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Search: Posts Made By: blaplante
Forum: RV Ongoing Maintenance Issues 12-02-2022, 10:06 PM
Replies: 15
Views: 884
Posted By blaplante
Air / Oil Separators vary a lot in how well they...

Air / Oil Separators vary a lot in how well they do the job. What brand do you have?
Forum: RV-3 11-27-2022, 12:19 PM
Replies: 57
Views: 2,837
Posted By blaplante
More thoughts

I think I understand that you had:
Adjusted the rudder trim tab to center the ball.
Then, Removed the wheel pants,
and now the ball is (significantly?) out of center.

This means the wheel pants were...
Forum: RV-3 11-26-2022, 06:33 PM
Replies: 57
Views: 2,837
Posted By blaplante
very odd. Typically badly aligned wheel and leg...

very odd. Typically badly aligned wheel and leg fairings will cause issues with trim - ball out of center, etc. Hard to imagine them being so far off as to slow you down.

Things to consider:

How...
Forum: RV-7/7A 11-25-2022, 06:03 PM
Replies: 30
Views: 5,579
Posted By blaplante
Exactly the point I was trying to make. Thanks.

Exactly the point I was trying to make. Thanks.
Forum: RV-7/7A 11-24-2022, 10:41 PM
Replies: 30
Views: 5,579
Posted By blaplante
So you want to put a smaller than factory...

So you want to put a smaller than factory designed rudder and VS, onto a plane larger and heavier than the 8 VS/rudder was ever fitted to. Revisit the reasons why the 7 got a larger rudder & VS than...
Forum: RV-6/6A 11-23-2022, 09:16 AM
Replies: 5
Views: 627
Posted By blaplante
RV-6 info

Definitely early RV-6 wings are not swappable.

However, later ones may be. Later Phlostogen sets were match drilled to a template. My kit's splice plates were missing (some prior owner lost...
Forum: Electrical Systems 11-23-2022, 09:10 AM
Replies: 5
Views: 447
Posted By blaplante
Fusing Current Tables

https://www.powerstream.com/wire-fusing-currents.htm
Forum: Traditional Aircraft Engines 11-18-2022, 06:07 PM
Replies: 4
Views: 501
Posted By blaplante
Does the engine HAVE a vernatherm?

Does the engine HAVE a vernatherm?
Forum: RV-3 11-16-2022, 09:13 AM
Replies: 57
Views: 2,837
Posted By blaplante
Trim?

How much trim do you have on the elevator in cruise flight? A picture of the elevator in cruise will show that.

Reason? It is possible the angle of incidence of the horizontal stabilizer is set...
Forum: Autopilots 11-13-2022, 04:44 PM
Replies: 8
Views: 556
Posted By blaplante
Existing model?

You didn't mention what auto pilot you currently have. That could make things easier... or not.
Forum: RV-7/7A 11-12-2022, 09:26 AM
Replies: 10
Views: 1,515
Posted By blaplante
Stock type rubber seal baffles?

Stock type rubber seal baffles?
Forum: Propellers 11-12-2022, 09:24 AM
Replies: 43
Views: 2,537
Posted By blaplante
So far we've been thinking about the prop as a...

So far we've been thinking about the prop as a constant consistent rotational inertia (a big flywheel if you will).

I suspect (I don't know) that the prop experiences varied resistance (for lack of...
Forum: Propellers 11-11-2022, 11:14 PM
Replies: 43
Views: 2,537
Posted By blaplante
Great Stuff DanH. If I understand... then, it...

Great Stuff DanH. If I understand... then, it would be more likely for the Landoll to have some effect if the prop is a light (wood / composite / etc.) type than if it is a heavy metal one.

If...
Forum: Propellers 11-11-2022, 09:46 AM
Replies: 43
Views: 2,537
Posted By blaplante
Seems like a lot of the problem is the name. It...

Seems like a lot of the problem is the name. It is really a torsional vibration damper. "Balancer" is a bit of a misnomer.

I'm sure someone here has the instrumentation that could show a before...
Forum: RV-7/7A 11-07-2022, 10:55 PM
Replies: 15
Views: 1,374
Posted By blaplante
If you think the training wheels came off when...

If you think the training wheels came off when you finished the empennage... just wait until you get to the fiberglass stuff. What!??? NO predrilled holes? I have to trim & fit the cowl???? Wheel...
Forum: RV Ongoing Maintenance Issues 11-07-2022, 10:28 PM
Replies: 11
Views: 934
Posted By blaplante
So, things were normal until you put in the new...

So, things were normal until you put in the new fuel gauge and now *both* tanks read screwy? Is that correct?
Forum: RV Building Tips/Techniques 11-01-2022, 02:10 PM
Replies: 12
Views: 677
Posted By blaplante
this is a 6... so main wheels are on the mount. ...

this is a 6... so main wheels are on the mount. And no wings installed. So it involves supporting both the fuselage and the engine. Fabbing a custom bucking bar might be easier.
Forum: RV Building Tips/Techniques 10-31-2022, 02:55 PM
Replies: 12
Views: 677
Posted By blaplante
I agree a confirmation w/Vans is always a good...

I agree a confirmation w/Vans is always a good idea. I do like to avoid asking stupid questions... so the homework:

These (MK319 / MK321) are Monel metal rivets, shear strength = 258 lbs, tensile...
Forum: RV Building Tips/Techniques 10-31-2022, 02:40 PM
Replies: 12
Views: 677
Posted By blaplante
I have some CCC-32 ... I'd never use them in this...

I have some CCC-32 ... I'd never use them in this structure. Just don't seem very strong.
Forum: RV Building Tips/Techniques 10-31-2022, 02:38 PM
Replies: 12
Views: 677
Posted By blaplante
The no hole is a no go as I need to clear the...

The no hole is a no go as I need to clear the ears (eyes?) of the piano hinge
Forum: RV Building Tips/Techniques 10-31-2022, 12:37 PM
Replies: 12
Views: 677
Posted By blaplante
MK321-BS Source?

I'm looking for the longer version of the MK319-BS blind rivets. I can't seem to find anyone that has them in stock. Suggestions?

Alternatively... I'm trying to install piano hinge for the cowling...
Forum: RV-9/9A 10-31-2022, 10:28 AM
Replies: 24
Views: 2,125
Posted By blaplante
You don't mention the outside air temp when your...

You don't mention the outside air temp when your CHT's are 400+
That makes a difference.
There was a guy on here getting 400+ CHTs on a 75F day. Clearly has big issues. We gave a bunch of advice......
Forum: RV General Discussion/News 10-30-2022, 10:06 AM
Replies: 45
Views: 3,625
Posted By blaplante
What altitude would you be climbing to...

What altitude would you be climbing to initially?
It may make sense to do step climbs as you burn fuel and reduce the load.

As a point of reference, the Cessna 182T has placarded full power fuel...
Forum: Painting your RV 10-28-2022, 11:29 AM
Replies: 30
Views: 3,095
Posted By blaplante
I was about to mention it. I really liked it as...

I was about to mention it. I really liked it as well. Just checked - $280 per gallon. I also used it in white as the one step coating for all the interior.
Forum: Primers 10-25-2022, 05:41 PM
Replies: 27
Views: 2,806
Posted By blaplante
Alodine

Early in my build process I used Alodine (1200). It is very light, is a 'conversion' coating so it doesn't flake off, and has been used in aviation for ages. Adds no measurable thickness. Prime &...
Forum: RV-7/7A 10-24-2022, 05:42 PM
Replies: 19
Views: 3,611
Posted By blaplante
Wait a minute... you COMPLETED the test phase,...

Wait a minute... you COMPLETED the test phase, but never had fairings and pants installed?
Forum: RV-4 10-22-2022, 09:29 PM
Replies: 5
Views: 480
Posted By blaplante
Dynon in the 6

In the 6, the Roll Servo sits under the right side seat, right of the stick, mounted to the bottom skin of the plane. There's a push rod that attaches to the bottom of the right stick. This may...
Forum: RV General Discussion/News 10-22-2022, 09:23 PM
Replies: 30
Views: 2,978
Posted By blaplante
In the picture I can clearly see the commercial...

In the picture I can clearly see the commercial grade mini switches that are obtainable for about 1/50th that...
Forum: RV General Discussion/News 10-22-2022, 02:50 PM
Replies: 30
Views: 2,978
Posted By blaplante
Another Option

The late model Cessna 182 (G1000 era) has TWO trim switches in the pilot yoke. The idea is that BOTH have to be pressed in order to activate the trim. Being side by side that's easy enough. Point...
Forum: RV General Discussion/News 10-20-2022, 10:20 AM
Replies: 29
Views: 4,103
Posted By blaplante
Sounds like you also need to try the lapping in...

Sounds like you also need to try the lapping in place of the exhaust valves. Last annual I had one with splotchy lead buildup on the seat. Compression was still OK, but down from prior test. Did...
Forum: Traditional Aircraft Engines 10-14-2022, 09:42 AM
Replies: 9
Views: 1,334
Posted By blaplante
Implication?

It sounds like we should always aim for less CHT? So if we retard our mags, we get less CHT (and less power), and this makes things right with the world? If 20 degrees reduces CHT, and 15, reduces...
Forum: RV-6/6A 10-10-2022, 10:16 PM
Replies: 32
Views: 3,278
Posted By blaplante
For 150 HP, 2534 rpm, and the old wheel pants,...

For 150 HP, 2534 rpm, and the old wheel pants, this is pretty good. There's a post in here somewhere on how much you can gain upgrading the pants.

Edit: found it...
Forum: RV Building Tips/Techniques 10-05-2022, 05:31 PM
Replies: 6
Views: 701
Posted By blaplante
Made my own.

Made my own.
Forum: RV Ongoing Maintenance Issues 10-02-2022, 05:57 PM
Replies: 4
Views: 799
Posted By blaplante
I've always had bigger problems from the leaky...

I've always had bigger problems from the leaky alt air door design. When the silicon levels were high, it was the alt air door, not the filter.
Forum: RV-7/7A 09-28-2022, 05:29 PM
Replies: 20
Views: 2,329
Posted By blaplante
Bottom line you need to determine if you have a...

Bottom line you need to determine if you have a hollow crank or not. Hollow ... and have a governor pad... you should be able to install a conventional CS prop. Not hard to determine. Pull the...
Forum: RV-6/6A 09-12-2022, 12:09 PM
Replies: 32
Views: 3,278
Posted By blaplante
Van's book speeds for the...

Van's book speeds for the 6A
https://www.vansaircraft.com/rv-6/#aircraft-details-2

Quotes 150HP as 185 mph at 75% cruise speed.
From my experience, the 160 HP number is accurate... BUT only if you...
Forum: Traditional Aircraft Engines 09-07-2022, 10:49 PM
Replies: 34
Views: 5,928
Posted By blaplante
If you are reading pretty much ANY ohms between...

If you are reading pretty much ANY ohms between engine ground and airframe, that's too much. 1.0 ohm is TOO MUCH. That said, it is hard to accurately measure as any little bit of grease or...
Forum: RV-6/6A 09-07-2022, 12:17 PM
Replies: 21
Views: 3,223
Posted By blaplante
New thread please. If we are going to debate...

New thread please. If we are going to debate whether it is safe to sell our EAB plane or not, etc. etc. We already made the point to the original poster so lets stop cluttering up and diverting off...
Forum: RV-6/6A 09-05-2022, 08:06 PM
Replies: 11
Views: 1,272
Posted By blaplante
Adjusting the trim tab to spec... even if it...

Adjusting the trim tab to spec... even if it requires a new lever arm ... is going to be vastly easier than moving the battery aft.

Beware of treating the symptoms v. the root cause. Should be a...
Forum: Traditional Aircraft Engines 09-05-2022, 09:14 AM
Replies: 29
Views: 3,260
Posted By blaplante
At one time auto cylinder heads were cast iron,...

At one time auto cylinder heads were cast iron, and the seats were simply machined into the cast iron. THOSE seats depended on lead to survive. Early MGB's are an example.

As the lead went out,...
Forum: Glass Cockpit 09-04-2022, 07:19 PM
Replies: 13
Views: 1,032
Posted By blaplante
Better Options

For various reasons a Hall current sensor is better...
Forum: COMM 09-04-2022, 09:40 AM
Replies: 2
Views: 370
Posted By blaplante
Try swapping the antennas (by moving the cables...

Try swapping the antennas (by moving the cables between the radios). That'll help isolate the issue.
Forum: RV-7/7A 09-01-2022, 09:53 PM
Replies: 43
Views: 10,046
Posted By blaplante
New Avionics? So the fire got into the cabin or...

New Avionics? So the fire got into the cabin or just smoke?
Check the cabin floor. Any melt through? Same with the sides.
If the fire stayed fire wall forward then not so bad. If it damaged the...
Forum: COMM 08-26-2022, 02:45 PM
Replies: 30
Views: 2,442
Posted By blaplante
If all we are trying to do is have an 'emergency...

If all we are trying to do is have an 'emergency backup radio' then carry a handheld.
Forum: COMM 08-25-2022, 02:42 PM
Replies: 30
Views: 2,442
Posted By blaplante
Or put in an audio panel. I frequently sell...

Or put in an audio panel. I frequently sell working pulls cheaply. Unless there's no space...
Forum: COMM 08-25-2022, 09:21 AM
Replies: 30
Views: 2,442
Posted By blaplante
Is there some reason you wish to avoid an audio...

Is there some reason you wish to avoid an audio panel?
Forum: Traditional Aircraft Engines 08-18-2022, 09:28 AM
Replies: 30
Views: 2,851
Posted By blaplante
So, at least $3000 saved (probably an under...

So, at least $3000 saved (probably an under estimate of changing a cylinder).
For a cost of what... $20 in materials and some time? Not counting what you needed to pay your helpful mechanic.
Forum: RV-14 08-17-2022, 11:18 PM
Replies: 31
Views: 3,707
Posted By blaplante
Also not sure about the 14, but this could be a...

Also not sure about the 14, but this could be a side effect of wing angle to the fuselage. Is that pre-drilled on the newer planes, or something you have to measure, jig and drill like on the 6 and...
Forum: Traditional Aircraft Engines 08-15-2022, 09:05 AM
Replies: 30
Views: 2,851
Posted By blaplante
A new jug is a temporary fix too. :) If lapping...

A new jug is a temporary fix too. :)

If lapping the valve lasts for 50 hours... I've gotten another year of use out of it. Maybe next year I can get a new jug in less than 6 months.

I've done both...
Forum: Traditional Aircraft Engines 08-14-2022, 09:12 AM
Replies: 30
Views: 2,851
Posted By blaplante
So, for a thought exercise... what can go wrong...

So, for a thought exercise... what can go wrong here?
note) the grit breaks down fairly quickly - as you lap the valve you'll feel less grittyness as you spin the valve, which is partly the valve and...
Forum: RV Building Tips/Techniques 08-10-2022, 09:45 PM
Replies: 12
Views: 1,684
Posted By blaplante
My quadrant is mounted on the panel. No center...

My quadrant is mounted on the panel. No center post for me.
Forum: RV Building Tips/Techniques 08-10-2022, 06:19 PM
Replies: 12
Views: 1,684
Posted By blaplante
I actually took a Cherokee quadrant and made it...

I actually took a Cherokee quadrant and made it work. Had to fab some parts, shorten the arms, and I think I modified it so the cable exit angle was better. Sorry I've forgotten all the details. I...
Forum: RV-12/RV-12iS 08-10-2022, 06:12 PM
Replies: 5
Views: 749
Posted By blaplante
OKB jump traffic & pattern

Beware of two things at OKB:

VERY noise sensitive. You are expected to fly to the I5/coast before turning crosswind when departing 25. Similarly base for 07 is way out there.

right downwind for...
Forum: Traditional Aircraft Engines 08-09-2022, 06:39 PM
Replies: 5
Views: 572
Posted By blaplante
I should be able to help you out. I have a Catto,...

I should be able to help you out.
I have a Catto, and an (I) O-320-H2AD

First thing, I need TAS not IAS. If you don't have a Dynon or something that calculates TAS, then we need actual GS on a 3...
Forum: Traditional Aircraft Engines 08-08-2022, 06:31 PM
Replies: 18
Views: 2,491
Posted By blaplante
Ah, been there. Note the black shiny patches on...

Ah, been there. Note the black shiny patches on the exhaust valve seat area. You should have a nice constant ring, not a bunch of non-interconnected patches. That is lead build up on the exhaust...
Forum: Traditional Aircraft Engines 08-08-2022, 11:28 AM
Replies: 10
Views: 790
Posted By blaplante
To be clear - balanced injectors has nothing to...

To be clear - balanced injectors has nothing to do with CHT.
It is EGT... BUT you aren't looking for equal EGT temps... rather that ALL cylinders hit their peak at the same point in leaning. So 1...
Forum: RV General Discussion/News 08-08-2022, 08:46 AM
Replies: 8
MPG
Views: 1,041
Posted By blaplante
Google Maps says Raton to St. Johns is 421 miles...

Google Maps says Raton to St. Johns is 421 miles (or 484 NM), so distance covered is substantially shorter. Most of the route is interstate: I-25 and I-40. The one bit that is unfair is that St....
Forum: Traditional Aircraft Engines 08-08-2022, 08:37 AM
Replies: 10
Views: 790
Posted By blaplante
Could be a partially blocked injector or 'spider'...

Could be a partially blocked injector or 'spider' port.
Do a flow test. [4 small bottles for the lines to squirt into]
Should be information around somewhere ex Airflow Performance website on how to...
Forum: RV General Discussion/News 08-07-2022, 05:36 PM
Replies: 8
MPG
Views: 1,041
Posted By blaplante
I think engine time is tach time, which is based...

I think engine time is tach time, which is based on RPM, so running less RPM on your fixed pitch won't actually cause more engine hours for a given flight. At least that's my understanding.
Forum: RV General Discussion/News 08-07-2022, 01:48 PM
Replies: 3
Views: 620
Posted By blaplante
Which/what CNC

It is one of these https://www.youtube.com/watch?v=nobExDW7gEk
Tormach PCNC 1100 (I think an earlier model)
So 3 axis / mill / router type.

So no 90 degree inside corners due to the bit diameter. ...
Forum: RV General Discussion/News 08-07-2022, 11:58 AM
Replies: 8
MPG
Views: 1,041
Posted By blaplante
MPG

Given current fuel prices (and a retirement income), I did some more experimentation with LOP operation on my cross country flying (MN to CA). Yesterday flew from KRTN via KLVS, OTO, to KSJN. Flew...
Forum: RV General Discussion/News 08-07-2022, 10:17 AM
Replies: 3
Views: 620
Posted By blaplante
Some CNC ideas?

My nephew has gotten a pretty capable CNC machine... it can cut stainless. Which got me thinking that there must be lots of small things he could make small runs of that would be useful for our...
Forum: Electrical Systems 07-23-2022, 10:12 PM
Replies: 12
Views: 1,351
Posted By blaplante
Free opinion, worth what it cost you.... I think...

Free opinion, worth what it cost you....
I think soldering them will be really difficult. So I'd discard that idea.

I think I'd use a hydraulic crimper, crimp on terminal ends (4 pieces) and bolt...
Forum: RV Ongoing Maintenance Issues 07-22-2022, 12:47 PM
Replies: 16
Views: 2,068
Posted By blaplante
Did you recheck the breakout force? A fish scale...

Did you recheck the breakout force? A fish scale works, I use a luggage scale that holds the peak reading. Check to the left and to the right.
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