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Search: Posts Made By: HFS
Forum: Fuel Injection Systems 11-27-2022, 07:23 AM
Replies: 11
Views: 447
Posted By HFS
Bore - RSA - 5AD1

Steve - Here a couple of pics of mine, waiting to be installed on the -3 I'm building. Hope this helps. If more info is needed, just call - thx.

Inlet/Outlet "bore" = 2.313" +/- (by mechanical...
Forum: RV Building Tips/Techniques 11-25-2022, 09:27 AM
Replies: 16
Views: 3,079
Posted By HFS
My New "Steerable" DIY Tug - (For TW Aircraft)

Since my post in August of my "skid steer" tug (which I really didn't like), I have just finished (not yet in paint - sorry) a "3-wheeler" that steers like it has power steering.

Much nicer to be...
Forum: RV Building Tips/Techniques 11-24-2022, 08:22 AM
Replies: 1
Views: 381
Posted By HFS
Reusing Self-Locking NyLok Type Nuts

Just FWI - AC 43.13 - 2B Pg. 7-12 allows reusing elastic stop nuts with the minimum prevailing torque as shown. Pretty low values in relation to the initial torque values I developed when testing...
Forum: RV General Discussion/News 11-24-2022, 08:03 AM
Replies: 8
Views: 648
Posted By HFS
Testing for "Rule of Thumb" Use

I made this testing device to "run" enough drag torque tests, of all normally used AN bolts (and some anchor nuts), to generate a "Rule of Thumb" that could easily be applied to allowable torque...
Forum: Traditional Aircraft Engines 11-19-2022, 09:19 AM
Replies: 27
Views: 1,772
Posted By HFS
3-D Printed Part - Steve Melton Where Are You?

Here's a "gadget" I made to solve the problem of holding up the fuel pump "rod" when installing a new fuel pump - mostly when the engine is in place & access is restricted. Although mine is made of...
Forum: RV Building Tips/Techniques 11-16-2022, 11:37 AM
Replies: 1
Views: 296
Posted By HFS
Me Too!

I make these cowl support/rotating jigs for my builds - it sure makes the "fine tuning" work a lot easier, you don't have to have resin "drool" run down your arm when working on the bottom of the...
Forum: RV General Discussion/News 10-21-2022, 08:38 AM
Replies: 13
Views: 1,872
Posted By HFS
What the GADO (long time ago) Did To Me

When I had my Rocket AW inspection, way back when, by the local GADO rep, he would not let me call it a Harmon Rocket II. He made me list is as an RV-4 - so to this day, that's how it's listed in...
Forum: Engine Monitors 10-19-2022, 11:04 PM
Replies: 12
Views: 1,767
Posted By HFS
Cleaning A FloScan 201

It was recommended to me to use Hoppe's #9 gun cleaning fluid - fill the impeller cavity and gently rock back and forth, then expel the fluid and flush with avgas. It worked for me, but I kind of...
Forum: RV-4 10-19-2022, 08:48 AM
Replies: 4
Views: 552
Posted By HFS
Fuselage Lenth - RV4 (S/N 1136)

My sideview drawing (#26) shows the length of the fuse - from FW to centerline of aft most bulkhead, to be 167 13/16" = 13.98'. To that you would have to add the length of the TW spring/TW assembly,...
Forum: California 10-17-2022, 07:47 AM
Replies: 3
Views: 694
Posted By HFS
I Was There - 1991

Back in the day - Dave Anders, Keith Livingston & I were invited to bring our RV4's down to EDW for display at their Open House airport day, after arriving the day before - so we stayed all night...
Forum: RV Building Tips/Techniques 10-16-2022, 12:24 PM
Replies: 0
Views: 382
Posted By HFS
Alternator Belt Tension Arm - Cracking

I never liked the "fragility" of the long, slotted belt tension arm of the alternators most of us use - so I came up with a solution that has worked for me for over 20 years now:

Simply, an...
Forum: RV Building Tips/Techniques 10-16-2022, 08:59 AM
Replies: 0
Views: 490
Posted By HFS
DIY Pin Removal Tool

Disclaimer: This idea works on Molex, or their look alike type pins, that have two little bent "wings" on either side of the barrel to capture the pin in its housing. Not so much for D-sub...
Forum: RV Building Tips/Techniques 10-15-2022, 06:43 PM
Replies: 12
Views: 1,433
Posted By HFS
How To Keep A Sharpie "Going"

Two things (my opinion only):

1. Always replace the cap after each use - I mean each time you use it, not when you are done for the day, and;

2. If you take the end cap off and lightly, very...
Forum: RV Building Tips/Techniques 10-15-2022, 09:35 AM
Replies: 12
Views: 1,433
Posted By HFS
Right Angle Sharpie Marker

I saw the other day in an airplane magazine - SA/KP ? (don't remember) about someone bending a Sharpie marker to make it more "user friendly" for those hard to reach places.

I thought I should offer...
Forum: RV-8/8A 10-14-2022, 07:56 AM
Replies: 6
Views: 969
Posted By HFS
Check your PM's HFS

Check your PM's

HFS
Forum: RV Building Tips/Techniques 09-30-2022, 06:35 PM
Replies: 48
Views: 4,768
Posted By HFS
Microfasterners - Torx = 6 Lobe

What the title says:

Microfasteners calls them 6-Lobe instead of Torx.

Same-o, same-o.

HFS
Forum: Tools 09-21-2022, 07:49 AM
Replies: 7
Views: 1,388
Posted By HFS
Making A 3/16 Socket - Some of Mine

A few that I have made over the years - mostly working behind an old (legacy) panel with instrument depth getting in the way of the retaining fasteners.

The wrenches with hex handles & "wings",...
Forum: RV Building Tips/Techniques 09-19-2022, 12:14 PM
Replies: 9
Views: 1,082
Posted By HFS
Missing Lock Washers

Walt -

This "demo" was informational only - in practice, there would of course, be ss lock washers (I probably still have a couple of hundred in stock from the last build).

But thanks for pointing...
Forum: RV Building Tips/Techniques 09-18-2022, 02:51 PM
Replies: 9
Views: 1,082
Posted By HFS
Where Did I Get My "Stuff"

The socket head Allen screws (stainless steel) came from McMaster-Carr. But any good fastener house would have them. If you desire brass replacements - they are available as well.

The Allen...
Forum: RV Building Tips/Techniques 09-18-2022, 09:30 AM
Replies: 9
Views: 1,082
Posted By HFS
Changing Out Screws On Switches/Breakers

On your switches/circuit breakers, if you are using ring type terminals instead of the blade variety, this might be a "tip" of interest to you. Many of you may already be using this "mod" - but if...
Forum: RV Building Tips/Techniques 09-16-2022, 12:48 PM
Replies: 19
Views: 2,933
Posted By HFS
DIY "Clickbond"

I've posted this before, but just as a refresher - look up thread starter "Nut Plate Tip" by Dave Paule from 7-19-21 and read Post #7 - "Oakie" Clickbond Anchornuts - DIY.

HFS
Forum: RV General Discussion/News 09-13-2022, 07:45 AM
Replies: 44
Views: 4,611
Posted By HFS
Can You Say Borescope?

I've posted this before - didn't get much "traction" then, but maybe some of the posters on this thread didn't read it. It's certainly not the end all, be all of tire inflation options - but it is...
Forum: RV General Discussion/News 09-12-2022, 08:16 AM
Replies: 44
Views: 4,611
Posted By HFS
Valve Stem Extender

The valve stem is very rarely aligned perpendicular to the face of the wheel pant at the extended "contact" point. What this means is that unless you allow (somehow) for that fact - if you drill the...
Forum: RV-7/7A 09-11-2022, 09:42 AM
Replies: 20
Views: 1,817
Posted By HFS
FWIW

If you go the "custom" route - you can have any angle offset you want, i.e. if the 45* number you were using is because you thought one might be available (pre-made). But if that isn't exactly what...
Forum: RV General Discussion/News 09-07-2022, 11:03 AM
Replies: 7
Views: 791
Posted By HFS
OK - You Win!

And I'll bet your heat wasn't "dry"!

HFS
Forum: RV General Discussion/News 09-07-2022, 08:05 AM
Replies: 7
Views: 791
Posted By HFS
Todays Off Topic - How Hot Is It?

I live under the umbrella of the traffic pattern for 32R @ Lemoore NAS (NLC), and yesterday they recorded a temperature of 117*!

The day before that, over the hill (Sierra Nevada Mtns.) in Death...
Forum: RV Building Tips/Techniques 08-26-2022, 11:17 AM
Replies: 6
Views: 492
Posted By HFS
RV-4 Front Seat Cushion Support

As other posters have alluded to, the plans give no direction about the front seat cushion. Van pretty well leaves that up to you. Having said that, depending on your height, there may be as much...
Forum: RV-9/9A 08-22-2022, 07:02 PM
Replies: 7
Views: 980
Posted By HFS
Dinosaur Tanks

There was a "scratch" builder in Bakersfield, CA - Steve Ward, who built his tanks into the wing from the beginning. No "screw ons" for Steve! He was building before there was a complete set of kit...
Forum: RV Building Tips/Techniques 08-21-2022, 08:19 AM
Replies: 15
Views: 1,811
Posted By HFS
See Thread "double offset rivet set"

In post #2 of this thread (3-4-21) I show a couple of double offset back rivet sets that I made. The explanation of why they work is there. I don't know why someone doesn't offer these as an...
Forum: RV Building Tips/Techniques 08-18-2022, 03:52 PM
Replies: 16
Views: 3,079
Posted By HFS
My DIY Tug - Just One of Many

Here's a pic of my homemade tug I use on my Rocket. I used to push it around by hand, but getting too old for that now.

This one uses a 24 VDC gear motor out of a powered wheelchair, and a hand...
Forum: RV-14 08-12-2022, 07:43 AM
Replies: 10
Views: 1,703
Posted By HFS
FWIW - Using a Hand Rivet Puller

I'm sure you already know this "trick" about operating plier type tools for pulling these rivets - but, if you don't:

You don't need to leave the handles in the full open position to begin the...
Forum: RV-3 08-11-2022, 07:41 AM
Replies: 21
Views: 1,991
Posted By HFS
Things to Consider

In addition to the afore mentioned wing considerations, you should also be comfortable with the fact that this kit is basically formed "raw materials" where you do all the (read make) jigging...
Forum: RV General Discussion/News 08-05-2022, 09:05 AM
Replies: 53
Views: 10,842
Posted By HFS
Directions to Exit Runway - Oops, Too Late!

Just an FYI - The incident I'm about to relate happened in (almost) the last century - so this kind of stuff is pretty much ongoing because of the hectic nature of the arrivals. No blame, just a...
Forum: Rocket 08-02-2022, 09:09 PM
Replies: 4
Views: 972
Posted By HFS
F1 - C-FGXB

Thank you all for your help - Erick was kind enough to call me within 15 minutes +/-.

Pretty amazing how all encompassing this forum is when info transfer like this needed. Wonderful to have such a...
Forum: Rocket 08-02-2022, 02:38 PM
Replies: 4
Views: 972
Posted By HFS
F1 Rocket - C-FGXB

If anyone knows how to contact Eric O'Conner - owner of C-FGXB F1 Rocket, I would really appreciate a call from him regarding the Stan Dzik Award he received at OSH.

Thank you in advance - David...
Forum: RV Building Tips/Techniques 08-01-2022, 01:24 PM
Replies: 13
Views: 1,825
Posted By HFS
Pop Rivet Mandrels

Disclaimer: This may not be for you - as you can lose a mandrel each time you make a dimple IF you use a pneumatic/cordless puller. If you don't pull to "break" - you're good to go until you...
Forum: RV Ongoing Maintenance Issues 07-14-2022, 07:21 AM
Replies: 22
Views: 1,849
Posted By HFS
An Alternative Approach - MYO

I made my own tie down rings for the reason given above - needed a bigger ring to accept any/all tie down chains encountered on parking ramps around the country. Just simpler for me to have a "one...
Forum: RV Building Tips/Techniques 07-11-2022, 10:46 AM
Replies: 0
Views: 462
Posted By HFS
Painting - 3M PPS Cleaning Cup

For those of you who do your own painting & use the 3M PPS cup system, here is a system I developed you may be interested in (or not), for quickly cleaning your gun when you are finished.

I mount a...
Forum: Propellers 07-09-2022, 07:56 AM
Replies: 5
Views: 1,103
Posted By HFS
My MT Propeller Saga - FWIW

I have a 3-blade CS MT installed on my HRII since 2002 (S/N 02477).

Followed factory recommended OH intervals of 72 calendar months without any untoward results until 2017, when 32 of 33 of the...
Forum: Traditional Aircraft Engines 07-07-2022, 07:35 AM
Replies: 78
Views: 9,271
Posted By HFS
Residual Oil in Filter At Oil Change

Can users please tell me how you deal with the residual oil inside the housing at oil change?

Thank you - HFS
Forum: Tools 07-05-2022, 03:02 PM
Replies: 6
Views: 2,245
Posted By HFS
CP 450 Compression Yoke

Gave it away to a good home.

HFS
Forum: RV Building Tips/Techniques 07-02-2022, 07:34 PM
Replies: 5
Views: 937
Posted By HFS
FYI - 3M 2216 & Avgas

I had a discussion with a 3M engineer back in 2011 re/the compatibility of 3M 2216 ScotchWeld adhesive & avgas.

He told me that 2216 could be used in contact with avgas with no adverse effects. ...
Forum: Tools 06-30-2022, 07:40 AM
Replies: 7
Views: 936
Posted By HFS
Finger Nose Radius

One thing for consideration is that the Mittler (and most other brakes, for that matter), have a very small radius at the "nose" of each bending finger - making a concern for fatigue when bending...
Forum: RV Ongoing Maintenance Issues 06-22-2022, 10:56 AM
Replies: 5
Views: 1,155
Posted By HFS
What I Did - To Fix That

It's too bad the manufacturers make their sending unit with this "fatal" flaw. If you don't know about the possibility of the shaft rotating (and separating the soldered wire from it) before hand,...
Forum: RV Building Tips/Techniques 06-11-2022, 08:20 AM
Replies: 20
Views: 2,242
Posted By HFS
What I Did

Probably not "kosher" - but what I did:

Silver brazed a nut on aft flange.

Edit: I don't think I understood your question - I had a different need. I needed to clamp a longeron flange between the...
Forum: RV Building Tips/Techniques 06-10-2022, 02:34 PM
Replies: 6
Views: 1,183
Posted By HFS
Tach Time vs Hobbs - Old School

In the old days, before the advent of all of the electronic information gathering devices we have today, we relied on mechanical "trickery" to help slow down the hands of time. Most of us used the...
Forum: RV General Discussion/News 06-10-2022, 07:57 AM
Replies: 5
Views: 1,100
Posted By HFS
Difference Between Tach & Hobbs

Almost 350 hours between the two - why so much. Mine differ, but over 1400 hours only 60 or so hours.

No criticism here, just wondering what "drives" their starting point.

Thanks

HFS
Forum: RV Building Tips/Techniques 06-03-2022, 08:31 AM
Replies: 5
Views: 1,086
Posted By HFS
FYI - Pro Seal As An Adhesive

PPG Aerospace (maker of "Pro Seal") doesn't even list shear strength in their TDS (Technical Data Sheet) - only tensile strength, 370 psi - not very much when compared to the shear strength of 3M's...
Forum: RV-10 05-31-2022, 04:43 PM
Replies: 4
Views: 655
Posted By HFS
What I Have

In my Rocket I have an IO-540C4-B5, that dynoed @ 288 HP, but none of the fancy stuff like yours.

I installed an MTV-9-B/198-52, at the suggestion of the factory in Germany, back in 2002. 20 years...
Forum: RV General Discussion/News 05-30-2022, 10:53 AM
Replies: 3
Views: 821
Posted By HFS
Spectre Chrome

I had my Rocket spinner done by MT almost 20 years ago, and except for a spot around one of the attach screws, it has been excellent.

I would do it again, but the one thing I would be more careful...
Forum: RV Building Tips/Techniques 05-27-2022, 06:00 PM
Replies: 14
Views: 2,307
Posted By HFS
FWIW - Using The Next Available Hole

The math for using the next available axle nut hole is as follows:

Each "flat" advancement moves the nut .0105" inboard. The absolute best hole diameter you could get using a #30 drill is .128" -...
Forum: RV Building Tips/Techniques 05-27-2022, 08:02 AM
Replies: 14
Views: 2,307
Posted By HFS
Face The Nut - On A Lathe

If you feel the need to get very precise, you can "face" the nut on an engine lathe, or vertical mill if you prefer.

Since you know the TPI is 16 - you know that each revolution = .063" advancement....
Forum: RV-3 05-25-2022, 09:04 AM
Replies: 6
Views: 1,070
Posted By HFS
What I Did On My -3

The attached pics are for ailerons/elevators & a 2-piece, 1" web strap (velcro overlap closure), with insulated, spring type laboratory clamps on each end, for the rudder. The cross "brace" is to...
Forum: RV Building Tips/Techniques 05-23-2022, 08:54 AM
Replies: 20
Views: 1,922
Posted By HFS
Sandwich

Sorry about the quality of this pic - it was taken with a Polaroid (remember them?) in 1986 - but it shows the basic idea of "sandwiching" the rib web between two pieces of plywood to help eliminate...
Forum: RV Building Tips/Techniques 05-19-2022, 05:39 PM
Replies: 1
Views: 370
Posted By HFS
ORB (O-ring Boss) Torque Specs

Do a Google search for "ORB Torque Specs" and your question will be answered.

HFS
Forum: California 05-16-2022, 08:46 PM
Replies: 1
Views: 562
Posted By HFS
Pre Buy Inspection

Check your PM's

Thx

HFS
Forum: RV General Discussion/News 05-13-2022, 08:32 AM
Replies: 26
Views: 4,422
Posted By HFS
Cable Shackle For Rudder Horn

Here are the specs for different cable shackles (from Genuine AC Hdwe).

We typically use AN115-21, which already has a .188" hole diameter. If that's not large enough for you (even though the plans...
Forum: Traditional Aircraft Engines 05-08-2022, 08:33 AM
Replies: 13
Views: 1,152
Posted By HFS
+1 on Blackstone! I used to get free analysis...

+1 on Blackstone!

I used to get free analysis from Chevron because of a business association - paying to have Blackstone do it yields a much better result.

Use them, you won't be sorry.

HFS
Forum: RV Building Tips/Techniques 05-08-2022, 08:29 AM
Replies: 0
Views: 390
Posted By HFS
Dedicated Pitot/Static Ports

I'm sure this idea is not new - just haven't seen it here before, so -

I build in to the pitot/static system a set of dedicated ports to facilitate easy testing - for whatever reason.

On...
Forum: RV Building Tips/Techniques 05-02-2022, 11:08 AM
Replies: 9
Views: 1,168
Posted By HFS
What's Different About It?

Couple of things:

1. If Van's corrugated tubing is 3/4" o.d. w/ .093" corrugation "thickness" & the butyrate tubing is 3/4" o.d. w/ .032 wall thickness; then, the usable interior space of the clear...
Forum: RV Building Tips/Techniques 05-02-2022, 09:44 AM
Replies: 9
Views: 1,168
Posted By HFS
Refreshing An Old Thread - Conduit Choices

This is a "refresh" of Alex Peterson's post in 2007 about using Tenite Butryate tubing as a wiring conduit. He did not attach pics - which I think may be helpful.

The 1/2 & 3/4" diameters, with...
Forum: RV Ongoing Maintenance Issues 05-01-2022, 03:03 PM
Replies: 2
Views: 419
Posted By HFS
My Experience Exactly - Thank You

Thank you Michael - I was just wondering if I was missing something to get rid of the "shakes".

David
Forum: RV Ongoing Maintenance Issues 05-01-2022, 09:49 AM
Replies: 2
Views: 419
Posted By HFS
Questions for Tire Choice - HR II

Any "Rocketeers" out there willing to chime in - I would appreciate it.

Anybody using AirHawk 5.00x5 - 6 ply?

If yes - what tire pressure works for you.

If yes - shimmy?

How much & @ what...
Forum: RV Building Tips/Techniques 04-24-2022, 09:01 AM
Replies: 0
Views: 318
Posted By HFS
Realigning FW Hinge Eyes for Cowling Fit

Sometimes it is necessary to "realign" the top/side cowl hinge eyes to make the pin installation easier. The cowl split line hinges can also be out of alignment, but this tool is only for use on the...
Showing results 1 to 64 of 468

 
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