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Search: Posts Made By: brad walton
Forum: Electronic Ignition Systems 07-22-2018, 06:50 PM
Replies: 68
Views: 5,657
Posted By brad walton
Numbers with mags

My numbers with mags aren't as good as Dave Anders, but whose are? But my Superior io360 Catto 3 blade equipped RV8 does pretty well at altitude. How about 178 ktas at 15,950 da burning 7.77 gph. Or...
Forum: RV-10 05-28-2018, 06:56 AM
Replies: 42
Views: 3,302
Posted By brad walton
Many years ago (1980's) a sailplane pilot placed...

Many years ago (1980's) a sailplane pilot placed a lead weight behind his seat in a baggage area. A poor landing and the lead came forward and broke his neck killing the pilot. Unsecured or...
Forum: RV General Discussion/News 05-20-2018, 02:56 PM
Replies: 6
Views: 800
Posted By brad walton
The correlation I notice is that with a fixed...

The correlation I notice is that with a fixed pitch prop I get the same true airspeed at the same RPMs regardless of altitude. But the fuel burn goes down with altitude.
Forum: Painting your RV 02-15-2018, 06:04 PM
Replies: 3
Views: 619
Posted By brad walton
I've tried in the past and the new paint lifted...

I've tried in the past and the new paint lifted the old paint where it overlapped.
Forum: Painting your RV 02-15-2018, 10:34 AM
Replies: 3
Views: 619
Posted By brad walton
Best way to touch up paint

I painted my RV 8 with single stage urethane, DuPont Imron. It is not base coat clear coat. Looking on line, most of the touch up paint is lacquer or acrylic lacquer paint that requires a base coat...
Forum: Traditional Aircraft Engines 02-14-2018, 07:35 PM
Replies: 8
Views: 1,787
Posted By brad walton
I had an exhaust valve that was sticking...

I had an exhaust valve that was sticking intermittently that exhibited these symptoms. Usually compression would close the valve. But occasionally it would fail to fully close.
Forum: RV General Discussion/News 02-09-2018, 08:58 PM
Replies: 22
Views: 2,562
Posted By brad walton
The CAFE Foundation published 3 studies on...

The CAFE Foundation published 3 studies on electronic ignition performance compared to magnetos. Search "CAFE Foundation and electronic ignition" and links to the publications readily come up. At all...
Forum: RV General Discussion/News 02-09-2018, 07:01 AM
Replies: 22
Views: 2,562
Posted By brad walton
Whenever this subject comes up, the pro...

Whenever this subject comes up, the pro electronic ignition people claim better performance, reliability and fuel savings.
I can believe advanced timing allows running further lean of peak than fixed...
Forum: RV General Discussion/News 01-17-2018, 02:46 PM
Replies: 11
Views: 2,032
Posted By brad walton
I would worry more about my own safety than that...

I would worry more about my own safety than that of the plane. I have friends from Mexico who no longer go home for Christmas because of their fear for their safety in their home country
Forum: RV General Discussion/News 01-17-2018, 02:39 PM
Replies: 12
Views: 935
Posted By brad walton
The carb float turns fuel flow on and off. As the...

The carb float turns fuel flow on and off. As the float bowl fuel level goes down, the float opens a valve and refills the float bowl. This may be what you are seeing
Forum: Acts of Charity (using your RV) 01-15-2018, 03:53 PM
Replies: 13
Views: 3,012
Posted By brad walton
I take out the rear stick and remove the rear...

I take out the rear stick and remove the rear seat back. I can get a 25 lb crate half in baggage area and half on rear seat. I do use the seat belt and shoulder harness to secure the crate and it...
Forum: RV-10 01-11-2018, 09:44 AM
Replies: 17
Views: 1,176
Posted By brad walton
If you add a servo inside the rudder, you may be...

If you add a servo inside the rudder, you may be changing its flutter speed. I have no rudder trim on my RV8. The need for trim and in which direction change with speed and whether you are in climb...
Forum: Glass Cockpit 12-20-2017, 08:37 AM
Replies: 37
Views: 5,833
Posted By brad walton
MGL was my choice 7 years ago. I have the legacy...

MGL was my choice 7 years ago. I have the legacy Odyssey 10 inch EFIS. It has served me well and has great features and adaptability.
Forum: RV-8/8A 12-19-2017, 02:07 PM
Replies: 27
Views: 6,311
Posted By brad walton
From what has been said over the years on this...

From what has been said over the years on this site, you can't go wrong with any of the 4 you named. I have a Superior io360 on my RV8 with 9:1 pistons rated at 185HP turning a Catto 3 blade. I am...
Forum: RV-9/9A 12-14-2017, 05:55 PM
Replies: 17
Views: 2,756
Posted By brad walton
Originally saw the manifold pressure plus rpm...

Originally saw the manifold pressure plus rpm formula from the RVator. But I doubt its accuracy. I can run 24/24 at low altitude burning 9 gph. I don't think I'm getting 75% power at less than 10.5...
Forum: Electrical Systems 12-10-2017, 03:13 PM
Replies: 1
Views: 503
Posted By brad walton
I installed one on my RV8. I originally put in...

I installed one on my RV8. I originally put in the Duckworth light in the last bay of the right wing. Before the 1st flight I modified it to take the Kuntsleman led light. I also use the Kuntsleman...
Forum: RV-9/9A 12-06-2017, 08:44 AM
Replies: 29
Views: 7,421
Posted By brad walton
I'm sure I'll be corrected if I'm wrong, but my...

I'm sure I'll be corrected if I'm wrong, but my recollection is that Vy equals best glide ratio and Vx equals minimum sink speed as well as being best angle and rate of climb speeds respectively.
Forum: RV-8/8A 11-23-2017, 09:36 AM
Replies: 25
Views: 5,343
Posted By brad walton
David, I've enjoyed your RV8 related posts over...

David, I've enjoyed your RV8 related posts over the years. I will make a similar decision about my 8 in the future. I'm always watching for the signs that it is time.
I look forward to your RV12...
Forum: RV General Discussion/News 11-10-2017, 08:08 AM
Replies: 48
Views: 4,930
Posted By brad walton
Bob Turner and RV8JD, you are correct regarding...

Bob Turner and RV8JD, you are correct regarding IAS. I overstated what I always use. Good reminder that straight and level stall occurs at about the same IAS as altitude increases
Forum: RV General Discussion/News 11-09-2017, 06:49 PM
Replies: 48
Views: 4,930
Posted By brad walton
Density altitude has to be very high, maybe...

Density altitude has to be very high, maybe Leadville Co., for TAS and indicated to diverge very much at low speeds like approuch speeds. Besides, by the time on on short final I'm flying by feel...
Forum: RV General Discussion/News 11-09-2017, 05:58 PM
Replies: 48
Views: 4,930
Posted By brad walton
My EFIS displays TAS. True air speed and ground...

My EFIS displays TAS. True air speed and ground speed are the only speed numbers I consider while flying
Forum: Glass Cockpit 11-07-2017, 04:52 AM
Replies: 24
Views: 2,450
Posted By brad walton
Not many opinions from people that have had both....

Not many opinions from people that have had both. Most people justify their decision by saying the manufacturer they chose is the best. One of the people who has answered the op's original question...
Forum: RV-14 09-30-2017, 02:10 PM
Replies: 11
Views: 2,111
Posted By brad walton
After reading this post and living with a 1/16 th...

After reading this post and living with a 1/16 th inch play at the trailing edge for a long time, I fabricated a clevis pin with no play. Flew today for the first time since making the modification...
Forum: RV-14 09-24-2017, 06:08 PM
Replies: 11
Views: 2,111
Posted By brad walton
When you say 0.5 mm play, is that at the trailing...

When you say 0.5 mm play, is that at the trailing edge? I had about a 1/16 inch play at the trailing edge after 390 hours. I found the trim tab hole was about 3 one thousands inch larger than the...
Forum: RV General Discussion/News 09-19-2017, 12:57 PM
Replies: 34
Views: 4,599
Posted By brad walton
I just went back to "Section 2 Design Philosophy"...

I just went back to "Section 2 Design Philosophy" from my construction manual dated 4/23/96. It states in part:
"We feel that an RV in its basic form with fixed pitch prop, modest instrumentation...
Forum: RV General Discussion/News 09-17-2017, 05:09 PM
Replies: 22
Views: 3,412
Posted By brad walton
Mine is off a half ball to the right in cruise...

Mine is off a half ball to the right in cruise configuration. In climb more, and in descent it requires left rudder. So in cruise, I maintain a little right rudder pressure. No problem. And if I...
Forum: RV General Discussion/News 09-01-2017, 01:18 PM
Replies: 22
Views: 3,857
Posted By brad walton
I question whether everyone has the same thing in...

I question whether everyone has the same thing in mind as they answer the OP's inquiry. Are we talking total runway used or total ground roll after wheels touch? If you nail a three point landing...
Forum: RV-6/6A 09-01-2017, 12:57 PM
Replies: 9
Views: 1,180
Posted By brad walton
At some point in the last century they concluded...

At some point in the last century they concluded a slot might lower th risk of ripping the inboard tank bulkhead out in an accident resulting in the wings being folded back, thus less fuel spilled...
Forum: RV-10 08-21-2017, 09:18 AM
Replies: 17
Views: 1,465
Posted By brad walton
White is cooler temperature wise. Also some of...

White is cooler temperature wise. Also some of the more colorful/creative paint jobs look dated in five years.
I like Lynn's idea of paint white and add graphics
Forum: RV-7/7A 08-19-2017, 06:15 PM
Replies: 22
Views: 3,158
Posted By brad walton
I used a Cannon connector. Nice clean and solid....

I used a Cannon connector. Nice clean and solid. But in retrospect Tom Martin's suggestion looks like a good solution if/when the wings come off. Mine have never been off since final assembly.
Forum: Safety 08-15-2017, 07:20 AM
Replies: 61
Views: 11,753
Posted By brad walton
A dab of RTV was recommended in the trailing edge...

A dab of RTV was recommended in the trailing edge at the end of each stiffener in my plans in 1998.
Forum: RV Building Tips/Techniques 08-12-2017, 11:28 AM
Replies: 26
Views: 4,873
Posted By brad walton
I would not reject an entire airplane based on...

I would not reject an entire airplane based on this single photo. Seems harsh to me
Forum: RV-14 08-04-2017, 07:43 AM
Replies: 43
Views: 11,335
Posted By brad walton
I have two impulse coupled Slick mags on my io360...

I have two impulse coupled Slick mags on my io360 that were covered by the SB. It cost me $250 to have them both rebuilt by a reputable A&P. So cost should not be a conversion driver in my...
Forum: RV General Discussion/News 08-01-2017, 06:12 PM
Replies: 12
Views: 1,140
Posted By brad walton
At TS07 we have Bermuda with irrigation and its...

At TS07 we have Bermuda with irrigation and its one inch or less. Occasional weeds may be taller. Find your local golf course greens keeper and talk to him about type of grass and maintenance...
Forum: RV General Discussion/News 08-01-2017, 07:11 AM
Replies: 17
Views: 1,768
Posted By brad walton
Just had the same problem and fixed it. I also...

Just had the same problem and fixed it. I also have a Superior io360 and the pressure transducer is mounted on a Vans supplied manifold on the firewall. Researched the problem on my EFIS...
Forum: Traditional Aircraft Engines 07-25-2017, 08:12 PM
Replies: 7
Views: 1,390
Posted By brad walton
Catto constant speed prop? Please elaborate

Catto constant speed prop? Please elaborate
Forum: RV-8/8A 07-22-2017, 06:39 AM
Replies: 2
Views: 762
Posted By brad walton
After 365 hours, I just replaced the nuts, bolts...

After 365 hours, I just replaced the nuts, bolts and washers on my aileron brackets due to corrosion which made them look bad, but probably still safe. My brackets are protected by Imron paint and...
Forum: RV-8/8A 07-01-2017, 10:30 AM
Replies: 3
Views: 1,196
Posted By brad walton
Not an uncommon problem in the RV8. Most theorize...

Not an uncommon problem in the RV8. Most theorize the exhaust pulse fatigues the skin on the exhaust ramp. Vetterman exhaust sells downward facing exhaust pipe tips. There are several solutions for...
Forum: RV-4 07-01-2017, 05:54 AM
Replies: 11
Views: 1,439
Posted By brad walton
Don't forget about back seat air that comes up in...

Don't forget about back seat air that comes up in this area also
Forum: RV General Discussion/News 06-28-2017, 08:09 AM
Replies: 9
Views: 1,268
Posted By brad walton
Helllo Harvey. If WFO means what I think it does,...

Helllo Harvey. If WFO means what I think it does, at low altitudes I can spin it up to 2850 rpm and get low 190's ktas. I don't do that often because fuel burn is huge. Cool weather and light, I...
Forum: RV General Discussion/News 06-27-2017, 08:37 AM
Replies: 9
Views: 1,268
Posted By brad walton
I told Craig I wanted Van's numbers, 178 ktas at...

I told Craig I wanted Van's numbers, 178 ktas at 75% power at 8000 ft. density altitude. This is exactly what he gave me. People think " well I want a cruise prop so I'll get a prop with an inch or...
Forum: RV-12 06-22-2017, 07:09 AM
Replies: 18
Views: 4,542
Posted By brad walton
Contrary opinion

I have burgundy colored leather in my RV8 over Vans foam. I heard all kinds of stories about hot and too soft in the summer and cold and too hard in the winter. Neither were true. No problem with a...
Forum: Glass Cockpit 06-20-2017, 07:24 PM
Replies: 8
Views: 1,789
Posted By brad walton
Larry, give Matt at MGL a call and he will be...

Larry, give Matt at MGL a call and he will be able to get you set up with the radio. The vogad function causes some problems if not set up correctly. I have the V10 radio, very similar to the V6, and...
Forum: RV General Discussion/News 06-15-2017, 09:07 AM
Replies: 22
Views: 7,940
Posted By brad walton
I don't see any tail wheel fairing on Flyboy...

I don't see any tail wheel fairing on Flyboy Accessories web site. Am I missing something?
Forum: RV-8/8A 06-13-2017, 05:36 PM
Replies: 12
Views: 3,482
Posted By brad walton
I bought the SB repair kit but have yet to...

I bought the SB repair kit but have yet to install it on my 380 hour RV 8. I'm not looking forward to disassembling painted parts. So I watch it carefully. But if i was at your stage of construction,...
Forum: RV-6/6A 06-11-2017, 11:07 AM
Replies: 6
Views: 1,052
Posted By brad walton
Ive noticed higher CHT at altitude even as fuel...

Ive noticed higher CHT at altitude even as fuel flow for same speed decreases. I assumed this is a result of less airflow over cylinder heads due to less air density.
Forum: Traditional Aircraft Engines 06-04-2017, 06:24 AM
Replies: 40
Views: 6,596
Posted By brad walton
Great information Andrew and welcome to VAF

Great information Andrew and welcome to VAF
Forum: Traditional Aircraft Engines 06-02-2017, 12:29 PM
Replies: 40
Views: 6,596
Posted By brad walton
My understanding of the "cooling" effect of a...

My understanding of the "cooling" effect of a rich mixture is that the speed of the flame front is slowed by the rich mixture as heat is absorbed by the greater number of fuel droplet to be...
Forum: Propellers 06-02-2017, 11:44 AM
Replies: 15
Views: 1,748
Posted By brad walton
I am not questioning your numbers. But I don't...

I am not questioning your numbers. But I don't understand them. If both get the same speed at the same density altitude, I don't understand the difference in fuel burn. It would seem that same speed...
Forum: Traditional Aircraft Engines 06-02-2017, 07:02 AM
Replies: 40
Views: 6,596
Posted By brad walton
Greg, please expand on your point that...

Greg, please expand on your point that temperature of combustion is lowered
Forum: RV-8/8A 05-31-2017, 09:37 AM
Replies: 25
Views: 4,271
Posted By brad walton
When sailplanes race, they often carry water so...

When sailplanes race, they often carry water so that they go down their glide slope faster. They can jettison the water if the lift gets weak or cool off the crowd at the finish line.
If you...
Forum: RV-8/8A 05-30-2017, 07:32 PM
Replies: 15
Views: 2,548
Posted By brad walton
Way to go Steve! Best plane there is. You'll...

Way to go Steve! Best plane there is. You'll love it.
Forum: RV-8/8A 05-30-2017, 07:29 PM
Replies: 25
Views: 4,271
Posted By brad walton
The only way to know what your glide ratio really...

The only way to know what your glide ratio really is, is to turn off the fan. In a real engine out situation the prop will probably continue to turn unless the engine seizes up or you slow enough to...
Forum: Traditional Aircraft Engines 05-30-2017, 01:10 PM
Replies: 33
Views: 5,265
Posted By brad walton
I've got my GAMI spread pretty close. Previously,...

I've got my GAMI spread pretty close. Previously, I was able to get the spread to near zero at a fuel flow of 8 gph (fixed pitch). But at higher power settings, one cylinder was too lean. After...
Forum: RV General Discussion/News 05-27-2017, 07:00 AM
Replies: 17
Views: 3,097
Posted By brad walton
The factory marks are stamped so as not to create...

The factory marks are stamped so as not to create a stress riser. Filing and cutting with a tube cutter will create stress risers on an engine part that surely vibrates as it is supported on one end...
Forum: RV General Discussion/News 05-26-2017, 02:46 PM
Replies: 26
Views: 4,801
Posted By brad walton
If the price is right, perhaps a purchase subject...

If the price is right, perhaps a purchase subject to obtaining an airworthiness certificate
Forum: RV General Discussion/News 05-19-2017, 06:45 PM
Replies: 23
Views: 3,985
Posted By brad walton
Wrote about it in another post recently. I had...

Wrote about it in another post recently. I had the same or similar happen. If its the single pole sensor, they ground through the manifold it is screwed into which is grounded to the firewall and...
Forum: Traditional Aircraft Engines 05-17-2017, 06:28 AM
Replies: 5
Views: 950
Posted By brad walton
I'm with Kevin Phelps on this one. I just went...

I'm with Kevin Phelps on this one. I just went through the same issue. Looked at my EFIS manufacturer's website to order new sender thinking that was the problem. They had a writeup about bad ground...
Forum: Electrical Systems 05-13-2017, 07:42 PM
Replies: 11
Views: 2,344
Posted By brad walton
I dont claim expertise in electrical issues, but...

I dont claim expertise in electrical issues, but in my opinion, there should be no exposed hot terminals
Forum: RV General Discussion/News 05-13-2017, 05:40 AM
Replies: 158
Views: 84,528
Posted By brad walton
Ref the funnel cloud: To a sail plane pilot,...

Ref the funnel cloud: To a sail plane pilot, that looks like good lift!
Forum: RV-12 05-11-2017, 08:41 AM
Replies: 82
Views: 23,616
Posted By brad walton
I viewed the construction process as therapy,...

I viewed the construction process as therapy, something totally different from what I did at my day job. Each individual task was a project unto itself. If I was fabricating a bracket, I tried to...
Forum: Propellers 05-09-2017, 07:15 AM
Replies: 13
Views: 2,039
Posted By brad walton
No nickel leading edges. If I recall correctly, y...

No nickel leading edges. If I recall correctly, y prop was built in 2008 and was before the nickel leading edges were available. I do slow to 2000 rpm when in rain and don't often fly in rain. I...
Showing results 1 to 62 of 472

 
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