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Search: Posts Made By: gasman
Forum: Propellers Yesterday, 02:34 PM
Replies: 6
Views: 409
Posted By gasman
Prop tip speed

Quote....

Default Best Prop Tip Speed?
Having friends with RV's (mostly 8's), the discussion comes up about propeller design, and the efficiency in certain rpm settings.

A former prop engineer for...
Forum: RV General Discussion/News 01-20-2020, 09:54 PM
Replies: 80
Views: 11,372
Posted By gasman
Or just purchase this.......

Or just purchase this.... https://usaoilfilters.com/product/s15/ and save $21.00 and it includes the cup wrench.
Forum: VAF Classifieds (posts in here deleted after 30 days) 01-19-2020, 12:35 PM
Replies: 13
Views: 1,111
Posted By gasman
GRANGER also carries them........

GRANGER also carries them..... https://www.grainger.com/search?searchQuery=viton%20o-rings&suggestConfigId=6&searchBar=true
Forum: RV General Discussion/News 01-15-2020, 12:07 PM
Replies: 4
Views: 875
Posted By gasman
Most questions like this can be answered in the...

Most questions like this can be answered in the builders manual that came with your airplane or is available from Van's. They would not be able to give you an answer over the phone without you giving...
Forum: Traditional Aircraft Engines 01-11-2020, 08:16 PM
Replies: 2
Views: 280
Posted By gasman
Hi David, I did this to a O360 that was not...

Hi David,

I did this to a O360 that was not going to be installed for an extended (still not installed) period of time. I removed the intake tubes and capped off the intake and exhaust ports with...
Forum: Glass Cockpit 01-11-2020, 02:53 PM
Replies: 30
Poll: EFIS Poll
Views: 2,059
Posted By gasman
Here is one .......

Here is one .... http://www.vansairforce.com/community/showpost.php?p=1398168&postcount=1
Forum: Fuel Injection Systems 01-06-2020, 08:29 PM
Replies: 57
Views: 3,414
Posted By gasman
Why wouldn't you use a battery like this as a...

Why wouldn't you use a battery like this as a back up battery.......

Mighty Max Battery ML18-12 - 12V 18AH CB19-12 SLA AGM Rechargeable Deep Cycle.
Forum: RV General Discussion/News 01-02-2020, 08:43 PM
Replies: 17
Views: 1,843
Posted By gasman
I fly just like this most of the time. I keep the...

I fly just like this most of the time. I keep the oil temp high by adjusting my butterfly oil cooler outlet.
And I always lean to the max. burn is 5.5 gal. per hour at 150 mph.
Forum: Close Calls / Lessons Learned 12-31-2019, 10:42 PM
Replies: 44
Views: 4,824
Posted By gasman
Check the extinguisher that you used. ABC, the...

Check the extinguisher that you used. ABC, the most common powder type are very corrosive to aluminum and electrical connections.
Forum: Close Calls / Lessons Learned 12-27-2019, 12:42 PM
Replies: 44
Views: 4,824
Posted By gasman
"Now, back to the phone for a reminder of the...

"Now, back to the phone for a reminder of the Cleveland brake lining conditioning sequence... Oh yes, taxi 1500 feet with engine at 1700 rpm and brake(s) applied. *Stop. *Let cool 3 minutes, then...
Forum: Fuel Injection Systems 12-25-2019, 02:06 PM
Replies: 57
Views: 3,414
Posted By gasman
With the PC680 considered in the test, maybe the...

With the PC680 considered in the test, maybe the test should be duration per pound.

But then it gets very expensive........:eek:
Forum: RV-7/7A 12-23-2019, 11:08 AM
Replies: 9
Views: 950
Posted By gasman
Unless you are going for max leg room, the pedal...

Unless you are going for max leg room, the pedal does not need to be tilted that far forward. The weldment can be rotated toward the pilot during cable installation to allow the top of the brake...
Forum: RV General Discussion/News 12-19-2019, 02:08 PM
Replies: 20
Views: 2,339
Posted By gasman
Dog in the back seat.........

Dog in the back seat...... https://www.youtube.com/watch?v=6NvBGb5lf78
Forum: RV General Discussion/News 12-18-2019, 10:05 PM
Replies: 61
Views: 5,858
Posted By gasman
RV6A with metal FP prop..... Slips very nice but...

RV6A with metal FP prop..... Slips very nice but does not have the drag of the Warrior. Keep the nose down during a slip, if you let it lift and increase the AOA, the top wing will stall and pull you...
Forum: RV-8/8A 12-16-2019, 12:00 PM
Replies: 7
Views: 822
Posted By gasman
This entire connection should be coated with...

This entire connection should be coated with DE-OX before installation. This IS the outpath of the current.
Forum: RV General Discussion/News 12-08-2019, 11:17 PM
Replies: 43
Views: 3,189
Posted By gasman
Yes, that's your option. Just keep this in...

Yes, that's your option. Just keep this in mind.... several people at the Petaluma airport were GIVEN new motors by Chevron after they purchased contaminated fuel and were found through the use of...
Forum: RV General Discussion/News 12-08-2019, 08:55 PM
Replies: 43
Views: 3,189
Posted By gasman
Why not drop the letter and use simple numbers...

Why not drop the letter and use simple numbers that can be easily said and understood.
Also, numbers are much easier to enter at the gas pump.
Forum: RV-14 11-21-2019, 08:53 PM
Replies: 7
Views: 664
Posted By gasman
You can take the next size smaller bushing and...

You can take the next size smaller bushing and splice it with a razor blade, slip it over the cable and snap it into the existing bushing. This will give more wear surface for the cable, and if it...
Forum: RV General Discussion/News 11-16-2019, 10:23 PM
Replies: 13
Views: 2,695
Posted By gasman
Van used the same math on the three, that was...

Van used the same math on the three, that was used to create the great pyramid.......:)
https://www.ancient.eu/Great_Pyramid_of_Giza/

It was the base feel for the next 11 models. And what all other...
Forum: RV Building Tips/Techniques 11-16-2019, 04:01 PM
Replies: 1
Views: 384
Posted By gasman
You might want to check around for a airfoil...

You might want to check around for a airfoil profile jig for an RV4 or 6 and the instructions from the build manual.
Forum: RV Ongoing Maintenance Issues 11-14-2019, 04:25 PM
Replies: 10
Views: 851
Posted By gasman
In the 40 years of owning and operating...

In the 40 years of owning and operating lycomings, all I have ever used to lube the filter is the oil from the quarts going in, and 3/4 turn past contact and have NEVER HAD a problem with a filter...
Forum: RV Ongoing Maintenance Issues 11-10-2019, 01:23 PM
Replies: 7
Views: 1,076
Posted By gasman
Place the handle back on the shaft and replace...

Place the handle back on the shaft and replace the screw hand tight.

Now grab the handle and pull up the shaft along with the cone.

There is an o ring on the shaft as it passes through the nut. And...
Forum: Traditional Aircraft Engines 11-09-2019, 10:21 PM
Replies: 30
Views: 2,769
Posted By gasman
During a differential pressure test, the valve is...

During a differential pressure test, the valve is seated slowly as the motor is turned by hand. The valve will almost always seat. Running at 2300 rpm the valve has many opportunities to hit off...
Forum: RV-6/6A 11-04-2019, 09:40 PM
Replies: 10
Views: 1,757
Posted By gasman
As the brushes wear, they may catch in their...

As the brushes wear, they may catch in their holder and not feed out to make contact. If that is the case, you could tap the housing with a screwdriver handle and see if it will release the stuck...
Forum: Electrical Systems 11-02-2019, 09:52 PM
Replies: 145
Views: 15,668
Posted By gasman
Best understood as revolutions over it's life.

Best understood as revolutions over it's life.
Forum: RV-9/9A 10-26-2019, 05:50 PM
Replies: 7
Views: 830
Posted By gasman
Did Mark sell his 6A and build a 7A??

Did Mark sell his 6A and build a 7A??
Forum: RV General Discussion/News 10-26-2019, 12:56 PM
Replies: 4
Views: 608
Posted By gasman
Piper sets the location of the prop. Example......

Piper sets the location of the prop. Example... 160 hp warriors 12/6. 150 hp warriors 10/4.
Forum: RV General Discussion/News 10-26-2019, 12:13 AM
Replies: 65
Views: 11,389
Posted By gasman
It is if that's all you have connected to the +...

It is if that's all you have connected to the + terminal.......
Forum: RV General Discussion/News 10-23-2019, 12:15 AM
Replies: 14
Views: 1,609
Posted By gasman
[/QUOTE] Wondering how one might find tower...

[/QUOTE]

Wondering how one might find tower telephone numbers for unfamiliar airfields while airborne. I had no idea this was possible. I can't even find the number for our local airport.

Cheers,...
Forum: RV Building Tips/Techniques 10-21-2019, 01:03 AM
Replies: 4
Views: 841
Posted By gasman
A probe set at 45 deg from the pitot is used as a...

A probe set at 45 deg from the pitot is used as a base for a differential pressure AOA gauge. That should be a good start for you.
Forum: RV Ongoing Maintenance Issues 10-18-2019, 01:36 PM
Replies: 14
Views: 1,492
Posted By gasman
Is this really a compression test? A proper...

Is this really a compression test?

A proper compression test would be accomplished with an automotive type compression gauge screwed into the spark plug hole and measures the compressed volume of...
Forum: RV-9/9A 10-09-2019, 11:56 AM
Replies: 2
Views: 830
Posted By gasman
You should be excited..... That interior looks...

You should be excited..... That interior looks amazing and should by cool in the summer.

Could you please report back if you have reflection issues.
Forum: RV General Discussion/News 10-09-2019, 12:33 AM
Replies: 15
Views: 2,615
Posted By gasman
a watery mixture of baking soda and a cotton swab...

a watery mixture of baking soda and a cotton swab can clean up most battery leaking issues and save the device if it has not been ignored for a long time.
Forum: RV General Discussion/News 10-04-2019, 08:10 PM
Replies: 21
Views: 1,388
Posted By gasman
These.........

These...... https://www.harborfreight.com/6-in-digital-caliper-with-sae-and-metric-fractional-readings-62569.html?_br_psugg_q=digital+caliper will get you through your entire build for under...
Forum: Traditional Aircraft Engines 10-04-2019, 01:31 AM
Replies: 4
Views: 701
Posted By gasman
You should have a good view (camera or mirror) by...

You should have a good view (camera or mirror) by removing #2 cyl.
Forum: RV-12/RV-12iS 10-02-2019, 12:39 PM
Replies: 22
Views: 5,642
Posted By gasman
Here you go.........

Here you go...... http://www.vansairforce.com/community/showpost.php?p=1377409&postcount=9
Forum: RV General Discussion/News 10-02-2019, 12:15 PM
Replies: 8
Views: 1,104
Posted By gasman
If they spin that well, then what's keeping them...

If they spin that well, then what's keeping them from spinning during the entire flight?

If the tire gets out of balance then there might be a continuous vibration.
Forum: RV-12/RV-12iS 09-28-2019, 11:21 PM
Replies: 22
Views: 5,642
Posted By gasman
If you need anything more than your finger to...

If you need anything more than your finger to flip up the tab on your fuel cap, then your cap nut is adjusted too tight and you will end up breaking the hinge pin.

Properly adjust and lube the O...
Forum: RV General Discussion/News 09-26-2019, 10:11 PM
Replies: 3
Views: 447
Posted By gasman
Look up the part numbers.... if they are the...

Look up the part numbers.... if they are the same, then you can use them. Van is no dummy.
Forum: Traditional Aircraft Engines 09-20-2019, 09:20 PM
Replies: 9
Views: 1,682
Posted By gasman
Good to go then................

Good to go then................
Forum: RV-6/6A 09-17-2019, 09:06 PM
Replies: 5
Views: 917
Posted By gasman
Maybe you should consider all of the other...

Maybe you should consider all of the other issues.

And, If in doubt, Call Van's. They can tell you how to inspect the gear mount.
Forum: RV-6/6A 09-17-2019, 11:35 AM
Replies: 5
Views: 917
Posted By gasman
The entire mount is exposed ( if not covered with...

The entire mount is exposed ( if not covered with carpet) so inspecting it for any damage or movement should be easy. Look at each extension where it contacts the fuselage for signs of displacement....
Forum: RV Ongoing Maintenance Issues 09-13-2019, 08:42 PM
Replies: 4
Views: 908
Posted By gasman
Carefully pull the seal to avoid damaging the...

Carefully pull the seal to avoid damaging the number on the seal. Take it to your local bearing shop and they can find a replacement for you.
Forum: RV General Discussion/News 09-10-2019, 08:58 PM
Replies: 16
Views: 2,756
Posted By gasman
Yes, but MAP will tell you if you are getting the...

Yes, but MAP will tell you if you are getting the power loaded to the prop. An under pitched prop will give you 2700 rpm without using all of the available power.
Forum: RV General Discussion/News 09-10-2019, 12:31 PM
Replies: 16
Views: 2,756
Posted By gasman
"If fixed pitch you can't control MAP (unless you...

"If fixed pitch you can't control MAP (unless you fly higher or lower altitudes). So RPM and density altitude will give you ball park percent power. "

You CAN control manifold pressure up to full...
Forum: RV General Discussion/News 09-09-2019, 11:09 PM
Replies: 1
Views: 424
Posted By gasman
No..... but you can remove the shaft and cone...

No..... but you can remove the shaft and cone without removing the valve from the plumbing.

But first try lifting the pointer handle and turning it.

Do a search for "fixing Van's fuel valve"
Forum: RV General Discussion/News 09-08-2019, 10:31 AM
Replies: 13
Views: 1,657
Posted By gasman
It's not only the cost of the tires and wheels,...

It's not only the cost of the tires and wheels, but also needed is new discs, calipers and maybe new masters.... $$$
Forum: Electrical Systems 09-04-2019, 12:19 PM
Replies: 13
Views: 1,920
Posted By gasman
OHM'S LAW only applies sometimes??......

OHM'S LAW only applies sometimes??......
Forum: RV-12/RV-12iS 08-29-2019, 12:13 PM
Replies: 75
Views: 10,555
Posted By gasman
I have had my 740 since it was introduced. Made a...

I have had my 740 since it was introduced. Made a simple channel clip mounted to the panel. The 740 slips up under it to secure the top of the unit to the panel. The bottom just pushes to the panel...
Forum: RV-12/RV-12iS 08-26-2019, 11:05 PM
Replies: 75
Views: 10,555
Posted By gasman
Check their web site. I think it is $25 each...

Check their web site. I think it is $25 each extra up to four devices.
Forum: RV-9/9A 08-26-2019, 09:18 PM
Replies: 33
Views: 5,236
Posted By gasman
What I see here is a nose heavy aircraft. This...

What I see here is a nose heavy aircraft. This trim position has nothing to do with landing slow.

"With conventional gear, you can just wheel it on by flying it lowered and lower until the wheels...
Forum: RV Ongoing Maintenance Issues 08-25-2019, 10:55 PM
Replies: 47
Views: 68,565
Posted By gasman
Way too much play.... The proper amount is NONE....

Way too much play.... The proper amount is NONE. If the plane has 80 hours on it, the bolt is not properly installed. It may be too short. The shank must pass through the entire outer tube and be...
Forum: RV Ongoing Maintenance Issues 08-25-2019, 02:13 PM
Replies: 13
Views: 2,328
Posted By gasman
What was the brand name and part number.....

What was the brand name and part number.....
Forum: RV General Discussion/News 08-23-2019, 10:43 PM
Replies: 25
Views: 2,168
Posted By gasman
Does it really do that? Or is the oil sump...

Does it really do that? Or is the oil sump bolted under the crankcase and mostly separated by casting.
Forum: RV-10 08-19-2019, 09:46 PM
Replies: 10
Views: 2,314
Posted By gasman
Avery had a tool like this.... punch a hole in...

Avery had a tool like this.... punch a hole in the top install band with drain, turn the filter 180 degrees and let it drain.
Forum: RV General Discussion/News 08-19-2019, 09:36 PM
Replies: 10
Views: 953
Posted By gasman
Aluminum angle from your local hardware store. Or...

Aluminum angle from your local hardware store. Or from AC Spruce https://www.aircraftspruce.com/catalog/mepages/alumangle3.php

The nice rounded bend at the bottom makes it more difficult to install...
Forum: RV General Discussion/News 08-19-2019, 09:13 PM
Replies: 3
Views: 408
Posted By gasman
Just another item in you way during maintenance.

Just another item in you way during maintenance.
Forum: RV General Discussion/News 08-19-2019, 09:05 PM
Replies: 24
Views: 2,449
Posted By gasman
Two PC680's one alternator. Alternate the battery...

Two PC680's one alternator. Alternate the battery use for each flight. Simple A B switch.
Forum: RV General Discussion/News 08-16-2019, 10:46 AM
Replies: 0
Views: 323
Posted By gasman
Rebuilding the 912 ULS

Looks like the RV12 has been out long enough to have mid time motors show up in the fleet.

My question is.... What is a 1000 hour 912 ULS worth, and how much does it cost to rebuild?
Forum: RV Ongoing Maintenance Issues 08-15-2019, 12:46 PM
Replies: 1
Views: 454
Posted By gasman
#1 The vacuum system is a continuous leak. Just...

#1 The vacuum system is a continuous leak. Just make sure your vacuum gauge reads within required volume.

#2 I like to use quality electric marking tape. 3M Scotch #35 Electrical Tape Value Pack...
Forum: RV-14 08-12-2019, 11:12 AM
Replies: 24
Views: 2,359
Posted By gasman
Learn to use your hand tools..... They will save...

Learn to use your hand tools..... They will save you a lot of time and money. By the time you set up a jig, the parts can be done.

When using a band saw, lower the blade guide down close to the part...
Forum: RV Ongoing Maintenance Issues 08-12-2019, 12:38 AM
Replies: 24
Views: 3,807
Posted By gasman
Vlad, That disc on the right looks just like me...

Vlad, That disc on the right looks just like me old discs. I upgraded to thicker discs 300 hours ago. Inspecting the brakes today, the discs looked like the one on the left in your picture, with no...
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