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Search: Posts Made By: jrs14855
Forum: Safety Yesterday, 12:32 PM
Replies: 13
Views: 1,074
Posted By jrs14855
Stalls

65 years of unstable approaches just as I learned in the Cub. Ag pilots take this to a whole new level. How come we're not all dead?? Its all about angle of attack.
Watch the RV4 turnback video. All...
Forum: RV General Discussion/News 09-23-2022, 12:45 PM
Replies: 19
Views: 1,813
Posted By jrs14855
Stalls/spins

Spin requirement ended in the early 50's. As far as Private check ride, just do what the examiner wants and then go get some REAL stall spin training.
A real eye opener is the article in a recent...
Forum: RV General Discussion/News 09-20-2022, 01:27 PM
Replies: 13
Views: 1,980
Posted By jrs14855
Reno

Somewhere in the posts on RV7 structural failures there is mention of mods to the vertical tails on at least some of the RV's that race at Reno.
Forum: RV Building Tips/Techniques 09-18-2022, 11:05 AM
Replies: 9
Views: 731
Posted By jrs14855
Screws

There is a variety of other helpful tools for this. Hex head adapter for 1/4" drive adapter. Knurled round ratchet about 1 1/2" diameter. Stubby 1/4" drive ratchet.
Forum: RV General Discussion/News 09-17-2022, 03:50 PM
Replies: 4
Views: 2,264
Posted By jrs14855
RV6

Another RV6 fatal(2) just showed up on Kathryn's Report. Occurred 9/14 in Preston ID. Registered to a Vale OR address
Forum: West (and Southwest) 09-15-2022, 05:29 PM
Replies: 20
Views: 1,285
Posted By jrs14855
RENO

Stead went down to 3 miles and the few spectators that were there have mostly gone home. Two Formula One heat races today if I read it correctly and a lot of wasted time.
Forum: West (and Southwest) 09-15-2022, 10:22 AM
Replies: 20
Views: 1,285
Posted By jrs14855
RENO

RARA is requiring six miles vis for racing. Stead is currently 4 miles. Reno Intl forecast for a four hour window of six miles starting at noon then below six again.
Forum: Safety 09-14-2022, 10:13 AM
Replies: 252
Views: 30,466
Posted By jrs14855
Vans

I think it's way past time for Vans to reveal just what testing was done with the RV9 rudder and provide more specifics on the spin testing with the original rudder.
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 09-14-2022, 10:08 AM
Replies: 10
Views: 973
Posted By jrs14855
Visibility

RARA announced on the website minimum visibility for racing six miles. Two and possibly three of the top sport class either didn't qualify or didn't get there. Top qualifieing speed in sport 330, 70...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 09-13-2022, 01:10 PM
Replies: 10
Views: 973
Posted By jrs14855
Reno

Andreas-
You will need to purchase a pit pass, then go to the Sport Class area. There are 30 plus entrants in Sport Class, should be some RV's
Forum: West (and Southwest) 09-12-2022, 02:10 PM
Replies: 20
Views: 1,285
Posted By jrs14855
Route

OP stated no O2. The ABQ route seems the best considering lack of O2. That route can be flown from AMA to Bullhead City area at 8500' with some deviations for terrain around ABQ and Grants....
Forum: West (and Southwest) 09-12-2022, 12:37 PM
Replies: 20
Views: 1,285
Posted By jrs14855
Route

Watch out for the temperatures. This morning was the first cool morning in at least three weeks and the high temps go all the way to KC area. ABQ is a good routing for no oxygen. it can be done as...
Forum: Propellers 09-10-2022, 05:40 PM
Replies: 5
Views: 834
Posted By jrs14855
Performance

630-551-8733
flyperfprops@gmail.com
Yorkville IL
Forum: Propellers 09-10-2022, 05:31 PM
Replies: 5
Views: 834
Posted By jrs14855
Performance

Performance Propellers is now in the Chicago area. Two brothers trained by Frank and they took over the business.
Morris??? Il. I'll post more info when I find it.
Forum: RV General Discussion/News 09-10-2022, 02:35 PM
Replies: 60
Views: 5,891
Posted By jrs14855
LL Ban

Just showed up on Barnstormers. CA politicians lobbying for total ban on Lead fuels in US.
Forum: RV-7/7A 09-04-2022, 09:57 AM
Replies: 43
Views: 8,637
Posted By jrs14855
Carbs

The OP's engine is fuel injected. The marvel carbs on the Lycoming have had issues with float rubbing against the bowl causing the float to stick. This is at least partially due to the poor fit of...
Forum: Probable Cause Documents Discussed 08-31-2022, 06:39 PM
Replies: 84
Views: 7,286
Posted By jrs14855
Fuel

That's why nobody but me ever touches my airplane. A proper ground flow test would have identified that immediately.
Forum: RV General Discussion/News 08-31-2022, 03:03 PM
Replies: 23
Views: 2,091
Posted By jrs14855
Talk

I detest excess talk on CTAF. Worst example-xxx is 8 miles southwest last call. Likewise the use of the world uncontrolled. Its NON TOWER.
Forum: Safety 08-29-2022, 12:51 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Gee Bee

The first racing Gee Bee was the Z. The original was lost in a fatal accident during a speed record attempt. After years of speculation it is now believed, as a result of the testing that Kermit had...
Forum: Safety 08-29-2022, 12:45 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Flutter Testing

Kermit got involved in flutter testing after the loss of a close friend in a flutter accident in a aerobatic monoplane. After the recommended modifications, similar airplanes were trouble free except...
Forum: Traditional Aircraft Engines 08-29-2022, 11:19 AM
Replies: 10
Views: 1,751
Posted By jrs14855
TBO

The late Monty Barrett told me that a 540 with 10-1 compression flown hard will be ready for a major at around 700 hours.
The other consideration is will the 100LL replacement work on a 10-1...
Forum: Safety 08-29-2022, 11:02 AM
Replies: 252
Views: 30,466
Posted By jrs14855
Testing

The standard is ground vibration testing, not inflight testing with the risk of losing the airplane and possibly the test pilot. Ground vibration testing is very expensive.
Forum: Safety 08-28-2022, 08:19 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Post 187

The correct number:
RV4 none
RV6 none
RV8 one, wing failure, not related to tail or flutter.
Forum: Safety 08-28-2022, 06:27 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Acccident #4

This is a very misleading statement by the investigators. The rudder and vertical stabilizer were one mile from the main wreckage.
In the NJ accident the lower half of the rudder and the fin were...
Forum: Safety 08-27-2022, 03:59 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Spins

I will break this down so the most uninformed person MIGHT understand. If someone offered to let me fly an RV7 with the small tail I would accept the offer and then do a lot of spins and form an...
Forum: Safety 08-26-2022, 01:06 PM
Replies: 252
Views: 30,466
Posted By jrs14855
That is incorrect. King Air Vmo (airspeed) does...

That is incorrect. King Air Vmo (airspeed) does not change until the crossover altitude between airspeed and mach number at approximately 27'000' (FL270) Below that altitude Vmo is a constant...
Forum: Safety 08-25-2022, 04:27 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Arlington, AZ RV7

Some interesting highlights from the NTSB Probable Cause:
"cockpit canopy, vertical stabilizer and rudder were found about 1 mile from the main wreckage".
Probable Cause:
Inflight overstress...
Forum: RV Ongoing Maintenance Issues 08-25-2022, 04:13 PM
Replies: 7
Views: 510
Posted By jrs14855
Whirlwind GA

I agree with what Mel said. I am very happy with the Whirlwind GA.
Forum: RV Ongoing Maintenance Issues 08-25-2022, 03:49 PM
Replies: 7
Views: 510
Posted By jrs14855
Prop

I think Whirlwind has a 68" diameter GA that will work for you.
Forum: Safety 08-25-2022, 11:08 AM
Replies: 252
Views: 30,466
Posted By jrs14855
Dive Testing

There is of course no requirement for EAB to test to part 23 or part 25 requirements.
The Wittman Tailwind in 1953 was the first EAB to be allowed to carry passengers. The CAA(FAA) requirements were...
Forum: Northwest 08-24-2022, 11:24 AM
Replies: 14
Views: 988
Posted By jrs14855
Johnson Creek

Attended June-August
Forum: RV General Discussion/News 08-23-2022, 05:37 PM
Replies: 4
Views: 3,000
Posted By jrs14855
Accident

Not speculating. There is a very nice private strip very close to the apparent accident site. Green Trees CG28. 3000' runway.
Forum: Safety 08-22-2022, 04:33 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Sequence of failure

I have posted what I know about the sequence of events in some of the accidents as well as what is not know in the case of the WA accident. Read the NZ and Atlantic City reports to understand more.
Forum: RV General Discussion/News 08-22-2022, 12:33 PM
Replies: 18
Views: 1,549
Posted By jrs14855
Vlad

Vlad started out in a Manhattan apartment, when it got too big he moved to a rented garage on the NJ side.
Forum: Safety 08-22-2022, 11:03 AM
Replies: 252
Views: 30,466
Posted By jrs14855
Accident Record

What I can find:
RV4 structural failures zero
RV6 structural failures-one that was called a RV6 but was not built to plans. Modified RV3 wings among other poor choices. Continental six cylinder...
Forum: Safety 08-20-2022, 04:21 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Flutter

Around 20 years ago I was talking to a guy at Van Nuys about racing airplanes. After some lengthy discussions he said "would you care to join us for a bowl of soup". I was baffled by the us but we...
Forum: Safety 08-20-2022, 03:40 PM
Replies: 252
Views: 30,466
Posted By jrs14855
RV4

I could tell a story about RV4 rolls but it would incriminate someone else!!
Forum: Safety 08-20-2022, 02:38 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Limitations

Flying within published limits is a very admirable goal.
When I was instructing aerobatics full time in the Pitts S2B, T34, Stearman and Sukhoi SU29 I would always try to provide time for a short...
Forum: Safety 08-20-2022, 11:35 AM
Replies: 252
Views: 30,466
Posted By jrs14855
RV4

A search using RV-4 wings folded will confirm that at that time there had never been a structural failure of an RV-4. I believe that remains correct.
That misconception likely came from confusing an...
Forum: Safety 08-20-2022, 11:19 AM
Replies: 252
Views: 30,466
Posted By jrs14855
Wing Separation

In some of the RV7 reports the breakup starts with the failure of the vertical tail, followed by the horizontal tail, then the wing(s) The NZ report clearly states rudder flutter.
So yes, the wings...
Forum: Safety 08-19-2022, 02:57 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Test Pilot Mode

If you built an EAB and flew the entire phase one, certifying documentation as required-exactly what mode were you in if not test pilot mode?
To the letter of FAA requirements for EAB the airplane...
Forum: Safety 08-19-2022, 01:29 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Barnaby Wainfan

I really enjoy the Wainfan articles in Kitplanes. The current online issue the subject is vertical tails. Following Wainfan's logic the RV6 and RV7 would have much improved spin recovery if the...
Forum: Safety 08-18-2022, 01:40 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Flutter

The Polen Special is derived form the Midget Mustang I which was designed by a Pier Engineer in the 40's. The Polen flew successfully for many years and then developed rudder flutter. The fix was a...
Forum: Safety 08-18-2022, 01:27 PM
Replies: 252
Views: 30,466
Posted By jrs14855
Comments

Things I haven't seen mentioned;
Utah airplane was in an area of possible moderate to severe turbulence.
Utah airplane was "estimated" by NTSB to be 128# over aerobatic gross weight.
The Washington...
Forum: Places To Fly...Things to See...Things to Eat 08-18-2022, 10:19 AM
Replies: 12
Views: 1,018
Posted By jrs14855
AR6

The AR6 was involved in a ground collision at the start of a race at Reno. I don't remember the date or whether it raced again. Damage was subsstantial but repairable.
Forum: Safety 08-17-2022, 11:07 AM
Replies: 252
Views: 30,466
Posted By jrs14855
Poem

Aviation Courtesy starts out with a rather macabre poem about "Ace". If anyone remembers this being in Sport Aviation I would like to know.
Forum: RV Ongoing Maintenance Issues 08-17-2022, 11:01 AM
Replies: 7
Views: 2,344
Posted By jrs14855
Bolts

Try NAS bolts if you can find them. Current pressure recovery wheel pants are completely different.
Forum: California 08-17-2022, 10:50 AM
Replies: 2
Views: 492
Posted By jrs14855
Dirt Strip

Very active monsoon season with lots of flooding in this area. Not a good time to try that strip.
Forum: Safety 08-17-2022, 10:45 AM
Replies: 252
Views: 30,466
Posted By jrs14855
A Must Read

For anyone with limited aerobatic experience planning aerobatics in an RV, Van's An Aerobatic Epistle is a must read. That also took me to a lengthy article by Van and others that was submitted for...
Forum: RV-8/8A 08-16-2022, 02:26 PM
Replies: 4
Views: 836
Posted By jrs14855
Rudder trim

The concept comes from a Sport Aviation from the 60's. Bias springs on the elevator have been used since 1953 on Wittman Tailwinds. I have three axis bias spring trim on my current Tailwind.
Also...
Forum: Traditional Aircraft Engines 08-15-2022, 04:47 PM
Replies: 9
Views: 432
Posted By jrs14855
Pump

That tempest chart shows the different style arms. You will need the special fittings, lock nut and o rings.
Forum: RV General Discussion/News 08-15-2022, 02:01 PM
Replies: 30
Views: 3,335
Posted By jrs14855
DPE

Catherine C's article in AOPA pilot is a good read. Pathetic lack of knowledge among some DPE's and Instructors. One small example:" aircraft will not stall with nose below horizon."
Forum: Traditional Aircraft Engines 08-15-2022, 01:56 PM
Replies: 9
Views: 432
Posted By jrs14855
Pump

Looks like 41234, 15473, LW15473, 75247 and 40256 will all work. All rated at 25-30 psi. Try Chief Aircraft if you need more info.
Pump is used on a variety of Lycoming's from 320 to 540.
Forum: Traditional Aircraft Engines 08-15-2022, 12:45 PM
Replies: 9
Views: 432
Posted By jrs14855
Pump

My attempts to verify part number took me to angle valve engines which is not where I wanted to go.
Strange that they do not list Pitts S1S which is exactly what one wants.
O 360A series, parallel...
Forum: Traditional Aircraft Engines 08-15-2022, 10:52 AM
Replies: 9
Views: 432
Posted By jrs14855
Fuel Pump

This is difficult to "officially" pin down. The A4K is a Grumman Tiger engine with rear mounted horizontal carb.
This is further complicated by two different generations of AC style carbs, some of...
Forum: Propellers 08-08-2022, 10:48 AM
Replies: 1
Views: 390
Posted By jrs14855
GA Prop

Build a tool from wood with rubber padding that will give you some leverage. Use a laser light taped to the protractor in conjunction with marks on floor to adjust the pitch. I did mine with the hub...
Forum: RV General Discussion/News 08-07-2022, 10:40 AM
Replies: 53
Views: 9,157
Posted By jrs14855
Landing at Oshkosh

It always amazes me to watch the Ford, AT6's Beech 18 taildraggers, etc handle gust to 30 straight across 36, but some of the nosedraggers can't handle 10 knot crosswind.
Forum: RV General Discussion/News 08-05-2022, 10:19 AM
Replies: 53
Views: 9,157
Posted By jrs14855
Response

The one word magic response is UNABLE!!!!!
Forum: Traditional Aircraft Engines 08-01-2022, 03:38 PM
Replies: 14
Views: 2,137
Posted By jrs14855
Compression

[QUOTE=MacCool;1623958]In this Quest for Fire, where does the looming switch to 92-93 octane unleaded no-ethanol Avgas fall in the equation? Just curious.[/QUOTE
When the 100LL goes awaay that is the...
Forum: Traditional Aircraft Engines 07-13-2022, 06:19 PM
Replies: 7
Views: 1,015
Posted By jrs14855
Cooler

Forgot to mention I have a plenum that I designed and built which probably contributes to low oil temperatures.
Forum: Traditional Aircraft Engines 07-13-2022, 05:09 PM
Replies: 7
Views: 1,015
Posted By jrs14855
Cooler

Non RV, 320 with 10-1 pistons, mags and carb. Cooler is angled back about 15 degrees, no stand off at the bottom. Small inlets and outlets, cowl flap.
No problems in hot weather, runs a bit too cool...
Forum: Places To Fly...Things to See...Things to Eat 07-11-2022, 04:21 PM
Replies: 20
Views: 1,681
Posted By jrs14855
Watertown

Hotels near the airport have been booked for months, rates double pre covid rates. There are rooms available at Hartford but they are the other side of town from the airport and I don't believe they...
Forum: RV-14 07-11-2022, 04:17 PM
Replies: 8
Views: 873
Posted By jrs14855
Drill

#8 screw is .160, so the proper drill size is #20 at .161. This is confirmed by measuring the pilot on countersink which measures .160. Countersink came in a plastic bag labeled #20 pilot.
Forum: Traditional Aircraft Engines 07-08-2022, 06:36 PM
Replies: 11
Views: 1,500
Posted By jrs14855
Christen Inverted System

Lycoming 0 360A4A with Christen system installed according to manual, cold engine oil pressure will be low side of green, increasing as oil temperature increased.
Showing results 1 to 64 of 500

 
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