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Search: Posts Made By: lr172
Forum: RV Ongoing Maintenance Issues Yesterday, 07:22 AM
Replies: 11
Views: 666
Posted By lr172
I just helped a guy with a 6A address this. His...

I just helped a guy with a 6A address this. His had a heavy left wing. P/O had put a trim tab on and lowered the left flap almost an inch and it was still wing heavy. After addressing the issue...
Forum: Traditional Aircraft Engines 04-21-2021, 09:48 AM
Replies: 4
Views: 271
Posted By lr172
clean surface with alcohol and apply blue masking...

clean surface with alcohol and apply blue masking tape. Cheap, effective and no shipping charges.
Forum: RV General Discussion/News 04-21-2021, 09:32 AM
Replies: 10
Views: 572
Posted By lr172
another vote for bearing replacement here. I had...

another vote for bearing replacement here. I had a modern drill press start wobbling after a year. Crappy machining on the quill bore in my case. Replaced with a 70 year old rockwell that is built...
Forum: Interiors 04-21-2021, 09:20 AM
Replies: 35
Views: 7,758
Posted By lr172
This will vary a bit. I have heated seats and...

This will vary a bit. I have heated seats and didn't use them much until I upgraded to oregon aero cushions. I am 6' and sit with my head only and inch or so from the canopy. The comfor foam...
Forum: Electronic Ignition Systems 04-19-2021, 02:15 PM
Replies: 31
Views: 5,851
Posted By lr172
A bit of red loctite will keep them in place very...

A bit of red loctite will keep them in place very nicely. Just a little bit and avoid getting it on anything but the threads to have a low resistance connection at the base.
Forum: RV General Discussion/News 04-19-2021, 01:44 PM
Replies: 26
Views: 3,260
Posted By lr172
With a contrarian view here, why should average...

With a contrarian view here, why should average guys win awards? Kind of like my young children's soccer teams. Everyone gets an award so no one feels bad. Pretty hard to build excellence that...
Forum: RV-14 04-19-2021, 11:13 AM
Replies: 11
Views: 846
Posted By lr172
Mikes logic is that sticking valves are caused by...

Mikes logic is that sticking valves are caused by lead deposits on the valve stem. This flies completely in the face of the standard remediation method for sticking valves, which is too remove...
Forum: RV-10 04-19-2021, 10:42 AM
Replies: 8
Views: 907
Posted By lr172
I bought a roll of the Gila window tint material...

I bought a roll of the Gila window tint material (removable / 20% VLT) and installed on both the rear windows. Works well, but the optical clarity is not good enough for the front windows. Because...
Forum: Safety 04-18-2021, 11:23 AM
Replies: 26
Views: 1,935
Posted By lr172
See that now. Misunderstood the pics.

See that now. Misunderstood the pics.
Forum: RV-7/7A 04-18-2021, 06:53 AM
Replies: 8
Views: 257
Posted By lr172
That is a pretty big swing. I was getting...

That is a pretty big swing. I was getting oscillation of about an inch before installing a restrictor, but never 3" swings. If you cannot track it down with the other ideas mentioned, I would...
Forum: Safety 04-18-2021, 06:35 AM
Replies: 26
Views: 1,935
Posted By lr172
The plans also appear to call for the attachment...

The plans also appear to call for the attachment in the lowest hole, not the top hole. They probably specified this for the reason you experienced.
Forum: RV General Discussion/News 04-17-2021, 10:19 AM
Replies: 32
Views: 1,794
Posted By lr172
What drives you to that conclusion? You said you...

What drives you to that conclusion? You said you moved one full tooth from the TDC line. By my math, that is ~2.5 degrees (149/360) or 3* if you have a 122 tooth gear. If you didn't accurately...
Forum: California 04-17-2021, 09:06 AM
Replies: 6
Views: 437
Posted By lr172
NP. I can make them for use with through bolts,...

NP. I can make them for use with through bolts, so you don't need a press. I saw that the amazon ones require a press and hence the reason for the offer. A through bolt should work fine for...
Forum: RV Ongoing Maintenance Issues 04-17-2021, 08:24 AM
Replies: 2
Views: 190
Posted By lr172
Is this an S series governor? When set up...

Is this an S series governor? When set up properly, the return spring should be applying resistance to ANY movement of the governor arm off the fine pitch RPM stop. I believe it is set up this way...
Forum: Glass Cockpit 04-17-2021, 08:16 AM
Replies: 15
Views: 1,655
Posted By lr172
same here, but 6 years and 750 hours. I would...

same here, but 6 years and 750 hours. I would consider a full re-wire before swapping components.

Larry
Forum: Electrical Systems 04-17-2021, 06:56 AM
Replies: 23
Views: 925
Posted By lr172
I chased a problem like this for a while. Turned...

I chased a problem like this for a while. Turned out the screw holding the ring terminal on the back of the field breaker had become loose and was adding resistance to the sense circuit, thus...
Forum: RV General Discussion/News 04-17-2021, 06:48 AM
Replies: 32
Views: 1,794
Posted By lr172
Assuming this is a new condition, I would be...

Assuming this is a new condition, I would be looking at a timing error or inop condition on one of the Pmags. 1550 LOP seems high to me, though I understand that each setup is different. Not a...
Forum: California 04-16-2021, 07:09 AM
Replies: 6
Views: 437
Posted By lr172
I don't have any but would be willing to make a...

I don't have any but would be willing to make a set for a reasonable fee. I have been doing more free lance machining in retirement.

Larry
Forum: Traditional Aircraft Engines 04-15-2021, 11:48 AM
Replies: 3
Views: 272
Posted By lr172
The cold air sumps, I believe, were developed to...

The cold air sumps, I believe, were developed to allow folks to extract a bit more HP, by eliminatng the heating. I suspect that they have a larger plenum area and this is the primary reason for the...
Forum: RV General Discussion/News 04-15-2021, 11:45 AM
Replies: 17
Views: 748
Posted By lr172
I had that issue on the 6. On the 10, I made a...

I had that issue on the 6. On the 10, I made a custom mount that leaves the ipad very close to the inst. panel. WIth this approach, the dash overlap shields the ipad from most sunlight and I have...
Forum: Autopilots 04-15-2021, 11:36 AM
Replies: 4
Views: 334
Posted By lr172
best to read the manuals for guidance. The...

best to read the manuals for guidance. The tracking sensitivity is set by both the roll servo gain AND a lateral tracking gain that I cannot remeber the name of. They need a bit of finessing to get...
Forum: Traditional Aircraft Engines 04-14-2021, 01:24 PM
Replies: 3
Views: 272
Posted By lr172
For a long time, carb'ed auto engines would run...

For a long time, carb'ed auto engines would run an exhaust passage through the intake manifold with the purpose of heating the air fuel mixture after the carb. The advantage is that heating helps to...
Forum: Fuel Injection Systems 04-14-2021, 01:18 PM
Replies: 7
Views: 290
Posted By lr172
Pretty much every car produced in the last 30...

Pretty much every car produced in the last 30 years has a fuel return setup similar to what you describe. Clearly there are no issues with this type of arrangement, include heat related problems. ...
Forum: Autopilots 04-13-2021, 07:33 AM
Replies: 6
Views: 456
Posted By lr172
They give you a button in config mode that has...

They give you a button in config mode that has the AP actuate trim in different directions to confirm that the orientation matches your wiring. There is also a setting to reverse the orientation if...
Forum: Traditional Aircraft Engines 04-12-2021, 11:40 AM
Replies: 33
Views: 3,075
Posted By lr172
If he is any good, he would have measured it...

If he is any good, he would have measured it before making that statement.
Forum: Autopilots 04-12-2021, 11:22 AM
Replies: 4
Views: 305
Posted By lr172
Not a CAN bus. Dynon uses an RS-44X (can't...

Not a CAN bus. Dynon uses an RS-44X (can't remember that number ) protocol and it requires that the A & B pairs be twisted. similar protocol as that which ARINC uses. I do not recommend going...
Forum: RV-10 04-12-2021, 08:46 AM
Replies: 6
Views: 635
Posted By lr172
It is possible that your stops are allowing more...

It is possible that your stops are allowing more travel than required. I would ensure that full right stick against your thigh delivers the minimum deflection angle called out in the plans. If that...
Forum: Traditional Aircraft Engines 04-12-2021, 08:28 AM
Replies: 6
Views: 229
Posted By lr172
Pretty sure there are two versions of the sump...

Pretty sure there are two versions of the sump with different ID's. the -12 and -32 carbs had different throat size and different sumps to match with them.

Larry
Forum: Traditional Aircraft Engines 04-12-2021, 08:19 AM
Replies: 33
Views: 3,075
Posted By lr172
The standard is 200 ROP when full rich, WOT at...

The standard is 200 ROP when full rich, WOT at sea level. It is nice to have that margin for detonation prevention on Take off. You should be more worried about WOT SL than at cruise, as that is...
Forum: RV Ongoing Maintenance Issues 04-12-2021, 08:02 AM
Replies: 20
Views: 1,854
Posted By lr172
Looks like at least 3-5 thou of deposits on the...

Looks like at least 3-5 thou of deposits on the seat and therefore 3-5 thou of clearance. If the valve was touching the seat in that spot, the deposits wouldn't be there or at least would be shinny,...
Forum: Traditional Aircraft Engines 04-12-2021, 07:43 AM
Replies: 20
Views: 2,164
Posted By lr172
+1 As long as the pitting doesn't extend into...

+1

As long as the pitting doesn't extend into the radius area, it seems the likelihood of catastrophic failure is pretty low. I believe it is a low stress area. That said, I don't think I would...
Forum: RV-10 04-12-2021, 07:12 AM
Replies: 23
Views: 2,204
Posted By lr172
I am 6' / 200 and have a home made arm rest that...

I am 6' / 200 and have a home made arm rest that is similar to the aerosport. It does nothing to make the cabin feel less roomy, It is great for storage and love having a place to rest my arm. It...
Forum: RV-9/9A 04-10-2021, 12:14 PM
Replies: 19
Views: 1,684
Posted By lr172
That's where mine is, though I still havent used...

That's where mine is, though I still havent used it yet.
Forum: Traditional Aircraft Engines 04-10-2021, 12:09 PM
Replies: 15
Views: 1,186
Posted By lr172
a minute or two after shutdown, the fuel in the...

a minute or two after shutdown, the fuel in the spider lines boils and dumps the fuel in the cylinders; This is why it needs a special procedure. Quite unikely you can get a large enough fan in...
Forum: RV-10 04-09-2021, 11:21 AM
Replies: 5
Views: 591
Posted By lr172
Oh, the sweet memories of the panel upgrade on my...

Oh, the sweet memories of the panel upgrade on my 6 :eek:
Forum: RV-6/6A 04-09-2021, 11:00 AM
Replies: 4
Views: 278
Posted By lr172
I chose the RV-7 stiffner kit. The RV-6 plans...

I chose the RV-7 stiffner kit. The RV-6 plans include a process and pics of using fiberglass to create a reinforcement. This, or similar approach, would seem the best route for a painted airplane
Forum: RV General Discussion/News 04-08-2021, 12:15 PM
Replies: 20
Views: 758
Posted By lr172
+1 I missed the part about the mix. No real...

+1

I missed the part about the mix. No real mogas experience here to help. Though I would expect that 50% avgas would eliminate any vapor lock issues, especially with spring temps vs summer. Have...
Forum: RV-7/7A 04-08-2021, 11:48 AM
Replies: 14
Views: 594
Posted By lr172
You might be surprised how high a percentage of...

You might be surprised how high a percentage of weight is carried above your hips (your organs are quite heavy) and your lower seat cushion must carry it all if not reclined; mostly concentrated in...
Forum: RV-7/7A 04-08-2021, 11:38 AM
Replies: 14
Views: 594
Posted By lr172
I just step on them. Just can't see how my shoe...

I just step on them. Just can't see how my shoe is any different than the bottom of my pants or the back of my shirt that will be in contact with the seat cover for hours. Any liguid or debris will...
Forum: RV General Discussion/News 04-08-2021, 11:33 AM
Replies: 20
Views: 758
Posted By lr172
sounds like a failing fuel pump. I would not...

sounds like a failing fuel pump. I would not test fate with another flight before either replacing it or finding an alternate reason that the mechanical pump won't work but the boost pump does, like...
Forum: RV Building Tips/Techniques 04-08-2021, 09:26 AM
Replies: 18
Views: 1,769
Posted By lr172
If I were to go to that level of testing, I would...

If I were to go to that level of testing, I would plumb in a 1/4" NPT fitting and apply an air hose connection. Pump up the regulator to 50-60 PSI and use soapy water on each connection. Could also...
Forum: RV-9/9A 04-08-2021, 07:56 AM
Replies: 43
Views: 12,278
Posted By lr172
The plans for the 6 have you cut a hole in the...

The plans for the 6 have you cut a hole in the firewall to get a socket on the nut. You then make a small cover and adhere it with proseal/RTV or pop rivet it on. As Don mentioned, you probably can...
Forum: RV Ongoing Maintenance Issues 04-08-2021, 07:51 AM
Replies: 14
Views: 1,933
Posted By lr172
I get a lot more than 100 hours on both the Matco...

I get a lot more than 100 hours on both the Matco and Rapcos. First suggestion would be to experiment with using rudder only in taxi when possible. I also retract flaps after touchdown and use more...
Forum: RV General Discussion/News 04-08-2021, 07:04 AM
Replies: 19
Views: 4,060
Posted By lr172
From my research, bearing classes come from the...

From my research, bearing classes come from the post production measurements. All of the classes are built on the same production run, but seperated based upon dimensional tolerences. The higher...
Forum: RV-10 04-07-2021, 08:25 AM
Replies: 51
Views: 13,870
Posted By lr172
I don't buy that. Don't see how the trim system...

I don't buy that. Don't see how the trim system puts more load on the heim bearing than pilot induced forces during flying. Trim forces are pretty light compared to forces induced via the control...
Forum: RV Ongoing Maintenance Issues 04-05-2021, 10:33 AM
Replies: 11
Views: 682
Posted By lr172
My read is that you have a leak in the left...

My read is that you have a leak in the left master cylinder(s). If you can traditional bleed from the right but not the left, it implies that the stat-o-seal or other o-ing in the left M/C is...
Forum: Traditional Aircraft Engines 04-05-2021, 10:22 AM
Replies: 33
Views: 3,075
Posted By lr172
The bowl vent is not exposed to ram air. If it...

The bowl vent is not exposed to ram air. If it was, the excess pressure on top of the fuel in the bowl would cause a rich condition, not lean. The same way that higher float settings cause rich...
Forum: Traditional Aircraft Engines 04-05-2021, 09:06 AM
Replies: 33
Views: 3,075
Posted By lr172
WOW. 50* ROP at 8000 with full rich is quite...

WOW. 50* ROP at 8000 with full rich is quite lean. seems a jet change is in order, assuming you have confirmed that the mixture cable installation is allowing the arm on the carb to go full travel....
Forum: RV Ongoing Maintenance Issues 04-05-2021, 08:52 AM
Replies: 20
Views: 1,854
Posted By lr172
I would not lap a valve until I knew why it was...

I would not lap a valve until I knew why it was leaking. Several reasons for a leaking exh valve and not all can be resolved with simply lapping the interface.
Forum: Traditional Aircraft Engines 04-04-2021, 12:50 PM
Replies: 44
Views: 3,754
Posted By lr172
Piston wall clearance on a Lyc is .0025-004, if I...

Piston wall clearance on a Lyc is .0025-004, if I remember correctly. Exactly the same as an old school Chevy small block. Low end on the ring gap is also the same as a small block (around .025),...
Forum: RV Ongoing Maintenance Issues 04-04-2021, 07:31 AM
Replies: 6
Views: 825
Posted By lr172
polyester filler is the standard in auto body...

polyester filler is the standard in auto body repair and has been used on millions of repairs. Yes it shrinks a very small amount in the first 30-90 days and is then VERY stable over time.
What is...
Forum: Traditional Aircraft Engines 04-03-2021, 10:11 AM
Replies: 7
Views: 366
Posted By lr172
given the coincidence with noise in the headset,...

given the coincidence with noise in the headset, I would be looking for an issue with grounding or something throwing noise on the power bus or ground. EGT sensor use a VERY low current and can't...
Forum: RV General Discussion/News 04-03-2021, 08:39 AM
Replies: 62
Views: 5,260
Posted By lr172
I'm in with one guest.

I'm in with one guest.
Forum: RV General Discussion/News 04-03-2021, 08:37 AM
Replies: 40
Views: 2,007
Posted By lr172
Totally unrelated. The FAA prohibits commercial...

Totally unrelated. The FAA prohibits commercial activity or use (pay for service delivered). That has nothing to do with ownership.
Forum: Traditional Aircraft Engines 04-03-2021, 08:21 AM
Replies: 33
Views: 3,075
Posted By lr172
9.5 GPH at 7500' is right around or a bit higher...

9.5 GPH at 7500' is right around or a bit higher than max power (approx 75-100 ROP). I routinely run 8 GPH at 8000', which is around 20-40 LOP. Rejetting is not your answer, at least at cruise. ...
Forum: RV General Discussion/News 04-03-2021, 08:13 AM
Replies: 2
Views: 423
Posted By lr172
I am guessing that you did not configure the...

I am guessing that you did not configure the engine parameters correctly in config mode, assuming that your map reads near barometric pressure with the engine off.
Forum: RV-14 04-03-2021, 08:01 AM
Replies: 7
Views: 454
Posted By lr172
I got burned doing one of my tanks. Somewhere...

I got burned doing one of my tanks. Somewhere during the process, you have to hit enter twice for the data to be saved. Can't say whether or not the calibration values were there, but I was able to...
Forum: RV General Discussion/News 04-02-2021, 08:35 AM
Replies: 40
Views: 2,007
Posted By lr172
Where do you find one? I have a substantial...

Where do you find one? I have a substantial umbrella policy (auto, home, etc.), but it specifically excludes aviation and thought that was pretty standard from most insurers.

Larry
Forum: RV General Discussion/News 04-01-2021, 11:43 AM
Replies: 40
Views: 2,007
Posted By lr172
I partially agree with the above. Though I still...

I partially agree with the above. Though I still believe that they would sue the pilot for negligence, if he had substantial assets or good insurance. However, the OP clearly stated that he is not...
Forum: RV General Discussion/News 04-01-2021, 11:13 AM
Replies: 40
Views: 2,007
Posted By lr172
Sorry, but don't buy that. If I slam my plane...

Sorry, but don't buy that. If I slam my plane into a house, I, as the pilot, am liable for the damages created. Sure, they will try to also sue the aircraft owner, if other than me, but that...
Forum: RV General Discussion/News 04-01-2021, 08:42 AM
Replies: 40
Views: 2,007
Posted By lr172
Other than taxes, I can't think of one. ...

Other than taxes, I can't think of one. Liability is on the pilot, not the aircraft, so don't see how it helps there.

Larry
Forum: RV Ongoing Maintenance Issues 04-01-2021, 07:53 AM
Replies: 13
Views: 922
Posted By lr172
Neat Idea. I am going to make one of those...

Neat Idea. I am going to make one of those today! Definitely beats holding a bag under the filter. Curious if you need to punch a hold in the top to get it to drain. I believe that the auto...
Forum: RV Ongoing Maintenance Issues 04-01-2021, 07:19 AM
Replies: 13
Views: 1,004
Posted By lr172
Another opinion: I believe that the black carbon...

Another opinion:

I believe that the black carbon in the guides is coked (i.e. burned / oxidized) oil. The lycoming suffers from poor oil flow qty to the valve area and exhaust valves get a good...
Forum: Traditional Aircraft Engines 03-31-2021, 07:56 AM
Replies: 9
Views: 480
Posted By lr172
When I did my 540 overhaul a year ago and had to...

When I did my 540 overhaul a year ago and had to buy all new injuectors, Kyle recommend .025's for my setup.
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