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Search: Posts Made By: lr172
Forum: RV Ongoing Maintenance Issues Yesterday, 11:36 AM
Replies: 5
Views: 301
Posted By lr172
battery seems an unlikely cause. EarthX draws a...

battery seems an unlikely cause. EarthX draws a LOT of amps initially and that should drop the output voltage, not increase it. I would be looking for a loose connection at the regulator. If you...
Forum: Traditional Aircraft Engines Yesterday, 11:31 AM
Replies: 3
Views: 258
Posted By lr172
Do you have the cam gear on backwards, assuming a...

Do you have the cam gear on backwards, assuming a two piece cam. If so, the mark(s) will be hidden from you. I had a missing mark somewhere on my 320. I found a pic online and used the visual...
Forum: RV General Discussion/News Yesterday, 08:09 AM
Replies: 23
Views: 1,234
Posted By lr172
My views are similar and would not sell my...

My views are similar and would not sell my planes. The builder is the builder until the plane is gone or A/W destroyed. If the 4th owners kills himself in my plane, there is a decent chance that I...
Forum: Traditional Aircraft Engines 10-20-2021, 08:45 AM
Replies: 8
Views: 634
Posted By lr172
These are Lycoming clones with ALL parts matching...

These are Lycoming clones with ALL parts matching the Lycoming engine. Therefore the Lycoming Operators manual will be applicable.
Forum: Traditional Aircraft Engines 10-20-2021, 08:41 AM
Replies: 2
Views: 221
Posted By lr172
No. Just the cover plate and gasket. I made a...

No. Just the cover plate and gasket. I made a plate from 1/4" Aluminum.
Forum: RV General Discussion/News 10-20-2021, 08:37 AM
Replies: 11
Views: 774
Posted By lr172
I used those inexpensive sitck on heaters (250...

I used those inexpensive sitck on heaters (250 watts) on my oil pan and they work great if you give it a couple of hours to do its work and put a blanket over the cowl. Also use cowl plugs to keep...
Forum: Electrical Systems 10-20-2021, 08:32 AM
Replies: 5
Views: 372
Posted By lr172
I didn't bother. Only the Field terminal needs a...

I didn't bother. Only the Field terminal needs a connection and a plastic insulated 1/4" fast on connector works well. The Stator connection is not needed and the ground can be taken off the case.
Forum: RV Ongoing Maintenance Issues 10-20-2021, 08:12 AM
Replies: 24
Views: 557
Posted By lr172
This is way too low if it is an accurate reading....

This is way too low if it is an accurate reading. Pressure is supposed to be 25 PSI. From my research, the bendix servo can effectively deal with pressures down to about 12-13 PSI (quoted from Don...
Forum: Glass Cockpit 10-19-2021, 08:36 AM
Replies: 7
Views: 265
Posted By lr172
I imagine that there is a configuration setting...

I imagine that there is a configuration setting to tell the G3x what kind of sensor is being used. Need to go deeper into the config settings. Can't imagine the system can decide by itself whether...
Forum: Traditional Aircraft Engines 10-19-2021, 08:15 AM
Replies: 5
Views: 454
Posted By lr172
The case has a slight positive pressure that is...

The case has a slight positive pressure that is forcing air out of any opening. IF the dip stick cap is allowing air to exit at that point, this positive pressure will push crankcase air past the...
Forum: RV General Discussion/News 10-19-2021, 07:50 AM
Replies: 15
Views: 2,725
Posted By lr172
I recently removed mine to clean it up and got...

I recently removed mine to clean it up and got improved performance. Just pull the knob all the way out and remove the 1" dia knurled nut (counter clockwise) and you will see the plastic part wedged...
Forum: RV General Discussion/News 10-19-2021, 07:37 AM
Replies: 44
Views: 2,154
Posted By lr172
I built a couple cars and two planes in my...

I built a couple cars and two planes in my Chicago garage. I used a kerosene heater but only enough to knock the edge off and not fully warm the garage, except when painting. I eventually got a...
Forum: Traditional Aircraft Engines 10-18-2021, 07:29 AM
Replies: 5
Views: 454
Posted By lr172
IMHO, if the crankcase pressure were high enough,...

IMHO, if the crankcase pressure were high enough, it would likely blow out the front seal before it could push up oil through the dipstick tube. I am guessing it is just oils ability to climb up the...
Forum: RV-10 10-16-2021, 11:23 AM
Replies: 8
Views: 768
Posted By lr172
It is not the UV that is your issue. It is the...

It is not the UV that is your issue. It is the oils and contaminants settling on the top. They create issues with paint adhesion and are difficult to remove from porous surfaces. At a minimum let...
Forum: RV Ongoing Maintenance Issues 10-15-2021, 11:25 AM
Replies: 8
Views: 745
Posted By lr172
Good catch. That support strap is a 3/16" steel...

Good catch. That support strap is a 3/16" steel strap who's primary purpose in life is to avoid the side load on the Alt pivot bolt. That Alt bracket is not designed to take that side load; it is...
Forum: RV-14 10-15-2021, 07:56 AM
Replies: 24
Views: 3,528
Posted By lr172
I would test these if I were you. I made...

I would test these if I were you. I made something similar for the 6 and has worked very well for years. I made something similar for the 10 and it popped out during a heavy wind event in Iowa. I...
Forum: GPS 10-15-2021, 07:38 AM
Replies: 4
Views: 350
Posted By lr172
The scaling issue is for approaches and not used...

The scaling issue is for approaches and not used for other tracking. Not sure on the legalities, but keep in mind that in enroute mode, full deflection is 5 miles off course and when scaled for the...
Forum: Midwest 10-15-2021, 07:27 AM
Replies: 12
Views: 625
Posted By lr172
I know a few in Chicago that have no issues with...

I know a few in Chicago that have no issues with RVs.
Forum: Traditional Aircraft Engines 10-15-2021, 07:15 AM
Replies: 4
Views: 319
Posted By lr172
In my 10, I get moderately low fuel pressures in...

In my 10, I get moderately low fuel pressures in the climb in hotter ambients; Never on cooler days and always in the later part of the climb where temps are rising due to the thinner air. In the...
Forum: RV-8/8A 10-14-2021, 10:49 AM
Replies: 8
Views: 1,476
Posted By lr172
Don't want to start a debate, but the builders...

Don't want to start a debate, but the builders liability cannot be eliminated like this. If this is a concern to the OP, do your research. Generally speaking, the builders concern is that if a...
Forum: RV General Discussion/News 10-11-2021, 11:08 AM
Replies: 42
Views: 4,511
Posted By lr172
Pretty sure that your Op Lim's call out this...

Pretty sure that your Op Lim's call out this paragraph as required and therefore it is compulsory for EAB. I know that they call out speicifc FARs for IFR and night VFR equipage and would be...
Forum: COMM 10-09-2021, 12:37 PM
Replies: 12
Views: 737
Posted By lr172
I rivet on a doubler and then rivet on nutplates....

I rivet on a doubler and then rivet on nutplates. As long as you use the taperred star washers on the antenna mounting, you can then paint the entire fuse bottom and install antenna later. Ground...
Forum: Safety 10-07-2021, 08:01 AM
Replies: 19
Views: 1,896
Posted By lr172
I got good advice from my CFI during transition...

I got good advice from my CFI during transition training. He said to not worry about skimming a cloud on that type of maneuver if things get dicey. He indicated that numerous loss of control...
Forum: RV-4 10-07-2021, 07:01 AM
Replies: 13
Views: 770
Posted By lr172
I have 6, so very similar but a bit heavier I...

I have 6, so very similar but a bit heavier I think and more drag. My 320 (160 HP) has been to 13,500 and climb was still around 250. I am guessing 15 or 16 would be near the limit (patience not...
Forum: VAF Classifieds (posts in here deleted after 30 days) 10-05-2021, 12:56 PM
Replies: 1
Views: 254
Posted By lr172
new or used?

new or used?
Forum: RV-10 10-05-2021, 12:35 PM
Replies: 6
Views: 671
Posted By lr172
390 at LOP cruise seems pretty high, unless only...

390 at LOP cruise seems pretty high, unless only 10-20* LOP, and might indicate an issue other than mixture, eventhough a fatter mixture makes it better. My GAMI spread is about .3 (not possible to...
Forum: Traditional Aircraft Engines 09-30-2021, 07:42 AM
Replies: 6
Views: 1,040
Posted By lr172
I would suggest that possibly there is too much...

I would suggest that possibly there is too much resistance in the wires or plugs, causing difficulty for the spark to jump the gap in the cap/rotor. Slick has also had some quality control issues...
Forum: RV-9/9A 09-30-2021, 07:33 AM
Replies: 1
Views: 509
Posted By lr172
PM sent. Larry

PM sent.

Larry
Forum: Electronic Ignition Systems 09-30-2021, 07:18 AM
Replies: 31
Views: 2,861
Posted By lr172
That's interesting. On the 10, my EI does 23*...

That's interesting. On the 10, my EI does 23* down low and starts to advance around 25". During ROP climbs, once I got to around 8000' my CHTs would start to rise aggressively and by 14,000 I was...
Forum: Fuel Injection Systems 09-30-2021, 06:59 AM
Replies: 19
Views: 1,126
Posted By lr172
From my research, the diaphragm pumps can flow a...

From my research, the diaphragm pumps can flow a lot. However they sacrifice pressure as the volume goes up (inverse relationship). The FI servos can deal with a very wide range of pressure inputs....
Forum: Traditional Aircraft Engines 09-27-2021, 11:36 AM
Replies: 4
Views: 679
Posted By lr172
This is true. With one polarity, the tangs wear...

This is true. With one polarity, the tangs wear and with the other, the center electrode wears.
Forum: Midwest 09-27-2021, 11:31 AM
Replies: 4
Views: 435
Posted By lr172
No approaches at Schaumburg, but otherwise easy...

No approaches at Schaumburg, but otherwise easy access. 1 Mile from Metra trains, but they go downtown and would need to hop the El to get to wrigley area. Drive time to wrigley about the same as...
Forum: Traditional Aircraft Engines 09-26-2021, 10:29 AM
Replies: 4
Views: 679
Posted By lr172
On a mag, the polarity reverses on each spark...

On a mag, the polarity reverses on each spark event. 1 is norm, 3 is reversed, 2 is normal, 4 is reversed. That is if my recall on the firing order was correct. Norm and reverse is illustrative,...
Forum: Traditional Aircraft Engines 09-26-2021, 10:21 AM
Replies: 9
Views: 665
Posted By lr172
I would start with Idle mixture. They are often...

I would start with Idle mixture. They are often very far off (overly rich) when they come from the factory. It should be adjusted before first flight. Probably too rich. Runs ok cold, as cold...
Forum: RV General Discussion/News 09-23-2021, 09:33 AM
Replies: 32
Views: 2,968
Posted By lr172
That was a pain and a fiasco. I remember they...

That was a pain and a fiasco. I remember they even re-did all the highway speed limit signs in both measures. Cars were a major pain with half the bolts SAE and the other half metric. Still kinda...
Forum: RV-10 09-22-2021, 08:03 AM
Replies: 58
Views: 9,330
Posted By lr172
Your math seems to jive with the recently posted...

Your math seems to jive with the recently posted system's claim of 8000 BTU's of cooling, drawing a max of 80 amps. However, your data seems to be based upon a Freon system, where the recently...
Forum: Traditional Aircraft Engines 09-21-2021, 11:05 AM
Replies: 6
Views: 491
Posted By lr172
300-325 is a bit more realistic. With no...

300-325 is a bit more realistic. With no experience, I suspect that the sparkplug ring probes may read 20-30* lower than the traditional type and that would bring your temps closer to typical.

Larry
Forum: Traditional Aircraft Engines 09-21-2021, 09:17 AM
Replies: 6
Views: 491
Posted By lr172
250-300 in climb in the summer seems too low to...

250-300 in climb in the summer seems too low to be right. Suggest verifying probe accuracy. Also look for probe mismatch. Type k probes with type c configured, etc.
Forum: Traditional Aircraft Engines 09-21-2021, 07:39 AM
Replies: 12
Views: 1,155
Posted By lr172
If the cylinders have rust, good chance there is...

If the cylinders have rust, good chance there is rust on many other parts inside the engine, including cam and lifters. Pretty good chance this could be an expensive exercise.
Forum: RV-10 09-20-2021, 07:32 AM
Replies: 17
Views: 1,091
Posted By lr172
You can use the 1.2" ray allen position sensor (I...

You can use the 1.2" ray allen position sensor (I made something very similar with a linear pot). You mount it under the rear passenger cover panel and make a mounting arrangement with a lever arm...
Forum: RV General Discussion/News 09-20-2021, 07:30 AM
Replies: 5
Views: 530
Posted By lr172
If you are starting at 1000 RPMs, the mixture is...

If you are starting at 1000 RPMs, the mixture is controlled mostly by the idle mixture, not the red knob.

I have been to denver several times with DA over 10K and never had an issue starting with...
Forum: RV Ongoing Maintenance Issues 09-20-2021, 07:23 AM
Replies: 27
Views: 2,342
Posted By lr172
With the bottom cowl off, lay the top cowl in...

With the bottom cowl off, lay the top cowl in place and have someone hold the forward end at the normal position relative to the spinner. You can then easily use a flashlight to determine what type...
Forum: RV-12/RV-12iS 09-20-2021, 07:18 AM
Replies: 17
Views: 3,103
Posted By lr172
I would bridge a wire from the Pitot heat,...

I would bridge a wire from the Pitot heat, landing lights or similar sized (10 amps) source and wire directly to the pump via it's pigtail or pull the supply side wire from the pump switch and bridge...
Forum: RV General Discussion/News 09-18-2021, 07:01 AM
Replies: 28
Views: 3,279
Posted By lr172
I am not sure that reply is fair. I highly doubt...

I am not sure that reply is fair. I highly doubt more than 1 or 2% of the RV population flys without some type of Liability insurance. Therefore it is fair to make that claim. Clearly this post...
Forum: RV-10 09-18-2021, 06:54 AM
Replies: 23
Views: 2,931
Posted By lr172
+1 If you need ram air pressure in the vents, it...

+1

If you need ram air pressure in the vents, it is masking another problem in your fuel delivery system. I use a rivet head shaped termination. No ram pressure and likely a bit of venturi induced...
Forum: RV Building Tips/Techniques 09-18-2021, 06:41 AM
Replies: 32
Views: 1,776
Posted By lr172
for most bending, I used the slide over springs...

for most bending, I used the slide over springs that keep the roundness during bending. They came with a pipe flaring kit. For tighter radius bends, I used the hand held bending tool. You can get...
Forum: Electrical Systems 09-17-2021, 10:26 AM
Replies: 73
Views: 13,439
Posted By lr172
This was my understanding. However, in my case,...

This was my understanding. However, in my case, I have an external regulator with no connection to the stator. Spinning or not, it is drawing a alot of amps on the field as soon as the regulator...
Forum: Electrical Systems 09-17-2021, 10:23 AM
Replies: 73
Views: 13,439
Posted By lr172
First, the alternator is spinning while cranking...

First, the alternator is spinning while cranking the engine and second, when the voltage drops to 10 while cranking, the regulator is throwing the full current on the field, trying to bring it back...
Forum: RV General Discussion/News 09-17-2021, 10:19 AM
Replies: 25
Views: 2,269
Posted By lr172
First, most SLA batteries are AGM. They need the...

First, most SLA batteries are AGM. They need the matt to be sealed, unless using gel, which is very different than AGM. Second, the voltage drop on transmit is very unlikely to be related to the...
Forum: Traditional Aircraft Engines 09-17-2021, 07:42 AM
Replies: 22
Views: 2,177
Posted By lr172
My read of that statement is that they complied...

My read of that statement is that they complied with it, but they further state that it was not applicable. I would have to assume from this that a tear down was not completed. With a proper...
Forum: Traditional Aircraft Engines 09-17-2021, 07:35 AM
Replies: 21
Views: 3,115
Posted By lr172
Early on I used them. At 100 hours, analysis...

Early on I used them. At 100 hours, analysis came back all good with smiley faces. Inspection of filter showed large amounts of Aluminum particles. Piston pin caps were wearing away rapidly and...
Forum: RV General Discussion/News 09-17-2021, 07:24 AM
Replies: 12
Views: 1,143
Posted By lr172
I am thinking that the form may have changed. My...

I am thinking that the form may have changed. My Loda (issued very early) has language that says either I or a delegate has the privileges herein. Maybe the doc has changed and now it states that...
Forum: Electrical Systems 09-16-2021, 11:17 AM
Replies: 73
Views: 13,439
Posted By lr172
Yes, but your car has 3-4 times the cranking...

Yes, but your car has 3-4 times the cranking capacity of my 540. I leave it off to save the 5 amps and several HP load.

Larry
Forum: RV-10 09-16-2021, 07:30 AM
Replies: 58
Views: 9,330
Posted By lr172
I like this one. 8K btu is probably the most we...

I like this one. 8K btu is probably the most we can expect for a 12V electrical unit. If the price were right, I would consider one. I found a 90 amp alternator that I believe would fit into the...
Forum: RV-10 09-16-2021, 07:19 AM
Replies: 4
Views: 866
Posted By lr172
This must be variable a bit. I used MC seals on...

This must be variable a bit. I used MC seals on the doors and took several steps to seal up all air ingress points on the fuse. I did my phase I in winter and often had no vents open and no heat on...
Forum: Electrical Systems 09-16-2021, 07:06 AM
Replies: 73
Views: 13,439
Posted By lr172
Same here, though don't use the PP. The 6 has...

Same here, though don't use the PP. The 6 has 800 trouble free hours with this procedure.
Forum: RV-10 09-15-2021, 07:50 AM
Replies: 58
Views: 9,330
Posted By lr172
I am still anxiously waiting for you to share the...

I am still anxiously waiting for you to share the details of your AC installation. Your post from a year ago was very intriguing with lighter weight components.

Larry
Forum: RV Ongoing Maintenance Issues 09-15-2021, 07:20 AM
Replies: 9
Views: 611
Posted By lr172
WHen the co-pilot presses the PTT, do only the...

WHen the co-pilot presses the PTT, do only the other crew hear the audio or does it also transmit on the radio?

If you have a conventionally wired jack, with both PTT and Mic lo connections, via a...
Forum: RV General Discussion/News 09-14-2021, 08:18 AM
Replies: 12
Views: 975
Posted By lr172
Seems every rule has an exception. This one...

Seems every rule has an exception. This one seems to apply universally.
Forum: Traditional Aircraft Engines 09-13-2021, 08:03 AM
Replies: 15
Views: 981
Posted By lr172
Do you remember if the inside bore of the relief...

Do you remember if the inside bore of the relief assembly was the same size as the ball or larger (about 1.5 X ball size)? I assume there was no cage sticking out around the tappered seat on the...
Forum: Traditional Aircraft Engines 09-13-2021, 07:51 AM
Replies: 15
Views: 981
Posted By lr172
Your relief system MUST have some way of holding...

Your relief system MUST have some way of holding the ball centered over the tapered seat, otherwise you get high psi at idle and low psi at high RPM. It is either a cage attached to the crankcase OR...
Forum: Traditional Aircraft Engines 09-13-2021, 07:47 AM
Replies: 15
Views: 981
Posted By lr172
Re-read post, as i added. Also, if you are...

Re-read post, as i added. Also, if you are getting 75 psi at idle, your problem is NOT a weak spring. The fact that you saw 100 PSI at high RPM would indicate no issues with the sump. Please...
Forum: Traditional Aircraft Engines 09-13-2021, 07:31 AM
Replies: 15
Views: 981
Posted By lr172
Let me confirm. You were getting 15 at idle and...

Let me confirm. You were getting 15 at idle and 50 at cruise for a long time. You took apart and reassembled the relief valve and the next flight, you got 75 at idle and 45 in cruise? Followed by...
Forum: Traditional Aircraft Engines 09-12-2021, 01:07 PM
Replies: 23
Views: 2,147
Posted By lr172
If it were only take off that you got the...

If it were only take off that you got the misfires, then yes excess heat could be causing fuel heat issues with extra lean or extra rich depending upon vapor lock in the pump vs boiling fuel in the...
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