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Search: Posts Made By: Toobuilder
Forum: RV General Discussion/News Yesterday, 08:01 AM
Replies: 52
Views: 8,440
Posted By Toobuilder
BPR = Bypass Pressure Regulator?

BPR = Bypass Pressure Regulator?
Forum: Traditional Aircraft Engines 06-21-2022, 05:34 PM
Replies: 10
Views: 735
Posted By Toobuilder
Check the suction side on the inverted system, in...

Check the suction side on the inverted system, in particular the hoses. My Hiperbipe lost most of the oil pressure on my first flight. Turned out the brand new Aeroquip hose collapsed the inner...
Forum: Traditional Aircraft Engines 06-20-2022, 08:59 PM
Replies: 19
Views: 1,104
Posted By Toobuilder
Big compression is more easily managed with a...

Big compression is more easily managed with a tunable ignition advance curve. Keeping detonation at bay requires a substantial timing retard at TO power, but this will conflict with the still fairly...
Forum: RV-14 06-15-2022, 08:48 PM
Replies: 17
Views: 1,334
Posted By Toobuilder
Also throw my opinion in for the Monkworkz MZ-30....

Also throw my opinion in for the Monkworkz MZ-30. Much smaller than the B&C and PP units and does not require any goofy boxes to add the hands free, automatic switchover to backup power. Its all...
Forum: RV-4 06-10-2022, 09:39 AM
Replies: 11
Views: 1,644
Posted By Toobuilder
I fabricated and installed my new augmentor tubes...

I fabricated and installed my new augmentor tubes and decided to choke them down to 4.5 inches. I also sealed all gaps in the lower cowl area with RTV so I am down to a total exit area of 31 inches....
Forum: Electronic Ignition Systems 06-09-2022, 12:52 PM
Replies: 9
Views: 843
Posted By Toobuilder
I believe the coil used by the pmag folks is an...

I believe the coil used by the pmag folks is an off the shelf Ford of some kind. That should narrow the search.
Forum: Traditional Aircraft Engines 06-08-2022, 12:33 PM
Replies: 33
Views: 1,955
Posted By Toobuilder
Typically, the viscosiy valve is mounted on the...

Typically, the viscosiy valve is mounted on the accessory case itself, not the filter adapter or screen housing. If you know where to look, you cant miss it.
Forum: RV General Discussion/News 06-08-2022, 10:43 AM
Replies: 25
Views: 1,737
Posted By Toobuilder
I use the Amazon stick on pads and they work...

I use the Amazon stick on pads and they work great for me
Forum: RV-8/8A 06-07-2022, 09:08 PM
Replies: 8
Views: 623
Posted By Toobuilder
I retrofitted the new mast directly on the...

I retrofitted the new mast directly on the aileron belcrank cover itself on the RV-8 and the Rocket. No issues.
Forum: Traditional Aircraft Engines 06-07-2022, 09:05 PM
Replies: 33
Views: 1,955
Posted By Toobuilder
Yep, thats what I thought too. I bought the...

Yep, thats what I thought too. I bought the airplane with 58 hours TT and the engine was installed as a brand new from the factory certified engine.

Viscosity valve made a huge difference for me....
Forum: Electrical Systems 06-07-2022, 04:48 PM
Replies: 24
Views: 1,978
Posted By Toobuilder
I am using a 70 amp ND from a Toyota Camry. Its...

I am using a 70 amp ND from a Toyota Camry. Its converted to external regulation from instructions in the Kitplanes article and Im using the B&C regulator. About 450 hours of flawless performance...
Forum: Traditional Aircraft Engines 06-07-2022, 10:17 AM
Replies: 33
Views: 1,955
Posted By Toobuilder
In all the engines I have experience with, the...

In all the engines I have experience with, the vernatherm and the viscosity valve live within different bores and do not interfere with each other. In these cases, the installation of the viscosity...
Forum: Glass Cockpit 06-06-2022, 10:02 PM
Replies: 15
Views: 1,003
Posted By Toobuilder
I had a little puck from an old 296 in my junk...

I had a little puck from an old 296 in my junk drawer and my G5 seems to like it
Forum: Traditional Aircraft Engines 06-06-2022, 07:54 PM
Replies: 33
Views: 1,955
Posted By Toobuilder
Yep, Jake shows it. This scheme is also used...

Yep, Jake shows it. This scheme is also used with people who use a ball valve to control oil flow for winter ops. Several good threads on it here.

Though the plunger itself is cheap, the specified...
Forum: Traditional Aircraft Engines 06-05-2022, 10:38 AM
Replies: 33
Views: 1,955
Posted By Toobuilder
The reason I recommend the viscosity valve as a...

The reason I recommend the viscosity valve as a troubleshooting step is because it eliminates the well known issue of poor Vernatherm plunger sealing. Even with good sealing, there is still a lot of...
Forum: Traditional Aircraft Engines 06-05-2022, 10:17 AM
Replies: 33
Views: 1,955
Posted By Toobuilder
Assuming you have checked all the normal stuff...

Assuming you have checked all the normal stuff (baffles, sealing, sensor accuracy, birds nests), I highly recommend that you install a viscosity valve in your engine if nothing more than a low cost...
Forum: Electrical Systems 06-05-2022, 10:08 AM
Replies: 59
Views: 5,810
Posted By Toobuilder
Just tested the new (current) regulator...

Just tested the new (current) regulator architecture as I had one of the early models...

I intend this unit to be a back up and is directly connected to my EFI buss. This buss has a dedicated...
Forum: Traditional vs. Alternative Powerplants 06-04-2022, 11:51 AM
Replies: 23
Views: 1,866
Posted By Toobuilder
Just re read this part. Why on earth would you...

Just re read this part. Why on earth would you want timing set anywhere near this on takeoff? My 8.5 engine is set to 17 degrees on TO. It's a set and forget issue - 100LL or car gas, the engine...
Forum: Traditional vs. Alternative Powerplants 06-04-2022, 10:32 AM
Replies: 23
Views: 1,866
Posted By Toobuilder
Detonation on takeoff is a "thing" when you have...

Detonation on takeoff is a "thing" when you have fixed timing with magnetos. Remember that with fixed timing you are trying to satisfy two masters - a large enough advance to give reasonable high...
Forum: Traditional vs. Alternative Powerplants 06-04-2022, 08:39 AM
Replies: 23
Views: 1,866
Posted By Toobuilder
We also need to understand that knock sensors in...

We also need to understand that knock sensors in cars are required because they are trying to optimize timing and mixture to a very, very tight standard to meet fleet emissions standards. Our...
Forum: RV Ongoing Maintenance Issues 06-04-2022, 08:13 AM
Replies: 10
Views: 887
Posted By Toobuilder
Airflow 2007x. Same unit some are using on their...

Airflow 2007x. Same unit some are using on their 4 banger 390's.

Readers need to understand that my comments are meant to inspire critical thought - they are not direct guidance. My point is...
Forum: RV Ongoing Maintenance Issues 06-03-2022, 05:46 PM
Replies: 10
Views: 887
Posted By Toobuilder
There are exceptions and there are crutches. I...

There are exceptions and there are crutches. I think "most" RV's have less than ideal baffle sealing, less than ideal oil cooler sealing, vernatherms that blow a large portion of the oil flow right...
Forum: RV Ongoing Maintenance Issues 06-03-2022, 09:08 AM
Replies: 10
Views: 887
Posted By Toobuilder
I run #6 lines on my Rocket (IO-540, 330+ HP,...

I run #6 lines on my Rocket (IO-540, 330+ HP, WITH PISTON SQUIRTERS). Despite living in one of the hottest places you will ever hope to fly, I have a hard time getting my temps above 185. ...
Forum: Electronic Ignition Systems 05-30-2022, 08:52 AM
Replies: 13
Views: 979
Posted By Toobuilder
I have measured the total system draw of a single...

I have measured the total system draw of a single SDS CPI system at 1.69 amps. Thats at 2700 RPM and 6 cylinders. Thats a pretty modest load, and there is a vast selection of low cost, lightweight...
Forum: Traditional vs. Alternative Powerplants 05-30-2022, 07:54 AM
Replies: 23
Views: 1,866
Posted By Toobuilder
Yes, SDS pioneered this capability years ago and...

Yes, SDS pioneered this capability years ago and it works. My 330+ HP (dyno numbers) 540 runs just fine on regular car gas from the corner gas station thanks to the adjustability of the SDS...
Forum: Electrical Systems 05-29-2022, 08:56 AM
Replies: 52
Views: 5,079
Posted By Toobuilder
My L-39 Jet has a keyed battery disconnect,...

My L-39 Jet has a keyed battery disconnect, mounted under an external door in the nose cone. That goes straight to the source of the issue.

My Rocket has a toggle on the master. The toggle is...
Forum: Electronic Ignition Systems 05-24-2022, 06:29 AM
Replies: 9
Views: 843
Posted By Toobuilder
Summit racing (or Jegs, etc) has wire, boots and...

Summit racing (or Jegs, etc) has wire, boots and terminals in bulk. Any size and color under the rainbow.
Forum: RV Building Tips/Techniques 05-20-2022, 07:55 AM
Replies: 33
Views: 3,221
Posted By Toobuilder
Yep, that looks like foam rubber. Maybe grab a...

Yep, that looks like foam rubber. Maybe grab a small chunk and hit it with a lighter and see what it does. The stuff my Rocket builder used was wildly flamable. Not only did it readily burst into...
Forum: Traditional Aircraft Engines 05-20-2022, 07:45 AM
Replies: 3
Views: 484
Posted By Toobuilder
I'd be interested to see how they achieve a leak...

I'd be interested to see how they achieve a leak free seal around the pushrod tubes and cylinder bases. It "looks" like there is no positive seal there. If there IS contact with the pushrod tubes,...
Forum: Glass Cockpit 05-17-2022, 10:43 PM
Replies: 5
Views: 419
Posted By Toobuilder
May take some iteration to narrow down the k...

May take some iteration to narrow down the k factor, but its prettey simple math.
Forum: Electrical Systems 05-17-2022, 10:41 PM
Replies: 59
Views: 5,810
Posted By Toobuilder
Generator is direct drive to the spline coupling.

Generator is direct drive to the spline coupling.
Forum: RV General Discussion/News 05-10-2022, 01:07 PM
Replies: 20
Views: 2,421
Posted By Toobuilder
The recirculating action of the efi (note lower...

The recirculating action of the efi (note lower case, brand agnostic) is magic on hot starts. The hot fuel firewall forward is quickly flushed out and replaced with the cooler stuff from the tanks -...
Forum: RV General Discussion/News 05-10-2022, 12:56 PM
Replies: 10
Views: 800
Posted By Toobuilder
Thumbs up Thats some good news right there. At least it...

Thats some good news right there. At least it will take things in the right direction if it doesn't wash it all out.

Thanks for the insight everyone. Will report back when this is resolved.
Forum: RV General Discussion/News 05-10-2022, 06:39 AM
Replies: 10
Views: 800
Posted By Toobuilder
Clearly its easier to squeeze than UN squeeze,...

Clearly its easier to squeeze than UN squeeze, but the basic question remains: does a sharper TE fly higher or lower? If the sharper TE flies lower, its going to make my right roll condition worse....
Forum: RV General Discussion/News 05-09-2022, 10:59 PM
Replies: 10
Views: 800
Posted By Toobuilder
Question Aileron Squeeze Question

I have read penty here concerning the often dramatic difference the radius of the folded TE makes. But what I cant seem to find through a search is what the nature of the change is, aerodynamically....
Forum: RV Building Tips/Techniques 05-02-2022, 04:58 PM
Replies: 9
Views: 838
Posted By Toobuilder
I like the .750 drip hose from the big box home...

I like the .750 drip hose from the big box home stores. Light and cheap.
Forum: RV Ongoing Maintenance Issues 05-01-2022, 08:57 AM
Replies: 2
Views: 317
Posted By Toobuilder
I use a variety of carcases with my Monster...

I use a variety of carcases with my Monster retreads, but I typically run very high pressures - 45+ PSI. I also have let them leak down significantly (25 ish), and it makes no difference on the...
Forum: RV General Discussion/News 04-23-2022, 12:47 PM
Replies: 35
Views: 5,356
Posted By Toobuilder
I also flew an "Old Crow" for a decade or so... ...

I also flew an "Old Crow" for a decade or so... I'll see if the current owner wants to contact you


https://www.airport-data.com/images/aircraft/000/655/655472.jpg
Forum: RV Building Tips/Techniques 04-23-2022, 08:25 AM
Replies: 4
Views: 437
Posted By Toobuilder
Piano hinge wherever possible. Essentially zero...

Piano hinge wherever possible. Essentially zero spacing and self sealing. Also lightning fast to remove/install.
Forum: ADS-B 04-13-2022, 05:35 PM
Replies: 7
Views: 705
Posted By Toobuilder
Ok, light bulb just went off. This calibration...

Ok, light bulb just went off. This calibration is done while the pitot static system is being exercised by a huffer/puffer test set like a TTU-205. Other transponders I've installed were looking at...
Forum: ADS-B 04-12-2022, 06:46 PM
Replies: 7
Views: 705
Posted By Toobuilder
Yes, yes, yes, and not sure. I guess I'm...

Yes, yes, yes, and not sure. I guess I'm unclear on the "calibrate" function. Will have to open up the sensor page and look for that command. Is it "start", "go", or something intuitive?
Forum: ADS-B 04-11-2022, 06:23 PM
Replies: 7
Views: 705
Posted By Toobuilder
Question GTX335 config Help- No Altitude Display

Just installed a 335 using the little Garmin altitude encoder and the internal GPS. Though I can navigate to the altitude correction page and the field elevation is approximately right, when I go...
Forum: Electrical Systems 04-03-2022, 08:56 AM
Replies: 3
Views: 668
Posted By Toobuilder
Ive been flying with just USB power ports in...

Ive been flying with just USB power ports in back, and on shorter flights we dont even plug it in. As for a data source, most devices in the cockpit are streaming now anyway so the internal GPS on...
Forum: RV-14 03-26-2022, 09:11 AM
Replies: 15
Views: 1,329
Posted By Toobuilder
I mounted my Dynon AND the generic heated tube...

I mounted my Dynon AND the generic heated tube off a Mooney on the bellcrank inspection panels themselves on both the Rocket and the RV-8. In both cases, the airplanes were first flown in the "as...
Forum: RV-4 03-26-2022, 09:01 AM
Replies: 11
Views: 1,644
Posted By Toobuilder
My total inlet area is a touch under 45, and I'm...

My total inlet area is a touch under 45, and I'm also planning to choke it down a bit.

Big disclaimer: my outlet scheme uses augmentor tubes, so I have an advantage at low speed and high power that...
Forum: Traditional Aircraft Engines 03-26-2022, 08:41 AM
Replies: 18
Views: 2,398
Posted By Toobuilder
You dont need big compression to get to 300. I...

You dont need big compression to get to 300. I have 8.5 pistons and the stock D4A5 camshaft and I did significantly better than 330 on the dyno. While the absolute number may be suspect, I have...
Forum: Traditional Aircraft Engines 03-26-2022, 08:21 AM
Replies: 109
Views: 7,954
Posted By Toobuilder
Cant speak for Greg but I pull a bunch of timing...

Cant speak for Greg but I pull a bunch of timing out (17 degrees at TO power), effective cooling, spot on mixture distribution, and full engine monitoring. I have run my real world "worst" case...
Forum: RV-4 03-25-2022, 08:42 AM
Replies: 11
Views: 1,644
Posted By Toobuilder
My total exit area on my Rocket is 39 square...

My total exit area on my Rocket is 39 square inches. It cools too well, so I'm going to choke it down to 36.

I'm making more than 2X the power of the OP, so not apples to apples, but does...
Forum: Traditional Aircraft Engines 03-25-2022, 08:29 AM
Replies: 109
Views: 7,954
Posted By Toobuilder
I think the "fallacy" highlighted is: "...Don't...

I think the "fallacy" highlighted is:

"...Don't change compression because it reduces detonation margin and you will want that margin when you hit a seagull and your CHT runs away..."

Agree,...
Forum: Traditional Aircraft Engines 03-20-2022, 09:09 AM
Replies: 22
Views: 1,664
Posted By Toobuilder
That's the understatement of the year right...

That's the understatement of the year right there. I'd call that the "nuclear option". Absolute overkill on every front - cost, weight, complexity...

This is an OIL DRAIN!
Forum: Traditional Aircraft Engines 03-20-2022, 09:03 AM
Replies: 22
Views: 1,664
Posted By Toobuilder
I'm another long time user of "corner auto parts...

I'm another long time user of "corner auto parts hose" and the constant tension clamps. Clamps are widely available from all the typical industrial supply places, (grainger, McMaster, MSC, etc), as...
Forum: Traditional Aircraft Engines 03-19-2022, 09:40 AM
Replies: 109
Views: 7,954
Posted By Toobuilder
Since I have also run a 540 across the Ly-Con...

Since I have also run a 540 across the Ly-Con dyno recently, I just thought I'd add another data point to the "dyno methodology" aspect of this discussion.

Essentially stock D4A5 (8.5 CR) with...
Forum: Traditional Aircraft Engines 03-12-2022, 11:07 AM
Replies: 109
Views: 7,954
Posted By Toobuilder
Intuitively, pulling a bunch of timing out...

Intuitively, pulling a bunch of timing out increases detonation margin, but how much, who knows? I have data to show that you dont lose much TO power with a big retard, but thats all I was...
Forum: Traditional Aircraft Engines 03-12-2022, 08:10 AM
Replies: 109
Views: 7,954
Posted By Toobuilder
However, short of turbonormalizing, a bump in CR...

However, short of turbonormalizing, a bump in CR does provide instant gains in combustion efficiency at altitude. I considered this route for the Rocket for exactly the same reason. I stuck with...
Forum: Traditional Aircraft Engines 03-11-2022, 01:38 PM
Replies: 109
Views: 7,954
Posted By Toobuilder
Slightly different way to approach the issue, but...

Slightly different way to approach the issue, but my dyno timing sweep thread might fill in some blanks:

https://vansairforce.net/community/showthread.php?t=182190
Forum: RV General Discussion/News 02-18-2022, 05:31 PM
Replies: 15
Views: 2,115
Posted By Toobuilder
This is funny... I have a low time IO-360 (PV)...

This is funny... I have a low time IO-360 (PV) that I've been hanging onto while searching for a S-1C project.

Seems we never get what we want!
Forum: RV General Discussion/News 02-11-2022, 07:21 AM
Replies: 17
Views: 1,715
Posted By Toobuilder
If the electic pump is indeed overpowering the...

If the electic pump is indeed overpowering the carb float/needle/seat then one easy test is to turn on the pump (engine off) and watch for fuel to overflow the carb. Should take no more than 30...
Forum: Traditional Aircraft Engines 02-06-2022, 09:52 AM
Replies: 27
Views: 2,457
Posted By Toobuilder
Find new friends. Cooling issues are as simple...

Find new friends.

Cooling issues are as simple as "no fire" in engine runs. Almost always one of three things:

Insufficient fuel
Insuficient Delta P
Incorrect ignition timing.
Forum: RV-10 02-06-2022, 09:46 AM
Replies: 27
Views: 8,973
Posted By Toobuilder
Yep. Always amazed at the inevitable responder...

Yep. Always amazed at the inevitable responder who highlights this "issue".

Solved as easily as an empty Gatoraide bottle or as complex as a venturi and relief tube. Even the most complex is...
Forum: West (and Southwest) 01-31-2022, 04:47 PM
Replies: 22
Views: 1,937
Posted By Toobuilder
Never had a handling fee at VGT. Tie downs is...

Never had a handling fee at VGT. Tie downs is all I've paid, and one night is waived with a 20 gallon fuel purchase (keep the reciept - they check!)
Forum: West (and Southwest) 01-30-2022, 09:01 PM
Replies: 22
Views: 1,937
Posted By Toobuilder
Vegas is a frequent weekend destination for us...

Vegas is a frequent weekend destination for us and we used to do Henderson when there was a free shuttle, but switched to VGT when that went away. Been going into VGT now for 10+ years. We also...
Forum: RV-4 01-30-2022, 07:04 AM
Replies: 16
Views: 2,045
Posted By Toobuilder
My neighbor had one. The original builder flew...

My neighbor had one. The original builder flew it as a taildragger first, and then added a one piece leaf for the mains and the typical rod for the nose. Did it so his wife could fly it. ...
Forum: RV Building Tips/Techniques 01-28-2022, 06:43 AM
Replies: 7
Views: 1,406
Posted By Toobuilder
The avoidance of 90's in the system is almost...

The avoidance of 90's in the system is almost universally reserved for the single piece AN fitting, where the passages are drilled and the intersection is sharp. And in the fuel system, its the...
Forum: RV General Discussion/News 01-16-2022, 11:29 AM
Replies: 2
Views: 550
Posted By Toobuilder
Just add a Lycoming viscosity valve and spring...

Just add a Lycoming viscosity valve and spring and see if that doesnt fix everything for you. Very, very effective at dropping oil temps. Many threads.
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