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Search: Posts Made By: theduff
Forum: Traditional Aircraft Engines 06-17-2019, 02:10 PM
Replies: 2
Views: 293
Posted By theduff
Use O-rings

They are not the same as the standard o-rings used on the throughbolts. If memory serves you need
STD-2013 o rings. I’ll confirm the number when I get to the Hangar latter.
Part # confirmed.
Forum: Propellers 05-17-2019, 09:06 AM
Replies: 3
Views: 552
Posted By theduff
Aircraft Spruce BN-4

Correction : correct part # is BN3
I used a 12” polished aluminum spinner from Aircraft Spruce on the original cowl on my 4. I still have the spinner but the it has been cut for a Performance...
Forum: Traditional Aircraft Engines 05-05-2019, 07:15 AM
Replies: 69
Views: 15,711
Posted By theduff
Bore and Stroke

Typo: The 390 has a bore of 5.319 ( 5-5/16Ē )
Iíve been waiting for someone to manufacture a set of parallel valve heads with this bore. I know of one set that was prototyped and showed promising...
Forum: Traditional Aircraft Engines 04-02-2019, 12:24 AM
Replies: 7
Views: 796
Posted By theduff
540 A-case

Iím sure it has the right A-case on it because I donít believe the 360 A-case will even bolt on. The 76096 number your referring to is a casting number which is located on the top of the A-case...
Forum: Traditional Aircraft Engines 04-01-2019, 04:36 AM
Replies: 7
Views: 796
Posted By theduff
540 A-Case

A 540 Acc. Case is not interchangeable with a 320/360 acc. case. The accessory drive gears utilize a different arrangement. FYI an 0235 A case is not interchangeable with a 320/360 A case, different...
Forum: Traditional Aircraft Engines 03-03-2019, 12:35 PM
Replies: 27
Views: 5,656
Posted By theduff
Tappet Spalling

In my opinion Lycoming has solved this problem twice. First with the conversion of most production engines to roller tappets and secondly for rebuilders of flat tappet engines the new spec. DLC...
Forum: Traditional Aircraft Engines 03-03-2019, 10:01 AM
Replies: 27
Views: 3,385
Posted By theduff
ECI group A cylinders

You should read the AD carefully. IMSC, group A cylinders have to be pulled if their compression is 70/80 or below. If they’ve separated at the head to barrel interface ( via the soap bubble test )...
Forum: Traditional Aircraft Engines 02-03-2019, 09:27 PM
Replies: 69
Views: 15,711
Posted By theduff
XP-400 crank break photos

Here’s a couple of photos of the last XP400 crankshaft break. If memory serves correctly this engine was built in 2016 and had aprox 300 hrs...
Forum: Traditional Aircraft Engines 02-01-2019, 10:17 AM
Replies: 69
Views: 15,711
Posted By theduff
XP-Crank failures

Due to one of those happenstance change in travel plans I ended up being Present at the tear down of the latest 400 failure. This one broke through the #4 rod journal at aprox 45 degree angle....
Forum: Traditional Aircraft Engines 01-30-2019, 08:26 AM
Replies: 69
Views: 15,711
Posted By theduff
XP-400 Crank failure

They have 5 documented crank failures now. One occurred last week with an engine only running 20 degree timing. It’s being shipped to a reputable repair station for tear down. If your flying a 382 or...
Forum: RV-4 01-09-2019, 11:19 AM
Replies: 28
Views: 4,397
Posted By theduff
Thumbs up Aft CG

I have a one off sliding canopy on my 4 along with electric flaps motor repurposed from a Cessna so Aft CG has always been a concern to me. I changed engines to an injected 360 from a light 320 still...
Forum: Traditional Aircraft Engines 12-11-2018, 12:14 AM
Replies: 3
Views: 1,043
Posted By theduff
IO-360-A1B6 vs IO-360-A1A

These 2 engines are virtually Identical, they use the same case Sump and jugs. The notable difference is in the A1B(6), the 6 denotes a counter weighted crankshaft ( moveable pendulums ) but both...
Forum: Virtual Hangar 12-06-2018, 11:22 AM
Replies: 1
Views: 1,197
Posted By theduff
End Play

It does happen occasionally. If the crankshaft while in its most forward position doesnít have the clearance between the slinger and case it make contact while running with a prop pulling on it....
Forum: RV General Discussion/News 09-26-2018, 02:36 PM
Replies: 10
Views: 2,684
Posted By theduff
LyCon O-ringed Cases

I have been using LyCon for this service for several years on 4 cylinder Lycoming with no leaks at all ! You need to torque the cases together then trim the excess o-ring material flush before...
Forum: Traditional Aircraft Engines 09-13-2018, 02:54 PM
Replies: 85
Views: 29,294
Posted By theduff
Taper fin inter-cylinder baffles

As The ECI links are defunct from the earlier posts Iím wondering if Continental supplies the inter-cylinder baffle assemblies for the taper fin barrels. If anybody has used them ( if they exist )...
Forum: Traditional Aircraft Engines 07-06-2018, 01:37 PM
Replies: 7
Views: 1,220
Posted By theduff
HIO-360-A1A

The book says it has conical mounts with Bendix fuel injection. Itís listed as 8.7 compression ratio which means itís an angle valve. I would be curious as to which Bendix Fuel Servo it utilizes as...
Forum: Traditional Aircraft Engines 07-05-2018, 09:20 PM
Replies: 7
Views: 1,220
Posted By theduff
HIO-360 TBO

Iíve built several engines for RVís from helicopter engines. I actually prefer them as you donít have to worry about prop strikes in their history. They use the same parts internally so really there...
Forum: Traditional Aircraft Engines 05-09-2018, 10:12 AM
Replies: 1
Views: 585
Posted By theduff
B and C starter fitment issues.

Has anyone else had a problem fitting a B and C starter to an engine equipped with Lycoming’s horizontal induction. ( IO-360-A1B6 ) The fuel servo and the starter are trying to occupy the same space....
Forum: Traditional Aircraft Engines 11-02-2017, 01:08 AM
Replies: 7
Views: 1,120
Posted By theduff
Rods

I have a set of yellow tagged rods that should work for you.

theduff at EarthLink dot net

Duff
Forum: RV-4 10-30-2017, 10:13 AM
Replies: 13
Views: 2,762
Posted By theduff
That particular 4 with the RAF paint scheme was...

That particular 4 with the RAF paint scheme was odd in a few ways. The builder and a buddy bought a pair of engines off a twin and he got the left hand rotating one. The engines were IO-360's (200...
Forum: RV-4 09-24-2017, 09:43 AM
Replies: 8
Views: 1,972
Posted By theduff
RV-4 legroom

+1 on Larry's Comments. You can modify seat back and rudder pedal cable length to accommodate long legs (at the expense of passenger room) but cockpit width is basically the same assuming they...
Forum: Traditional Aircraft Engines 09-24-2017, 09:25 AM
Replies: 59
Views: 9,014
Posted By theduff
O-290

I believe the pushrod tubes are captured by the cylinders on the 290 similar to the Continentals. If this is the case the tubes can't be removed without pulling each respective cylinder.
You may...
Forum: Traditional Aircraft Engines 07-19-2017, 04:27 PM
Replies: 2
Views: 994
Posted By theduff
Link

Thanks for the link.
Forum: Traditional Aircraft Engines 07-19-2017, 02:41 PM
Replies: 2
Views: 994
Posted By theduff
SB-632

Mandatory service bulletin 632 was issued July 17th and its a whopper! The factory supplied undersized small end rod bushings from Nov 2015 to Nov 2016. This includes factory engines and rods as well...
Forum: Traditional Aircraft Engines 06-12-2017, 12:00 PM
Replies: 47
Views: 16,808
Posted By theduff
LyCon Camshaft

The cam in the picture has been reworked by firewall forward with their "centralube" oiling modification. The cam has an internal oil passage drilled through it with the holes on the face of the cam...
Forum: ADS-B 04-07-2017, 05:14 PM
Replies: 698
Views: 221,337
Posted By theduff
Yep that's the guy ? Duff

Yep that's the guy ?
Duff
Forum: ADS-B 04-07-2017, 03:20 PM
Replies: 698
Views: 221,337
Posted By theduff
I just received an email from David Baron of the...

I just received an email from David Baron of the Fort Worth Office of the FAA regarding NavWorx ADSB. He hss requested my phone number to discuss my experience with the EXP unit.I suspect he got my...
Forum: ADS-B 10-24-2016, 07:33 PM
Replies: 698
Views: 221,337
Posted By theduff
I met Bill at Oshkosh and came away favorably...

I met Bill at Oshkosh and came away favorably impressed. He has been using images of my 4 on his website to promote the Exp. units. When I teased him about the unauthorized use of my 4 he offered me...
Forum: RV General Discussion/News 09-28-2016, 12:25 PM
Replies: 12
Views: 2,291
Posted By theduff
Block off plate

I'll priority mail one today. I think the flat rate envelope is $7.95.
Duff
Forum: RV General Discussion/News 09-28-2016, 10:45 AM
Replies: 12
Views: 2,291
Posted By theduff
Pick up tube block off plate

A little secret from the old timers... The plate you seek is found on the 200 hp rocker shaft cover. Got a bunch ,PM if you need one. The plug in the accy case either threads or pulls out depending...
Forum: RV General Discussion/News 06-15-2016, 02:11 PM
Replies: 14
Views: 4,107
Posted By theduff
Oil cooler shutter

Yes I may bit optimistic but I just want to leave the option open. My oil cooler install has it sandwiched between an inlet and outlet duct so I want to have enough room to install it later by...
Forum: RV General Discussion/News 06-15-2016, 01:08 PM
Replies: 14
Views: 4,107
Posted By theduff
Shutter thickness

Is 3/16" an estimate ? I've allowed 0.080" for mounting.,Sounds like I better make another spacer. I'm doing some custom ducting.
Duff
Forum: RV General Discussion/News 06-15-2016, 11:47 AM
Replies: 14
Views: 4,107
Posted By theduff
Vans oil cooler shutter

Anybody have some first hand experience using one of these to regulate oil temp. What is the actual thickness of the unit as I'm doing mockup today?
Duff
Forum: Fuel Injection Systems 06-08-2016, 08:12 AM
Replies: 48
Views: 8,568
Posted By theduff
FI woes

Wish I would have caught this thread earlier but it sounds like you well down the solution path. Just another perspective about fuel injector location. I was helping with a Reno Racer project and we...
Forum: RV General Discussion/News 09-11-2015, 10:22 AM
Replies: 23
Views: 8,576
Posted By theduff
Need a new motor mount !

The new engine is conical mount. That could get expensive if you have to get new gear legs as well !my bad old engine is conical mount as well. The circular engine mount looked like a dynafocal ...
Forum: RV-4 01-31-2012, 08:56 PM
Replies: 46
Views: 22,163
Posted By theduff
Tracy Saylor always claimed the 6 was the fastest...

Tracy Saylor always claimed the 6 was the fastest airframe. You have a clipped wing fastback already with a smoother airflow over the cowling without the cheeks. I know He was faster than my 4.
Forum: RV-4 01-31-2012, 08:50 PM
Replies: 46
Views: 22,163
Posted By theduff
Are You a betting man ??

Bring your RV to Fallbrook along with $ 500.00. If I can't do 200 knots ( ie 230 mph ) you can have my $500.00 if I can... well u know. I'm in the middle of building a new panel so lets set it up for...
Forum: RV-4 01-31-2012, 08:49 PM
Replies: 46
Views: 22,163
Posted By theduff
Are You a betting man ??

Bring your RV to Fallbrook along with $ 500.00. If I can't do 200 knots you can have my $500.00 if I can... well u know. I'm in the middle of building a new panel so lets set it up for Spring and see...
Forum: RV-4 01-29-2012, 10:42 PM
Replies: 15
Views: 3,613
Posted By theduff
Conical Mounts

If everything checks out I would bet that it has a conical engine mount. I've seen them move/sag after just a few hours. FWIW.
Forum: RV-4 01-29-2012, 10:18 PM
Replies: 46
Views: 22,163
Posted By theduff
There are faster RV's.

http://i42.tinypic.com/jhzlnc.jpg

Here is a picture of mine with the cowl off. My personal best recorded speed run in a two way average was 235 mph. It was done at 3500 ft msl on a 90 degree day....
Showing results 1 to 40 of 40

 
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