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Search: Posts Made By: AlexPeterson
Forum: RV General Discussion/News 02-15-2021, 09:34 PM
Replies: 70
Views: 11,998
Posted By AlexPeterson
I like this idea. I have a small white led light...

I like this idea. I have a small white led light (might be for cargo beds, not sure) that I plan to hook to mine as a "I'm on" indicator. I like the timer idea better. A simple latching timer relay...
Forum: RV General Discussion/News 02-14-2021, 09:08 PM
Replies: 18
Views: 2,206
Posted By AlexPeterson
The high temps here have been below zero F for...

The high temps here have been below zero F for two weeks... This weekend's temps ranged from -30 to a high of -10, so, to answer the threads question - nothing.
Forum: RV General Discussion/News 02-11-2021, 07:55 AM
Replies: 14
Views: 1,583
Posted By AlexPeterson
I recall in 2001, if I'd chose Crystal (instead...

I recall in 2001, if I'd chose Crystal (instead of Anoka Cty.), I'd have had a narrow corridor leading north for one flight out, with no return until phase 1 done. They obviously have relented on...
Forum: RV General Discussion/News 02-11-2021, 07:31 AM
Replies: 14
Views: 1,583
Posted By AlexPeterson
Bob - it is the FSDO's rule, anyway, right? Not...

Bob - it is the FSDO's rule, anyway, right? Not the airport?
Forum: RV General Discussion/News 02-07-2021, 08:21 AM
Replies: 70
Views: 11,998
Posted By AlexPeterson
That might work if you get get a big enough bite....

That might work if you get get a big enough bite. It would depend on how likely a main is to hit resistance such as a small step in the concrete, a chunk of ice, etc. When pushing a trike...
Forum: RV General Discussion/News 02-07-2021, 06:53 AM
Replies: 70
Views: 11,998
Posted By AlexPeterson
Mickey - steal away. Your point about the...

Mickey - steal away. Your point about the nosewheel needing to be securely attached using the tow bar points if important. The nosewheel can't simply be lifted, even if it were chocked on the lift...
Forum: RV General Discussion/News 02-06-2021, 06:36 PM
Replies: 70
Views: 11,998
Posted By AlexPeterson
The nosewheel weight on my plane is around...

The nosewheel weight on my plane is around 320lbs, maybe 30-40lbs higher with full fuel and no pilot. The tug I made might put an additional 40 lbs on the drive wheels. So, Keith, if you could put...
Forum: RV General Discussion/News 02-06-2021, 07:58 AM
Replies: 70
Views: 11,998
Posted By AlexPeterson
Keith - the most elegant engineering is the...

Keith - the most elegant engineering is the simplest! I tip my hat to your solution. I also like the idea of the operator being the ballast, both for practical traction purposes and for sport. Do...
Forum: RV General Discussion/News 02-05-2021, 03:51 PM
Replies: 70
Views: 11,998
Posted By AlexPeterson
Doug - thanks, but don't give me too much credit...

Doug - thanks, but don't give me too much credit - Mark Erickson has built several, each more sophisticated than mine! I freely swiped ideas from him and others!
Forum: RV General Discussion/News 02-05-2021, 09:12 AM
Replies: 70
Views: 11,998
Posted By AlexPeterson
Thanks Dan, for the kind words. Regarding the...

Thanks Dan, for the kind words.

Regarding the PWM and twist grip controller... The twist grip came without any documentation of any sort (can't complain - $20 to my door for it and the other...
Forum: RV General Discussion/News 02-04-2021, 07:18 PM
Replies: 70
Views: 11,998
Posted By AlexPeterson
Nose Wheel Version

Dan and I have been in loose formation in building our respective tugs. I just gave mine its first test in pulling the airplane on Sunday, and am very happy that I won't have to deal with pulling...
Forum: RV Ongoing Maintenance Issues 02-04-2021, 07:15 AM
Replies: 21
Views: 1,298
Posted By AlexPeterson
I put these PAR36 bulbs in a few years...

I put these PAR36 bulbs in a few years ago:

https://www.amazon.com/gp/product/B01NAB4RTV/

They have spot and flood. I had to very slightly modify the bezel ring as they are more bulged or...
Forum: RV Building Tips/Techniques 01-29-2021, 12:23 PM
Replies: 10
Views: 696
Posted By AlexPeterson
Regarding the actual drilling, that can be tricky...

Regarding the actual drilling, that can be tricky also. Use a small bit, slow rpm, oil, lots of pressure. Enlarge it to size with a Unibit. Stuff makes razor sharp chips - be careful!
Forum: RV Ongoing Maintenance Issues 01-25-2021, 04:43 PM
Replies: 9
Views: 1,034
Posted By AlexPeterson
Little tears or rips in the sidewall of the tube...

Little tears or rips in the sidewall of the tube will happen if a lot of talc/baby powder is not used when assembling the tube and tire. Much written about this topic on these forums. My theory is...
Forum: RV-9/9A 01-22-2021, 09:23 PM
Replies: 15
Views: 2,274
Posted By AlexPeterson
As others have said, change out that nosewheel...

As others have said, change out that nosewheel bearing setup asap. Please see and read this thread (https://vansairforce.net/community/showthread.php?t=121430)carefully, particularly the parts...
Forum: RV General Discussion/News 01-13-2021, 05:05 PM
Replies: 9
Views: 1,111
Posted By AlexPeterson
I get a similar scam for renewing an LLC,...

I get a similar scam for renewing an LLC, something like $85 for what, in MN, is free at the state's SOS website.

I also got that scam a/c registration letter.
Forum: RV-14 01-09-2021, 11:26 AM
Replies: 8
Views: 1,047
Posted By AlexPeterson
You can figure it out, assuming you have an EFIS...

You can figure it out, assuming you have an EFIS that records the pitch angle. See this post (https://vansairforce.net/community/showpost.php?p=1460570&postcount=9).

The 6A has shorter main gear...
Forum: Electrical Systems 01-09-2021, 11:00 AM
Replies: 22
Views: 1,791
Posted By AlexPeterson
It will be worth your while to simply get a good...

It will be worth your while to simply get a good collection of terminals/connectors from Stein or other aviation supplier. Almost all Amazon or similar snack-packs of terminals out there are junk. ...
Forum: RV Ongoing Maintenance Issues 01-08-2021, 11:17 AM
Replies: 38
Views: 3,974
Posted By AlexPeterson
See my earlier post... the can itself doesn't...

See my earlier post... the can itself doesn't have to deform, the plate does (filter end cap or whatever it's called), allowing leakage and removing contact pressure/torque holding. The plate...
Forum: RV Ongoing Maintenance Issues 01-08-2021, 09:27 AM
Replies: 38
Views: 3,974
Posted By AlexPeterson
??? What o-ring?

??? What o-ring?
Forum: RV Ongoing Maintenance Issues 01-08-2021, 07:09 AM
Replies: 38
Views: 3,974
Posted By AlexPeterson
The "loose on removal" reminded me of a problem I...

The "loose on removal" reminded me of a problem I worked through quite a few decades ago. I had just changed oil on a car, but for whatever reason, the car sat overnight in a cold shed before I...
Forum: Electrical Systems 01-07-2021, 07:48 PM
Replies: 20
Views: 1,582
Posted By AlexPeterson
Welding cable often used for this, as the cable...

Welding cable often used for this, as the cable is much more flexible. I used that and soldered the terminals onto each end.
Forum: RV Building Tips/Techniques 01-06-2021, 12:30 PM
Replies: 31
Views: 10,027
Posted By AlexPeterson
Don't use EZ-Turn if you plan on being in any...

Don't use EZ-Turn if you plan on being in any cold weather. You'll cuss trying to get the cap off, and then you'll cuss even more when you try to remove all the sticky muck from the o-rings. It is...
Forum: RV-9/9A 01-03-2021, 01:55 PM
Replies: 29
Views: 3,699
Posted By AlexPeterson
This is not true. You would still be awake to...

This is not true. You would still be awake to see the wings break. The airplane does not care how short the duration of the g-event is, while your body does. The sticks in all RV's are very...
Forum: RV Ongoing Maintenance Issues 01-01-2021, 07:57 AM
Replies: 38
Views: 3,974
Posted By AlexPeterson
Assuming the maintenance DID include a new...

Assuming the maintenance DID include a new filter, is it possible that the old gasket remained on the adaptor such that there are now two gaskets?

As Dan said, we need to know if the maintenance...
Forum: Electronic Ignition Systems 12-31-2020, 06:42 AM
Replies: 37
Views: 2,020
Posted By AlexPeterson
Aircraft Spruce sells both LSE and Emag supplied...

Aircraft Spruce sells both LSE and Emag supplied adapters. I have begun replacing the adapters (LSE) at around 1000 hours, as they erode somewhat. Specifically, it is difficult to get the adapter...
Forum: RV General Discussion/News 12-24-2020, 09:36 AM
Replies: 36
Views: 3,422
Posted By AlexPeterson
I can't speak to the 7's. In my 6A, 180/CS, full...

I can't speak to the 7's. In my 6A, 180/CS, full fuel, solo, no baggage, it will take full aft trim on final w/partial or full flaps. On go around (or T&G), if one retracts the flaps it will take...
Forum: RV General Discussion/News 12-24-2020, 07:41 AM
Replies: 36
Views: 3,422
Posted By AlexPeterson
Consider a touch and go. You'll come down final...

Consider a touch and go. You'll come down final with full flaps, and most likely nearly full aft trim (depending on your plane/w&b situation). You touch down, and very quickly you'll want to raise...
Forum: RV Building Tips/Techniques 12-23-2020, 05:02 PM
Replies: 28
Views: 2,274
Posted By AlexPeterson
If the conduit is unbroken end to end, you might...

If the conduit is unbroken end to end, you might be able to use a vacuum cleaner on the outboard end, and feed a string in the other end. Pretty impressive how well that works, at least inside long...
Forum: RV-14 12-23-2020, 06:32 AM
Replies: 8
Views: 912
Posted By AlexPeterson
It depends on the angle the u-joint is subjected...

It depends on the angle the u-joint is subjected to and how "friction-free" the joint is supported. A picture of the setup would be helpful. I know of no rules of thumb for this, but my gut sense...
Forum: RV General Discussion/News 12-20-2020, 07:05 PM
Replies: 17
Views: 3,165
Posted By AlexPeterson
I use this method except I use a 4" zip tie...

I use this method except I use a 4" zip tie instead. Sometimes one doesn't need to clip the zip tie, as it doesn't always interfere, and can be left on (for future disassembly when another is...
Forum: RV Building Tips/Techniques 12-18-2020, 08:54 PM
Replies: 5
Views: 847
Posted By AlexPeterson
Been using baby powder for 19+ years. Use a lot...

Been using baby powder for 19+ years. Use a lot of it - many flat tires are caused by the tube gradually stretching w/r to the tire. This phenomenon is a bit mysterious, but seems to happen. Many...
Forum: RV Building Tips/Techniques 12-14-2020, 02:09 PM
Replies: 14
Views: 1,179
Posted By AlexPeterson
EZ-Turn. Stick 'em where you need them, including...

EZ-Turn. Stick 'em where you need them, including on your finger. I got this trick from an old airplane mechanic.
Forum: RV Ongoing Maintenance Issues 12-13-2020, 06:22 AM
Replies: 17
Views: 1,510
Posted By AlexPeterson
From the Royco 782 Data Sheet: "ROYCO 782 is a...

From the Royco 782 Data Sheet:

"ROYCO 782 is a red - colored synthetic hydraulic fluid developed to meet the severe duty demands of today's
military and industrial equipment. Modern additive...
Forum: RV Ongoing Maintenance Issues 12-12-2020, 09:08 PM
Replies: 5
Views: 612
Posted By AlexPeterson
My guess is that the leg needs grease on the...

My guess is that the leg needs grease on the cylindrical contact areas. Pull the leg and use whatever grease Van's recommends, I recall it being some sort of heavy/thick grease.
Forum: RV-10 12-11-2020, 01:18 PM
Replies: 21
Views: 2,534
Posted By AlexPeterson
A word of caution on MAP snubbers. I split the...

A word of caution on MAP snubbers. I split the MAP line and use two - one which provides MAP pressure to the electronic ignitions (I happen to have LSE), and another which provides pressure to the...
Forum: RV-10 12-11-2020, 11:15 AM
Replies: 21
Views: 2,534
Posted By AlexPeterson
The restrictors do also serve to stabilize...

The restrictors do also serve to stabilize readings, owing to the analog to digital conversions going on to display pressure. After installing a new panel (G3X Touch) I had oscillating manifold...
Forum: Traditional Aircraft Engines 12-08-2020, 07:40 PM
Replies: 22
Views: 1,799
Posted By AlexPeterson
Some thoughts: 1. Steel will not rust without...

Some thoughts:

1. Steel will not rust without the presence of water or some other electrolyte. (water vapor alone isn't enough, it has to condense). Any corrosion that might occur without water...
Forum: Safety 12-05-2020, 06:25 PM
Replies: 91
Views: 13,386
Posted By AlexPeterson
Steve, in my case, I simply put a few big zip...

Steve, in my case, I simply put a few big zip ties appropriately on the service loops. They are easy to get at once the efis is out. I'd worry a lot more about vibration, especially something that...
Forum: Safety 12-05-2020, 12:05 PM
Replies: 91
Views: 13,386
Posted By AlexPeterson
How true! However, if you use a flush cutting...

How true! However, if you use a flush cutting side, they will be cut flush and will not attack your hands. Example here (https://www.amazon.com/Cutter-Lightweight-Klein-Tools-D275-5/dp/B000GTMZHG).
Forum: Safety 12-04-2020, 10:10 PM
Replies: 91
Views: 13,386
Posted By AlexPeterson
My first wiring behind the panel started out...

My first wiring behind the panel started out reasonable, but evolved into a rat's nest after 15 years, although not as bad as the OP's picture. After 15 years, I redid the entire electrical system,...
Forum: RV Ongoing Maintenance Issues 11-29-2020, 07:13 PM
Replies: 31
Views: 3,888
Posted By AlexPeterson
The valve is in the oil cooler line. The...

The valve is in the oil cooler line. The vernatherm is disassembled, with the guts taken out, and the housing tightened back in to plug that hole. The oil cooler bypass spring and plunger are put...
Forum: RV-14 11-24-2020, 08:27 AM
Replies: 24
Views: 3,775
Posted By AlexPeterson
Great idea, use a small artist's brush for...

Great idea, use a small artist's brush for applying it, and you won't have much mess. Soap bubble are about the most sensitive test you can get, provided all the fuel is blown out first.
Forum: RV-6/6A 11-23-2020, 05:55 AM
Replies: 38
Views: 5,319
Posted By AlexPeterson
Two things are worth repeating. 1. Remove the...

Two things are worth repeating.

1. Remove the tank, which is a 30 minute job unless the screws are really painted over. How the fuel line (and vent line) are treated inboard of the fuselage side...
Forum: RV Ongoing Maintenance Issues 11-22-2020, 11:30 AM
Replies: 17
Views: 2,464
Posted By AlexPeterson
I had a screw on the aft side of #3 baffle into...

I had a screw on the aft side of #3 baffle into the cylinder fall out a couple times. Yes, with new star washers each time. I put a drilled head bolt in there and wired the dang thing down.
Forum: RV Ongoing Maintenance Issues 11-21-2020, 09:19 PM
Replies: 18
Views: 2,354
Posted By AlexPeterson
I've repaired mine 3 times in 1700 hours. The...

I've repaired mine 3 times in 1700 hours. The first two times were by grinding down some thickness and laying new glass and epoxy in the bottom. The third time was about 2 years ago. I ground down...
Forum: Electrical Systems 11-21-2020, 06:39 AM
Replies: 10
Views: 1,143
Posted By AlexPeterson
I don't even have the stripes. Below flap speed...

I don't even have the stripes. Below flap speed on downwind, flaps 4s. Short final flaps down until I can hear the end of travel sound. Flap positions simply aren't important enough to require...
Forum: RV-14 11-18-2020, 05:43 AM
Replies: 24
Views: 3,775
Posted By AlexPeterson
You might have a leak somewhere in the left...

You might have a leak somewhere in the left system, prior to the selector valve, allowing air to be sucked in. That might also explain the difference in the "smoothness" of the flow. Depending on...
Forum: RV-8/8A 11-13-2020, 05:10 PM
Replies: 8
Views: 942
Posted By AlexPeterson
Tom, spot on. I've had a backup mechanical oil...

Tom, spot on. I've had a backup mechanical oil pressure gauge in mine since it was new 19 years ago. As I've said many times before in many threads here - what are you going to do if you are...
Forum: RV-8/8A 11-13-2020, 05:07 PM
Replies: 8
Views: 942
Posted By AlexPeterson
Sounds a lot like the relief valve is stuck open....

Sounds a lot like the relief valve is stuck open. See this thread (https://vansairforce.net/community/showthread.php?t=180719).
Forum: RV Ongoing Maintenance Issues 11-12-2020, 07:15 PM
Replies: 30
Views: 3,602
Posted By AlexPeterson
Someone makes (made?) a tool which is basically a...

Someone makes (made?) a tool which is basically a fitting mounted on a hose clamp (not the Tempest one), which has a length of PCV tubing attached. One punches a small hole in the filter with the...
Forum: RV General Discussion/News 11-03-2020, 10:28 AM
Replies: 15
Views: 2,231
Posted By AlexPeterson
I believe most do not leave the tie-down rings...

I believe most do not leave the tie-down rings installed, we just keep them with us for situations where we do need them. Just extra drag, a very bad word around RV's!
Forum: RV Ongoing Maintenance Issues 11-03-2020, 10:05 AM
Replies: 36
Views: 12,624
Posted By AlexPeterson
On mine, I found corrosion in a few of the spark...

On mine, I found corrosion in a few of the spark plug wire contacts (I have auto spark plugs, Lightspeed ignitions). The engine was running fine, but I'd hear an rpm clocked buzzing in the radio...
Forum: RV Ongoing Maintenance Issues 10-31-2020, 07:30 AM
Replies: 36
Views: 12,624
Posted By AlexPeterson
Ignition wiring, spark plug or connection? If...

Ignition wiring, spark plug or connection? If one plug in cylinder #1 were misfiring, would not the symptoms be what you described? Slight drop in that cylinder's power (i.e., lower cht), but not...
Forum: RV-7/7A 10-30-2020, 08:53 PM
Replies: 16
Views: 3,339
Posted By AlexPeterson
Steve, thanks. I was wondering that since some...

Steve, thanks. I was wondering that since some of the pressure is traded off for velocity there could be a problem. I suppose if the main pressure drop is through the cooler itself, the pressure...
Forum: RV-7/7A 10-29-2020, 07:08 AM
Replies: 16
Views: 3,339
Posted By AlexPeterson
Steve, is the velocity/pressure situation such...

Steve, is the velocity/pressure situation such that the inner tube will stay expanded?
Forum: RV General Discussion/News 10-25-2020, 11:54 AM
Replies: 19
Views: 4,333
Posted By AlexPeterson
Early Winter in MN

Yesterday was a delightful day for flying - as long as the (2 months early) 13F temperatures don't scare one off. There is about 6" of snow at...
Forum: RV Building Tips/Techniques 10-23-2020, 10:24 AM
Replies: 15
Views: 2,652
Posted By AlexPeterson
What causes the severe wearing on the cone?

Thanks Dan.

BTW, the attached article has an explanation for the cone wear, which seemed very mysterious to me until I read it. (Dan - I believe you sent me this some years back).
Forum: RV Building Tips/Techniques 10-23-2020, 07:28 AM
Replies: 15
Views: 2,652
Posted By AlexPeterson
Dan, at what temperature is the measurement on...

Dan, at what temperature is the measurement on the drawing of the VT depicting?
Forum: RV Building Tips/Techniques 10-22-2020, 06:37 PM
Replies: 15
Views: 2,652
Posted By AlexPeterson
Heinrich, very good work, thanks for sharing. A...

Heinrich, very good work, thanks for sharing.

A couple of questions, if you could be so kind.

1. It appears that the two older VT's you tested had a shorter initial measurement - is this because...
Forum: RV Building Tips/Techniques 10-21-2020, 07:04 AM
Replies: 38
Views: 5,192
Posted By AlexPeterson
Very nice work! I've been planning to do...

Very nice work!

I've been planning to do something very similar this winter. My oil temps have always been at or near 185 during steady state cruise, but are marginal during climbs or slow flight...
Forum: RV-10 10-16-2020, 01:02 PM
Replies: 24
Views: 3,219
Posted By AlexPeterson
Dave, good catch. Not a unit error, but I had an...

Dave, good catch. Not a unit error, but I had an extra zero in the length (.0025m, .025m is correct for my example). With that correction, I get right at 1N for my hypothetical dimensions.

Thanks -
Forum: RV-10 10-14-2020, 09:55 PM
Replies: 24
Views: 3,219
Posted By AlexPeterson
It might not - I said it was an estimate. Also,...

It might not - I said it was an estimate. Also, one was estimated at 200mph, the other at 250, and drag is basically proportional to the velocity squared.

I'd like to see the data on the .41lbs. ...
Forum: RV-10 10-14-2020, 04:42 PM
Replies: 24
Views: 3,219
Posted By AlexPeterson
Finn, those dimensions are almost exactly what I...

Finn, those dimensions are almost exactly what I used. I also assumed the entire length was in the full velocity slipstream. I used 1.0 as a coefficient of drag (which might be incorrect, I did not...
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