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Search: Posts Made By: jrs14855
Forum: Traditional Aircraft Engines 04-20-2018, 06:15 AM
Replies: 9
Views: 505
Posted By jrs14855
Knock off

The Christen is a knock off of the system originally designed by Curtis Pitts, many years before Christen got involved.
I don't like the way Raven mounts the three way valve. Really Mickey Mouse....
Forum: Traditional Aircraft Engines 03-30-2018, 04:36 PM
Replies: 7
Views: 450
Posted By jrs14855
CHT

A momentary excursion to 425 for the first couple of flights probably will not hurt anything. Setting the timing to 22 degrees for break in will likely help keep the CHT's under 400. If you see them...
Forum: Traditional Aircraft Engines 03-30-2018, 04:26 PM
Replies: 7
Views: 450
Posted By jrs14855
RPM redline

Most current production Lycoming non helicopter engines are red lined at 2700. Some of the old 0 235 and 0 290 engines were rated at 2850 for five minutes for takeoff with the Sensenich and Aeromatic...
Forum: Traditional Aircraft Engines 03-30-2018, 03:04 AM
Replies: 7
Views: 450
Posted By jrs14855
Markings

Normal operating range is marked in green. On most Lycoming engines max oil pressure red line has been 115 for many years.
Forum: Safety 03-25-2018, 02:33 PM
Replies: 17
Views: 1,895
Posted By jrs14855
Guns

If you come face to face with Brer Bear in Canada you might wish you'd brought the shotgun
Forum: RV-14 03-25-2018, 02:29 PM
Replies: 25
Views: 3,558
Posted By jrs14855
AN Nuts

A nut for a drilled shank blot using a cotter pin is a CASTLE NUT.
Certificated aircraft have a long history of successfully using all metal lock nuts on engine mount to engine bolts on dynafocal...
Forum: RV-3 03-25-2018, 01:32 PM
Replies: 15
Views: 1,945
Posted By jrs14855
Forces

Barnaby Wainfan wrote an excellent article on this and much more in Kitplanes. This was some time ago and I don't have the exact date,
On some non RV airplanes if you bulge the trailing edge out too...
Forum: Traditional Aircraft Engines 03-15-2018, 04:08 PM
Replies: 11
Views: 1,214
Posted By jrs14855
0 360

In the era when 180 hp fixed pitch Pitts was the dominant aircraft in competetion, those engines survived 3300-3500 rpm for 1200 hours, which was the aerobatic TBO in that era.
The geared engines in...
Forum: RV General Discussion/News 03-12-2018, 05:29 PM
Replies: 9
Views: 1,353
Posted By jrs14855
Engine

With the 10-1 pistons in my 0 320(Wittman Tailwind), I have had no significant issues with temps including engine break in in 100-120 degree ambient temperatures. First few hours I did have to pull...
Forum: RV-3 03-12-2018, 12:56 PM
Replies: 4
Views: 739
Posted By jrs14855
Night

Night VFR Part 91 requires only a strobe and position lights. For many years a single strobe on top of the vertical fin was common on RV's.
Forum: RV General Discussion/News 03-12-2018, 12:50 PM
Replies: 9
Views: 1,353
Posted By jrs14855
High Compression

Facts:
Wide deck 0 320 crankcases are all similar or the same as far as strength goes. There are several variations in cylinder studs vs thru bolts.
O 320 wide deck cylinders are essentially the same...
Forum: Traditional Aircraft Engines 03-08-2018, 05:03 PM
Replies: 9
Views: 685
Posted By jrs14855
Pressure

On the Pitts in cooler temps the pressure will be lower at first and will increase as the oil temp warms up.
The Christen system is not a perfect system. There will be momentary drops in OP,...
Forum: RV General Discussion/News 03-08-2018, 04:52 PM
Replies: 27
Views: 2,959
Posted By jrs14855
Bear

Also Rod Lewis, the current caretaker of the Bear, has been making noises about a redo of the speed record in the new category.
Forum: RV General Discussion/News 03-08-2018, 04:50 PM
Replies: 27
Views: 2,959
Posted By jrs14855
Climb

If I remember correctly Lyle did standing start to 10'000' in 90 seconds in Rare Bear. Despite all the hoopla recently about speed records IIRC Lyle's speed record in the Bear will never be beaten...
Forum: Traditional Aircraft Engines 03-08-2018, 12:13 PM
Replies: 6
Views: 589
Posted By jrs14855
Engine

With any engine builder that builds experimental engines all bets are off. As an example my 0 320 is built from a crankcase for an E series engine(-27A) which has the two piece front main bearing...
Forum: Traditional Aircraft Engines 03-08-2018, 12:07 PM
Replies: 6
Views: 589
Posted By jrs14855
Serial number

The dashXX denotes a series. For example -27 would be E series engines, some of that series have different front main bearings that do not support a constant speed prop although the case can be...
Forum: Traditional Aircraft Engines 03-07-2018, 03:19 PM
Replies: 19
Views: 1,287
Posted By jrs14855
Mopunt

The crankcase shops weld up the existing holes, machine the angle and drill the angled holes. This is a lot of work and at the most recent price I have of $300 quite a bargain.
The basic castings...
Forum: Traditional Aircraft Engines 03-07-2018, 03:13 PM
Replies: 19
Views: 1,287
Posted By jrs14855
Crank

Doesn't exactly answer your question. The 0 320 and O 360 cranks come in lightening hole(early) and non lightening hole configurations. There are aerobatic cranks for both engines and they are...
Forum: Traditional Aircraft Engines 03-07-2018, 09:45 AM
Replies: 19
Views: 1,287
Posted By jrs14855
Engine numbers

The G in ground power units (O 290G) is a totally different designation than the G in other Lycoming engines.
Forum: RV General Discussion/News 03-07-2018, 09:35 AM
Replies: 21
Views: 2,980
Posted By jrs14855
That is not correct concerning 4130. Chinese 4130...

That is not correct concerning 4130. Chinese 4130 has been a problem for many years in the US. It is junk and I would not consider using it on an airplane. Dillsberg in PA was a large supplier of...
Forum: RV General Discussion/News 03-05-2018, 06:08 AM
Replies: 29
Views: 2,939
Posted By jrs14855
Mogas

Standard compression 0 360 parallel valve runs fine on mid grade mogas.
Forum: Traditional Aircraft Engines 02-05-2018, 08:49 PM
Replies: 13
Views: 1,401
Posted By jrs14855
Lycoming

Your post is meaningless. Are you referring to crankshafts, 0 235, o 290, o290G???????
My reference to 0 235 horsepower rating is regarding the most common 0 255C series. Exhaust, crossover vs...
Forum: Traditional Aircraft Engines 02-05-2018, 06:52 PM
Replies: 13
Views: 1,401
Posted By jrs14855
Flange

The 0 290G used an 0 235 crankshaft. Those engines were rated at 100, 108 and 115 horsepower. The G's in homebuilts in many cases were run at fairly high rpm. Cut down metal props were also common in...
Forum: RV General Discussion/News 02-05-2018, 03:46 PM
Replies: 17
Views: 1,565
Posted By jrs14855
Oil

My 0 320 with 10-1 pistons and new Lycoming cylinders is the same or maybe less. No concerns.
Forum: Traditional Aircraft Engines 02-05-2018, 03:43 PM
Replies: 13
Views: 1,401
Posted By jrs14855
Crank

Is it a crank with flange lightening holes?? If it does not have lightening holes in my opinion it is better than a perfect crank WITH lightening holes. Also you do not state which engine. Some of...
Forum: RV General Discussion/News 02-03-2018, 09:48 PM
Replies: 3
Views: 331
Posted By jrs14855
Sump

They come in many different flavors. The important issues are mounting location of carb and horizontal screen(late model) vs vertical screen(very early models)
Try Colorado Air Parts in Delta CO
Forum: Traditional Aircraft Engines 02-03-2018, 09:39 PM
Replies: 6
Views: 905
Posted By jrs14855
Flanges

Check to make sure the flanges are not warped from over torqueing. Also if they have been loose for a while the pipes may have worn the flanges a few thousands.
You can put a piece of wet sandpaper,...
Forum: RV Ongoing Maintenance Issues 01-27-2018, 10:09 PM
Replies: 1
Views: 416
Posted By jrs14855
Oil Gage

Try Colorado Air Parts in Delta CO
Forum: RV General Discussion/News 01-06-2018, 10:58 PM
Replies: 14
Views: 2,460
Posted By jrs14855
I drill the rivet first and machine the od of the...

I drill the rivet first and machine the od of the head so it just clears the threads on the fitting. No need to remove the entire head. I have a chuck that will hold the #60 drill bit. The small...
Forum: RV-7/7A 01-04-2018, 11:38 AM
Replies: 13
Views: 2,564
Posted By jrs14855
In Flight Breakups

I probably have posted this before. More than 25 years ago when I was instructing aerobatics in the Pitts S2B I had a trainee from Montana?? who tried to teach himself aerobatics in RV6. He got lost...
Forum: RV-7/7A 01-04-2018, 11:25 AM
Replies: 13
Views: 2,564
Posted By jrs14855
In Flight Breakups

You should read the accident report on the 7 in Atlantic City area a few years ago. IIRC the final report took about 2 years.
The 9G test would be standard protocol for 6G limit, ie, test to 150% of...
Forum: RV-3 01-01-2018, 10:00 PM
Replies: 35
Views: 6,102
Posted By jrs14855
Who

Abbott and Costello "who's on first" dates to 1938. Audio, video and text available online. One of the all time classics in my opinion.
Forum: RV-3 01-01-2018, 09:54 PM
Replies: 35
Views: 6,102
Posted By jrs14855
Weld

There simply is not enough room to do any welding on the aft side of the gear socket. The mount must be removed form the airplane. As I posted before, a talented welder can close up the holes on the...
Forum: RV-3 01-01-2018, 08:45 PM
Replies: 35
Views: 6,102
Posted By jrs14855
Bolt

Not a big deal. The shaped flat doubler is pretty much the standard repair. I think there are a lot more of these repairs than people realize, just not many talking about it. My proposed doubler...
Forum: RV-3 01-01-2018, 08:32 PM
Replies: 35
Views: 6,102
Posted By jrs14855
Bolt

Not a big deal. The shaped flat doubler is pretty much the standard repair. I think there are a lot more of these repairs than people realize, just not many talking about it. My proposed doubler...
Forum: RV-3 01-01-2018, 08:10 PM
Replies: 35
Views: 6,102
Posted By jrs14855
Bushing vs flat doubler

I considered that but prefer the flat 4130 doubler shaped to match the socket. My reasoning is that welding a bushing in place produces a lot of scale on the inside which means the bushing must be...
Forum: RV General Discussion/News 12-31-2017, 09:54 PM
Replies: 40
Views: 7,049
Posted By jrs14855
Spins

Most of the biplanes are far more prone to inadvertent spins than the monoplanes, the Sukoi being an exception. The Pitts S2B will probably do at least 10 and maybe 20/30 flat spins out of botched...
Forum: RV-3 12-31-2017, 09:29 PM
Replies: 35
Views: 6,102
Posted By jrs14855
Gear

That is not possible on the Wittman Gear. The upper portion of the gear leg where the bolt goes is only about 3/4" in length, the gear then steps down in diameter to 7/8* diameter on most RV's and I...
Forum: RV-3 12-31-2017, 08:37 PM
Replies: 35
Views: 6,102
Posted By jrs14855
Bolt

I built my first Wittman Tailwind to an old set of plans that did not specify the gear bolt size. I don't remember how I made the decision but I used an AN6 bolt. 1000 hours when I sold the airplane...
Forum: RV Ongoing Maintenance Issues 12-29-2017, 06:11 AM
Replies: 7
Views: 1,689
Posted By jrs14855
width

Measured from the center of the rocker covers the angle valve is the same width as the parallel. However the shape of the cylinder head can cause clearance issues on a very tight cowl.
A lot can be...
Forum: Traditional Aircraft Engines 12-22-2017, 03:15 PM
Replies: 14
Views: 2,058
Posted By jrs14855
Bolts

Bolts from former ECI, Superior and Lycoming may not look the same or have the same plating. I got new bolts- some were silver, some had the yellow dichromate dip that is done after the cad plating....
Forum: RV General Discussion/News 12-22-2017, 03:09 PM
Replies: 17
Views: 7,526
Posted By jrs14855
Wings

A hammer and some Bondo, no problem, good to go. I track a 1964 Cherokee that is still active. It got the Bondo treatment when it was only a few months old. Bird strike. Bird was nesting about 2 feet...
Forum: Traditional Aircraft Engines 12-16-2017, 03:10 PM
Replies: 14
Views: 2,058
Posted By jrs14855
torque

no helicoil. Standard torque. I believe the parts catalog calls for a washer under the bolt head.
Forum: RV-7/7A 12-11-2017, 10:41 AM
Replies: 5
Views: 697
Posted By jrs14855
Vernier

Vernier throttle is standard on most Bonanzas.
Forum: RV Ongoing Maintenance Issues 12-09-2017, 10:42 AM
Replies: 11
Views: 1,115
Posted By jrs14855
RTV

Plus one. Repair it properly.
Forum: RV General Discussion/News 12-08-2017, 05:04 PM
Replies: 39
Views: 8,607
Posted By jrs14855
Alternative

For many years the standard attach method for Wittman Tailwind was the steel strapping bands used in packaging. Maybe four straps in the length of the gear leg. You would need to find someone to loan...
Forum: RV-8/8A 12-05-2017, 06:26 PM
Replies: 13
Views: 2,503
Posted By jrs14855
Dave Anders

Dave Anders has done a series of articles for Kitplanes over the last few months. I'm not sure how detailed the cowl info is but his outlet is substantially smaller than inlet. The articles do cover...
Forum: Traditional Aircraft Engines 11-29-2017, 04:03 AM
Replies: 8
Views: 1,370
Posted By jrs14855
Case

One should use some kind of case splitting tools. Home made tools can be made that bolt to the cylinder studs and push against two crank throws with a threaded rod into a fixed nut at each location....
Forum: RV General Discussion/News 11-21-2017, 11:10 AM
Replies: 11
Views: 1,670
Posted By jrs14855
Bushings

0 320 can be 3/8 or 7/16 flange bushings.
Instead of using the proper size bolt use an undersize threaded rod and heavy washers to install the new bushings. Much simpler and faster.
Forum: RV-10 11-13-2017, 06:59 AM
Replies: 5
Views: 812
Posted By jrs14855
Mag

The most likely possibility is that one spark plug wire is not properly inserted into the distributor cap OR that the contact spring on the end of the wire was damaged. Pull off the cover that holds...
Forum: RV General Discussion/News 11-12-2017, 12:48 PM
Replies: 7
Views: 1,130
Posted By jrs14855
History

In the mid 50's Paul Poberezny enlisted the help of Jim Stewart, an Aeronautical Engineer with Allison Engines. With the help of three other Allison engineers they designed and drew up plans for the...
Forum: RV-6/6A 11-11-2017, 12:53 PM
Replies: 21
Views: 2,303
Posted By jrs14855
Idle

Could also be FOD ingested via carb heat or alternate air. Same result: blockage in idle circuit.
Forum: RV General Discussion/News 11-11-2017, 10:38 AM
Replies: 70
Views: 11,073
Posted By jrs14855
Ed Long

I had the pleasure of meeting Ed, I think in 1993. Up until that era when people started writing about Ed, Max Conrad was considered one of the highest time pilots with around 45000 hours.
I have...
Forum: RV General Discussion/News 11-09-2017, 07:20 AM
Replies: 18
Views: 1,112
Posted By jrs14855
Nut

If the nut is reasonably accessable use a die grinder with a thin disc and CAREFULLY split the nut down the middle with the grinder. Then grind off the split portion of the bolt and remove. The...
Forum: RV General Discussion/News 11-08-2017, 09:59 PM
Replies: 70
Views: 11,073
Posted By jrs14855
IMC

I have been sort of tracking an interesting scenario for many years. That is Unlimited Category completion pilots scud running, on occasion in weather below ILS minimums. Duane Cole did this and got...
Forum: RV-7/7A 11-01-2017, 10:15 PM
Replies: 10
Views: 1,307
Posted By jrs14855
Screws

Stainless allen head screws (aircraft spruce) work great and wont interfere with cover. Flat washer and star lock washer under the screws same as most other Lycoming fasteners.
Forum: COMM 10-10-2017, 02:48 AM
Replies: 6
Views: 565
Posted By jrs14855
KY197

I have a KY197, 14 volt, TSO, working when removed, tray, plug and antenna pigtail included $700 plus shipping jrs14855@hotmail.com
Forum: Traditional Aircraft Engines 10-09-2017, 03:34 AM
Replies: 2
Views: 646
Posted By jrs14855
Plug

If you don't pierce the rear plug the oil will likely blow out the front plug.
Forum: RV Building Tips/Techniques 10-04-2017, 01:52 AM
Replies: 16
Views: 2,322
Posted By jrs14855
deburring

1/4" shank 3/8 diameter 100 degree countersink, six flutes. MSC supply or industrial hardware store. If you can't find a handle for it make one. I can't find a source for the handle I have had for...
Forum: Trip Write-ups 09-20-2017, 05:09 PM
Replies: 32
Views: 5,016
Posted By jrs14855
Distance

998 nm nonstop in the Wittman Tailwind in 6.1 hours. 75% power, significant headwind first 2/3, tailwind last 1/3. Pecos TX to Watertown WI.
St. Johns, Newfoundland to Shannon Ireland flight plans...
Forum: Trip Write-ups 09-19-2017, 07:09 PM
Replies: 32
Views: 5,016
Posted By jrs14855
Bill Harrelson

Many seem to have forgotten that before the around the world Bill flew the Lancair nonstop from Guam to Florida. World record for weight class-distance in a straight line.
Forum: RV General Discussion/News 09-14-2017, 04:18 PM
Replies: 25
Views: 4,450
Posted By jrs14855
Speed

And ADI and probably special fuel and obscene power settings. Oh and a special prop that allegedly is junk after FIVE hours.
Showing results 1 to 62 of 500

 
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