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Search: Posts Made By: Scott Hersha
Forum: Traditional Aircraft Engines 05-05-2021, 07:34 PM
Replies: 14
Views: 822
Posted By Scott Hersha
Are you climbing at Vy+10? If I do an extended...

Are you climbing at Vy+10? If I do an extended climb at Vy+10, I might get a little hot too. My Vy is 96K. I typically climb at 115 (minimum) to 135 KIAS. I have a fixed pitch prop on my O-360...
Forum: RV Ongoing Maintenance Issues 05-05-2021, 02:48 PM
Replies: 17
Views: 1,230
Posted By Scott Hersha
Flight hours should really have little to do with...

Flight hours should really have little to do with brake parts and tire wear. I keep track of landings, the sole reason being to track brake and tire wear.
If you fly a 4 hour flight and make one...
Forum: RV-4 05-05-2021, 05:30 AM
Replies: 22
Views: 1,933
Posted By Scott Hersha
Hereís mine: BEW 979.2; Empty CG...

Hereís mine:

BEW 979.2; Empty CG 69.45Ē

Maximum Gross Weight 1500 lbs.
Aerobatic Gross Weight 1375 lbs
Datum 60Ē forward of wing leading edge
Forward CG Limit 68.7Ē aft of datum (15%...
Forum: RV-9/9A 04-30-2021, 05:28 PM
Replies: 26
Views: 2,680
Posted By Scott Hersha
From Dan Hortons...

From Dan Hortons post:


https://www.airport-data.com/aircraft/photo/001423968.html

And what a beautiful airplane that is. I camped next to him and his wife at OSH-2018. He not only has larger main...
Forum: RV-9/9A 04-30-2021, 01:01 PM
Replies: 26
Views: 2,680
Posted By Scott Hersha
Drag reduction is the goal Iím guessing, and it...

Drag reduction is the goal Iím guessing, and it may be more than a milliknot. An old friend from college on this website sent me information years ago about drag reduction on the Radial Rocket (some...
Forum: RV-8/8A 04-27-2021, 10:37 PM
Replies: 10
Views: 836
Posted By Scott Hersha
I have installed 3 of Bruce’s bolt clips on...

I have installed 3 of Bruce’s bolt clips on RV8’s. It takes way less time to install these than trying to do what you are doing, and on your subsequent condition inspections, it takes just a couple...
Forum: RV General Discussion/News 04-27-2021, 05:43 AM
Replies: 29
Views: 1,755
Posted By Scott Hersha
My version of the ďbent paper clip/safety wireĒ...

My version of the ďbent paper clip/safety wireĒ idea is to use a tie wrap that fits snugly into the vent line opening. Just shove it up into the vent line all the way up to the fat end, which is too...
Forum: Electronic Ignition Systems 04-24-2021, 07:39 PM
Replies: 6
Views: 334
Posted By Scott Hersha
I have it on my RV4. Surefly on the left, Slick...

I have it on my RV4. Surefly on the left, Slick mag on the right. I have the UMA tach sensor on the Slick mag. It works no matter what ignition system is selected, because the right mag is still...
Forum: Traditional Aircraft Engines 04-22-2021, 05:46 AM
Replies: 4
Views: 392
Posted By Scott Hersha
I made covers out of plywood. Iíve used them many...

I made covers out of plywood. Iíve used them many times over the years.
Forum: RV General Discussion/News 04-18-2021, 08:33 PM
Replies: 26
Views: 3,442
Posted By Scott Hersha
Judging ended at 2pm on Friday. Awards ceremony...

Judging ended at 2pm on Friday. Awards ceremony is at the end of the show, so it may take a little time for results to be posted.
I was there too, and I agree. Not a ton of RVís showed up. I was in...
Forum: RV General Discussion/News 04-18-2021, 08:18 PM
Replies: 29
Views: 4,561
Posted By Scott Hersha
Pretty cool weekend at my airport - KHAO - Butler...

Pretty cool weekend at my airport - KHAO - Butler County Regional Airport, Hogan Field - in Ohio. We had the Commemorative Airforce C-47, along with a couple of airplanes from the Cincinnati Warbirds...
Forum: RV General Discussion/News 04-18-2021, 05:56 PM
Replies: 19
Views: 1,198
Posted By Scott Hersha
I do have a Lyc O-360-A1A on my RV4, and also had...

I do have a Lyc O-360-A1A on my RV4, and also had this on my RV6 years ago. If leaving my boost pump running until level off, and during step climbs makes everything happy, then Iím happy to do that.
Forum: RV General Discussion/News 04-18-2021, 07:51 AM
Replies: 19
Views: 1,198
Posted By Scott Hersha
This same issue has been reported on this forum...

This same issue has been reported on this forum many times over the last several years, and I think itís mostly, if not always, on a low pressure carbureted engine. I had these same issue on my RV6...
Forum: RV General Discussion/News 04-18-2021, 07:02 AM
Replies: 9
Views: 588
Posted By Scott Hersha
Yep, KHAO - there are at least 12 flying RVís...

Yep, KHAO - there are at least 12 flying RVís (including my RV4) and a couple under construction. Stop by sometime. Saturdayís are pretty active when the weather is nice. Iím there most days...
Forum: RV-12/RV-12iS 04-10-2021, 08:04 AM
Replies: 16
Views: 2,408
Posted By Scott Hersha
Yep. Iím hanging out at home in Cincinnati,...

Yep. Iím hanging out at home in Cincinnati, waiting for the weather to improve (VFR equipped). Today I canít get past Atlanta. Iíll leave tomorrow morning if I have ceiling and vis - lingering rain...
Forum: RV General Discussion/News 04-07-2021, 04:38 PM
Replies: 5
Views: 560
Posted By Scott Hersha
I had a few good experiences camping there years...

I had a few good experiences camping there years ago, but the last few years, Iíve stayed in a hotel. Youíll probably have a tough time finding hotel accommodations near Lakeland at this point. I...
Forum: RV Building Tips/Techniques 04-07-2021, 07:27 AM
Replies: 11
Views: 809
Posted By Scott Hersha
I did the same thing Gary did on all of mine. I...

I did the same thing Gary did on all of mine. I made a jig that fits into the hole for the switch with the tab hole in the appropriate place for drilling. I think the hole for the tab was something...
Forum: RV Ongoing Maintenance Issues 04-07-2021, 07:22 AM
Replies: 11
Views: 1,094
Posted By Scott Hersha
Four out of the five RVís Iíve owned have had...

Four out of the five RVís Iíve owned have had Cleveland wheels and brakes. The last one I built (RV8), had Matcoís. I was surprised at the installation difference between the two. With Clevelandís,...
Forum: RV-12/RV-12iS 04-04-2021, 04:46 PM
Replies: 8
Views: 983
Posted By Scott Hersha
Very nice story Jim. You must have a lot of good...

Very nice story Jim. You must have a lot of good memories with your Dad. I soloed in March of Ď72, (Kalamazoo, MI), so 49 for me. I didnít even think about it until I read your post.
Forum: Propellers 03-31-2021, 08:14 PM
Replies: 13
Views: 1,405
Posted By Scott Hersha
Cole, I have the Sensenich GA carbon prop on my...

Cole,
I have the Sensenich GA carbon prop on my O-360 powered RV4 and it has worked out very well for me. That prop replaced the 85Ē pitch metal Sensenich prop that would exceed 2900 RPM wide open...
Forum: RV General Discussion/News 03-29-2021, 06:13 AM
Replies: 59
Views: 3,622
Posted By Scott Hersha
Thanks for starting this Steve Smith......, I...

Thanks for starting this Steve Smith......, I mean Mr. Smith, Steve.
Forum: RV Ongoing Maintenance Issues 03-28-2021, 02:25 PM
Replies: 62
Views: 18,997
Posted By Scott Hersha
Krytox 205: $21.74 for the .5 oz tube on Amazon....

Krytox 205:

$21.74 for the .5 oz tube on Amazon. Best price I could find.
Forum: RV-4 03-28-2021, 01:38 PM
Replies: 10
Views: 768
Posted By Scott Hersha
Drilling a new replacement tail...

Drilling a new replacement tail spring:

http://flyboyblog.com/wp-content/uploads/2020/02/Drilling-the-tail-spring.pdf
Forum: RV-4 03-28-2021, 01:20 PM
Replies: 10
Views: 768
Posted By Scott Hersha
Bent spring...

Bent spring modification:

https://flyboyaccessories.files.wordpress.com/2014/08/bent-spring-modification.pdf
Forum: Electronic Ignition Systems 03-19-2021, 09:08 PM
Replies: 16
Views: 1,285
Posted By Scott Hersha
Primary reason for a kickback is a weak battery....

Primary reason for a kickback is a weak battery. You should be able to read 12+ volts at the starter terminal during initial engine start. The non-impulse right mag has no effect on your engine start...
Forum: RV-4 03-19-2021, 06:46 AM
Replies: 6
Views: 1,257
Posted By Scott Hersha
Now that right there folks is a proper back...

Now that right there folks is a proper back riveting plate.......

9491
Forum: RV-4 03-18-2021, 07:56 PM
Replies: 6
Views: 1,257
Posted By Scott Hersha
Wow Nick!! That is really sweet. Iím glad you...

Wow Nick!! That is really sweet. Iím glad you used .020 skins. If someone backs into my rudder, Iím going to give you a call. Hammerheads, even with a little tail slide, should be OK - - ...
Forum: RV-4 03-15-2021, 08:13 PM
Replies: 505
Views: 350,490
Posted By Scott Hersha
It doesnít look like the cylinder base fins are...

It doesnít look like the cylinder base fins are getting any cooling at all. If this is the case, why donít we just point cooling airflow at the cylinder head only? Reduce cooling inlet and exit...
Forum: RV General Discussion/News 03-15-2021, 07:33 PM
Replies: 10
Views: 783
Posted By Scott Hersha
Prop balancing works for most people Iíve worked...

Prop balancing works for most people Iíve worked with, but YMMV. Paul has some good advice about using drilled bolts to lighten the moment. We have used some titanium hardware (nuts and washers) to...
Forum: RV Building Tips/Techniques 03-15-2021, 07:17 PM
Replies: 8
Views: 1,139
Posted By Scott Hersha
Fluting is probably one of the easiest things you...

Fluting is probably one of the easiest things you can do. Maybe you think that it isn’t necessary. Loads ad up. You want those ribs to lie totally flat so the the holes in skins line up, without any...
Forum: RV-4 03-15-2021, 07:04 AM
Replies: 11
Views: 1,177
Posted By Scott Hersha
I am 6í2Ē and sit comfortably in both RV4ís Iíve...

I am 6í2Ē and sit comfortably in both RV4ís Iíve owned, including the current one. On both of these, I moved the front seatback aft 2.8Ē. I moved the seat bottom hinge aft only 1.8Ē, so my seatback...
Forum: RV-4 03-15-2021, 06:38 AM
Replies: 505
Views: 350,490
Posted By Scott Hersha
Iím curious about this too. Will you use standard...

Iím curious about this too. Will you use standard inter-cylinder baffle material, or something else to seal the gaps between cylinders? I assume that it will seal the fin areas better than aluminum...
Forum: RV-8/8A 03-13-2021, 05:30 AM
Replies: 9
Views: 956
Posted By Scott Hersha
Balancing the elevators separately, to lighten...

Balancing the elevators separately, to lighten the right one, just remove lead from the counterweight with a drill bit. The more lead you can remove the better, so on that one, drill out lead...
Forum: Traditional Aircraft Engines 03-12-2021, 06:47 AM
Replies: 5
Views: 1,096
Posted By Scott Hersha
Thereís another JB to consider if that doesnít...

Thereís another JB to consider if that doesnít work out - Jimmy Brod at JB Aircraft Engines in Sebring, FL. Ask for Jimmy, heíll fix you right up. If you are going to Sun N Fun, you can talk to him...
Forum: RV Friends Who Have Passed On 03-11-2021, 07:26 AM
Replies: 14
Views: 3,800
Posted By Scott Hersha
I think we should all try to remember Paul and...

I think we should all try to remember Paul and the positive affect he had on Don, and many others obviously, with a Gone West Toast, collectively, at 7pm on Friday (tomorrow). Iíll try to do this and...
Forum: RV General Discussion/News 03-10-2021, 09:21 AM
Replies: 11
Views: 1,745
Posted By Scott Hersha
I donít know if GRT will offer any show specials,...

I donít know if GRT will offer any show specials, but I do know that they wonít be attending Sun-N-Fun this year. I spoke with them yesterday when I paid for two servos that I ordered.
Forum: RV Ongoing Maintenance Issues 03-10-2021, 08:14 AM
Replies: 28
Views: 54,825
Posted By Scott Hersha
This is the one Iíve used on several RV aircraft,...

This is the one Iíve used on several RV aircraft, modified for the particular airplane at the time. Iím just completing my second CI on my RV4 and will make a couple minor changes to the checklist...
Forum: RV Ongoing Maintenance Issues 03-09-2021, 02:49 PM
Replies: 13
Views: 1,569
Posted By Scott Hersha
When you get the old bearing race out, use it as...

When you get the old bearing race out, use it as a guide to tap the new one into place. I got new Timken bearings and races at NAPA. Same as original.
Forum: RV-4 03-03-2021, 06:22 AM
Replies: 25
Views: 2,621
Posted By Scott Hersha
Iíve been using this app to set and program power...

Iíve been using this app to set and program power settings on my O-360-A1A powered RV4. The interactive app simulates the power charts from Lycoming, and can be set up for various types of Lycoming...
Forum: RV-4 03-01-2021, 01:19 PM
Replies: 27
Views: 9,486
Posted By Scott Hersha
My simple solution. I donít do run ups in this...

My simple solution. I donít do run ups in this configuration.

8933

8934

8935

8936
Forum: Electrical Systems 02-27-2021, 07:40 PM
Replies: 32
Views: 1,799
Posted By Scott Hersha
I would not ever say that a builder ďscrewed upĒ,...

I would not ever say that a builder ďscrewed upĒ, especially without looking at the installation, but the evidence indicates that you could have some grounding issues, which might be causing...
Forum: Electrical Systems 02-27-2021, 06:50 PM
Replies: 32
Views: 1,799
Posted By Scott Hersha
Only if you decide to install an additional...

Only if you decide to install an additional ground wire from your ground bus to the firewall/engine ground/battery ground point (preferred). If that ground bus is also grounded to the sub panel -...
Forum: RV Photo/Video URLs 02-27-2021, 06:29 PM
Replies: 4
Views: 900
Posted By Scott Hersha
Was it windy? I don’t see the wake turbulence...

Was it windy? I don’t see the wake turbulence encounter on the video. Looks like the air was a little bumpy, but where was the wake turbulence encounter? Whatever it was, it looks like you handled...
Forum: RV Building Tips/Techniques 02-27-2021, 06:13 PM
Replies: 18
Views: 3,378
Posted By Scott Hersha
Having a flush mounted back-riveting plate has...

Having a flush mounted back-riveting plate has been an invaluable tool over the years - for RV building, and other things. I’ve made three of these. One stayed with a hangar that I sold. On the two...
Forum: RV Building Tips/Techniques 02-27-2021, 04:31 PM
Replies: 9
Views: 692
Posted By Scott Hersha
Great idea Larry! I like it. Squirt some high...

Great idea Larry! I like it. Squirt some high temp goop in there and youíre done. I have the stuff that DanH recommended for firewall sealing on hand (2,000* +) and that should keep me safe.
Forum: RV-4 02-27-2021, 04:24 PM
Replies: 22
Views: 1,933
Posted By Scott Hersha
I donít know of any RV4ís that have an empty...

I donít know of any RV4ís that have an empty weight within that range. Iím not saying that they donít exist, because they do, but I donít know of any. If your airplane you are considering weighs...
Forum: RV-4 02-27-2021, 02:48 PM
Replies: 22
Views: 1,933
Posted By Scott Hersha
I have seen the picture of this one online, and I...

I have seen the picture of this one online, and I agree, she is a real beauty. Maybe you should ask yourself what your requirements are, and then do an actual weight and balance calculation with the...
Forum: RV-4 02-26-2021, 07:21 PM
Replies: 22
Views: 1,933
Posted By Scott Hersha
With my 980# empty weight, 125 pound wife, and...

With my 980# empty weight, 125 pound wife, and full fuel, I can only have 20# of luggage (in the back), and the airplane still flies nice, but is definitely tail heavy - but within limits, as long as...
Forum: Electrical Systems 02-26-2021, 06:16 PM
Replies: 32
Views: 1,799
Posted By Scott Hersha
Marc, To answer your second question, I don’t...

Marc,
To answer your second question, I don’t think your ground bus is adequately grounded. Typically, what many of us have used is similar to...
Forum: Autopilots 02-25-2021, 06:59 AM
Replies: 4
Views: 727
Posted By Scott Hersha
I can’t see any reason not to put the new Servo...

I can’t see any reason not to put the new Servo in the wingtip, since everything is already there. You will only be swapping servos, and possibly run another wire or two (or not). The RV6 aileron...
Forum: RV Ongoing Maintenance Issues 02-24-2021, 05:00 PM
Replies: 10
Views: 1,044
Posted By Scott Hersha
Got one. Pay for shipping and it’s yours. When...

Got one. Pay for shipping and it’s yours. When you install it, hog out the hole slightly, so it’s not under stress.
Forum: RV-4 02-24-2021, 12:53 PM
Replies: 11
Views: 2,152
Posted By Scott Hersha
A little formation action in my RV4 with Bruce...

A little formation action in my RV4 with Bruce Brielmaier, and Larry (Skater) Wolf:

8706

8707
Forum: Tools 02-24-2021, 12:37 PM
Replies: 23
Views: 2,063
Posted By Scott Hersha
I bought this one and Iíve been happy with it....

I bought this one and Iíve been happy with it. Two lenses - one looks straight ahead, the other looks side ways with a push of a button....
Forum: Autopilots 02-23-2021, 08:00 AM
Replies: 10
Views: 759
Posted By Scott Hersha
Thanks Len. I didnít know I could do that. One...

Thanks Len. I didnít know I could do that. One button for me. Iím headed over to Micro-Center to pick up NO push buttton switches. I have a bag of NC switches (not sure what I would do with them),...
Forum: Autopilots 02-22-2021, 07:55 PM
Replies: 10
Views: 759
Posted By Scott Hersha
GRT offers the ďbutton on the stickĒ extra option...

GRT offers the ďbutton on the stickĒ extra option too. I donít have an extra button on my stick. Think Iíll go with the single ďengage/disengageĒ switch on the panel. More simple....
Forum: Autopilots 02-22-2021, 06:20 PM
Replies: 10
Views: 759
Posted By Scott Hersha
GRT AUTOPILOT

I’m installing a new GRT autopilot (2-axis) on my RV4. I have a Horizon 10.1 and Mini-X, installed last year. The install manual suggests either one “ENGAGE/DISENGAGE” switch for both axis’, or two...
Forum: RV General Discussion/News 02-22-2021, 04:36 PM
Replies: 16
Views: 1,542
Posted By Scott Hersha
Scissors....... works every time.... Or.... ...

Scissors....... works every time....

Or.... have you tried WD40? It works on a lot of other stuff. Worth a try.
Forum: RV Building Tips/Techniques 02-22-2021, 04:27 PM
Replies: 30
Views: 2,243
Posted By Scott Hersha
Hereís a pic of my install. Braided line to an AN...

Hereís a pic of my install. Braided line to an AN fitting/aluminum line - to a T (blue on the firewall manifold), feeding the MAP sense probe, and also to the Pmags. The nylon T in the silicone line...
Forum: RV Building Tips/Techniques 02-22-2021, 04:19 PM
Replies: 30
Views: 2,243
Posted By Scott Hersha
Tomas, Like Tom, I had a fitting off cylinder 3...

Tomas,
Like Tom, I had a fitting off cylinder 3 with #3 braided line (TS Flightlines), going to a T fitting on the firewall, which supplied the MAP line, and the dual Pmags. My fitting on the #3...
Forum: RV General Discussion/News 02-20-2021, 05:52 AM
Replies: 62
Views: 5,554
Posted By Scott Hersha
Absotutely! Count me in.

Absotutely! Count me in.
Forum: Safety 02-18-2021, 02:16 PM
Replies: 54
Views: 6,335
Posted By Scott Hersha
I think both the calipers and wheel pant bolts...

I think both the calipers and wheel pant bolts are AN4 1/4-28, which would be 50-70 in/lbs. The washer doesnít change this. I bought a supply of Nord locks from spruce and have used them in these...
Forum: RV Building Tips/Techniques 02-15-2021, 09:31 PM
Replies: 6
Views: 526
Posted By Scott Hersha
Someone used to make a short cable to connect a...

Someone used to make a short cable to connect a rear deck mounted Ray Allen servo to the elevator trim tab horn. This helped keep weight off the elevator. If you install the trim motor in the...
Forum: RV Building Tips/Techniques 02-15-2021, 09:18 PM
Replies: 24
Views: 2,492
Posted By Scott Hersha
A SureFly ignition only requires a second old...

A SureFly ignition only requires a second old school mag on certified installations. That’s because it requires an onboard operable electrical system to supply power to it. Electroair is the same. No...
Forum: RV Building Tips/Techniques 02-14-2021, 05:56 PM
Replies: 24
Views: 2,492
Posted By Scott Hersha
I had one emag on my last RV, on the left and...

I had one emag on my last RV, on the left and used for engine start. Then I replaced the right mag with a second emag and used both for engine start. Both ways worked very well.
I now have a SureFly...
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