dr
vansairforce.net
![Screenshot 2024-09-02 at 8.22.38 AM.png Screenshot 2024-09-02 at 8.22.38 AM.png](https://vansairforce.net/data/attachments/48/48198-11f99de4d9ea8ef9b95d67746f6270b4.jpg)
Spotlight ON …the VAF Job Board
….dr
The subforum description: “For RVators looking for a job and for RVators looking to hire other RVators. Let’s help each other out if we can.”
Are you looking to hire an RV builder/owner for your company (because you’ll already have sort of an idea of their ability to focus on long term projects)? Consider posting that job opening in the VAF Job Board subforum. Currently unemployed (but have an RV project in the garage)? Post you’re looking for work here. It’s the one area where, by design, I give some leeway in regards to the ‘RV only’ rule.
Some examples of perfectly appropriate subject lines:
RV-8 Builder (wings) CPA in TX looking for work.
RV-7 Owner looking to hire IT specialist
Unemployed RV-6 Owner looking for part time retirement work.
RV-10 Builder looking to hire engineer (preferably RV builder/owner)
RVators helping RVators stay employed is what I’m going for.
Thanks if you can help a fellow RVator out.
v/r,dr
PS: A huge shout out to you folks and businesses who financially help to keep this pirate ship going - I continue to hope the RV world benefits from it.
www.vansairforce.net
Quirky Things Seen From the Air
…BruceW entry.
![Screenshot 2024-09-02 at 8.25.57 AM.png Screenshot 2024-09-02 at 8.25.57 AM.png](https://vansairforce.net/data/attachments/48/48197-c75b72d291803bc1b4826b2e83b7d7c1.jpg)
Tire Valve Mod
…HFS
I made a 6" (arbitrary length) extension with a straight coupling on one end, and 1/8 - 27 NPT threads on the other. The straight coupling lets you get into access holes that are 3/4" or less.
Pics below - I still have 3 left for sale - extension only for $10.00 (my cost) + shipping. All different options for attachment - the most useful (the one I use), couples EZ-FLATE directly to a pistol grip type inflator with a hose "whip". Like one stop shopping - just plug it in and go ...
HFS
FWIW - The use of a laser to "mark" the wheel pant access hole works, as long as the axis of the laser matches the axis of the stem. If they don't, then all you are marking on the WP with the laser is that "point" in space where the center of the valve stem face is - that is in the X,Y & Z directions. As you bring that point forward (Z- axis) until it's on the outer face of the WP, without accounting for the lateral movement in the X-axis, the access hole & stem face will not be in alignment. Larry's way works ... Just sayin'
vansairforce.net
![Screenshot 2024-09-02 at 8.27.09 AM.png Screenshot 2024-09-02 at 8.27.09 AM.png](https://vansairforce.net/data/attachments/48/48196-a17dda310d7ea03d0a5a55c08a23ffff.jpg)
Scott Hersha
Bent Stick Mod PIREP
I did the cut and weld offset on both of my RV8’s, and it worked well (see first pic). The offset was 2” aft from centerline of the upper grip area to centerline of the lower part.
I did a slightly more elegant mod to my RV4 front stick. The RV4 stick and the RV8 stick are the same. I cut the stick where I wanted it and inserted the RV14 stick inside (it’s smaller diameter). It didn’t fit tightly, so I machined down a piece of 4130 tube to use as a shim to make it fit tight. Drilled for two bolts through the assembly (Second two pics). I had moved my front seat aft almost three inches for comfort, and it all turned out great.
vansairforce.net
![Screenshot 2024-09-02 at 10.01.16 AM.png Screenshot 2024-09-02 at 10.01.16 AM.png](https://vansairforce.net/data/attachments/48/48195-2d8ef9248b27e141757f57fd7e2c0062.jpg)
Help with Odd Vibration Needed
…BillL reply
Mark, I read through your OP and all the comments. I am not a vibrations expert, but 2300 rpm test is 115 hz firing frequency. It is splitting the 100-125 box of the report, peaking at 100hz. Adding in the hints of your GAMI test and trim of the injectors and the dropping of the EGT on landing all seems to point to a mixture issue. IMO the GAMI spread of .3 GPM seems high, my stock IO360 M1B is .1 and a friends IO540 tested as .1 also. This is not a smoking gun, but might want to understand this in more detail. You did not say this was from day 1 but sometimes we take time to refine our senses to the airplane. You might want to inspect the injectors for spray plume and delivery at a standard pulse width. Installed debris from various sources is a fundamental cause of production issues in fuel system.
Fuel is just one item on the list of variables that can cause a combustion "intensity" variance. Valve events can do that too - i.e. pushrod length. Ignition could do that if the system could allow it to occur only on some cylinders - like triggers etc.
Just some thoughts, Bill
vansairforce.net
jimzap
vansairforce.net
![Screenshot 2024-09-02 at 8.28.23 AM.png Screenshot 2024-09-02 at 8.28.23 AM.png](https://vansairforce.net/data/attachments/48/48194-35ed4fdd61e0789a392c519bf8c52594.jpg)
Question..Hydraulic fluid started dripping from bottom right side of fuselage by the right landing gear area
…Bob Y reply
I found the KAI for the ULS landing gear. The fitting is different, but in close proximity to the iS.
vansairforce.net
![Screenshot 2024-09-02 at 8.29.13 AM.png Screenshot 2024-09-02 at 8.29.13 AM.png](https://vansairforce.net/data/attachments/48/48193-c84a504a010ea2f8c1de902636af38d3.jpg)
Bypass Oil Filtration - Any Hard Data Available?
…Toolbuilder PIREP
Finally hit my 50 hour oil change interval on the return from Sedona today so in conjunction with the oil change I’ve installed the bypass filter. Took a sample of the old oil and will have it burned. at next oil change will have the “bypass treated“ oil burned to compare.
vansairforce.net
![Screenshot 2024-09-02 at 10.03.00 AM.png Screenshot 2024-09-02 at 10.03.00 AM.png](https://vansairforce.net/data/attachments/48/48192-608a29e9d195b639d4a645aebc728137.jpg)
OFF TOPIC:
![IMG_5233.JPG IMG_5233.JPG](https://vansairforce.net/data/attachments/48/48191-c2f726c2ecb223e10047f4031be2a55d.jpg)
Previous Issue:
vansairforce.net
Please consider donating yearly to help keep this American 1-person pirate ship afloat:
Older issues of the ‘VAF News’ can be found at:
www.vansairforce.net
THE VAF LIST (a list of RV-related lists)
vansairforce.net
WDYDWYRTW? (8/31 - 9/12024)
...getting this week's 'What did you do with your RV this weekend?' thread started. v/r,dr
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
![Screenshot 2024-09-02 at 8.22.38 AM.png Screenshot 2024-09-02 at 8.22.38 AM.png](https://vansairforce.net/data/attachments/48/48198-11f99de4d9ea8ef9b95d67746f6270b4.jpg)
Spotlight ON …the VAF Job Board
….dr
The subforum description: “For RVators looking for a job and for RVators looking to hire other RVators. Let’s help each other out if we can.”
Are you looking to hire an RV builder/owner for your company (because you’ll already have sort of an idea of their ability to focus on long term projects)? Consider posting that job opening in the VAF Job Board subforum. Currently unemployed (but have an RV project in the garage)? Post you’re looking for work here. It’s the one area where, by design, I give some leeway in regards to the ‘RV only’ rule.
Some examples of perfectly appropriate subject lines:
RV-8 Builder (wings) CPA in TX looking for work.
RV-7 Owner looking to hire IT specialist
Unemployed RV-6 Owner looking for part time retirement work.
RV-10 Builder looking to hire engineer (preferably RV builder/owner)
RVators helping RVators stay employed is what I’m going for.
Thanks if you can help a fellow RVator out.
v/r,dr
PS: A huge shout out to you folks and businesses who financially help to keep this pirate ship going - I continue to hope the RV world benefits from it.
Job Board
For RVators looking for a job and for RVators looking to hire other RVators. Lets help each other out if we can. Some examples of perfectly appropriate subject lines: - RV-8 Builder (wings) looking for work. - RV-7 Owner looking to hire IT specialist - Unemployed RV-6 Owner looking for part...
![www.vansairforce.net](/proxy.php?image=https%3A%2F%2Fwww.vansairforce.net%2Fdata%2Fassets%2Flogo%2Fvaf-icon-192x192.png&hash=253ac26c64e15348dec9ea91bd1c9a3e&return_error=1)
Quirky Things Seen From the Air
…BruceW entry.
![Screenshot 2024-09-02 at 8.25.57 AM.png Screenshot 2024-09-02 at 8.25.57 AM.png](https://vansairforce.net/data/attachments/48/48197-c75b72d291803bc1b4826b2e83b7d7c1.jpg)
Tire Valve Mod
…HFS
I made a 6" (arbitrary length) extension with a straight coupling on one end, and 1/8 - 27 NPT threads on the other. The straight coupling lets you get into access holes that are 3/4" or less.
Pics below - I still have 3 left for sale - extension only for $10.00 (my cost) + shipping. All different options for attachment - the most useful (the one I use), couples EZ-FLATE directly to a pistol grip type inflator with a hose "whip". Like one stop shopping - just plug it in and go ...
HFS
FWIW - The use of a laser to "mark" the wheel pant access hole works, as long as the axis of the laser matches the axis of the stem. If they don't, then all you are marking on the WP with the laser is that "point" in space where the center of the valve stem face is - that is in the X,Y & Z directions. As you bring that point forward (Z- axis) until it's on the outer face of the WP, without accounting for the lateral movement in the X-axis, the access hole & stem face will not be in alignment. Larry's way works ... Just sayin'
Tire valve extension
Anyone used this for airing up tires without removing tbe wheel pants? Just wondering if they work on mains and nose wheel. Obviously need a hole in the right spot. https://www.aircraftspruce.com/catalog/lgpages/ae06-03064.php Aircraft Extras Flexible Tire Valve Extension
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
![Screenshot 2024-09-02 at 8.27.09 AM.png Screenshot 2024-09-02 at 8.27.09 AM.png](https://vansairforce.net/data/attachments/48/48196-a17dda310d7ea03d0a5a55c08a23ffff.jpg)
Scott Hersha
Bent Stick Mod PIREP
I did the cut and weld offset on both of my RV8’s, and it worked well (see first pic). The offset was 2” aft from centerline of the upper grip area to centerline of the lower part.
I did a slightly more elegant mod to my RV4 front stick. The RV4 stick and the RV8 stick are the same. I cut the stick where I wanted it and inserted the RV14 stick inside (it’s smaller diameter). It didn’t fit tightly, so I machined down a piece of 4130 tube to use as a shim to make it fit tight. Drilled for two bolts through the assembly (Second two pics). I had moved my front seat aft almost three inches for comfort, and it all turned out great.
bent or offset taller stick - panel interference
I'm trying to improve the ergonomics of the 8 stick, and have searched several threads. It seems like there are many versions of a very modest offset, achieved through either bends or welding. My perception is that this is insufficient for the improvements I'm looking for. I was able to find...
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
![Screenshot 2024-09-02 at 10.01.16 AM.png Screenshot 2024-09-02 at 10.01.16 AM.png](https://vansairforce.net/data/attachments/48/48195-2d8ef9248b27e141757f57fd7e2c0062.jpg)
Help with Odd Vibration Needed
…BillL reply
Mark, I read through your OP and all the comments. I am not a vibrations expert, but 2300 rpm test is 115 hz firing frequency. It is splitting the 100-125 box of the report, peaking at 100hz. Adding in the hints of your GAMI test and trim of the injectors and the dropping of the EGT on landing all seems to point to a mixture issue. IMO the GAMI spread of .3 GPM seems high, my stock IO360 M1B is .1 and a friends IO540 tested as .1 also. This is not a smoking gun, but might want to understand this in more detail. You did not say this was from day 1 but sometimes we take time to refine our senses to the airplane. You might want to inspect the injectors for spray plume and delivery at a standard pulse width. Installed debris from various sources is a fundamental cause of production issues in fuel system.
Fuel is just one item on the list of variables that can cause a combustion "intensity" variance. Valve events can do that too - i.e. pushrod length. Ignition could do that if the system could allow it to occur only on some cylinders - like triggers etc.
Just some thoughts, Bill
Help with Odd Vibration Needed
Hi Everyone, On my 3 yr old RV-10 I've been struggling to find the cause of a really weird vibration that comes on with higher power settings. It makes the control stick vibrate and I can feel it in the bottom of the seat and on the floor. After balancing the prop, changing engine mounts, and...
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
jimzap
F-7106 Fwd Top Skin - riveting aft three rivets to side skin/longeron
How did you get a bucking bar on back of these rivets? Due to the canopy deck, there is a thin gap to get the bucking bar in there. Modify a bucking bar? Thx
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
![Screenshot 2024-09-02 at 8.28.23 AM.png Screenshot 2024-09-02 at 8.28.23 AM.png](https://vansairforce.net/data/attachments/48/48194-35ed4fdd61e0789a392c519bf8c52594.jpg)
Question..Hydraulic fluid started dripping from bottom right side of fuselage by the right landing gear area
…Bob Y reply
I found the KAI for the ULS landing gear. The fitting is different, but in close proximity to the iS.
Question..Hydraulic fluid started dripping from bottom right side of fuselage by the right landing gear area
Has anybody had this happen to them? Or heard of it happening? I was thinking it might be the fitting located in that area? What is the best way to access that area…myself and a mechanic are heading to the airport tomorrow to have a look….any insight or suggestions would be greatly appreciated!
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
![Screenshot 2024-09-02 at 8.29.13 AM.png Screenshot 2024-09-02 at 8.29.13 AM.png](https://vansairforce.net/data/attachments/48/48193-c84a504a010ea2f8c1de902636af38d3.jpg)
Bypass Oil Filtration - Any Hard Data Available?
…Toolbuilder PIREP
Finally hit my 50 hour oil change interval on the return from Sedona today so in conjunction with the oil change I’ve installed the bypass filter. Took a sample of the old oil and will have it burned. at next oil change will have the “bypass treated“ oil burned to compare.
Bypass Oil Filtration - Any Hard Data Available?
Seems it wouldn't take too much to build something. A suction hose on the oil drain, going to a pump, then through a filter, discharging into the oil filler spout. Anyone done this ? What pump did you use ? And filter ? I can see pushing a cart over to the plane, hooking up, and let it run while...
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
![Screenshot 2024-09-02 at 10.03.00 AM.png Screenshot 2024-09-02 at 10.03.00 AM.png](https://vansairforce.net/data/attachments/48/48192-608a29e9d195b639d4a645aebc728137.jpg)
OFF TOPIC:
![IMG_5233.JPG IMG_5233.JPG](https://vansairforce.net/data/attachments/48/48191-c2f726c2ecb223e10047f4031be2a55d.jpg)
Previous Issue:
The VAF News - 9.2.2024. #6160. WDYDWYRTW, low-voltage, intake seals, seat ventilation, worktable, roll servo.
Hope you had a nice RV Sat/Sun and that your RV Mon is going well. Reminder: Mothership closed today (Labor Day). v/r,dr dr https://vansairforce.net/threads/wdydwyrtw-8-31-9-12024.229381/ Why I love this site!!!! …..bjdecker type replies below….
“Install the breather IACW the plans -- see...
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)
Please consider donating yearly to help keep this American 1-person pirate ship afloat:
Older issues of the ‘VAF News’ can be found at:
Doug's Area ....The VAF News & my flying resume.
Pushed out every now and then.
![www.vansairforce.net](/proxy.php?image=https%3A%2F%2Fwww.vansairforce.net%2Fdata%2Fassets%2Flogo%2Fvaf-icon-192x192.png&hash=253ac26c64e15348dec9ea91bd1c9a3e&return_error=1)
THE VAF LIST (a list of RV-related lists)
THE VAF LIST (a list of RV-related lists)
The VAF List ...a list of RV-related lists. RV-related things you might want to browse over (a closed post that is sticky and maintained by dr). Link to this in 'Links' in the menu. v/r,dr Small biz that brings you this page: 360 Avionics www.360Avionics.com Aircraft Extras...
![vansairforce.net](https://vansairforce.net/data/assets/logo/vaf-icon-192x192.png)