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Search: Posts Made By: lr172
Forum: RV Ongoing Maintenance Issues Yesterday, 08:40 PM
Replies: 10
Views: 434
Posted By lr172
Good point here. Many often forget that the...

Good point here.

Many often forget that the warmer the air gets, the less oxygen there is in given volume of air. Therefore, without temperature compensation, which our systems don't have, your air...
Forum: Traditional Aircraft Engines Yesterday, 08:11 AM
Replies: 17
Views: 1,121
Posted By lr172
I am in the camp that a few flights must be done...

I am in the camp that a few flights must be done without fairings to establish a baseline for the yaw imposed by the raw airframe at cruise speed. This is then compared to the yaw imposed with the...
Forum: Traditional Aircraft Engines Yesterday, 07:53 AM
Replies: 3
Views: 145
Posted By lr172
don't have that engine. However, quite confident...

don't have that engine. However, quite confident that is it. It is in the right location and has a built in restrictor. Would be very surprised if it was anything but your oil pressure tap. Can't...
Forum: Traditional Aircraft Engines 07-08-2020, 09:22 PM
Replies: 7
Views: 434
Posted By lr172
assuming a single terminal style sensor, a bad...

assuming a single terminal style sensor, a bad ground from the engine to the firewall is possible, as is a bad crimp at either end of the wire going to the sensor. With a poor ground between the...
Forum: Traditional Aircraft Engines 07-08-2020, 11:14 AM
Replies: 17
Views: 1,121
Posted By lr172
Many have this dillema. I did limited ground...

Many have this dillema. I did limited ground runs (30 minutes per Mahlons procedure, as I overhauled myself and it had no test stand time). First flight, I orbitted the controlled airport (always...
Forum: Traditional Aircraft Engines 07-07-2020, 10:30 AM
Replies: 12
Views: 710
Posted By lr172
CHTs do not seem all that unbalanced. My #6 is...

CHTs do not seem all that unbalanced. My #6 is 30* hotter than others on my 540 and my #4 is 20* hotter than others on my 320. I would expect EGTs to drop in those scenarios (with a carb that is...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 07-07-2020, 07:26 AM
Replies: 10
Views: 1,158
Posted By lr172
Not always. The controller board has a dedicated...

Not always. The controller board has a dedicated pos and neg connection to each strobe board. It would not be surprising that a connection from the dedicated ground lead to a common ground could...
Forum: Traditional Aircraft Engines 07-07-2020, 07:03 AM
Replies: 12
Views: 710
Posted By lr172
450 at pattern altitude is pretty high. Did you...

450 at pattern altitude is pretty high. Did you confirm that all CHT's now read the same ambient before start up? Do they rise in a similar manner during warm up? Do you have a CS prop? If so, 15...
Forum: Traditional Aircraft Engines 07-07-2020, 07:00 AM
Replies: 12
Views: 710
Posted By lr172
What is the RPM/MAP before and after the...

What is the RPM/MAP before and after the "throttle down?"
Forum: Glass Cockpit 07-06-2020, 10:16 AM
Replies: 6
Views: 527
Posted By lr172
+1 If you were doing 106 kts and commanded a 120...

+1

If you were doing 106 kts and commanded a 120 kt IAS climb, you must expect the A/P to follow that instruction by dropping the nose to increase the airspeed and then start pulling up the nose...
Forum: VAF Classifieds (posts in here deleted after 30 days) 07-06-2020, 08:34 AM
Replies: 5
Views: 275
Posted By lr172
I have one as well. I am the guy that posted a...

I have one as well. I am the guy that posted a few mo9nths ago.

PM coming
Forum: Midwest 07-06-2020, 08:09 AM
Replies: 9
Views: 652
Posted By lr172
Cheapest hanger at Dupage is now $460, so that is...

Cheapest hanger at Dupage is now $460, so that is not really out of line for a "close in" airport. Schaumburg still has two rows of old hangers that go for $260. However, you need to sit on the...
Forum: Safety 07-05-2020, 12:03 PM
Replies: 24
Views: 4,363
Posted By lr172
I have taken off twice with the tipper canopy...

I have taken off twice with the tipper canopy unlatched (early in my 6A experience). Both times I got to around 120 MPH in climb before noticing. The canopy lifted about 1" from the closed position...
Forum: Propellers 07-04-2020, 08:10 AM
Replies: 29
Views: 2,698
Posted By lr172
Sorry, I have never really measured static RPM. ...

Sorry, I have never really measured static RPM. I got here by chance. I bought a used prop from an RV-9 owner (gen 2 set up for a 320). I talked with Craig Catto about a re-pitch and could...
Forum: RV Building Tips/Techniques 07-03-2020, 07:34 AM
Replies: 6
Views: 386
Posted By lr172
You want the longitudinal axis of the fairing to...

You want the longitudinal axis of the fairing to align with the nose wheel longitudinal axis. The nose wheel does not freely pivot in the air; at least when the fork attach nut is torque'd properly...
Forum: Glass Cockpit 07-03-2020, 07:11 AM
Replies: 59
Views: 7,122
Posted By lr172
I don't think the G5 uses the GSU25 attitude...

I don't think the G5 uses the GSU25 attitude data. Garmin has stated that one way to identify an error is to compare the G5 to the G3X attitude. This implies that the G5 is always using it's own...
Forum: Propellers 07-02-2020, 06:33 AM
Replies: 29
Views: 2,698
Posted By lr172
That can be addressed in other ways. I have a...

That can be addressed in other ways. I have a catto and also have a 19 lb crush plate that gives me a full 1" of aft CG increase. inexpensive and low maintenance. Also, I am a bit under pitched. ...
Forum: RV-10 07-01-2020, 08:05 AM
Replies: 8
Views: 847
Posted By lr172
same here. Early vintage kit.

same here. Early vintage kit.
Forum: RV-14 06-30-2020, 03:18 PM
Replies: 22
Views: 3,583
Posted By lr172
There is no problem doing this. the chemical...

There is no problem doing this. the chemical composition of the drain material in the separator is identical to the composition inside the engine (just converted from a gas to a liquid or small...
Forum: RV-10 06-30-2020, 01:45 PM
Replies: 5
Views: 415
Posted By lr172
I would consider making a tool/appicator to apply...

I would consider making a tool/appicator to apply proseal around the internal AN fitting / line (inside the takk) to stop the leak. I suspect that with an inspection mirror and the right shapped...
Forum: Primers 06-30-2020, 12:25 PM
Replies: 11
Views: 842
Posted By lr172
respirators rated for organic solvents do NOT...

respirators rated for organic solvents do NOT block or protect from isocyanates. That is the really nasty stuff in 2 part urethane clears/single stage and epoxy primers. organic solvents just give...
Forum: RV General Discussion/News 06-30-2020, 09:03 AM
Replies: 2
Views: 295
Posted By lr172
a benchtop tester doesn't simulate high altitude...

a benchtop tester doesn't simulate high altitude conditions. High resistance in the ignition circuit will limit the conditions under which the plug can fire strongly enough to light a charge. Lean...
Forum: Traditional Aircraft Engines 06-30-2020, 08:52 AM
Replies: 15
Views: 1,828
Posted By lr172
Oil rings do not affect compression readings,...

Oil rings do not affect compression readings, cold hot or otherwise.
Forum: Traditional Aircraft Engines 06-30-2020, 08:46 AM
Replies: 15
Views: 1,828
Posted By lr172
Yes. the leakage is through the ring gaps and...

Yes. the leakage is through the ring gaps and sometimes between the rings/land interface. You always have a decent amount of air leakage past the rings during a leak down test. This is why they...
Forum: Reviews 06-29-2020, 09:17 PM
Replies: 9
Views: 519
Posted By lr172
That rubbery stufff is just a coating. Keep...

That rubbery stufff is just a coating. Keep wiping with the alcohol and it will come off completely, lleaving the shiny plastic. That will be the end of the problem.
Forum: RV-8/8A 06-27-2020, 10:14 PM
Replies: 15
Views: 1,540
Posted By lr172
We were flying at 14K yesterday over nebraska and...

We were flying at 14K yesterday over nebraska and colorado. Oat was 33 - 35.

Larry
Forum: Electronic Ignition Systems 06-26-2020, 10:27 PM
Replies: 4
Views: 344
Posted By lr172
My eis happily accepts a 12 volt tach signal from...

My eis happily accepts a 12 volt tach signal from my EI. Not sure if it could accommodate a 5 volt signal.
Forum: RV-10 06-23-2020, 09:18 PM
Replies: 4
Views: 541
Posted By lr172
I vaguely remember a max of two washers. After...

I vaguely remember a max of two washers. After that they recommend replacing doughnuts. I think it is always four doughnuts.


Larry
Forum: Midwest 06-23-2020, 09:14 PM
Replies: 9
Views: 652
Posted By lr172
many airports in Chicago. What town are you...

many airports in Chicago. What town are you moving to?
Forum: Glass Cockpit 06-23-2020, 09:07 PM
Replies: 7
Views: 566
Posted By lr172
I have my 10" GRT slightly right of my centerline...

I have my 10" GRT slightly right of my centerline and the mini is immediately to the left high on the panel. You almost never need to swap view between the PFD and radio or GPS navigator. However,...
Forum: RV General Discussion/News 06-23-2020, 10:56 AM
Replies: 19
Views: 1,515
Posted By lr172
as long as the average joe shy's away from damage...

as long as the average joe shy's away from damage history, there will be a strong incentive for sellers to hide and lie about previous damage. I personally would rather be informed and balance the...
Forum: Traditional Aircraft Engines 06-21-2020, 12:22 PM
Replies: 12
Views: 1,486
Posted By lr172
I am open to new thinking in this area, but my...

I am open to new thinking in this area, but my research indicated that combustion gas temps above 800-1000* leave the lead bromites in aerosol form and carried away with the exhaust. Lead build ups...
Forum: Traditional Aircraft Engines 06-21-2020, 11:00 AM
Replies: 12
Views: 1,486
Posted By lr172
That defies logic. Valves stick because of...

That defies logic. Valves stick because of deposit build up in the valve guide. In this case, the deposits are coked oil which only occurs due to excess heat, beyond the oil's critical oxidation...
Forum: RV Ongoing Maintenance Issues 06-21-2020, 07:32 AM
Replies: 10
Views: 949
Posted By lr172
I had a similar problem with EGTs on my new 10. ...

I had a similar problem with EGTs on my new 10. I had bundled the EGT wires with the ignition wires for a short distance. Unbundling solved the problem. Symptoms were a dead giveaway, as the...
Forum: RV Ongoing Maintenance Issues 06-18-2020, 08:17 AM
Replies: 4
Views: 799
Posted By lr172
Is the air upstream or downstream from the...

Is the air upstream or downstream from the cylinder? I struggled with getting air upstream of the MC's and it required rebuilding the MC's, as the rubber seals dried out from age.

Larry
Forum: Traditional Aircraft Engines 06-17-2020, 08:04 AM
Replies: 11
Views: 977
Posted By lr172
I have pulled probes with no issues, but they had...

I have pulled probes with no issues, but they had only been installed for a year or two. I wouldn't be overly concerned, but would exercise caution if more than moderate force is required to get the...
Forum: ADS-B 06-17-2020, 07:49 AM
Replies: 13
Views: 2,616
Posted By lr172
It is important to note that the echo will only...

It is important to note that the echo will only sniff the new code on a transmission and those only occur after an interrogation. In less populated areas, there can be some time between...
Forum: Traditional Aircraft Engines 06-17-2020, 07:32 AM
Replies: 21
Views: 2,696
Posted By lr172
I have 6 of them in the garage. More than...

I have 6 of them in the garage. More than willing to donate one for your experimentation. Your knowledgeable input is always appreciated. Let me know the next time you are up my way.

Larry
Forum: Painting your RV 06-17-2020, 07:07 AM
Replies: 7
Views: 632
Posted By lr172
Just be cautious, as they make a vynal with a low...

Just be cautious, as they make a vynal with a low tack adhesive and that should remove ok. The regular vynal will likely pull off your base coat after 24 hours if you don't use a lot of heat.

I...
Forum: RV Ongoing Maintenance Issues 06-15-2020, 11:21 PM
Replies: 5
Views: 490
Posted By lr172
I made a couple sets for my 6A from a chunk of...

I made a couple sets for my 6A from a chunk of plastic cutting board. Used drill press and bandsaw. Use 4 screws instead of 2
Forum: Electrical Systems 06-15-2020, 04:19 PM
Replies: 15
Views: 1,198
Posted By lr172
I will defer to those more experienced. I have...

I will defer to those more experienced. I have certainly seen the behavior you mention with my home AC generator, but thought that these type of devices were different (they have a governor to...
Forum: Electrical Systems 06-15-2020, 11:12 AM
Replies: 15
Views: 1,198
Posted By lr172
a permanent magnet alternator (e.g. SD-8)...

a permanent magnet alternator (e.g. SD-8) doesn't coast. It takes the same amount of energy to rotate the alt regardless of the amount of wattage it is supplying via that regulator (it just throws...
Forum: RV General Discussion/News 06-15-2020, 07:25 AM
Replies: 18
Views: 1,589
Posted By lr172
Made our first full family trip in the 10 this...

Made our first full family trip in the 10 this weekend. Took my wife and two younger sons to Beaver Island MI this weekend. Due to Covid, pretty much had the island to ourselves.

Larry
Forum: RV General Discussion/News 06-13-2020, 10:35 AM
Replies: 13
Views: 623
Posted By lr172
assuming it is a VDO sensor (the kavlico's...

assuming it is a VDO sensor (the kavlico's weren't available when the 120 was being sold), the most likely reason is a failed sensor. They often don't make it anywhere near TBO and usually fail by...
Forum: Electronic Ignition Systems 06-12-2020, 12:03 PM
Replies: 101
Views: 17,482
Posted By lr172
Not surprising. Don’t know much about AV...

Not surprising. Don’t know much about AV engines, but do know that the shape of the cylinder head chamber and piston head can greatly impact the optimal timing required.

Larry
Forum: Electronic Ignition Systems 06-12-2020, 08:49 AM
Replies: 101
Views: 17,482
Posted By lr172
anxious to hear more about this. You should be...

anxious to hear more about this. You should be able to incorporate fuel flow into the list of variables and this should be enough to set an appropriate timing level. That additional data point...
Forum: Electronic Ignition Systems 06-12-2020, 08:29 AM
Replies: 101
Views: 17,482
Posted By lr172
My experience is similar with the new 540. I...

My experience is similar with the new 540. I have my base curve set to give me around 32* at 21" of MAP. My megasquirt setup has both a second advance table that I use to up the timing 2* at lower...
Forum: Electronic Ignition Systems 06-11-2020, 02:15 PM
Replies: 101
Views: 17,482
Posted By lr172
Herein lies the problem with canned timing...

Herein lies the problem with canned timing curves. 38* at 8500' when LOP with one traditional mag (25*) doesn't seem that high. I run just a few degrees less than that in LOP cruise, with one mag. ...
Forum: Electronic Ignition Systems 06-11-2020, 12:47 PM
Replies: 11
Views: 912
Posted By lr172
more chars

more chars
Forum: VAF Classifieds (posts in here deleted after 30 days) 06-11-2020, 12:39 PM
Replies: 4
Views: 428
Posted By lr172
I have a set of black/grey cleveland seats with...

I have a set of black/grey cleveland seats with heaters I am about to sell. PM me if interested.
Forum: RV-10 06-11-2020, 12:36 PM
Replies: 11
Views: 818
Posted By lr172
I used sika and would not recommend it for this...

I used sika and would not recommend it for this application and certainly would not put fiberglass over it. It expands and contracts extensively with the temps. It is a great bonding agent for...
Forum: RV-10 06-11-2020, 12:33 PM
Replies: 11
Views: 818
Posted By lr172
I used sika and would not recommend it for this...

I used sika and would not recommend it for this application and certainly would not put fiberglass over it. It expands and contracts extensively with the temps. It is a great bonding agent for...
Forum: RV General Discussion/News 06-11-2020, 12:09 PM
Replies: 46
Views: 3,968
Posted By lr172
No fear mongering here. Just pointing out...

No fear mongering here. Just pointing out opinions contrary to the generally held belief that "no experimental builder has been sued." I believe the risk exists and that several have suffered...
Forum: RV General Discussion/News 06-11-2020, 08:57 AM
Replies: 46
Views: 3,968
Posted By lr172
Out of court settlements are NOT public record,...

Out of court settlements are NOT public record, as they occur "out of court" directly between the plaintiff and defendant. Settlement agreements in civil cases are NOT filled with the court. Our...
Forum: Electronic Ignition Systems 06-11-2020, 08:31 AM
Replies: 11
Views: 912
Posted By lr172
a mag drop test is designed to test two things. ...

a mag drop test is designed to test two things. First, presence of a failed mag/ignition system or a failed plug and second for improper timing. Assuming no failed plugs, the amount of EGT increase...
Forum: RV Ongoing Maintenance Issues 06-11-2020, 08:23 AM
Replies: 21
Views: 1,493
Posted By lr172
+1 If my alt was pumping out 50 amps for a few...

+1

If my alt was pumping out 50 amps for a few minutes after startup and then settled down, I would assume that my lead acid battery was failing and due for replacement. A failing battery often...
Forum: Fuel Injection Systems 06-11-2020, 08:16 AM
Replies: 18
Views: 1,234
Posted By lr172
You need an injector for each cylinder. Modern...

You need an injector for each cylinder. Modern cylinders have one hole pointed upward (preferred for injectors) and one hole pointed outward (usually for primers). Some old cylinders only had the...
Forum: RV General Discussion/News 06-10-2020, 08:53 AM
Replies: 46
Views: 3,968
Posted By lr172
The lack of of lawsuit "wins" does not not...

The lack of of lawsuit "wins" does not not constitute a lack of evidence of financial loss from defendants (settlements or legal fees). That data is usually protected by confidentiality and very...
Forum: Traditional Aircraft Engines 06-09-2020, 10:54 AM
Replies: 7
Views: 1,045
Posted By lr172
I would be looking for contact between the...

I would be looking for contact between the baffling and the cowl. You can typically find witness marks on the cowling interior surface if contact is being made, though it may be very light if the...
Forum: RV General Discussion/News 06-09-2020, 07:32 AM
Replies: 46
Views: 3,968
Posted By lr172
Mine has an exclusion. I think you would be VERY...

Mine has an exclusion. I think you would be VERY hard pressed to find one that didn't.

Larry
Forum: RV General Discussion/News 06-09-2020, 07:30 AM
Replies: 46
Views: 3,968
Posted By lr172
sorry, I was being too general. As I stated...

sorry, I was being too general. As I stated earlier in that post, one person may not release or sign away legal rights for another. If I sign a liability release or hold harmless agreement, it...
Forum: RV General Discussion/News 06-08-2020, 08:08 AM
Replies: 46
Views: 3,968
Posted By lr172
IMO, you are far less likely to get sued when a...

IMO, you are far less likely to get sued when a pilot/owner crashes and survives. The real risk is if the accident is fatal. In these cases, there is simply no real protection. Anything the...
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