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Search: Posts Made By: BJohnson
Forum: RV Ongoing Maintenance Issues 04-09-2021, 09:32 PM
Replies: 25
Views: 2,501
Posted By BJohnson
Found some leaks

I went back to the hangar today to look for leaks. I did find oil seeping past the oil drain lines at the hose clamps. I was surprised to find too many of the worm gear hose clamps loose. Those...
Forum: RV Ongoing Maintenance Issues 04-08-2021, 01:14 PM
Replies: 25
Views: 2,501
Posted By BJohnson
Same but different

Looks like Iím on the same hunt. Found oil on the bottom of my alternator when replacing the belt. No obvious leaks, but oil is dripping from the alternator just like the starter motor picture from...
Forum: Fiberglass 03-29-2021, 11:08 PM
Replies: 7
Views: 1,030
Posted By BJohnson
Water intrusion

One ply of 3k fabric over core is not a good idea. Water intrusion into the core will be problematic shifting the balance, and could delam the skin if it freezes.
Forum: Fiberglass 03-28-2021, 11:15 PM
Replies: 7
Views: 1,030
Posted By BJohnson
Maybe but...

The current rudder design is very efficient. Iím a composites guy at heart but love the simplicity and durability of the RVís. You could build a lighter rudder but the cost would not be very...
Forum: RV-9/9A 03-23-2021, 10:38 PM
Replies: 35
Views: 2,609
Posted By BJohnson
Same but different

I fly a fixed pitch -9A and have been trying a different approach that is working well. I plan to be at 80 knots abeam the numbers at idle, then add full flaps, pitch for 75 to 80, slow to 60 to 65...
Forum: Traditional Aircraft Engines 02-20-2021, 08:46 AM
Replies: 10
Views: 2,518
Posted By BJohnson
Connecting the follow up post

Here was the follow up - old posts but they should be together.

https://vansairforce.net/community/showthread.php?t=56094
Forum: RV Photo/Video URLs 01-02-2021, 05:49 PM
Replies: 17
Views: 3,367
Posted By BJohnson
Winds calm on ground but 30 knots at 3000

Flying straight and level and hit turbulence off the foothills. Hit my head hard enough to remind me that 2021 is here.
Forum: Alternative Engines 12-15-2020, 04:24 PM
Replies: 81
Views: 7,409
Posted By BJohnson
Amusing comparison of energy sources by volume

As impressive as Li-ion batteries are, by volume they store about as much energy as a ham and cheese...
Forum: RV-9/9A 10-24-2020, 01:30 PM
Replies: 25
Views: 5,886
Posted By BJohnson
Confessions of a -9a builder

I admit it. I have -8 envy, especially painted up like a fighter And with a smoke system. My wife has -10 envy for more room and more baggage. But Iíll keep my 9a. Bird in the hand....
Forum: RV-9/9A 10-23-2020, 10:35 PM
Replies: 25
Views: 5,886
Posted By BJohnson
Numbers donít lie

Based on the Hobbs meter, the 14 is the least popular with only 133 finished. :p

My bias is confirmed every time I go flying. The 9 is the most popular.
Forum: RV-10 09-06-2020, 08:05 PM
Replies: 814
Views: 667,789
Posted By BJohnson
Looks Awesome

Love the paint!
Forum: Painting your RV 08-29-2020, 09:27 PM
Replies: 8
Views: 1,356
Posted By BJohnson
Upper Valley Aviation

If the border ever opens up, they did a great job for me. They are in Chilliwack, BC.
Forum: Electrical Systems 06-06-2020, 02:12 PM
Replies: 35
Views: 3,786
Posted By BJohnson
6 years and 450 hrs

No blast tube. Bought before 2014.
Forum: Traditional Aircraft Engines 05-30-2020, 07:32 AM
Replies: 77
Views: 16,665
Posted By BJohnson
Imprints

From the imprints in the sand it looks like the back wheels came off the ground and landed off to the side of the main track. The spinner, prop blades and air scoop all left an imprint in the...
Forum: RV models of the future (RV-??) 05-10-2020, 01:55 PM
Replies: 652
Views: 246,316
Posted By BJohnson
STOL mentioned during Van?s webinar.

Anybody else notice how many times STOL was mentioned during the EAA webinar the other day with Vans Aircraft? Hmmmm
Forum: International 04-15-2020, 10:27 PM
Replies: 1
Views: 1,671
Posted By BJohnson
Great job, but

I really enjoyed your videos and tracking you as you went. A great inspiration to go somewhere with these marvelous machines we built!
Forum: Trip Write-ups 03-01-2020, 10:19 AM
Replies: 18
Views: 4,025
Posted By BJohnson
Awesome trip

Love the time lapse dual screen format and the slowdowns for the cool shots. Have a great trip!
Forum: RV General Discussion/News 02-25-2020, 11:16 PM
Replies: 29
Views: 9,319
Posted By BJohnson
Looks good!

You must have meant 25 inHg vacuum. You would need an autoclave to get to 25psi.;)

Do you have a preferred source for the non-crimped-fabric you were using?
Forum: RV-14 02-23-2020, 01:49 PM
Replies: 33
Views: 13,557
Posted By BJohnson
The best plexiglass bit

Meant for composites, and spendy, but these will drill perfect plexiglass holes in -10F conditions with heavy pressure. Of course, don?t actually do that, but the design of the bit is that forgiving...
Forum: ADS-B 11-11-2019, 12:55 PM
Replies: 90
Views: 32,835
Posted By BJohnson
GPS antenna under the cowl

For those of you that have mounted your GPS antenna under the cowling on a shelf next to other antennas, have you gone back months later and checked the performance and are you still getting...
Forum: RV General Discussion/News 09-05-2019, 10:49 PM
Replies: 64
Views: 11,489
Posted By BJohnson
Two biggest concerns with RV designs

I have two main concerns over the RV engineering.

First is the location of the fuel tanks which can easily impact a post or tree and rupture during an off field landing. Other designs put the tank...
Forum: RV-10 08-26-2019, 11:09 PM
Replies: 61
Views: 16,424
Posted By BJohnson
Poor bond prep

A good bond failure is a cohesive failure where the bonding agent fails leaving material on both components. This would also be the case with a poorly mixed adhesive resulting in poor strength. This...
Forum: RV-12/RV-12iS 08-22-2019, 12:53 PM
Replies: 8
Views: 1,732
Posted By BJohnson
Mineral Spirits

I used mineral spirits to clean adhesive residue off the canopy with good results. It does not attack the plexiglass.

Other options from the chart below are isopropyl alcohol or even gasoline. ...
Forum: Reviews 08-05-2019, 10:53 PM
Replies: 20
Views: 3,999
Posted By BJohnson
Interesting video of a Cirrus crash and Inreach tracker

I use the basic Spot3, but the look on this guys face when the text came in that search and rescue was on its way has me rethinking the texting options.

https://youtu.be/pSiTpHNq-IA
Forum: RV General Discussion/News 08-05-2019, 10:39 PM
Replies: 10
Views: 2,520
Posted By BJohnson
Is this the switch?

I like the idea of changing the switch. Is this the one you are referring to? https://www.steinair.com/product/locking-toggle-switch-dpdt-ononon/

How do they lock? Does it require a pull prior to...
Forum: RV General Discussion/News 08-04-2019, 09:43 PM
Replies: 10
Views: 2,520
Posted By BJohnson
Total Electrical Failure on First Leg to Oshkosh - self induced

I was at altitude settled into cruise for the 4 hr leg from Auburn WA to Logan UT to pick up my son from school, and talking to Chinook Approach for flight following. About an hour into the flight,...
Forum: RV General Discussion/News 07-21-2019, 03:28 PM
Replies: 26
Views: 7,314
Posted By BJohnson
Arrived Friday

We arrived Friday also. Left Seattle Thursday night and flew to Logan UT non stop on 25 gallons to pick up my son. This plane still amazes me with its efficiency. The next morning we left Logan...
Forum: RV General Discussion/News 07-12-2019, 07:32 PM
Replies: 88
Views: 15,853
Posted By BJohnson
Agreed

I will bail out and go around rather than pass, but why would he mention passing twice in the webinar. It sends a mixed message.
Forum: RV General Discussion/News 07-11-2019, 10:42 PM
Replies: 88
Views: 15,853
Posted By BJohnson
Passing slow aircraft

I listened to the EAA webinar and twice Fred Stadler suggested passing slow aircraft on the right if there was room in front. But the Notam says no passing? Did anyone else catch that?
Forum: Midwest 01-28-2019, 07:08 PM
Replies: 3
Views: 730
Posted By BJohnson
Thank You

Dick, Thanks for the offer! I will email you to follow up. I actually stopped in Faribault both ways the last time I flew to Oshkosh. It was a very nice airport and a great stopping place to fuel...
Forum: Propellers 01-27-2019, 12:25 AM
Replies: 71
Views: 18,312
Posted By BJohnson
Paint crack only?

Can you tell if this is in the paint or surface filler only, or do you see broken fibers? From the photos it looks more like the paint has cracked than any failure of the composite. Can you chip...
Forum: Midwest 01-27-2019, 12:05 AM
Replies: 3
Views: 730
Posted By BJohnson
Temp hanger space near Minneapolis after Oshkosh

I need to hanger my plane somewhere near Minneapolis for about a week after Oshkosh 2019 so I can drive back home with my family. Any recommendations on good options would be appreciated.
Forum: Safety 01-13-2019, 09:06 PM
Replies: 78
Views: 14,072
Posted By BJohnson
One last datapoint

Weather cleared and I had another attempt at collecting data at high power and slow speed. I updated the plot below with one other data point at 41 knots. The air was very smooth and I was able to...
Forum: Safety 01-09-2019, 08:53 AM
Replies: 78
Views: 14,072
Posted By BJohnson
RV-9A

I found that with the RV-9A, there is a very small range of airspeed where the power increase is substantial to fly on the backside of the curve. I was expecting a much larger airspeed region where...
Forum: Safety 01-09-2019, 08:41 AM
Replies: 78
Views: 14,072
Posted By BJohnson
Sure

Scott, each data point is a constant IAS glide test where the sink rate is measured. Several data points were collected during a single glide by varying the airspeed and holding. As Snopercod...
Forum: Safety 01-05-2019, 10:51 PM
Replies: 78
Views: 14,072
Posted By BJohnson
Found the backside

Tested again today, but the winds were a bit gusty and flying at high power and high AOA takes some practice. The best I got at near zero sink was the new data point at 40 knots shown in the plot...
Forum: Safety 01-03-2019, 07:31 AM
Replies: 78
Views: 14,072
Posted By BJohnson
I was thinking the same thing. It?s going to be...

I was thinking the same thing. It?s going to be a bit tricky maintaining zero sink at the edge of stall with full flaps.

Does anyone have experience with power on stalls with full flaps? I imagine...
Forum: Safety 01-01-2019, 04:59 PM
Replies: 78
Views: 14,072
Posted By BJohnson
Well - I was not expecting this!

Just got back from flight testing on a perfectly still air day in the PNW. I got the same flat power curve that has been shown for the other aircraft.
1560 lbs, 40°F OAT, IO-320, FP Sensenich GA,...
Forum: Safety 01-01-2019, 01:51 PM
Replies: 78
Views: 14,072
Posted By BJohnson
Nice landing Snopercod!

As I mentioned, I am guessing that the Lancair does not have high enough lift in the wing to fly on the backside of the power curve, which is what I think is at the root of the discussion. It...
Forum: Safety 12-31-2018, 11:14 PM
Replies: 78
Views: 14,072
Posted By BJohnson
Other interesting bits from the Van's article

Interesting and thought provoking discussion. The OP's primary point is that Power is Thrust times velocity (N m/s) is worth noting. It will flatten the plot but does not eliminate the existence of...
Forum: Engine Monitors 12-20-2018, 12:32 PM
Replies: 11
Views: 1,724
Posted By BJohnson
Thermocouples

There is no ground. Polarity is critical though. Each wire is a different alloy and the connecting wires must match to each other and both connect back to the instrument/EMS. Each point where...
Forum: RV-9/9A 11-20-2018, 11:04 PM
Replies: 421
Views: 446,301
Posted By BJohnson
Back from the Upper Valley Aviation paint shop

After a day of assembly, rolled Juliette out of the paint shop in Chilliwack, BC on a crystal clear November day to bring her back home! After not having her for several months it is time to go...
Forum: RV Building Tips/Techniques 09-01-2018, 10:17 AM
Replies: 5
Views: 1,141
Posted By BJohnson
How did you finish the edges

David, thanks for response. Did you fair the cowling so the edge of the scoop was flush to the cowling similar to the oil door?
Forum: RV Building Tips/Techniques 08-31-2018, 01:56 PM
Replies: 5
Views: 1,141
Posted By BJohnson
Fitting O-360 scoop on a O-320 cowling

During the initial build I modified my O-320 cowling in the scoop area and the FAB box fiberglass to fit within the existing cowling. Later I learned that I should have bought the O-360 cowling, but...
Forum: Northwest 07-12-2018, 11:25 PM
Replies: 1
Views: 2,760
Posted By BJohnson
Summit flyby video, almost

Here's a short video of our Mt Rainier flyby at 11,500ft, 3000 ft lower than the summit, but tucked in close to see the glaciers. It was another beautiful day in the PNW. ...
Forum: RV Ongoing Maintenance Issues 05-20-2018, 07:26 PM
Replies: 11
Views: 4,110
Posted By BJohnson
Improper break in?

I have been reading many of the other posts on brakes - lots of great information.

This is the third set of pads, and the first time I have used Matco pads on my Cleveland brakes. Every two years I...
Forum: RV Ongoing Maintenance Issues 05-18-2018, 10:46 AM
Replies: 11
Views: 4,110
Posted By BJohnson
This might be a factor

I did not fully disassemble the brake calipers when I noticed the leaks. I loosened the two bolts and adjusted the outer plate, which appeared to have bound on the pins. It is possible that fluid...
Forum: RV Ongoing Maintenance Issues 05-17-2018, 10:54 PM
Replies: 11
Views: 4,110
Posted By BJohnson
Overheated brakes

I just replaced the brake pads with a set from Vans on my Cleveland brakes about a month ago. I have about 8 landings on them. The other day I landed a bit fast and used moderate braking to stop. ...
Forum: My RV Build Project 02-26-2018, 01:59 PM
Replies: 4
Views: 3,592
Posted By BJohnson
just in time for spring!

Looks like you are just about there. You are going to love that plane for sure.

Go Rebels!
Forum: COMM 01-29-2018, 10:54 PM
Replies: 4
Views: 883
Posted By BJohnson
Works for a 496

I use my 496 to push frequencies to the Icom all the time. Select the airport, the frequency, hit enter and it goes into the backup frequency of the icom 210
Forum: Virtual Hangar 01-03-2018, 10:17 AM
Replies: 219
Views: 111,526
Posted By BJohnson
Awesome!

Way to go. It is a daily battle to live a healthy lifestyle. The race sounds like a grueling affair. I would say enjoy, but survive seems more appropriate.
Forum: RV General Discussion/News 09-17-2017, 09:15 PM
Replies: 48
Views: 13,602
Posted By BJohnson
Heat 3a

Relentless pulled up at the start near the first pylon and quickly landed on runway 14. It was too far away to see anything.
Forum: Fuel Injection Systems 09-03-2017, 11:33 PM
Replies: 5
Views: 2,930
Posted By BJohnson
Annually

I check it at each annual. I pull the pump and filter from the plane. Then remove the safety wire from the one end. The whole filter body can then be unscrewed from the fitting still attached to the...
Forum: RV General Discussion/News 08-21-2017, 08:40 PM
Replies: 33
Views: 9,191
Posted By BJohnson
Unforgettable

We launched out of Auburn and headed south for the Oregon coast. Weather was perfect, winds aloft were variable with smooth air. Center was refusing VFR flight following due to the shear number of...
Forum: RV-12/RV-12iS 08-06-2017, 09:50 AM
Replies: 39
Views: 7,397
Posted By BJohnson
Really?

Origionally didn't you just want Vans to review their data for a possible error? Now you want to audit all their flight test data and methods? I can see the FAA asking that of a certified aircraft...
Forum: Traditional Aircraft Engines 07-11-2017, 11:44 PM
Replies: 11
Views: 2,126
Posted By BJohnson
Great tips

Thanks for all the help. It seems like either fuel quality or the injector system/spider/nozzles. I called Precision Airmotive and they were very helpful with insights and information. Looks like I...
Forum: Traditional Aircraft Engines 07-10-2017, 10:15 PM
Replies: 11
Views: 2,126
Posted By BJohnson
More info

The engine has 260hrs since new. The OAT was below 80 in both cases. The odd behaving cylinder was different in both cases. Would that happen with sticky valves?

I do have an alt air door slightly...
Forum: Traditional Aircraft Engines 07-10-2017, 07:26 PM
Replies: 11
Views: 2,126
Posted By BJohnson
It was rich

All EGTs were below 1200F. I typically do this to keep CHTs in check during climbing, but probably don't need full rich. Would that cause a momentary rpm drop?
Forum: Traditional Aircraft Engines 07-10-2017, 01:06 PM
Replies: 11
Views: 2,126
Posted By BJohnson
Momentary RPM drop at climb power

What would cause a momentary loss of power at 85% power about 5 minutes after takeoff on a IO 320 using a Silverhawk fuel injection system? I was step climbing to clear Class B floors around Seattle...
Forum: RV Photo/Video URLs 03-26-2017, 11:41 PM
Replies: 789
Views: 558,698
Posted By BJohnson
Beautiful niner

Nice picture. I'm jealous of your paint job every time I see it at S50. I didn't paint before flying, and now I don't want to stop flying to paint.
Forum: RV-7/7A 03-18-2017, 11:20 AM
Replies: 28
Views: 8,978
Posted By BJohnson
One scenario

If the bolt sheared, the leg can rotate causing the sideways loading.

As to the gear's durability, doesn't Vlad fly the stock nose gear without any aftermarket bits? If so, given where he has gone...
Forum: Rocket 12-22-2016, 08:55 AM
Replies: 37
Views: 9,386
Posted By BJohnson
One suggestion

This is a bad assumption. Statically indeterminant does not mean that it carries no load. The loads are shared based on their stiffness. Taking load off the bolts with the cross bar is a good thing,...
Forum: RV General Discussion/News 11-11-2016, 12:50 PM
Replies: 45
Views: 10,105
Posted By BJohnson
Brake Fluid

I distinctly remember entering the hanger the day after bleeding my brakes, it was a little messy, and the smell of the brake fluid. For the first time, it smelled like a real, functional airplane.
Forum: RV-9/9A 10-17-2016, 11:19 PM
Replies: 31
Views: 12,252
Posted By BJohnson
Simple

I did this for one bracket on my 9A. Adjust the hole position relative to the rod end bearing bolt hole and drill the first hole, raise or lower the hole by the desired amount. Then use the original...
Showing results 1 to 64 of 248

 
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