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Search: Posts Made By: FinnFlyer
Forum: RV Building Tips/Techniques 11-18-2022, 04:00 PM
Replies: 24
Views: 1,502
Posted By FinnFlyer
Yes.

Even though my engine monitor has a Hobbs function I chose to install a mechanical Hobbs ($15 -- I think for boats).

When doing a software change to my engine monitor I would have to remember to...
Forum: RV-3 11-16-2022, 09:20 PM
Replies: 57
Views: 2,808
Posted By FinnFlyer
My point is that having the accurate template...

My point is that having the accurate template will detect any number of errors:

Incorrectly bent rear spar flanges, reversed aileron ribs, misdrilled aileron brackets, etc. etc.

Having the guy...
Forum: RV-3 11-16-2022, 01:53 PM
Replies: 57
Views: 2,808
Posted By FinnFlyer
How? Won't give flap/aileron part of profile,...

How? Won't give flap/aileron part of profile, which is what we're after here. Back to using tooling holes which I found unreliable. Do not understand why Vans stopped profile drawing on...
Forum: RV-3 11-16-2022, 11:29 AM
Replies: 57
Views: 2,808
Posted By FinnFlyer
Not a fan of using tooling holes

I recommend ordering the wing template from Vans. It is a full scale print out of the wing profile, including ailerons and flaps. You then trace it on a piece of particle board, plywood or other...
Forum: RV-12/RV-12iS 10-21-2022, 09:56 AM
Replies: 19
Views: 2,230
Posted By FinnFlyer
Then why in the world spend money on the...

Then why in the world spend money on the expensive crimp pins? If you anyway have to get in there with a razor blade you surely can get there with a soldering iron.
Or do what Walt suggests and...
Forum: RV-4 10-20-2022, 10:41 AM
Replies: 17
Views: 4,814
Posted By FinnFlyer
Sincerely doubt the original published weight for...

Sincerely doubt the original published weight for an RV-3 included IFR package.
Suspect it was minimal VFR, O235 (or lighter engine), wood prop and unpainted, possibly even no starter and...
Forum: RV-12/RV-12iS 10-17-2022, 06:26 PM
Replies: 19
Views: 2,230
Posted By FinnFlyer
Odd. Typical silicone is acidic. Not good near...

Odd. Typical silicone is acidic. Not good near electronics. However there is electronics-safe (non-corrosive) silicone, like Dowsil 737.

Finn
Forum: Florida (North) 10-15-2022, 02:19 PM
Replies: 0
Views: 334
Posted By FinnFlyer
KTVI and 24J flyins

It was good to meet some people from VAF at the Live Oak and Thomasville flyins this and last weekend!

I'm terrible with names but you know who you are.

Had hoped to chat with Dan Horton at KTVI...
Forum: RV General Discussion/News 10-15-2022, 02:14 PM
Replies: 8
Views: 1,006
Posted By FinnFlyer
You should be measuring infinite, not zero...

You should be measuring infinite, not zero there.
o ohms would mean there's a short from ground to center pin (or plates to ribs).

Finn
Forum: RV Photo/Video URLs 10-10-2022, 11:26 AM
Replies: 25
Views: 2,088
Posted By FinnFlyer
So why the spades?

So why the spades?
Forum: RV Photo/Video URLs 10-09-2022, 10:51 AM
Replies: 25
Views: 2,088
Posted By FinnFlyer
I experience aileron buffeting at full deflection...

I experience aileron buffeting at full deflection and some report that increasing deflection beyond buffeting does not increase roll rate. But perhaps the spades change that?

Finn
Forum: Electrical Systems 10-04-2022, 08:56 PM
Replies: 7
Views: 584
Posted By FinnFlyer
Don't think you can measure it with a normal...

Don't think you can measure it with a normal multimeter.

I guess it should be well less than 0.01 ohms (0.5V with 50 amps going though it). I could well be...
Forum: RV-4 09-25-2022, 10:20 PM
Replies: 3
Views: 409
Posted By FinnFlyer
Oddly the lengths are not given on drawing...

Oddly the lengths are not given on drawing #41.
However from front of front square tubing to rear of rear square tubing is shown as 53".
So add maybe 1.5" front and back = 56".
So 5 feet will...
Forum: RV-3 09-16-2022, 01:19 PM
Replies: 9
Views: 1,374
Posted By FinnFlyer
Note that this requires an alternator with...

Note that this requires an alternator with external regulator.

Having said that, I'm actually using a Mazda RX-7 alternator and its internal regulator where I was able to disconnect internal supply...
Forum: Safety 09-15-2022, 08:34 AM
Replies: 68
Views: 7,731
Posted By FinnFlyer
The only possible way that an RF signal could...

The only possible way that an RF signal could affect the trim motor would be if you have a speed control board between the trim switch(es) and the motor.

Have you looked at the schematic? Is there...
Forum: Safety 09-12-2022, 07:18 PM
Replies: 68
Views: 7,731
Posted By FinnFlyer
There is no "spring". Trim servo (motor)...

There is no "spring".

Trim servo (motor) directly sets the elevator trim tab via a push/pull rod. So you're fighting the trim tab.

Assuming your trim motor is the RC Allen (?) brand there really is...
Forum: RV-4 08-08-2022, 10:43 AM
Replies: 22
Views: 3,307
Posted By FinnFlyer
Read rudder pedals and aerobatics

Note that with a wood prop you'll likely be near or aft of rear aerobatic CG with an instructor, unless you can find a really small/light one. And finding one that's willing to do aerobatic...
Forum: RV-4 08-06-2022, 01:40 PM
Replies: 12
Views: 1,472
Posted By FinnFlyer
"per plans"

Note that the builder's manual allows to mount them so they are easy to bleed.

But it can be a tight fit.

I added a steel strip between the two alum angles that forms the "well" between your feet,...
Forum: Midwest 07-29-2022, 11:14 AM
Replies: 111
Views: 36,265
Posted By FinnFlyer
I obviously designed my cooling system wrong....

I obviously designed my cooling system wrong. Designed it for flying, not taxiiing.

Yes, with a bit of weight penalty by increasing radiator sizes and cowl flaps it could be optimized for...
Forum: RV General Discussion/News 07-29-2022, 10:37 AM
Replies: 20
Views: 3,979
Posted By FinnFlyer
Main wing spar bolt removal

I used big C-clamps to press out the main spar bolts on my old RV-3. Of course you'll need a pipe or similar to press the bolt heads into. Don't know how access is on the RV-6 ...

Yes, still need...
Forum: Safety 07-17-2022, 06:43 PM
Replies: 19
Views: 2,507
Posted By FinnFlyer
You are giving them way too much credit. I have...

You are giving them way too much credit. I have sincere doubts they have any clue as to what they want -- other than getting themselves killed. They are 100% unpredictable. Why would they start...
Forum: Safety 07-17-2022, 08:23 AM
Replies: 19
Views: 2,507
Posted By FinnFlyer
Unless that fence is 8 to 10 feet tall it means...

Unless that fence is 8 to 10 feet tall it means nothing.

Cost me a shattered wheel pant, new flap skin and small dent in underside of wing (tank) when a couple of fonds started racing along the...
Forum: RV General Discussion/News 07-17-2022, 07:26 AM
Replies: 13
Views: 1,631
Posted By FinnFlyer
So now I'm wondering why we use the CAV-110. Finn

So now I'm wondering why we use the CAV-110.

Finn
Forum: Glass Cockpit 07-04-2022, 06:17 PM
Replies: 11
Views: 732
Posted By FinnFlyer
As you lower the pressure on the static system...

As you lower the pressure on the static system (relative to pitot pressure) , the displayed airspeed will increase. At some point (don't remember the altitude or pressure) the pressure difference...
Forum: Glass Cockpit 07-04-2022, 05:48 PM
Replies: 11
Views: 732
Posted By FinnFlyer
Can't find it now but for the D10A/D!00 I think...

Can't find it now but for the D10A/D!00 I think it's recommended that pitot is tied to static when running the test up to higher altitudes (e.g. 10,000').

Something about not exposing the unit to...
Forum: RV-3 07-02-2022, 08:14 PM
Replies: 40
Views: 6,251
Posted By FinnFlyer
Getting the alum bar centered so it will fit in...

Getting the alum bar centered so it will fit in the gear leg fairing?

Finn
Forum: RV-3 07-01-2022, 09:00 PM
Replies: 40
Views: 6,251
Posted By FinnFlyer
I still have concerns about this method. Now you...

I still have concerns about this method. Now you have a much stiffer arm and the fore/aft forces are transferred more directly to the engine mount (gear leg mount tubes). The early RV-3 engine mounts...
Forum: Glass Cockpit 06-30-2022, 02:38 PM
Replies: 14
Views: 1,151
Posted By FinnFlyer
Static port error

You can definitely check your altimeter range using a water manometer.

But remember, even with a properly calibrated altimeter by an avionics shop, you can still get incorrect altitude in the air. I...
Forum: RV General Discussion/News 06-26-2022, 09:34 PM
Replies: 54
Views: 10,657
Posted By FinnFlyer
Probably not the best thread to post this reply,...

Probably not the best thread to post this reply, but here goes ...

The Mazda rotary is all I know. Know nothing about Lycomings.

Fuel burn a non-issue (cost) if compare 10% 87 Mogas to Avgas or...
Forum: RV General Discussion/News 06-25-2022, 04:47 PM
Replies: 54
Views: 10,657
Posted By FinnFlyer
I was until I replaced the GSL414 pump with a new...

I was until I replaced the GSL414 pump with a new GSL414. Thus my first post to this thread as a warning about picking too small a pump due to potential pump degrade over time. Picking a bigger pump...
Forum: RV General Discussion/News 06-25-2022, 11:22 AM
Replies: 54
Views: 10,657
Posted By FinnFlyer
Checking datalog from last flight: 39 psi WOT...

Checking datalog from last flight: 39 psi WOT take-off. 41 psi engine not running. Significant?

Finn
Forum: RV General Discussion/News 06-25-2022, 11:16 AM
Replies: 54
Views: 10,657
Posted By FinnFlyer
My return line goes at least out into the second...

My return line goes at least out into the second bay, if not more.

This was where I bought the newest replacement pump. Hope it's not a bad source.

https://www.ebay.com/itm/273889020230

Finn
Forum: RV General Discussion/News 06-25-2022, 08:35 AM
Replies: 54
Views: 10,657
Posted By FinnFlyer
BPR?

I thought it was a typo and was FPR. What's BPR?

GSL393 pulls 6.67 amps (engine not running, all fuel returned to tank via fuel pressure regulator).

Fuel pressure regulator is a cheap knockoff. Had...
Forum: RV General Discussion/News 06-24-2022, 08:56 PM
Replies: 54
Views: 10,657
Posted By FinnFlyer
Thanks Ross. I was not aware of mounting...

Thanks Ross.

I was not aware of mounting requirements.
Please clarify.
Is the inlet supposed to be above outlet? Mine is slightly below in level flight, more so with tail down. (Most of running has...
Forum: RV General Discussion/News 06-24-2022, 03:47 PM
Replies: 54
Views: 10,657
Posted By FinnFlyer
Yes, the fuel pressure regulator was a suspect....

Yes, the fuel pressure regulator was a suspect. However, after replacing the GSL414 with a new one, the pressure stayed up during this mornings test flight. I should mention that the pressure would...
Forum: RV General Discussion/News 06-24-2022, 12:49 PM
Replies: 54
Views: 10,657
Posted By FinnFlyer
GSL414 decreasing performance

After running the engine for perhaps 70 hours and flying 40 hours of that I found that the GSL414 dropped in performance.

The reason I picked the GSL414 was the much lesser current draw (3 amps)...
Forum: RV-3 06-01-2022, 08:31 AM
Replies: 17
Views: 1,996
Posted By FinnFlyer
Sounds trailing edges related. Now I can't...

Sounds trailing edges related.

Now I can't remember if sharper or rounded edges produce heavier forces.

When you put a ruler (top and bottom) are they really flat out to the trailing edge?

Finn
Forum: Florida (North) 05-25-2022, 07:38 AM
Replies: 9
Views: 1,683
Posted By FinnFlyer
Thanks Robert. Found it. Last packed in 2013. How...

Thanks Robert. Found it. Last packed in 2013. How time flies!

Yes, the age certainly gives me pause.

Now I'm wondering if there is such a thing as parachute rental. Really just need it for a flight...
Forum: Florida (North) 05-24-2022, 01:48 PM
Replies: 9
Views: 1,683
Posted By FinnFlyer
It's a 1995 National 425 Model...

It's a 1995 National 425 Model NP6/81101-2.

First repack for me was at Zephyrhills back in 2000. Think he used the floor to pack it.

Repacked again at last 5 years ago by Poppenhager (KCTY).

Now I...
Forum: RV-4 05-23-2022, 07:34 PM
Replies: 8
Views: 1,210
Posted By FinnFlyer
A twist should be easy to see if you lay the...

A twist should be easy to see if you lay the aileron on a flat table.
Same with flaps.

Using tooling holes did not work well for me. Ordering the paper template from Van's, using carbon paper to...
Forum: Florida (North) 05-19-2022, 09:04 PM
Replies: 9
Views: 1,683
Posted By FinnFlyer
Thanks, but Jax is a bit further than I'm willing...

Thanks, but Jax is a bit further than I'm willing to drive.

Anybody else, or perhaps around Clearwater (Tampa Bay)? Driving there anyway.

I guess I could put it into Phase II, fly somewhere to have...
Forum: Florida (North) 05-19-2022, 03:52 PM
Replies: 9
Views: 1,683
Posted By FinnFlyer
Parachute rigger in North Florida

Can anyone recommend a parachute rigger/packer in the Gainesville/Chiefland/Trenton/Branford/Alachua/High Springs area?

Finn
Forum: Glass Cockpit 05-17-2022, 10:51 AM
Replies: 0
Views: 284
Posted By FinnFlyer
Dynon D10A/D100 downloaded datalog units

I'm displaying airspeed on my D100 in mph.

During flight testing I don't take any notes. I download logged data and then crunch the numbers.

I just used the Dynon support program to download the...
Forum: RV-4 05-16-2022, 08:08 AM
Replies: 20
Views: 2,919
Posted By FinnFlyer
Floorboars

I too have noticed a significant difference in noise when resting my heels on the floorboards and lifting them of off them.

Don't know if it's prop blast, exhaust pulses or just some resonance.

I...
Forum: Glass Cockpit 05-11-2022, 06:57 PM
Replies: 17
Views: 2,395
Posted By FinnFlyer
Looking at it on ebay I do see four screws. So...

Looking at it on ebay I do see four screws. So maybe the back light is easily accessible/removable?

Yet, if that part number is for the whole thing there really should be a difference in the part...
Forum: Glass Cockpit 05-03-2022, 03:42 PM
Replies: 17
Views: 2,395
Posted By FinnFlyer
Suggest you contact the manufacturer and ask them...

Suggest you contact the manufacturer and ask them if they have an replacement and NIT upgrade:

26180 Enterprise Way, Building 100
Lake Forest, CA 92630
USA

Toll-Free: 1-866-LCD-SOLAR...
Forum: Safety 04-15-2022, 09:10 PM
Replies: 8
Views: 1,207
Posted By FinnFlyer
VSI is using static ports. Finn

VSI is using static ports.

Finn
Forum: Safety 04-15-2022, 10:49 AM
Replies: 8
Views: 1,207
Posted By FinnFlyer
Well, not my first time. Have forgot pitot cover...

Well, not my first time. Have forgot pitot cover a few times.

But my first time with no altitude (other than GPS).

And yes, not too difficult. Get a feel for stick forces. But was first or second...
Forum: Safety 04-14-2022, 07:27 AM
Replies: 8
Views: 1,207
Posted By FinnFlyer
Hmm ... actually had Dynon D-100 show something...

Hmm ... actually had Dynon D-100 show something like 169 mph on final approach, AOA tone blaring. I guess it got confused.

But seem to remember near zero airspeed during take-off. Could be wrong....
Forum: RV General Discussion/News 04-13-2022, 11:52 AM
Replies: 17
Views: 1,589
Posted By FinnFlyer
Nexus 7 with iFlyGPS

Not flying nearly enough x-contry, but been happy with the Nexus 7 with iFly GPS software. (Using Dual170 for GPS, traffic and weather input).

Of course as I write this, I've broken the Nexus 7...
Forum: Safety 04-12-2022, 07:35 PM
Replies: 8
Views: 1,207
Posted By FinnFlyer
No Airspeed and altitude

Had an interesting flight this early evening.

Due to wildlife (deer, turkeys and other birds) I keep my eyes outside during takeoff.

When above tree level I looked at ASI. Zero!

Then a look at...
Forum: Safety 04-11-2022, 08:21 PM
Replies: 7
Views: 1,161
Posted By FinnFlyer
I think with full tanks you are more likely to...

I think with full tanks you are more likely to see fuel coming out the vents with the coiled tubes. Even more so with no coils and just out the bottom of wing roots.

I previously suggested skipping...
Forum: Safety 04-11-2022, 08:12 PM
Replies: 7
Views: 1,161
Posted By FinnFlyer
Zip tie

As for plugs I now subscribe to the uncut large zip tie. Should prevent mud daubers for entering and will let enough air into prevent tank collapse. I "test flew" one in the vent and did not notice...
Forum: RV-14 04-11-2022, 07:59 PM
Replies: 17
Views: 2,905
Posted By FinnFlyer
OnSpeed AoA

In addition to visual display of AOA, you really should look into the aural (tone) AOA as well. Search for "OnSpeed". The was a really informative video posted...
Forum: RV Ongoing Maintenance Issues 04-07-2022, 11:33 AM
Replies: 2
Views: 723
Posted By FinnFlyer
Expenive

https://vansairforce.net/community/showthread.php?t=203179

See last posts.
Forum: Safety 03-31-2022, 05:58 PM
Replies: 26
Views: 4,277
Posted By FinnFlyer
AoA probe locations

Vac, love your replies! :)

I have a knack for getting myself side-tracked. What I should be doing is flight-testing. Given that I'm having a hard time finding days with optimum conditions, I figured...
Forum: Safety 03-31-2022, 12:03 PM
Replies: 26
Views: 4,277
Posted By FinnFlyer
AoA probe

Not sure I see the issue. Any probe will experience the non-straight streamlines under the wing.

Regarding your probe, I assumed that the two holes in the model pictured on your website forum was...
Forum: Safety 03-30-2022, 05:00 PM
Replies: 26
Views: 4,277
Posted By FinnFlyer
Nah. If I'm anyway going to replace my standard...

Nah. If I'm anyway going to replace my standard Van's bent 1/4" tube with a Pitot/AOA probe I'll rather wait for yours that is less sensitive to slips/skids.

What are the issues you're running into...
Forum: Safety 03-30-2022, 01:10 PM
Replies: 26
Views: 4,277
Posted By FinnFlyer
Thanks Lenny, The whole idea with the vane would...

Thanks Lenny,

The whole idea with the vane would be to calibrate pressure-sourced AOA. So there goes that idea. How would you calibrate a vane-AOA anyway?

So the top/bottom port idea would require...
Forum: Safety 03-30-2022, 08:49 AM
Replies: 26
Views: 4,277
Posted By FinnFlyer
AOA probes

Lenny,

As much as I can appreciate the Dynon Pitot/AOA probe design, I hate having stuff hanging out in the breeze (and the cost).

I was thinking about the system (Lift Reserve Indicator?) that had...
Forum: Safety 03-30-2022, 08:39 AM
Replies: 26
Views: 4,277
Posted By FinnFlyer
SA?

Vac, what is SA?

For newbies like me unexplained abbreviations really prevents understanding.

Like in a earlier post. CP. If it was written Cp I might have figured out it was pressure coefficient,...
Forum: Safety 03-30-2022, 08:25 AM
Replies: 26
Views: 4,277
Posted By FinnFlyer
From Lenny's reply the Dynon pitot/AOA probe will...

From Lenny's reply the Dynon pitot/AOA probe will work fine.
It's the Dynon EFIS that introduces limitations.
If you look at their flyonspeed.org website and from previous posts I think that they...
Forum: Safety 03-29-2022, 08:57 AM
Replies: 26
Views: 4,277
Posted By FinnFlyer
Thanks Lenny, "coefficient of lift"? CP? Cp?...

Thanks Lenny,

"coefficient of lift"?

CP? Cp? Pressure coefficient? Pressure difference between Pitot and AOA port?

I'm obviously in over my head here and need to study up on all this.

Yes,...
Forum: Safety 03-29-2022, 08:43 AM
Replies: 26
Views: 4,277
Posted By FinnFlyer
Thanks Vac. Your graph seems to show results...

Thanks Vac.

Your graph seems to show results similar to mine. AOA % only comes alive (non-zero) with air speeds below 85 mph or so.

So if I want to get serious about this I need to tap my own...
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