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Search: Posts Made By: John-G
Forum: RV-12/RV-12iS 05-06-2021, 07:45 AM
Replies: 5
Views: 429
Posted By John-G
My washer spacing did not change at all ... so...

My washer spacing did not change at all ... so that was good.

For inserting the washers, I have always had good luck placing blue painters tape on both edges of the washers and sticking them onto...
Forum: RV General Discussion/News 04-26-2021, 08:37 AM
Replies: 2
Views: 236
Posted By John-G
The easiest and probably far less expensive route...

The easiest and probably far less expensive route would be to use a simple Wi-Fi switch of your choice to control a solenoid that is both current and voltage rated to handle the demands of the...
Forum: Glass Cockpit 04-25-2021, 09:14 AM
Replies: 5
Views: 431
Posted By John-G
I did not want a large backup navigation display...

I did not want a large backup navigation display inside the RV-12, so I elected to use an 8" ASUS ZenPad Z8 with built in LTE. Readability inside the cockpit is very good. My main aviation apps are...
Forum: RV-12/RV-12iS 04-24-2021, 10:24 AM
Replies: 37
Views: 3,561
Posted By John-G
I agree ... and although I do have a panel...

I agree ... and although I do have a panel mounted fuel pump switch, I NEVER fly with it switched off. It is a line item in the pre-start checklist. I only turn it off while performing SkyView...
Forum: RV-12/RV-12iS 04-22-2021, 08:32 PM
Replies: 143
Views: 7,126
Posted By John-G
Much less likely to experience vapor lock because...

Much less likely to experience vapor lock because the fuel pressure is so much higher.
Forum: Autopilots 04-22-2021, 04:48 PM
Replies: 4
Views: 490
Posted By John-G
Stephen, as a follow up: Post #3 covers the trim...

Stephen, as a follow up: Post #3 covers the trim power and trim switch wiring to the AP Control Panel. If you continue to have a problem with the trim servo motor, verify the wiring from the AP...
Forum: Autopilots 04-22-2021, 08:30 AM
Replies: 4
Views: 490
Posted By John-G
Stephen, If you have not done so yet, you need...

Stephen,

If you have not done so yet, you need to go to the following Van’s download web page:
https://www.vansaircraft.com/downloads/#ElectricalSystemDiagrams

Then download the PDF electrical...
Forum: Glass Cockpit 04-18-2021, 12:22 PM
Replies: 2
Views: 244
Posted By John-G
My oldest note pad is running Android version 4.2...

My oldest note pad is running Android version 4.2 and not may newer apps will install ... Guessing you will need to upgrade to a newer notepad running a later version of Android as I needed to do.
Forum: RV-12/RV-12iS 04-18-2021, 09:28 AM
Replies: 6
Views: 859
Posted By John-G
Hans - feel the best way is to start from...

Hans - feel the best way is to start from scratch. Take the spinner to a good machine shop and have them drill the proper hole size into the tip of the spinner then install the bushing (suggest using...
Forum: RV-12/RV-12iS 04-18-2021, 07:49 AM
Replies: 6
Views: 859
Posted By John-G
Spray Chrome

There is an episode of the History Channel's show 'Counting Cars' where Ryan (the in house painter) showed Danny ( the owner of Counts Kustoms) a new spray process he was playing around with that...
Forum: RV-12/RV-12iS 03-27-2021, 05:18 PM
Replies: 22
Views: 2,758
Posted By John-G
Ken- I decided to paint all my interior parts...

Ken-

I decided to paint all my interior parts prior to riveting. I felt it would yield a better finished job than trying to spray nooks and crannies without creating any runs or dry spots .... plus...
Forum: RV-12/RV-12iS 03-27-2021, 11:42 AM
Replies: 24
Views: 2,383
Posted By John-G
Walter- I think you may be onto something by...

Walter-

I think you may be onto something by routing the carburetor air vent back to the air filter. Based on Rotax documentation, it appears that may be a good option to consider.

I've never...
Forum: RV-12/RV-12iS 03-27-2021, 10:57 AM
Replies: 7
Views: 615
Posted By John-G
Jim- It has be mentioned in other threads that...

Jim-

It has be mentioned in other threads that using silicone hose on the Rotax 912 balance tube may not be a good idea for that application. The thought is fuel vapors present in the balance tube...
Forum: RV-12/RV-12iS 03-23-2021, 03:23 PM
Replies: 12
Views: 1,324
Posted By John-G
I think that may be your current issue. You set...

I think that may be your current issue.

You set the trim speed when the electrical system probably had a higher voltage than what you have now, so the trim motor was set at that time to a minimum...
Forum: RV-12/RV-12iS 03-23-2021, 11:11 AM
Replies: 12
Views: 1,324
Posted By John-G
Keith- Aside from what Vern has already...

Keith-

Aside from what Vern has already mentioned, I'm wondering if you have the Dynon Autopilot Panel installed?

This may be a shot in the dark ... but if the Dynon AP panel is installed, there...
Forum: RV-12/RV-12iS 03-21-2021, 06:26 PM
Replies: 8
Views: 732
Posted By John-G
Stan- Good choice ... Glad to hear that. At...

Stan- Good choice ... Glad to hear that. At least you will have the piece of mind knowing you fixed the problem correctly.
Forum: RV-12/RV-12iS 03-21-2021, 09:17 AM
Replies: 8
Views: 732
Posted By John-G
Don't forget to ask friends who may have access...

Don't forget to ask friends who may have access to a machine shop or talk to local EAA members. Making a small guide like that is something that can be done in a machine shop in 15 minutes for a...
Forum: RV-12/RV-12iS 03-20-2021, 08:27 PM
Replies: 8
Views: 732
Posted By John-G
Stan- If it were me, my first choice would be to...

Stan-

If it were me, my first choice would be to start with new undrilled parts and set the flaperons for the proper 1/8" droop per the plans, then insert the .063 temporary spacer as shown in the...
Forum: RV-12/RV-12iS 03-16-2021, 08:35 PM
Replies: 11
Views: 975
Posted By John-G
Joe - Sometimes a photo is worth a thousand...

Joe -

Sometimes a photo is worth a thousand words. My older RV-12 has the ADSB-472 mounted above the radio using two brackets and a mounting plate (all Van's parts). Below are a couple of links to...
Forum: RV-12/RV-12iS 03-12-2021, 04:53 PM
Replies: 4
Views: 518
Posted By John-G
Disregard what I mentioned previously about...

Disregard what I mentioned previously about making a copy of the drawings I edited my previous post accordingly ... You don't match a drawing for the RV-12 because the RV-12 uses the curve in the...
Forum: RV-12/RV-12iS 03-12-2021, 04:05 PM
Replies: 4
Views: 518
Posted By John-G
Four tips that may be helpful for you. 1. The...

Four tips that may be helpful for you.

1. The F-1234 canopy deck is used as the template for the bend. Mark ALL the stations (forward edge of F-1234, beginning of curve, ect.) onto the longeron per...
Forum: RV-12/RV-12iS 03-10-2021, 07:19 AM
Replies: 28
Views: 5,436
Posted By John-G
I just checked and my email exchange with...

I just checked and my email exchange with Aircraft Specialty and it was in June of 2018 .... the original Rotax fuel return orifice specification as stated in the Rotax instillation manual is .014"....
Forum: RV-12/RV-12iS 03-08-2021, 03:36 PM
Replies: 4
Views: 724
Posted By John-G
Don - You will find that when printed in order to...

Don -
You will find that when printed in order to get meaningful readability the paper will be huge.

I took the drawing file to a blueprint shop and had the drawing printed onto a full sized...
Forum: RV-12/RV-12iS 03-08-2021, 08:25 AM
Replies: 28
Views: 5,436
Posted By John-G
Bob - the first link is to a photo showing how...

Bob - the first link is to a photo showing how small the hole is in the Aircraft Specialty original fuel restrictor. The pinpoint of light in the center is the hole size ... the later ones have a...
Forum: RV-12/RV-12iS 03-08-2021, 06:56 AM
Replies: 28
Views: 5,436
Posted By John-G
That explains it ..... I think I know why you are...

That explains it ..... I think I know why you are seeing the sudden change in fuel flow. You have a RV-12 that has been flying for a while now so I'm betting you had the original fuel flow restrictor...
Forum: RV-12/RV-12iS 03-07-2021, 08:46 PM
Replies: 28
Views: 5,436
Posted By John-G
Curious ... Did you also replace the fuel pump...

Curious ... Did you also replace the fuel pump as suggested by Rotax? If so, perhaps there is more pressure with the new pump which is causing more fuel to be returned to the fuel tank via the...
Forum: RV-12/RV-12iS 03-01-2021, 05:21 PM
Replies: 9
Views: 1,259
Posted By John-G
Joe - don't want to hijack this thread so PM me...

Joe - don't want to hijack this thread so PM me if you need more info than can be found in the following link to my...
Forum: RV-12/RV-12iS 03-01-2021, 07:22 AM
Replies: 9
Views: 1,259
Posted By John-G
Ken - I installed the second landing light just...

Ken -

I installed the second landing light just to have wig-wag capability to hopefully make it easier for other aircraft to see me, especially in the pattern ... which from a safety aspect, I feel...
Forum: RV-12/RV-12iS 02-27-2021, 12:17 PM
Replies: 4
Views: 884
Posted By John-G
For storing some of the mid sized parts I found...

For storing some of the mid sized parts I found using wire rack shelving was a good way to go .... and also easy to put wheels on so the rack is easy to move. I used a rack similar to...
Forum: RV-12/RV-12iS 02-26-2021, 07:33 AM
Replies: 14
Views: 2,070
Posted By John-G
Jerre, I suggest purchasing the avionics last...

Jerre,

I suggest purchasing the avionics last and try to time the purchase date with the expected lead time for the avionics so you won't find your project stalled.

New products/features are always...
Forum: RV-12/RV-12iS 02-23-2021, 06:20 AM
Replies: 54
Views: 11,517
Posted By John-G
Your right! The balance tube is subjected to fuel...

Your right! The balance tube is subjected to fuel vapors ... silicone hose would be a poor choice for that hose. Guess I was having a "senile delinquent" moment and caught up in an ordering...
Forum: RV-12/RV-12iS 02-22-2021, 10:49 AM
Replies: 54
Views: 11,517
Posted By John-G
Began ordering silicone coolant replacement hoses...

Began ordering silicone coolant replacement hoses yesterday to comply with the Rotax's 5 year rubber replacement. (Actually found green silicone coolant hoses that should compliment the green valve...
Forum: RV General Discussion/News 01-27-2021, 08:43 PM
Replies: 82
Views: 10,523
Posted By John-G
Just a thought ... Recently watched an episode of...

Just a thought ... Recently watched an episode of building off the grid where multiple 40 foot shipping containers were used to create a home. Using two 40 foot containers side by side with the...
Forum: RV-12/RV-12iS 01-18-2021, 07:23 AM
Replies: 5
Views: 1,129
Posted By John-G
I'm pretty sure my initial marking of the tail...

I'm pretty sure my initial marking of the tail cone fitting was done with the tail feathers off. Then at some point they were installed because I do remember doing the drilling for the nutplate screw...
Forum: RV-12/RV-12iS 01-04-2021, 12:40 PM
Replies: 12
Views: 1,892
Posted By John-G
Jim, you are correct ... the main issue is the...

Jim, you are correct ... the main issue is the different vapor point winter blend auto fuel has. If memory serves me, I believe the winter blend auto fuel has a lot of butane added which evaporates...
Forum: RV-12/RV-12iS 01-04-2021, 11:56 AM
Replies: 12
Views: 1,892
Posted By John-G
Felix- Don't know if the dates in my area...

Felix-

Don't know if the dates in my area correspond to yours, but here in northeast Ohio the winter fuel blend mandate begins September 15th and extends to June 1st. You may be able to check...
Forum: RV-12/RV-12iS 01-03-2021, 02:56 PM
Replies: 12
Views: 1,892
Posted By John-G
Felix- The above advice to check the weight of...

Felix-

The above advice to check the weight of the carb floats is the first item you should verify.

If the float weights are within Rotax specifications, you may be experiencing a heat related fuel...
Forum: RV-12/RV-12iS 01-02-2021, 08:25 PM
Replies: 5
Views: 1,132
Posted By John-G
Greg- As previously mentioned you need to have a...

Greg-

As previously mentioned you need to have a look at the RV-12 wiring diagram to help with the troubleshooting.

Unless your RV-12 is wired differently than mine, the Dynon Skyview has NOTHING...
Forum: RV-12/RV-12iS 12-31-2020, 09:34 AM
Replies: 98
Views: 17,612
Posted By John-G
Patrick- Don't have the time at the moment to...

Patrick- Don't have the time at the moment to locate the post you want, but it was posted that the tubing on the new engine mount is made from tubing that has a much thicker wall dimension than the...
Forum: RV-12/RV-12iS 12-23-2020, 06:28 PM
Replies: 7
Views: 1,312
Posted By John-G
Yep ... The lower right is the only pin that...

Yep ... The lower right is the only pin that tends to creep for me. Lately I have been placing the bent end of the pin under a rivet which seems to be working fine. I think Joe in Michigan made a...
Forum: RV-4 12-22-2020, 08:10 AM
Replies: 28
Views: 3,937
Posted By John-G
BamBam- One possible area that has not been...

BamBam-

One possible area that has not been mentioned yet is the cantilevered wing skin aft of the rear spar. Use a straight edge starting at a wing rib and make sure the skin aft of each wing's...
Forum: RV-12/RV-12iS 12-17-2020, 05:34 PM
Replies: 8
Views: 1,446
Posted By John-G
Jack- I have a RV-12 that began construction in...

Jack-

I have a RV-12 that began construction in 2012 ... at that time the large box of 10K rivets had a label stating the manufacturer was Gesipa and at that time the part number on the box for the...
Forum: RV-12/RV-12iS 12-17-2020, 07:54 AM
Replies: 42
Views: 5,020
Posted By John-G
Have a look at the Rotax Heavy Maintenance Manual...

Have a look at the Rotax Heavy Maintenance Manual section 74-00-00 ... page 19 shows the trigger coil assignments. (Not at the airport, but my reference is from revision 5, so the page reference may...
Forum: RV-12/RV-12iS 12-16-2020, 05:41 PM
Replies: 5
Views: 1,238
Posted By John-G
Dick- Aside from knowing the oil cooler would be...

Dick-

Aside from knowing the oil cooler would be hanging precariously, the bigger concern may be possible carb icing. Without the cowling in place the carbs won't receive any warm air from the...
Forum: RV-12/RV-12iS 12-12-2020, 10:41 AM
Replies: 10
Views: 1,423
Posted By John-G
I don't think the 1/8" clearance is referenced in...

I don't think the 1/8" clearance is referenced in the documentation. However, as you get close to the scribe lines you will see that the clearance ends up being around 1/8" or slightly more. Using...
Forum: RV-12/RV-12iS 12-12-2020, 07:52 AM
Replies: 4
Views: 925
Posted By John-G
Brad- The switches Van's uses in the RV-12 are...

Brad-

The switches Van's uses in the RV-12 are manufactured by Otto. Below is a link to the data sheet for the K2 series of switches. If you look on the side of the switch, you will see the part...
Forum: Electrical Systems 12-10-2020, 08:23 PM
Replies: 7
Views: 844
Posted By John-G
Dennis ... Give Mouser Electronics a try. Mouser...

Dennis ... Give Mouser Electronics a try. Mouser has a vast inventory of electrical connectors, pins, ect.
Forum: RV-12/RV-12iS 12-10-2020, 04:20 PM
Replies: 10
Views: 1,423
Posted By John-G
+3 .... Wait With the engine in place you can...

+3 .... Wait

With the engine in place you can get a much better fit. I used a couple of 1/8" thick aluminum plates between the spinner back plate and the cowling to get a nice even...
Forum: RV-12/RV-12iS 12-10-2020, 07:55 AM
Replies: 13
Views: 2,217
Posted By John-G
I think the first thing I would suggest is to...

I think the first thing I would suggest is to place a mechanical pressure gauge on the oil line so you can actually verify that the oil pressure sensor is really reading low.

If the pressure sensor...
Forum: RV General Discussion/News 12-10-2020, 07:38 AM
Replies: 9
Views: 1,232
Posted By John-G
Until it doesn't .... In the past, I've always...

Until it doesn't .... In the past, I've always sent cash wrapped in a printed thank you for VAF note and placed that in a security envelope. This year I don't think Doug got it because this was back...
Forum: RV-12/RV-12iS 12-10-2020, 07:24 AM
Replies: 6
Views: 1,336
Posted By John-G
Yes- Van's offers a winterizing kit for the...

Yes-

Van's offers a winterizing kit for the RV-12 consisting of a partial cover for the coolant radiator and three different sized cover plates for the oil cooler. Sorry I can't help with the part...
Forum: RV-12/RV-12iS 12-09-2020, 08:02 AM
Replies: 13
Views: 1,441
Posted By John-G
When installing the thermostat for the oil tank,...

When installing the thermostat for the oil tank, I had completely overlooked scuffing up the oil tank at the location where the thermostat is epoxied ... and it came off.

After giving the area a...
Forum: RV-12/RV-12iS 12-08-2020, 06:55 PM
Replies: 8
Views: 1,434
Posted By John-G
Incorrect ... Per Rotax specifications the...

Incorrect ... Per Rotax specifications the throttle shaft nut is torqued to 44 in lbs. This specification can be found in the older versions of the illustrated parts manual ... Which is Handy to keep...
Forum: RV-12/RV-12iS 12-06-2020, 06:39 PM
Replies: 37
Views: 5,161
Posted By John-G
Lon- Most of the ADAHRS wiring goes through...

Lon-

Most of the ADAHRS wiring goes through grommets as you pointed out .... however, as a builder I can tell you the first two locations I would look for chaffed ADAHRS wires are in the tail...
Forum: RV-12/RV-12iS 12-06-2020, 08:15 AM
Replies: 4
Views: 1,246
Posted By John-G
Reilly- Can't help you out with Word versions of...

Reilly-

Can't help you out with Word versions of the documents you are interested in.

However, you should be able to customize the documents to fit your needs easily. Since not every page needs to...
Forum: RV-12/RV-12iS 12-05-2020, 05:33 PM
Replies: 253
Views: 64,633
Posted By John-G
Niner- I'll concede Rotax likely does not...

Niner- I'll concede Rotax likely does not directly manufacture the floats ... but I believe reading somewhere, quite a while ago, they were involved with changing the manufacturer of the floats and...
Forum: RV-12/RV-12iS 12-05-2020, 10:36 AM
Replies: 253
Views: 64,633
Posted By John-G
Frankly, I’m fed up with the Bovine Sludge from...

Frankly, I’m fed up with the Bovine Sludge from Rotax regarding their carburetor floats. It really rubs me the wrong way that us Rotax owners are continually paying full price for the latest “new and...
Forum: RV-6/6A 11-23-2020, 07:25 AM
Replies: 38
Views: 6,061
Posted By John-G
Ed, Just an observation ... if the fuel level...

Ed,

Just an observation ... if the fuel level sender and/or ring it is mounted onto is found to be leaking, it wouldn't surprise me. Judging from your photos, it appears the mounting screws were...
Forum: RV-12/RV-12iS 11-15-2020, 08:36 AM
Replies: 25
Views: 5,962
Posted By John-G
There have been a few iterations of "old...

There have been a few iterations of "old springs". The original Rotax springs are a pull of around 8-12 lbf/in ... way too much and constantly pulled the throttle forward.

When Van's switched over...
Forum: Tools 10-29-2020, 08:07 AM
Replies: 15
Views: 3,671
Posted By John-G
+1 ... My go to torque wrench for AN3 hardware.

+1 ... My go to torque wrench for AN3 hardware.
Forum: RV-12/RV-12iS 10-27-2020, 02:15 PM
Replies: 86
Views: 19,789
Posted By John-G
Yes, ... it has been a long time but I think they...

Yes, ... it has been a long time but I think they came with either the finishing kit or the Avionics kit.

I also just received another standard red tool with the SB parts for the trim servo...
Forum: Electrical Systems 10-27-2020, 02:09 PM
Replies: 1
Views: 645
Posted By John-G
If that grip uses the same wiring as the CS-8 for...

If that grip uses the same wiring as the CS-8 for the trigger and index buttons ... you should see:

Trigger button is a Yellow wire.

Index button is Grey wire.

Common for both switches is a White...
Forum: RV-12/RV-12iS 10-27-2020, 11:32 AM
Replies: 86
Views: 19,789
Posted By John-G
Niner- If you are asking about the round male...

Niner-

If you are asking about the round male and female pins that insert into a DB connector (D shaped) ... no you don't need a special tool to insert the pins into the connector body (but there is...
Forum: RV-12/RV-12iS 10-26-2020, 07:22 AM
Replies: 8
Views: 2,564
Posted By John-G
Jay- Using a vacuum to suck the pull string from...

Jay-

Using a vacuum to suck the pull string from the top down works great. I would suggest using a more durable pull string .... I used a waxed cord that is commonly used for making jewelry, very...
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