I'm an internet expert and know internally...

I'm an internet expert and know internally regulated alternators (read pet subject for which I have opinions, some of which are right).

First you have I assume a ND clone. Not slim clones or...
Forum: RV General Discussion/News 10-22-2019, 06:45 PM
Replies: 10
Views: 717
Posted By gmcjetpilot
Duplicate post

Duplicate post
Forum: RV General Discussion/News 10-21-2019, 08:00 PM
Replies: 6
Views: 659
Posted By gmcjetpilot
Google is your friend. Not a lot of O-200's...

Google is your friend. Not a lot of O-200's around here.

I saw this one. The first reply seems way over the top... but search the thread and google... If you search VAF Forum there are several...
Forum: RV General Discussion/News 10-16-2019, 12:59 PM
Replies: 44
Views: 5,368
Posted By gmcjetpilot
Make sure to strain relieve. Wires hanging off...

Make sure to strain relieve. Wires hanging off connectors, wires vibrating, chaffing on structure can cause failures. Make sure you have service slack, no wires pulled tight. Have fun tracking and...
Forum: RV General Discussion/News 10-16-2019, 12:29 PM
Replies: 10
Views: 1,305
Posted By gmcjetpilot
Jeff to be blunt get the kit and build it. Worry...

Jeff to be blunt get the kit and build it. Worry about the panel later. You are a few years away from buying a panel. Also avionics will change between now and then. They are getting more integrated...
Forum: RV General Discussion/News 10-14-2019, 02:41 PM
Replies: 37
Views: 5,827
Posted By gmcjetpilot
What ever you do don't accidentally eject your...

What ever you do don't accidentally eject your canopy, unless you plan on bailing out... it could take off the vertical.
Forum: Propellers 10-14-2019, 01:33 PM
Replies: 24
Views: 2,591
Posted By gmcjetpilot
I just can't picture the mechanism. I know it has...

I just can't picture the mechanism. I know it has been done. The old Navions had a diaphragm behind the prop and it expanded and contracted moving mechanism to move the blades. It was variable pitch...
Forum: RV General Discussion/News 10-14-2019, 01:21 PM
Replies: 44
Views: 5,368
Posted By gmcjetpilot
At least it looks like you used aircraft wire and...

At least it looks like you used aircraft wire and have some labeled. The OP has a rat nest, automotive wire, no labels and likely no wiring diagram. If I would have done a pre-purchase inspection I...
Forum: RV-7/7A 10-14-2019, 01:11 PM
Replies: 93
Views: 8,158
Posted By gmcjetpilot
Keep in mind not all ring gear pulleys are same...

Keep in mind not all ring gear pulleys are same diameter.
Forum: Alternative Engines 10-11-2019, 12:02 PM
Replies: 79
Views: 7,271
Posted By gmcjetpilot
Good luck. Keep us informed on your progress....

Good luck. Keep us informed on your progress. However a scratched built 200HP radial for $14,000 is an aggressive goal. The Verner 9s uses magnesium and titanium to keep weight down and is a bargan...
Forum: Propellers 10-11-2019, 09:45 AM
Replies: 24
Views: 2,591
Posted By gmcjetpilot
Well I dare say almost everything under the sun...

Well I dare say almost everything under the sun has been tried with props, but maybe you have a better idea. However the standard is hydraulically controlled "constant speed" prop with a prop...
Forum: Alternative Engines 10-09-2019, 06:22 AM
Replies: 79
Views: 7,271
Posted By gmcjetpilot
Cool custom replica. Get building. Verner 9S is...

Cool custom replica. Get building. Verner 9S is new... cool radal, 158HP and $27,000, and far better than the rotec in my opinion... The Samson replica is based on a Pitts S1. It's a serious project...
Forum: Alternative Engines 10-08-2019, 12:04 PM
Replies: 79
Views: 7,271
Posted By gmcjetpilot
There are a few Radials on the market. The East...

There are a few Radials on the market.

The East Europe M14 is a bit of a monster (too much for RV's) at 360HP. You can buy them new but expensive. Engine from Czechoslovakia...
Forum: RV General Discussion/News 10-07-2019, 12:06 PM
Replies: 13
Views: 1,309
Posted By gmcjetpilot
Steps are a good idea. For passengers I carry a...

Steps are a good idea. For passengers I carry a small folding step stool....
Forum: RV General Discussion/News 10-03-2019, 07:42 PM
Replies: 36
Views: 2,985
Posted By gmcjetpilot
100% spot on. I agree. However it shows...

100% spot on. I agree. However it shows systematic approach and methodology in making changes and measuring results. It is an old book and not everything he did worked or would I consider. However...
Forum: RV General Discussion/News 10-03-2019, 10:16 AM
Replies: 36
Views: 2,985
Posted By gmcjetpilot
Pitot angle to free air-stream (normal flight...

Pitot angle to free air-stream (normal flight regimes) has little effect on the accuracy of airspeed. The static port is however much more effected and where the AS error comes. The static port on...
Forum: Safety 10-02-2019, 12:38 PM
Replies: 5
Views: 864
Posted By gmcjetpilot
This goes way back... Richard Vangrunsven had a...

This goes way back... Richard Vangrunsven had a fly off/dogfight in the RV-6 which was out only a short time, against a Bushby Mustang II (very similar to RV-6). Outcome of said dogfight was...
Forum: RV General Discussion/News 10-02-2019, 09:51 AM
Replies: 36
Views: 2,985
Posted By gmcjetpilot
I get it, this is a looks thing. You are not too...

I get it, this is a looks thing. You are not too concerned about efficiency.

This is what you want:
https://www.jamesaircraft.com/products/air-filter-kits/

You want the FI no bottom hump look? Sam...
Forum: Safety 09-30-2019, 12:45 PM
Replies: 5
Views: 864
Posted By gmcjetpilot
Buckle Up For Safety

This sad bizarre accident points out the importance of securing your seat belt harness.

CEN11FA634 09/07/2011 Winfield, KS United States N554JR RIFFEL JERRIS L RV-7A 1 VMC ...
Forum: RV General Discussion/News 09-30-2019, 12:17 PM
Replies: 12
Views: 1,222
Posted By gmcjetpilot
I did the split. My lower seal ( red silicone) ...

I did the split.

My lower seal ( red silicone) wrapped around sides and bottom one peice of the cowl inlet plenum . So as you slid lower cowl up it cradled the FAB.

The top piece of seal (red...
Forum: RV General Discussion/News 09-28-2019, 03:38 PM
Replies: 9
Views: 431
Posted By gmcjetpilot
I vote for governor adjustment. The max RPM...

I vote for governor adjustment. The max RPM setting is off, rigging of your control may not be moving lever to full low pitch max RPM.

Is the performance basically the same.... take off run, climb...
Forum: RV General Discussion/News 09-28-2019, 03:01 PM
Replies: 36
Views: 2,985
Posted By gmcjetpilot
So this is for the carb or FI from the bottom of...

So this is for the carb or FI from the bottom of the engine I assume.... Are you planning on making your own?

I will give you my very opinionated biased suggestion. Van's FAB (air-box) and scoop...
Forum: RV General Discussion/News 09-27-2019, 02:25 PM
Replies: 11
Views: 905
Posted By gmcjetpilot
Hi Brett: Welcome aboard. I think your idea of...

Hi Brett: Welcome aboard. I think your idea of factory visit is great. What kind of flight experience do you have? Have you owned an airplane before? Have a hanger? Are you a DIY'er? Buying any...
Forum: RV General Discussion/News 09-27-2019, 12:45 PM
Replies: 45
Views: 8,101
Posted By gmcjetpilot
For the record I did not say this guarantees...

For the record I did not say this guarantees flutter prevention, but it helps, nor did I say or imply to exceed the operating limits. I think that is a given every pilot should know.. ... Thanks. ...
Forum: RV General Discussion/News 09-27-2019, 10:17 AM
Replies: 45
Views: 8,101
Posted By gmcjetpilot
BillL do you have a list or the accident...

BillL do you have a list or the accident references. That sounds like a lot. I heard of one HS failure... (turbulence and high speed may have been factors) Appreciate it.

BTW: RV-7 completed in...
Forum: RV General Discussion/News 09-25-2019, 12:05 PM
Replies: 3
Views: 666
Posted By gmcjetpilot
Get the LORD mounts. They cost more but are worth...

Get the LORD mounts. They cost more but are worth it. The ones I am thinking of have the silicon (gel) inner sleeve. The other brands can't compare.

If you have a leaky one you can call LORD and...
Forum: RV General Discussion/News 09-24-2019, 12:51 PM
Replies: 1
Views: 350
Posted By gmcjetpilot
Yep use metallic SS tape or other heat shield....

Yep use metallic SS tape or other heat shield. The min clearance is what you end up with. There is no rule. The more space the better for your cowl. I think 1" clearance is fine but it depends on how...
Forum: RV General Discussion/News 09-24-2019, 12:31 PM
Replies: 12
Views: 2,823
Posted By gmcjetpilot
The detective work by team VAF is excellent. 1)...

The detective work by team VAF is excellent. 1) So glad there were no fatalities; 2) Looking at the picture it's amazing there were no fatalities.
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