VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Search Forums
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Showing results 1 to 62 of 114
Search took 0.01 seconds.
Search: Posts Made By: Hartstoc
Forum: RV-14 Today, 10:51 AM
Replies: 6
Views: 224
Posted By Hartstoc
Back in the days of CAFE research we did look at...

Back in the days of CAFE research we did look at this on a couple of aircraft, but it is a very installation specific question.

The same issue should be addressed with many of the Superior forward...
Forum: RV-14 Today, 08:14 AM
Replies: 6
Views: 224
Posted By Hartstoc
Not all blast tubes are created equal-

Just be aware that most blast tubes for belt driven alternators out there are of questionable value, and may actually be counter productive. Most are installed just inside the lip of cooling inlets...
Forum: RV General Discussion/News 09-24-2018, 07:27 AM
Replies: 24
Views: 1,575
Posted By Hartstoc
I believe that what you say here is true if the...

I believe that what you say here is true if the the aircraft is still moving forward at high velocity such that a great deal of lift is acting on the canopy, but Iím concerned that the struts could...
Forum: Glass Cockpit 09-23-2018, 12:18 PM
Replies: 28
Views: 2,523
Posted By Hartstoc
I’m in the process of ordering an all-Garmin G3X...

I’m in the process of ordering an all-Garmin G3X touch system to replace my Dynon D-100/D-120 super-brite 7” pair. Although I have room for one 10” and one 7”portrait G3X, and would like to be able...
Forum: RV General Discussion/News 09-23-2018, 09:14 AM
Replies: 24
Views: 1,575
Posted By Hartstoc
THANKS to all for your “ruthlessly helpful”...

THANKS to all for your “ruthlessly helpful” suggestions. After a bit of thought, I came up with a way of cutting hinge slots without even removing the canopy. Photos with captions of this process...
Forum: RV General Discussion/News 09-16-2018, 09:28 PM
Replies: 24
Views: 1,575
Posted By Hartstoc
Thank you for this, your points are well taken....

Thank you for this, your points are well taken. Iíd add that where the realm of bailouts from homebuilts is concerned, the term ďeyeball engineeringĒ can pretty much be applied to all designs, even...
Forum: RV General Discussion/News 09-16-2018, 09:04 PM
Replies: 24
Views: 1,575
Posted By Hartstoc
Well, given that the original design had slots...

Well, given that the original design had slots and no gas springs, and virtually all tilt-ups now have gas springs and no slots, we are all in new territory. Iíve certainly considered the possibility...
Forum: RV General Discussion/News 09-16-2018, 04:30 PM
Replies: 24
Views: 1,575
Posted By Hartstoc
Iím still pondering this important comment, and I...

Iím still pondering this important comment, and I may yet cut these slots. For now, after studying the various posts on taking off with an unlatched canopy, or having a canopy inadvertantly unlatch...
Forum: RV General Discussion/News 09-16-2018, 03:08 PM
Replies: 24
Views: 1,575
Posted By Hartstoc
I did consider this, but was concerned that...

I did consider this, but was concerned that flexing during normal operation could lead to random failures. The method I devised of weakening the bolt shafts is subject to very little flexing, if any,...
Forum: RV General Discussion/News 09-10-2018, 01:10 PM
Replies: 24
Views: 1,575
Posted By Hartstoc
Thanks for the idea- If my breakaway bolts ever...

Thanks for the idea- If my breakaway bolts ever give me problems, Iíll resort to the prop-rod idea, but it is kind of nice having the gas struts. Working on the slots now. - Otis
Forum: RV General Discussion/News 09-10-2018, 08:52 AM
Replies: 24
Views: 1,575
Posted By Hartstoc
Modification for assured tilt-up canopy jettison-

I’ve just launched into an aerobatic training program in my tilt-up RV-7A. After shelling out big bucks for the required parachutes, I began to wonder if the gas springs on my tilt-up could thwart or...
Forum: Glass Cockpit 08-31-2018, 03:30 PM
Replies: 102
Views: 11,089
Posted By Hartstoc
Hooray!

Now I can see the best way to update my Dynon D100/120 based panel. This news is timely, as I was about to pull the trigger for a pair of Skyview HDX touch displays along with a corral full of remote...
Forum: Glass Cockpit 08-26-2018, 09:36 AM
Replies: 6
Views: 484
Posted By Hartstoc
Thanks for all this excellent food for thought....

Thanks for all this excellent food for thought. Life would be easier if Dynon had managed to design the skyview system to receive connectors from the D-series products in a plug and play fashion, but...
Forum: Glass Cockpit 08-25-2018, 11:29 PM
Replies: 6
Views: 484
Posted By Hartstoc
Thanks, Ken- I think that gives me a good planĒAĒ...

Thanks, Ken- I think that gives me a good planĒAĒ to try.- Otis
Forum: Glass Cockpit 08-25-2018, 08:15 AM
Replies: 6
Views: 484
Posted By Hartstoc
Coupling Dynon legacy d100/120 to Garmin GTNX50 Question

I’m hoping someone out there can offer advice/experience with adding new Garmin Navigator capabilities to an existing legacy Dynon system.

I’m really quite happy with my fully populated Dynon...
Forum: Electrical Systems 07-28-2018, 09:26 AM
Replies: 46
Views: 9,002
Posted By Hartstoc
Link to follow-on thread

I recently posted a thread about the process of removing the belt-driven alternator from my plane after proving out the Spline-drive installation to my satisfaction. I thought maybe a link to that...
Forum: Electronic Ignition Systems 07-27-2018, 11:29 AM
Replies: 68
Views: 6,536
Posted By Hartstoc
Touché! But really the only moving part in the...

Touché! But really the only moving part in the ignition itself is the ring securely bolted to the flywheel that carries the little triggering magnets. By comparison P-mags are a hot mess of moving...
Forum: Electronic Ignition Systems 07-27-2018, 10:54 AM
Replies: 68
Views: 6,536
Posted By Hartstoc
Good points! #2- yes, a reliable hardware based...

Good points! #2- yes, a reliable hardware based ďlimpĒ mode can be acceptable, but Iíd have to climb the learning curve to the point of being able to bench test the unit to satisfy myself that it was...
Forum: Electronic Ignition Systems 07-27-2018, 10:01 AM
Replies: 68
Views: 6,536
Posted By Hartstoc
1- didn’t know that-thanks! With the lightspeeds...

1- didn’t know that-thanks! With the lightspeeds you can specify the cut-out and cut-in revs, which then remain fixed.
2-Granted, but I don’t like software in critical components. An optional limited...
Forum: Electronic Ignition Systems 07-26-2018, 11:44 PM
Replies: 68
Views: 6,536
Posted By Hartstoc
Actually, when you shut down the ignition...

Actually, when you shut down the ignition completely on a 200HP Lyc. operating at or near WOT, it is instantly transformed from a huge power generator(the real driving force behind runaway props) to...
Forum: Reviews 07-21-2018, 08:47 AM
Replies: 9
Views: 1,118
Posted By Hartstoc
I’ll second that. The really cool thing is that...

I’ll second that. The really cool thing is that you can lock down all control surfaces without getting out of the plane or even taking your feet off the brakes. This came in handy on a recent trip...
Forum: Electronic Ignition Systems 07-19-2018, 11:45 AM
Replies: 68
Views: 6,536
Posted By Hartstoc
I chose Lightspeed Plasma IIIís mainly for three...

I chose Lightspeed Plasma IIIís mainly for three reasons:
1- Over-rev protection(not a issue for fixed pitch). Iím personally aware of three runaway prop events.
2- Software-free. Discreet logic is...
Forum: RV-12 07-15-2018, 08:51 AM
Replies: 135
Views: 18,215
Posted By Hartstoc
Looking at this photo, Iím struck by three...

Looking at this photo, Iím struck by three things. 1- The surface finish of the entire part (ignoring the paint) is riddled with irregulaities- not done to the standard Iíd expect on a modern...
Forum: Electrical Systems 07-14-2018, 06:17 PM
Replies: 46
Views: 9,002
Posted By Hartstoc
Actually, because the built in fan can ONLY draw...

Actually, because the built in fan can ONLY draw air that has passed through the scat tube and shroud, cool-down is very rapid after a heat-soaked startup, even while taxiing on the ramp. In flight,...
Forum: RV General Discussion/News 07-10-2018, 12:45 PM
Replies: 9
Views: 1,094
Posted By Hartstoc
Ha! Sorry for the unintended slur! My concern...

Ha! Sorry for the unintended slur! My concern would generaly regard the American Canada Goose(and its feathered bretheren) Wait- Canada is America too- sheesh!
Forum: RV General Discussion/News 07-10-2018, 11:04 AM
Replies: 9
Views: 1,094
Posted By Hartstoc
Funny, I actually started this thread after...

Funny, I actually started this thread after having watched this very video yesterday! My attitude toward skydiving has always been ”Who would want to jump out of a perfectly good airplane?”, but $5K...
Forum: RV General Discussion/News 07-09-2018, 11:44 PM
Replies: 359
Views: 77,846
Posted By Hartstoc
I donít see any glaring holes in the product...

I donít see any glaring holes in the product line- could it be that Vanís job is done? He has applied his magic to a full range of choices, all of which share a genius for the most efficient possible...
Forum: RV General Discussion/News 07-09-2018, 02:48 PM
Replies: 9
Views: 1,094
Posted By Hartstoc
Hello, David! - that is worth considering where...

Hello, David! - that is worth considering where the brackets attach to the longerons. Melís comments make me think that simply removing the gas struts anytime you are going to the trouble of wearing...
Forum: RV General Discussion/News 07-09-2018, 01:16 PM
Replies: 9
Views: 1,094
Posted By Hartstoc
Tilt-up Canopy Jettison Question-

I’ve looked through a number of older threads about issues related to the possibility of emergency jetisoning the canopy. I’m about to embark on an extended series of aerobatic training flights in...
Forum: RV General Discussion/News 07-08-2018, 06:08 PM
Replies: 11
Views: 3,455
Posted By Hartstoc
I stand corrected, utility category! It wasn’t...

I stand corrected, utility category! It wasn’t necessary, but I’d have been willing to accept as low as an 85# baggage limit to achieve my “nimbleness” goals, but fortunately my wife and I combine to...
Forum: RV General Discussion/News 07-08-2018, 04:22 PM
Replies: 11
Views: 3,455
Posted By Hartstoc
The pulley and belt amount to about 1.5#, but as...

The pulley and belt amount to about 1.5#, but as someone noted the brackets, not to mention the heavy guage cable to the nose, and the alternator itself adds up. My brackets were aluminum, but many...
Forum: RV General Discussion/News 07-08-2018, 10:30 AM
Replies: 11
Views: 3,455
Posted By Hartstoc
Thanks for the kind words! Iím certainly grateful...

Thanks for the kind words! Iím certainly grateful for all the experience shared by others on VAF, and the feedback and questions generated in response to my own posts here can be priceless and...
Forum: RV General Discussion/News 07-08-2018, 08:06 AM
Replies: 14
Views: 1,348
Posted By Hartstoc
Michael makes a good point, but look carefully...

Michael makes a good point, but look carefully for even traces of oil on the forward face of the flywheel or inside the cowl ahead of the flywheel, as this would pretty much confirm the source is the...
Forum: RV General Discussion/News 07-07-2018, 10:11 AM
Replies: 11
Views: 3,455
Posted By Hartstoc
Kissing the belt-driven alternator goodbye forever-

I thought some of you might take interest in the process of complete removal of the belt-driven alternator from my RV-7A, including the drive pulley cast into the Lycoming flywheel. This link will...
Forum: RV General Discussion/News 06-04-2018, 08:48 AM
Replies: 21
Views: 1,568
Posted By Hartstoc
Bace turned out to be easy-peazey.

Oop- Bace should be “Brace” above, can’t edit header-

It turned out that the studs securing my B&C spline-drive primary alternator were of sufficient length to also secure a simple aluminum strut...
Forum: RV General Discussion/News 06-01-2018, 11:54 PM
Replies: 21
Views: 1,568
Posted By Hartstoc
OK- UNCLE!

OK, Uncle! Iím happy with this installation, but cannot ignore the consistent cautionary sentiments of a bunch of guys whoís sole motives are keeping one another out of trouble.

Fortunately, there...
Forum: RV General Discussion/News 06-01-2018, 10:52 PM
Replies: 21
Views: 1,568
Posted By Hartstoc
Well, I wish I could invite all of you guys over...

Well, I wish I could invite all of you guys over to poke and prod this thing to your heartís content. Itís an oil line, and I think you would walk away feeling like it is a damned good one, just as...
Forum: RV General Discussion/News 06-01-2018, 09:02 PM
Replies: 21
Views: 1,568
Posted By Hartstoc
Hmmn- If you study the installation with care,...

Hmmn- If you study the installation with care, and imagine a triangle that the soft-coupling of these two lines forms between the midpoint of the exposed 13.5” free span of the stainless tube, the...
Forum: RV General Discussion/News 06-01-2018, 09:33 AM
Replies: 21
Views: 1,568
Posted By Hartstoc
Yes- but note that the forward fitting is just a...

Yes- but note that the forward fitting is just a few inches away, so the pushrod tube is being only being used as a minor stabilizer here- no significant loads are being imposed upon it. Its primary...
Forum: RV General Discussion/News 06-01-2018, 08:57 AM
Replies: 21
Views: 1,568
Posted By Hartstoc
Actually, the baffle has ample freedom of...

Actually, the baffle has ample freedom of movement in that one axis to acommodate thermal expansion. It is the in-plane stability that I wanted to impart to the oil line, and the RTV is hard-cured to...
Forum: RV General Discussion/News 05-31-2018, 07:37 PM
Replies: 21
Views: 1,568
Posted By Hartstoc
Great question!- I regarded the Bulkhead...

Great question!- I regarded the Bulkhead pass-through as an important support point for the oil lin for the very reason that Dave pointed out a few entries back. The baffle is securely bolted to the...
Forum: RV General Discussion/News 05-31-2018, 02:01 PM
Replies: 21
Views: 1,568
Posted By Hartstoc
Well, I don’t have a good justification, but I...

Well, I don’t have a good justification, but I really did end up feeling like this installation gives me some advantages as listed listed over the Lycoming part, which has always seemed a bit too...
Forum: RV General Discussion/News 05-31-2018, 12:08 PM
Replies: 21
Views: 1,568
Posted By Hartstoc
The run may look longer in the photo than it...

The run may look longer in the photo than it really is, but It is well supported against vibration along its full length. Just out of the picture to the right is where it is RTV-potted into the very...
Forum: RV General Discussion/News 05-31-2018, 11:01 AM
Replies: 21
Views: 1,568
Posted By Hartstoc
An Alternate routing for the rear-governor SS oil line.

I needed to fabricate a stainless steel oil line for the installation of my new Hartzell Composite propellor. The usual pathway below the cylinders was daunting, so I came up with an alternate route...
Forum: Electrical Systems 05-30-2018, 12:07 PM
Replies: 46
Views: 9,002
Posted By Hartstoc
Hello again Dan- my review of the thread also...

Hello again Dan- my review of the thread also made me realize that I never properly addressed your points quoted above- sorry about that. I really do appreciate everyone’s questions, comments, and...
Forum: Electrical Systems 05-30-2018, 08:48 AM
Replies: 46
Views: 9,002
Posted By Hartstoc
Further thoughts

Dan- I may have been a bit too conciliatory in my previous response. Rereading my original post, it clearly references all temperatures as exit air temperatures, and it nowhere suggests that...
Forum: Electrical Systems 05-29-2018, 04:37 PM
Replies: 28
Views: 3,806
Posted By Hartstoc
Additional note

I am not envisioning a one battery on/one battery off strategy. Instead, the on-off-on master switch allows one soft-connected battery and one hard-connected battery. The system will have absolute...
Forum: Electrical Systems 05-29-2018, 04:21 PM
Replies: 28
Views: 3,806
Posted By Hartstoc
I agree that running batteries parallel is...

I agree that running batteries parallel is perfectly OK, and that they do not even need to be a matched set(that’s classic Bob Nuckolls), but embarassingly personal experience suggests that when a...
Forum: Electrical Systems 05-29-2018, 09:28 AM
Replies: 28
Views: 3,806
Posted By Hartstoc
Given the huge combined Ampacity of the EXT900ís,...

Given the huge combined Ampacity of the EXT900ís, it may not be a problem as you say. The one concern there(if your airplane is ďelectron dependentĒ) would be that it might be possible to drain both...
Forum: Electrical Systems 05-28-2018, 02:20 PM
Replies: 46
Views: 9,002
Posted By Hartstoc
OK, touché’- you make a completely valid point-...

OK, touché’- you make a completely valid point- and I thank you for that- but the rectifier assembly is not provided with a thermocouple well like the cylinders are. I selected the location for mine...
Forum: Electrical Systems 05-27-2018, 09:56 AM
Replies: 28
Views: 3,806
Posted By Hartstoc
You’ve got the right idea! I think the very best...

You’ve got the right idea! I think the very best forms of redundancy are designed such that you are using the “emergency backup system” as part of routine, everyday flight, so good for you! I worry...
Forum: Electrical Systems 05-26-2018, 03:50 PM
Replies: 28
Views: 3,806
Posted By Hartstoc
Yes, this is exactly the type of scenario that...

Yes, this is exactly the type of scenario that requires really good, truly redundant design. First line of defence is OV protection like that provided by B&C regulators that completely shuts down the...
Forum: Electrical Systems 05-26-2018, 03:08 PM
Replies: 28
Views: 3,806
Posted By Hartstoc
Sorry- I did not mean to imply that EarthX is not...

Sorry- I did not mean to imply that EarthX is not generally very open. My own exchanges with them have been delightful and reassuring. This led to my purchase of two new EXT900-VNT’s.

I was just...
Forum: Electrical Systems 05-26-2018, 02:47 PM
Replies: 46
Views: 9,002
Posted By Hartstoc
Well, the answer to first question is going to be...

Well, the answer to first question is going to be installation specific, a little different for each aircraft, but Iíll go out on a limb and guess that the answer is, to some degree, yes for nearly...
Forum: Electrical Systems 05-26-2018, 09:17 AM
Replies: 46
Views: 9,002
Posted By Hartstoc
Dan- thanks for this- good stuff that I will...

Dan- thanks for this- good stuff that I will study in detail. In response to the your last sentence, the shroud IS a personal preference that has given me the confidence to make the spline drive my...
Forum: Electrical Systems 05-26-2018, 08:53 AM
Replies: 46
Views: 9,002
Posted By Hartstoc
Thanks for the Question- you really have two...

Thanks for the Question- you really have two choices for electron dependent aircraft, dual alternators or a well designed dual battery system. Most go with the dual batteries, but with the second...
Forum: Electrical Systems 05-23-2018, 05:21 PM
Replies: 28
Views: 3,806
Posted By Hartstoc
Considering the EarthX EXT900-VNT

I posted this as a reply within another thread but, considering how many owners are thinking about switching to lithium, thought it worthy of its own in general discussion. The EXT900-VNT is...
Forum: RV General Discussion/News 05-23-2018, 09:46 AM
Replies: 78
Views: 10,514
Posted By Hartstoc
Good to have the option!

I’ve become so impressed with the ever-improving ForeFlight App that I decided NOT to upgrade from the perfectly adequate and highly functional Dynon D100/ D120 combo already installed in my 7A....
Forum: RV-14 05-23-2018, 09:13 AM
Replies: 4
Views: 1,058
Posted By Hartstoc
Consider the EXT900-VNT

I just want to put in a word for the EarthX EXT900–VNT. A little more expensive and a bit heavier than the unvented version, but unique among the lifepo batteries available now in that it features a...
Forum: COMM 05-21-2018, 08:30 AM
Replies: 15
Views: 1,881
Posted By Hartstoc
Other noise reduction strategies to consider-

I think that the reality with ANR is that, at least for new, you get what you pay for. The bang-for-the-buck strategy I’d recommend is buying used, one generation back, top of the line headsets,...
Forum: Electrical Systems 05-18-2018, 06:02 PM
Replies: 46
Views: 9,002
Posted By Hartstoc
Vic- Yes, Iíd feel comfortable with your setup as...

Vic- Yes, Iíd feel comfortable with your setup as a backup(though I think the actual max output of that unit on the spline drive is well below 30Amps). My goal was a bit different- to delete the belt...
Forum: Electrical Systems 05-18-2018, 05:47 PM
Replies: 46
Views: 9,002
Posted By Hartstoc
Another delayed reply:

A partially depleted battery ďdemandsĒ a certain load at any given voltage . The regulator is ďdemandingĒ that the alternator maintain a certain voltage. The alternator tries really hard to satisfy...
Showing results 1 to 62 of 114

 
Forum Jump

All times are GMT -6. The time now is 11:47 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.