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Search: Posts Made By: Scott Hersha
Forum: RV-12/RV-12iS Today, 08:04 AM
Replies: 3
Views: 222
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: 426
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: 564
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: 845
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: 669
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: 1,122
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: VAF Classifieds (posts in here deleted after 30 days) 03-29-2021, 03:15 PM
Replies: 6
Views: 676
Posted By Scott Hersha
This is what I have, if any of it works for you....

This is what I have, if any of it works for you.

9812

Like I said earlier, you can get these at NAPA, several lengths. Make sure they are 5/16-18.
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 03-29-2021, 03:01 PM
Replies: 2
Views: 499
Posted By Scott Hersha
That is an amazing picture - and itís an RV4 -...

That is an amazing picture - and itís an RV4 - even better. Who took the pic?
Forum: RV General Discussion/News 03-29-2021, 06:13 AM
Replies: 59
Views: 3,101
Posted By Scott Hersha
Thanks for starting this Steve Smith......, I...

Thanks for starting this Steve Smith......, I mean Mr. Smith, Steve.
Forum: VAF Classifieds (posts in here deleted after 30 days) 03-28-2021, 07:48 PM
Replies: 6
Views: 676
Posted By Scott Hersha
I can check tomorrow when I go to my hangar. How...

I can check tomorrow when I go to my hangar. How long do they need to be? I’ve bought some these in the past at NAPA. They have various lengths.
Forum: RV Ongoing Maintenance Issues 03-28-2021, 02:25 PM
Replies: 62
Views: 18,547
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: 514
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: 514
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: 1,076
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: VAF Classifieds (posts in here deleted after 30 days) 03-19-2021, 10:46 AM
Replies: 10
Views: 550
Posted By Scott Hersha
Me three. PM sent.

Me three. PM sent.
Forum: RV-4 03-19-2021, 06:46 AM
Replies: 6
Views: 1,048
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: 1,048
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: VAF Classifieds (posts in here deleted after 30 days) 03-18-2021, 08:16 AM
Replies: 10
Views: 550
Posted By Scott Hersha
OK, Iíll be third in line. PM sent.

OK, Iíll be third in line. PM sent.
Forum: RV-4 03-15-2021, 08:13 PM
Replies: 505
Views: 346,888
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: 689
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: 1,008
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: 940
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: 346,888
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: 694
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: 1,000
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: 3,559
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: 1,563
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: VAF Classifieds (posts in here deleted after 30 days) 03-10-2021, 08:25 AM
Replies: 3
Views: 478
Posted By Scott Hersha
LRI

PM sent for LRI
Forum: RV Ongoing Maintenance Issues 03-10-2021, 08:14 AM
Replies: 25
Views: 53,825
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: 1,449
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: 2,291
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: 9,120
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: 1,632
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: 1,632
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: 847
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: 3,274
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: 613
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: 15
Views: 1,140
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: 15
Views: 1,140
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: 15
Views: 1,140
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: 1,632
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: 649
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: 935
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: 1,906
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: 1,824
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: 655
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: 655
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: 655
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: 1,420
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: 22
Views: 1,480
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: 22
Views: 1,480
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: 5,036
Posted By Scott Hersha
Absotutely! Count me in.

Absotutely! Count me in.
Forum: Safety 02-18-2021, 02:16 PM
Replies: 54
Views: 5,776
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: 460
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: 2,313
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: 2,313
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...
Forum: RV Building Tips/Techniques 02-14-2021, 02:47 PM
Replies: 24
Views: 2,313
Posted By Scott Hersha
What William says is true. But if you were forced...

What William says is true. But if you were forced to do that because of a problem with your impulse mag, would you really want to do that? The only way I would consider doing that would be to start...
Forum: RV Building Tips/Techniques 02-14-2021, 02:25 PM
Replies: 11
Views: 783
Posted By Scott Hersha
I’ve used 3/32” blind flush rivets to hold...

I’ve used 3/32” blind flush rivets to hold platenuts in tight locations. The machine countersink on these small blind rivets is shallower than a standard flush 3/32 AN rivet, and even if you leave it...
Forum: RV Building Tips/Techniques 02-14-2021, 01:52 PM
Replies: 24
Views: 2,313
Posted By Scott Hersha
I replaced my impulse mag (left side) with a...

I replaced my impulse mag (left side) with a SureFly SIM, as recommended by SureFly because of impulse coupling issues and ADís. I start the engine on the SureFly. This setup is the same price as the...
Forum: Traditional Aircraft Engines 02-14-2021, 01:20 PM
Replies: 12
Views: 1,142
Posted By Scott Hersha
Which one is hotter (heat gun or oil temp...

Which one is hotter (heat gun or oil temp sender)? Have you tested the gun against a known other temp source? Is the cooler attached to the cylinder baffle? Is the hot oil from the engine going in...
Forum: RV-4 02-12-2021, 05:48 AM
Replies: 6
Views: 589
Posted By Scott Hersha
Unfortunately, when it gets cold, that plexiglas...

Unfortunately, when it gets cold, that plexiglas shrinks a little and makes that small gap at the back even worse. But fortunately I have found something that works for me. Itís called air...
Forum: RV-9/9A 02-11-2021, 07:48 AM
Replies: 10
Views: 1,496
Posted By Scott Hersha
A few tips from Lycoming about engine break...

A few tips from Lycoming about engine break in:

https://www.lycoming.com/content/hard-facts-about-engine-break
Forum: Propellers 02-10-2021, 07:06 PM
Replies: 30
Views: 2,910
Posted By Scott Hersha
I suggest you mic that #4 pin with the ďhard...

I suggest you mic that #4 pin with the ďhard tapeĒ, send that dimension to Sensenich, and have them make you a pin at that diameter. Tape doesnít sound like a permanent solution.
Forum: Glass Cockpit 02-10-2021, 07:01 PM
Replies: 26
Views: 2,621
Posted By Scott Hersha
Plane is level, but is the GSU25 level and...

Plane is level, but is the GSU25 level and configured?
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