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Search: Posts Made By: lr172
Forum: RV-10 Today, 07:00 PM
Replies: 3
Views: 69
Posted By lr172
That is what I thought. However, the example...

That is what I thought. However, the example that I saw said they used a 5/16-24 stud. The tube that Van's supplies has an OD of 7/16 and an ID Of 5/16. You can't tap a 5/16 tube for a 5/16 stud. ...
Forum: RV-10 Today, 05:03 PM
Replies: 3
Views: 69
Posted By lr172
Question on Door Pins

I was going to make some SS door pins. I saw an aftermarket set of pins that used 5/16-24 threaded rods for attachments and that made sense given the instructions calling for 5/16 bolt for setting...
Forum: Traditional Aircraft Engines Today, 04:06 PM
Replies: 10
Views: 814
Posted By lr172
I have built more than 10 engines in the last...

I have built more than 10 engines in the last several years. Yes, my memory failed me and the SBC is closer to 016 - 028 in gap, based upon a minimum .004" of gap per inch of piston diameter. ...
Forum: Traditional Aircraft Engines Today, 02:10 PM
Replies: 10
Views: 814
Posted By lr172
This is not correct. As was discussed in another...

This is not correct. As was discussed in another thread, a straight bore Lyc has a ring gap of .020 - .030 and a choke bore has a gap fo 045-055 (gap goes smaller than 020 at TDC). A typical big...
Forum: RV-10 Today, 12:59 PM
Replies: 91
Views: 21,862
Posted By lr172
An idea to consider. I know that when I...

An idea to consider. I know that when I encountered this problem with air, the answer was a reservoir to help stabilize readings. I wonder if a fuel reservoir of a decent size between the red cube...
Forum: Traditional Aircraft Engines Today, 11:46 AM
Replies: 8
Views: 607
Posted By lr172
Forgot to mention, based upon the depth of...

Forgot to mention, based upon the depth of scoring (the Pic seems to show some of scratches pretty deep, but tough to see) it is also possible that you have a broken compression ring. There are two...
Forum: Traditional Aircraft Engines Yesterday, 10:37 PM
Replies: 8
Views: 607
Posted By lr172
#1 certainly looks like either the ring developed...

#1 certainly looks like either the ring developed a burr (likely at the gap) or has some metal debris embedded in it. You can see a distinct progression and stopping point. The scoring appears to...
Forum: Traditional Aircraft Engines Yesterday, 11:46 AM
Replies: 20
Views: 2,269
Posted By lr172
THAT you can attribute to the synthetic oil. ...

THAT you can attribute to the synthetic oil. This is a problem as old as synthetic oil. An engine that has been run on traditional oil stocks for a long period of time (more of an age issue than...
Forum: Traditional Aircraft Engines 07-16-2018, 10:13 PM
Replies: 11
Views: 897
Posted By lr172
I would seriously question the vailidity of that...

I would seriously question the vailidity of that spec. Granted, there is less heat on the oil rings and they won't take the land out if they touch, but I don't see how they spec a gap .020-.030...
Forum: Traditional Aircraft Engines 07-16-2018, 10:03 PM
Replies: 10
Views: 814
Posted By lr172
Good point.

Good point.
Forum: Traditional Aircraft Engines 07-16-2018, 03:48 PM
Replies: 10
Views: 814
Posted By lr172
I would use air. This is a pretty standard...

I would use air. This is a pretty standard practice when pulling valve springs from non-overhead cam auto engines. No real sense sticking a rope in there, except for prop safety. you do need to be...
Forum: Glass Cockpit 07-16-2018, 01:06 PM
Replies: 2
Views: 121
Posted By lr172
Thanks Walt!

Thanks Walt!
Forum: Glass Cockpit 07-16-2018, 12:13 PM
Replies: 2
Views: 121
Posted By lr172
GAD 429 Sharing

I am installing a G3X setup with a GAD 429. If I were to install a G5, can it use the same 429, leveraging the G3X Canbus. If so, can I assume that I will get vertical and horizontal CDI...
Forum: Traditional Aircraft Engines 07-16-2018, 11:15 AM
Replies: 12
Views: 532
Posted By lr172
I would have to check the oil diagrams, but just...

I would have to check the oil diagrams, but just about certain that oil is pressurized in that araa, as the governor needs pressurized oil. However, I am not certain that the shaft is part of the...
Forum: RV General Discussion/News 07-16-2018, 10:30 AM
Replies: 7
Views: 441
Posted By lr172
I would completely pull it, if you can. It is...

I would completely pull it, if you can. It is much harder to get the surfaces clean if the gasket stuck. Being relatively new, it may pull right off. You'll also want to wipe the oil off the...
Forum: VAF Classifieds (posts in here deleted after 30 days) 07-16-2018, 08:35 AM
Replies: 2
Views: 196
Posted By lr172
WTB: GDL-39

Looking for a GDL-39 for my Garmin setup.

Larry
Forum: Traditional Aircraft Engines 07-15-2018, 11:32 PM
Replies: 11
Views: 897
Posted By lr172
When I built my 320, I found the piston clearance...

When I built my 320, I found the piston clearance and ring gap specs almost identical the the Chevy 350's I rebuilt the prior year for the boat and with larger pistons as well. Not that a small...
Forum: Traditional Aircraft Engines 07-15-2018, 11:28 PM
Replies: 11
Views: 897
Posted By lr172
I am confused. You say that your cylinders are...

I am confused. You say that your cylinders are measuring almost .010" small. If this were the case, your pistons shouldn't fit. If I recall correctly, the piston clearance is only .003 -.0045." ...
Forum: Traditional Aircraft Engines 07-15-2018, 11:11 PM
Replies: 12
Views: 532
Posted By lr172
I looked at those parts after remember...

I looked at those parts after remember incorrectly. The seal has to seal on both the outer shaft and the case, though only the seal with the outer case is relevant. However, the shaft does limit...
Forum: RV General Discussion/News 07-15-2018, 06:46 PM
Replies: 11
Views: 955
Posted By lr172
Was the low CHT/ high EGT during the stumbles or...

Was the low CHT/ high EGT during the stumbles or through the whole 3 cruise flight? Intermittent problem points to debris, constant problem points to leak in the intake or blockage.
Forum: VAF Classifieds (posts in here deleted after 30 days) 07-15-2018, 08:41 AM
Replies: 7
Views: 476
Posted By lr172
Interested in the injectors and fuel pump. PM...

Interested in the injectors and fuel pump. PM sent.
Forum: RV General Discussion/News 07-15-2018, 08:29 AM
Replies: 11
Views: 955
Posted By lr172
Recommendation above stands. Mostly likely cause...

Recommendation above stands. Mostly likely cause is either debris in the spider or debris in the injector for #1.
Forum: RV General Discussion/News 07-15-2018, 08:09 AM
Replies: 18
Views: 2,740
Posted By lr172
I have struggled with getting a decent idle, due...

I have struggled with getting a decent idle, due to fuel vaprorizing on the injector side of the servo. I also have my red cube next to the spider. I never have issues with heat in that circuit...
Forum: RV General Discussion/News 07-14-2018, 11:43 PM
Replies: 18
Views: 2,740
Posted By lr172
The servo will adjust the fuel flow based upon...

The servo will adjust the fuel flow based upon air flow through the servo, so be sure to watch the MAP when you see the fuel flow moving about to rule out a change commanded by the servo.

Larry
Forum: RV General Discussion/News 07-14-2018, 11:34 PM
Replies: 7
Views: 441
Posted By lr172
You need some type of sealant where sump gasket...

You need some type of sealant where sump gasket crosses the accy case gasket. your builder may have missed this. I don't think a wicking sealant will do it. There is no real way to get the oil out...
Forum: Traditional Aircraft Engines 07-13-2018, 11:16 AM
Replies: 11
Views: 1,020
Posted By lr172
Are you sure it was a backfire or was it possibly...

Are you sure it was a backfire or was it possibly an afterfire (gas exploding in exhaust). That is a pretty important distinction for diagnosing this. If it was an afterfire with stumbling and it...
Forum: Traditional Aircraft Engines 07-13-2018, 11:12 AM
Replies: 11
Views: 1,020
Posted By lr172
Do you know if the mags had their 500 hour...

Do you know if the mags had their 500 hour inspection or otherwise serviced since new?

Larry
Forum: RV Building Tips/Techniques 07-11-2018, 10:40 PM
Replies: 8
Views: 590
Posted By lr172
I filled the seams in the H stab tips on my 6, as...

I filled the seams in the H stab tips on my 6, as the original builder of the emp did a poor job. 3 years and 550 hours, no cracks. However, the seams on my 10 I did and the look respectable, so no...
Forum: Traditional Aircraft Engines 07-11-2018, 04:15 PM
Replies: 13
Views: 1,302
Posted By lr172
Glad to hear it worked out well and without any...

Glad to hear it worked out well and without any problems.

Larry
Forum: Traditional Aircraft Engines 07-11-2018, 03:24 PM
Replies: 20
Views: 2,269
Posted By lr172
This was my understanding. AD is not a...

This was my understanding. AD is not a detergent. Its job is to keep particles in suspension. It's path to cleanliness is by keeping the bad stuff in suspension and not letting it form on parts or...
Forum: Traditional Aircraft Engines 07-11-2018, 02:43 PM
Replies: 20
Views: 2,269
Posted By lr172
Sorry, but detergents don't work that way. There...

Sorry, but detergents don't work that way. There is a reason that Lycoming has you ream the valve guides when the build up gets bad enough for the valves to stick. If detergents were enough to...
Forum: RV General Discussion/News 07-10-2018, 08:41 PM
Replies: 11
Views: 955
Posted By lr172
Were you LOP when you observed the above...

Were you LOP when you observed the above condition? A significant reduction in CHT with an increase in EGT points to exhaust valve leakage. However, you need to evaluate how much CHT reduction and...
Forum: Traditional Aircraft Engines 07-10-2018, 03:58 PM
Replies: 20
Views: 2,269
Posted By lr172
+1 Seems improbable that a brand change can...

+1

Seems improbable that a brand change can cause a significant increase in consumption, at least at the rate you are talking about. I also agree that a borescope, compression test are all in order...
Forum: RV-10 07-10-2018, 03:01 PM
Replies: 1
Views: 320
Posted By lr172
Door fitting Queston

I am fitting my doors this week. based upon some research here, I don't think I am going to trust the index hole dimples. Instead, I will use a few spacers around the door to get it centered and...
Forum: RV-10 07-10-2018, 02:57 PM
Replies: 6
Views: 396
Posted By lr172
You install the al spacer flush or a bit proud of...

You install the al spacer flush or a bit proud of the f/g and then countersink. The 100* countersink will transition from the fiberglass and into the spacer. That countersink angle will allow the...
Forum: ADS-B 07-09-2018, 07:57 PM
Replies: 4
Views: 295
Posted By lr172
I don't use a 39 or garmin pilot, but I do have...

I don't use a 39 or garmin pilot, but I do have the symptoms you do. I believe that FF gets a GPS alititude from the IPAD OS and not a baro altitude. This is the reason for the discrepancy. The...
Forum: VAF Classifieds (posts in here deleted after 30 days) 07-09-2018, 07:27 PM
Replies: 6
Views: 565
Posted By lr172
I have a brand new and unused Dynon servo and...

I have a brand new and unused Dynon servo and that will connect directly to the AFS. PM me if interested.

Larry
Forum: RV-10 07-09-2018, 02:29 PM
Replies: 3
Views: 408
Posted By lr172
Thanks for the help guys!

Thanks for the help guys!
Forum: Glass Cockpit 07-09-2018, 12:50 PM
Replies: 2
Views: 243
Posted By lr172
Thanks for the input and this feature is really...

Thanks for the input and this feature is really nice. I am beginning to think I made the right decision moving to the G3X for my 10 project. I will setup relays on the trim input as I would for...
Forum: RV General Discussion/News 07-09-2018, 11:38 AM
Replies: 3
Views: 343
Posted By lr172
+1 Once meaningfull wear is present, the wear...

+1

Once meaningfull wear is present, the wear tends to accelerate. As Scott mentioned, the air leak will reduce the negative pressure in the venturi and cause the carb to think there is less...
Forum: Glass Cockpit 07-09-2018, 10:49 AM
Replies: 2
Views: 243
Posted By lr172
G3X Trim Question

I notice that the AP servo provide some type of pass through for trim functions. It seems clear that the GSA 28 servo will provide auto trim in AP mode using this function. I further deduce that I...
Forum: Glass Cockpit 07-09-2018, 10:15 AM
Replies: 3
Views: 383
Posted By lr172
Thanks Steve. In this case, the 430W is...

Thanks Steve. In this case, the 430W is uninstalled and has no settings that I care about and it won't be installed in my plane for the return trip. They can do a simple wipe and update with no...
Forum: Glass Cockpit 07-08-2018, 08:24 PM
Replies: 3
Views: 383
Posted By lr172
s/w update question for Garmin

I have an older 430W that I would like to get a s/w update for. Does Garmin, by chance, offer these updates to customers if they bring their equipment to your booth at Osh?
Forum: RV-10 07-08-2018, 01:13 PM
Replies: 3
Views: 408
Posted By lr172
Installing Wings w/ Fuse on Dolly

I would like to get my wings painted and out of the garage. However, I need to fit them first before painting to get all of the nutplates on for the gap covers. I am not ready to put the fuse on...
Forum: Fuel Injection Systems 07-08-2018, 11:45 AM
Replies: 10
Views: 781
Posted By lr172
+1 If you haven't adjusted the idle mixture yet...

+1
If you haven't adjusted the idle mixture yet on a new engine, I would absolutely start there. It seems unlikely that these are set anywhere near optimum at the factory and the guys running them...
Forum: RV General Discussion/News 07-08-2018, 11:27 AM
Replies: 5
Views: 744
Posted By lr172
My 6 is like the 4 you flew. It is a handfull...

My 6 is like the 4 you flew. It is a handfull and a roller coaster ride in cumulus clouds. I flew in a 10 a few months ago and while we didn't go through any clouds, I found it handled the typical...
Forum: Traditional Aircraft Engines 07-07-2018, 10:28 PM
Replies: 10
Views: 1,155
Posted By lr172
Looks really clean, likely due, in part, to the...

Looks really clean, likely due, in part, to the steady diet of mogas as well as the LOP ops. I wish I had easy access to mogas :(
Forum: Traditional Aircraft Engines 07-07-2018, 08:00 PM
Replies: 12
Views: 532
Posted By lr172
I don't remember copper threads there when I...

I don't remember copper threads there when I pulled my 540 apart, but it has been a couple of months. The purpose of that cap / plug is to cover a hole placed for machine access for the bore at...
Forum: RV-10 07-07-2018, 12:29 PM
Replies: 7
Views: 581
Posted By lr172
Thanks for explaining that. However, one must...

Thanks for explaining that. However, one must caution not to place the scat directly in the cowl exit, as that would reduce cowl exit area and therefore reduce the ultimate airflow through the cowl....
Forum: Glass Cockpit 07-07-2018, 11:47 AM
Replies: 12
Views: 751
Posted By lr172
This is not accurate, at least for the GRT. I...

This is not accurate, at least for the GRT. I have had my mag fail as well as flown it uncalibrated. Attitude is rock solid. Calibration is irrelevant. Reported heading relative to true north has...
Forum: Glass Cockpit 07-07-2018, 11:44 AM
Replies: 12
Views: 751
Posted By lr172
I have had several magnetometer issues with my...

I have had several magnetometer issues with my GRT, including a bad connection. Through all of it, I NEVER had the AHRS fail to poperly communicat and present good data on my HXr, except the...
Forum: RV-10 07-07-2018, 11:37 AM
Replies: 7
Views: 581
Posted By lr172
Not sure why you would want to route the air to...

Not sure why you would want to route the air to the cowl exit, as it will ultimately make it there on it's own without problems. I get reducing flow through the circuit to increase cooling...
Forum: RV General Discussion/News 07-07-2018, 11:29 AM
Replies: 39
Views: 2,920
Posted By lr172
You'll need to re-think your engine choice if...

You'll need to re-think your engine choice if planning a Lycoming engine. You do know that much of the engine, including the entire crankcase, is aluminum right?

Larry
Forum: Traditional Aircraft Engines 07-07-2018, 10:55 AM
Replies: 31
Views: 6,434
Posted By lr172
someone posted this on your thread. 2% Jet A...

someone posted this on your thread. 2% Jet A mixed with 100LL drops your octane rating 1 point. Most standard compression Lycomings require an octane rating several points below 100.

Larry
Forum: RV General Discussion/News 07-07-2018, 08:28 AM
Replies: 5
Views: 380
Posted By lr172
Robbins WIng is the name of his company. You...

Robbins WIng is the name of his company. You will find contact info via Google.
Forum: RV General Discussion/News 07-07-2018, 12:32 AM
Replies: 5
Views: 380
Posted By lr172
Robbins Wing in Denver. They will make a muff to...

Robbins Wing in Denver. They will make a muff to match your spec for $10 over the muff retail. They make the muffs that come with a Vetterman exhaust, I believe. I needed a unique configuration...
Forum: RV General Discussion/News 07-05-2018, 11:37 PM
Replies: 6
Views: 379
Posted By lr172
Does the starter have a round solenoid attached...

Does the starter have a round solenoid attached to it? If so, Place your hand on that solenoid have someone crank the engine while feeling for that clicking. Given that you smelled something...
Forum: RV-10 07-05-2018, 09:37 PM
Replies: 10
Views: 775
Posted By lr172
These green tops are pretty ugly on the inside,...

These green tops are pretty ugly on the inside, aren't they. I knocked down all the major blemishes on the forward interior (you'll find that after you remove the blemish, you're into the soft foam...
Forum: RV General Discussion/News 07-04-2018, 11:45 PM
Replies: 92
Views: 15,334
Posted By lr172
This is a flaw in the FAA testing and oversight,...

This is a flaw in the FAA testing and oversight, in my opinion. I did not understand the reason for cloud clearance until long after getting my PPL. I assumed it was a buffer they built in to keep...
Forum: RV General Discussion/News 07-04-2018, 11:31 PM
Replies: 92
Views: 15,334
Posted By lr172
You're right. I hadn't thought about it at the...

You're right. I hadn't thought about it at the time, But I and the supposed VFR traffic were about 1500 MSL and the MVA in chicago approach airspace is 2500. There really wasn't much the controller...
Forum: RV General Discussion/News 07-04-2018, 11:18 PM
Replies: 5
Views: 835
Posted By lr172
As Kevin's document shows, most recommended...

As Kevin's document shows, most recommended torque values are well below the fastner's yield. This is done so that the bolt, once torqued, still has more elongation available before it's yield...
Forum: Traditional Aircraft Engines 07-04-2018, 04:44 PM
Replies: 31
Views: 6,434
Posted By lr172
If I got one cup of Jet A in 16 gallons of avgas,...

If I got one cup of Jet A in 16 gallons of avgas, I wouldn't think twice about flying with it. 100LL is 100 octane. Pleople routinely run 91 octane mogas without detonation issues. While not a...
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