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Search: Posts Made By: theduff
Forum: RV-4 05-15-2022, 01:21 PM
Replies: 10
Views: 786
Posted By theduff
RV-4 Cabin Noise

I have a high powered RV-4 (over 210 hp) with a 4 into 1 exhaust and absolutely no interior or sound proofing other than leather seats. When I upgraded my 320 w/ 4 into 2 exhaust to the high powered...
Forum: Traditional Aircraft Engines 05-05-2022, 10:24 AM
Replies: 12
Views: 909
Posted By theduff
Lycoming Studs

Quick Hint:
Lycoming studs have different threads at either end. One side fits nicely for the associated nut, on the other the nut binds after only one turn or so. This is by design as the binding...
Forum: RV Ongoing Maintenance Issues 05-03-2022, 11:54 PM
Replies: 23
Views: 1,944
Posted By theduff
Magneto Hiccuping

The points are most likely the problem. After only 29 hrs in service a mag I examined had the same symptoms. After tear down one of the contacts on the lever arm of the points had become dislodged...
Forum: RV-14 04-20-2022, 10:29 AM
Replies: 37
Views: 3,245
Posted By theduff
Starter Malfunction

I too am curious about the gouges in the cowling. What made contact with what ? Maybe another picture from farther away on the cowling to get some perspective.
Forum: RV-14 04-12-2022, 10:58 AM
Replies: 37
Views: 3,245
Posted By theduff
B and C Starter Fitment

I can positively verify that a B&C starter will not fit on an IO-360-A1B6 with the RSA-5 fuel injection. The servo and the starter are competing for the same space. We tried everything and ended up...
Forum: RV Ongoing Maintenance Issues 03-07-2022, 12:23 PM
Replies: 25
Views: 3,925
Posted By theduff
Goose Strike

I had a bird strike in the same location. It completely crushed the leading edge and tore the fuel tank edge skin but luckily the tank wasnít breached. It was pretty shocking to look out at your wing...
Forum: Traditional Aircraft Engines 03-03-2022, 11:57 AM
Replies: 6
Views: 503
Posted By theduff
B&C Injector interference

“FWIW, I have a B&C and the snorkel.“

The B&C starter interferes with the injector on the horizontal sumps. I built an IO-360-A1B6 with the factory sump and an RSA-5 Injector and the servo and...
Forum: Traditional Aircraft Engines 03-03-2022, 07:56 AM
Replies: 6
Views: 503
Posted By theduff
B&C starter fitment

Iím glad B&C is acknowledging the fitment issues with the forward facing horizontal sumps. I ended up with a new B&C starter that I swapped out to a SkyTec to solve a buddyís problem on a new build....
Forum: RV-4 02-08-2022, 09:16 AM
Replies: 3
Views: 621
Posted By theduff
How about sharing that info !

How about sharing that info !
Forum: RV-4 02-04-2022, 11:33 PM
Replies: 36
Views: 4,166
Posted By theduff
$75,000.00 RV-4

I built my 4 from a partially started kit and now have approximately 1400 hrs on it and still love flying it. I finished it in 1999 then tore it down at 1,000 hrs in 2016 to take a look at everything...
Forum: RV-8/8A 01-24-2022, 09:49 AM
Replies: 54
Views: 10,749
Posted By theduff
200 hp RV-4 w/ wood fixed pitch prop

The climb vs speed advantage of a constant speed prop has always intrigued me and the info in this thread is interesting. I would add an interesting counterpoint:
I did a side by side take off and...
Forum: Traditional Aircraft Engines 12-31-2021, 05:36 AM
Replies: 10
Views: 1,480
Posted By theduff
Loose intake flanges on 200 hp sump

Doing an inspection on my intake tubes I noticed one had fuel staining around the flange. I removed the offending tube and while supporting the tube carefully slid the flange across ia flat plate...
Forum: RV General Discussion/News 12-04-2021, 09:03 AM
Replies: 14
Views: 2,555
Posted By theduff
RV-4 vs RV-8

I bumped into Van several years back and discussed this very question with him. At the time my Hangar-mate was building an 8 and it looked so much fatter than my 4; I wondered about drag/speed...
Forum: Traditional Aircraft Engines 12-04-2021, 08:36 AM
Replies: 357
Views: 99,233
Posted By theduff
New Crankshaft

Martin I am so sorry to hear what you guys have been going through and based on Superiorís stroker cranks that failed would have thought they would have been more generous on the rebuild allowance....
Forum: Electronic Ignition Systems 12-01-2021, 05:39 AM
Replies: 37
Views: 7,282
Posted By theduff
37BY plugs

“Background: I have a Lycon IO-540 CB45 (narrow deck, parallel valve) with 10:1 CR. One mag (I've had both Bendix and Slick over the years), one Electroair EI. I run REM37BY massive electrode plugs...
Forum: Safety 10-19-2021, 10:19 AM
Replies: 8
Views: 2,016
Posted By theduff
Slick SB3-08

There is a Slick mandatory SB that covers premature carbon brush wear. If this mag falls within that date range it should have been opened up long before the 500 hr Mark. Depending on its date of...
Forum: The RV Grin 10-15-2021, 03:44 PM
Replies: 8
Views: 2,820
Posted By theduff
Low Pass

I love to fly the ridges in the same fashion but when it comes to Low Passes I always remember a Blue Angel friends wisdom : ď You know you can only tie the record for the lowest passĒ.
Enjoy the...
Forum: RV General Discussion/News 10-02-2021, 09:17 AM
Replies: 2
Views: 586
Posted By theduff
Aero LED Strobes

I had almost the exact same problem with my Right Side unit, especially the Nav light flashing on and off faintly in sync with the faintly flashing Strobe. In my case it was a simple fix as the pins...
Forum: RV General Discussion/News 08-18-2021, 09:56 AM
Replies: 4
Views: 1,317
Posted By theduff
Long Lead Times

Things are definitely backed up out there. The 2 engines I’m building at the moment have both been waiting for parts. For instance I ordered Lycoming Cam kits in the first week of May and was told...
Forum: Traditional Aircraft Engines 07-04-2021, 03:14 PM
Replies: 9
Views: 1,735
Posted By theduff
160 HP Mod

Iím doing my second Certified 172 upgrade with the aforementioned RAM STC......wait for it Try $1000 bucks !! Certified guys get screwed in so many ways. The RAM STC does call for a carburetor...
Forum: Traditional Aircraft Engines 06-16-2021, 09:13 AM
Replies: 8
Views: 4,943
Posted By theduff
Narrow Deck and Wide Deck

As posted above the ND and WD cylinders are apples and oranges. I came across a strange one recently though. A friend asked me to Overhaul his ND 360 and to my amazement it had a WD crankcase...
Forum: RV-8/8A 06-12-2021, 01:36 PM
Replies: 3
Views: 853
Posted By theduff
Rod End Bearings

I requested Priority mail on my female rod bearings on a web order Sunday. They shipped from Vans on Monday and I received them this Thursday. Spruce is closer to me but no faster in this case.
Forum: RV-4 06-11-2021, 12:23 AM
Replies: 3
Views: 949
Posted By theduff
Female Rod End Bearings

Just had a pair delivered today. $20.00 each + $10.51 shipping. I ordered on the web store from the list, last Sunday selected priority USPS shipping and they left Vans Monday arrived today (...
Forum: RV-8/8A 05-30-2021, 06:31 PM
Replies: 9
Views: 1,177
Posted By theduff
Trim Tab Location

Curious why Vans electric aileron trim kits locate the tab on the outboard end of the aileron then.

Duff
Forum: RV-12/RV-12iS 05-29-2021, 11:38 AM
Replies: 35
Views: 9,147
Posted By theduff
Head Set Background Noise

I switched to a Garmin GTR200 from an SL40 in my RV-4 and am having similar issues. It seems when I got rid of my stand alone intercom and switched to the Garminís internal one that it doesnít want...
Forum: Traditional Aircraft Engines 05-25-2021, 06:50 PM
Replies: 9
Views: 1,833
Posted By theduff
You are correct. It is the cylinder stud length...

You are correct. It is the cylinder stud length that prevents the hold down plates from being used.
Forum: Traditional Aircraft Engines 05-25-2021, 08:26 AM
Replies: 9
Views: 1,833
Posted By theduff
The 150 hp and 160 hp ND cylinders are different....

The 150 hp and 160 hp ND cylinders are different. The 150 hp cylinders used without hold down plates have spot-facing around the stud holes to allow the cylinder nuts a nesting place in the radiused...
Forum: Traditional Aircraft Engines 05-24-2021, 09:43 PM
Replies: 9
Views: 1,833
Posted By theduff
Well I know of an instance of 10-1compression...

Well I know of an instance of 10-1compression pistons being used in a ND 320 without hold down plates. (short stud case). So yes YOU COULD swap 8.5-1 pistons and it should work ok. I would be leery...
Forum: RV-10 05-20-2021, 10:52 AM
Replies: 13
Views: 3,096
Posted By theduff
Split Lower Cowl

[QUOTE=rocketman1988;1527004]You should consider making the cowl such that the lower portion can be split longitudinally; I did this on my Showplanes cowl and it is the best mod EVER.

Intriguing...
Forum: RV General Discussion/News 05-15-2021, 08:48 AM
Replies: 7
Views: 1,370
Posted By theduff
0-320 crankshaft bushings

An 0-320 is either set up to use 3/8Ē or 7/16Ē prop bolts. The 360ís use the 1/2Ē prop bolts. An 0-320 crank flange can not accommodate the drive lugs for 1/2Ē prop bolts. As Mel says simple to swap...
Forum: RV General Discussion/News 05-12-2021, 10:56 PM
Replies: 12
Views: 3,856
Posted By theduff
Starter Shim

Hey Andy,
I sent you the shim I had. Good luck on getting some duplicates made. Would appreciate a note when you get it.
Duff
Forum: RV-4 05-10-2021, 09:49 PM
Replies: 6
Views: 1,681
Posted By theduff
A Big Thank You !

David had exactly what I needed. Old School for sure !
Forum: RV-4 05-09-2021, 09:59 PM
Replies: 6
Views: 1,681
Posted By theduff
Help! Pre ď89Ē RV-4 Plans needed !

The plans I used to build my 4 are long gone and the replacement set I use (mid 90ís) doesnít have the detail Iím looking for. On page 30 it shows the detail for attaching the horizontal stab and...
Forum: RV Ongoing Maintenance Issues 05-03-2021, 07:24 AM
Replies: 6
Views: 1,576
Posted By theduff
RV-4 cowl deforming inward

When I first started flying my 4 with the early gel coat cowl I would get a buckle inward on top of the cowl between the firewall and rear baffles. Vans attributed the phenomenon to low pressure...
Forum: RV General Discussion/News 04-28-2021, 09:00 AM
Replies: 12
Views: 3,856
Posted By theduff
Stuck Starter Pinion Gear

Iíve had the same problem on a couple of occasions. Iíve used the shim once with good results on the other occasion it didnít solve the problem but another starter and ring gear combination did. I...
Forum: Traditional Aircraft Engines 04-22-2021, 09:26 PM
Replies: 9
Views: 1,019
Posted By theduff
Constant Speed Oil Port

The governor line connects to the case via a 90* fitting to a pipe thread port on the right side case half. This port is on a boss in front of cyl.#1. The port is present in your picture of your...
Forum: Traditional Aircraft Engines 04-22-2021, 10:43 AM
Replies: 9
Views: 1,019
Posted By theduff
Constant Speed Set Up

Your crank has the cross feed tube and your case has the long front main bearing required for constant speed use. The only thing required for conversion is a plug installed in the rear of the front...
Forum: Traditional Aircraft Engines 04-22-2021, 10:16 AM
Replies: 4
Views: 745
Posted By theduff
Temp Mag Cover

How bout you guys with 3D printers make some up ? Iíd purchase a couple.
Duff
Forum: Traditional Aircraft Engines 04-22-2021, 10:06 AM
Replies: 9
Views: 1,019
Posted By theduff
E2D Crankshaft

The E2D Crankshaft does not have the cross feed tube required for constant speed use. This crankshaft can be transferred to the long front main-bearing case (with a drain port being drilled into the...
Forum: Traditional Aircraft Engines 04-14-2021, 07:49 AM
Replies: 4
Views: 853
Posted By theduff
Forward Facing Sump

I used a magnesium sump off of a IO-360-C1C on my PV 360 but had to fabricate/modify custom intake tubes to fit the engine as well as my 4’s cowling. 2 options you do have without doing any...
Forum: Traditional Aircraft Engines 04-13-2021, 03:34 PM
Replies: 22
Views: 4,559
Posted By theduff
Expert Opinion

+1 Like I said in the first post AEA of Dallas (Aircraft Engines & Accessory Co). Both do excellent work but Iíve found AEA a little more down home. Paul is a gentleman and goes out of his way to...
Forum: Traditional Aircraft Engines 04-13-2021, 02:12 PM
Replies: 22
Views: 4,559
Posted By theduff
Welding is a no no !

No Aircraft crankshaft should ever be welded. Itís specifically not allowed on certified crankshafts. Iíve heard of Airboat guys doing some welding on cranks with mixed results. The thrust face is a...
Forum: RV General Discussion/News 04-12-2021, 01:56 PM
Replies: 9
Views: 2,125
Posted By theduff
Lifeís Passions

+1 on RV-8ch comments. Iím 63 and have my first Grandson coming in July. Flying is great but itís not everything.
Forum: Traditional Aircraft Engines 04-12-2021, 01:48 PM
Replies: 6
Views: 650
Posted By theduff
Dyno Data

I was just a spectator not a participant, so no documentation. I believe your sump is the one with unequal length tubes and the Carb located aft on the sump instead of in the center ? The early 320ís...
Forum: Traditional Aircraft Engines 04-12-2021, 11:29 AM
Replies: 6
Views: 650
Posted By theduff
Sump Insert

We made our own per the dimensions from the SB. The project that I built the engine for has languished and hasnít flown yet. I know from dyno testing at a friends shop that it does work and they are...
Forum: Traditional Aircraft Engines 04-12-2021, 11:21 AM
Replies: 6
Views: 650
Posted By theduff
SB 258

Send me your email address and Iíll send you a bad copy of a 1959 Service Bulletin !
Forum: Traditional Aircraft Engines 04-11-2021, 01:53 PM
Replies: 22
Views: 4,559
Posted By theduff
Pitted Thrust Face

Pretty bad. Definitely not airworthy in the Certified world. That is the thrust surface for a tractor configured engine, the prop is always pulling the crank against that surface. Having said that I...
Forum: RV Ongoing Maintenance Issues 04-05-2021, 11:09 AM
Replies: 20
Views: 3,580
Posted By theduff
Leaking Exhaust Valve in Cylinder #3

Cylinder #3 seems to be the hardest cylinder on exhaust valves and guides due to heat and restricted top end oil flow on that side of the engine. I would look carefully at the valve as it seats and...
Forum: RV-4 03-26-2021, 07:55 AM
Replies: 13
Views: 3,789
Posted By theduff
Any idea how much heavier the long gear leg and...

Any idea how much heavier the long gear leg and motor mount are ?
Forum: RV-4 03-18-2021, 11:07 AM
Replies: 9
Views: 1,838
Posted By theduff
Air Inlet

Wild *** Guess: Could it be the air inlet for a rear mounted fuel injector ?
Forum: RV-4 03-14-2021, 07:54 AM
Replies: 4
Views: 969
Posted By theduff
Crow Harness

I run the Crows in my 4 and love them. I took my 4 apart at a 1000 hrs to refresh and update it and the Crow harnessís were one of many upgradesI did. They are clearly superior to the stock Vans...
Forum: RV-4 03-12-2021, 08:21 AM
Replies: 2
Views: 811
Posted By theduff
Forward Baggage

I use a motorcycle tank bag. They come with non slip rubber on the bottom to prevent scratching the motorcycle tanks paint. Mine doesnít move in flight even in hard turbulence.
Forum: Electronic Ignition Systems 03-04-2021, 09:04 AM
Replies: 26
Views: 5,698
Posted By theduff
GM coils.

I have a set I got from Klaus sometime back but never used them. If you get me an email address Iíll send you some pics.
Duff
Forum: Autopilots 01-22-2021, 11:51 AM
Replies: 24
Views: 6,010
Posted By theduff
xCruze 110 Auto-Pilots

Hey Andrew,
I see you fly a 4 as well..wonderful plane and not sure if it should have an auto-pilot but on those Oshkosh trips from the west coast it would be nice. I called Bendix-King this week and...
Forum: Traditional Aircraft Engines 01-06-2021, 08:12 AM
Replies: 11
Views: 2,670
Posted By theduff
Roller Tappets

To answer your question yes. The case can be machined for roller tappets by LyCon who have a C & C program for doing it. Iíve had several cases converted. To avoid welding around the tappet bosses on...
Forum: Traditional Aircraft Engines 01-05-2021, 02:46 PM
Replies: 11
Views: 2,670
Posted By theduff
DC coated lifters

Ditto on what Larry said. Jessie is fair at Colorado Airparts.
Forum: Propellers 12-31-2020, 12:26 PM
Replies: 10
Views: 3,023
Posted By theduff
Wood Props

I have and flown behind a metal FP as well as a variety of wood props. Warnkeís both Bernie and Margy, Pacesetter, Sterba and Performance Propellers both Clark and Frankís versions. I can say that...
Forum: Traditional Aircraft Engines 12-30-2020, 11:55 AM
Replies: 4
Views: 1,645
Posted By theduff
Oil transfer tube

Oh boy, not good. I can tell you a few things but maybe others will chime in with better news. The oil transfer tube is not made/sold as a separate part. A new one can be machined but it must be...
Forum: Traditional Aircraft Engines 12-27-2020, 02:41 PM
Replies: 17
Views: 5,394
Posted By theduff
Orfice Size

Gil knows the manufacturer’s recommendations over rule the the AC cause he said so in a similar thread in 2017 ! Lycoming Service Instruction specifically calls out the .040” orifice for all their...
Forum: Traditional Aircraft Engines 12-15-2020, 11:06 AM
Replies: 9
Views: 2,826
Posted By theduff
Looks like the corners of the teeth have been...

Looks like the corners of the teeth have been ground on. I would try the shim on the starter. I have one if you have trouble rustling one up.
Forum: RV General Discussion/News 12-15-2020, 11:00 AM
Replies: 31
Views: 5,700
Posted By theduff
Tosten

Actually a tip up 6 😎!
+1 on Kevin !!
Forum: RV-6/6A 12-14-2020, 08:43 AM
Replies: 6
Views: 2,160
Posted By theduff
Fuel Tank sending units

I upgraded the tanks in my 4 several years ago that had the original SW units and the mounting holes matched up. The new ones come with a sketch and dimensions for bending and mounting the float on...
Forum: RV General Discussion/News 12-09-2020, 09:23 AM
Replies: 7
Views: 2,791
Posted By theduff
Non ferrous metal

It’s not unusual to find small amounts of non ferrous metal,ie a match head, In the early running of engines that have been overhauled.The trend is your friend here though. Are you still finding it...
Forum: RV General Discussion/News 12-08-2020, 12:57 PM
Replies: 10
Views: 1,733
Posted By theduff
122 to 149 tooth ring gear

Unfortunately no. The widths are different. You should be able to find a 149 tooth flywheel ( support assembly) used here on VAF or Ebay for around $300.
Sorry reread your post and see your getting...
Showing results 1 to 64 of 164

 
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