Home > VansAirForceForums

-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

Go Back   VAF Forums > Main > RV Building Tips/Techniques
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Thread Tools Search this Thread Display Modes
Old 11-19-2021, 05:58 PM
HFS HFS is offline
Join Date: Aug 2009
Location: Lemoore, CA
Posts: 409
Default Cowling "Puter Oner" For My Rocket

After 20 years of putting the lower cowling on my Rocket by myself, I have finally gotten to the age of not being sure I could do it any more without the possibility of doing some unrecoverable damage - hence the need for a "Puter Oner".

I've been thinking about it for a while, and thought I had a pretty good working "idea" to start from.

Below is what came out of the shop - the bare frame looks like a simulator for roping Texas longhorns!

The other two pics show the cowling positioned under the motor - in a horizontal position; and, then with the "scissor" lift advanced - the rear of the cowl sits on the top of the gearleg fairings, which act as a support at that point, making the rotation up & under the spinner much easier physically.

The scissoring aspect is advanced either by a manual crank handle, for precise placement, or by cordless drill for a faster advance. Either way works - their use just depends on the need for speed or precision.

There is a manual "foot" brake at the front of the frame to give a bit of stability after the initial placement under the motor - otherwise, with 4 casters it's like skating on ice. I elected not to use brakes on the casters because I didn't know if I'd be able to access them at the critical time of placement. Where the foot "pad" is now, I can just reach down to set it.

Attached Thumbnails
Click image for larger version

Name:	Cowling “Puter Oner” - 1.jpg
Views:	236
Size:	244.9 KB
ID:	18464  Click image for larger version

Name:	Cowling “Puter Oner” - 2.jpg
Views:	214
Size:	236.3 KB
ID:	18465  Click image for larger version

Name:	Cowling “Puter Oner” - 3.jpg
Views:	220
Size:	227.0 KB
ID:	18466  
Reply With Quote
Old 11-19-2021, 06:30 PM
DanH's Avatar
DanH DanH is offline
Join Date: Oct 2005
Location: 08A
Posts: 10,468

Very clever! My compliments sir.
Dan Horton
Barrett IO-390
Reply With Quote
Old 11-19-2021, 06:58 PM
wirejock's Avatar
wirejock wirejock is offline
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 4,862
Default Cowl carriage

That's a great idea!
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Reply With Quote
Old 11-19-2021, 07:11 PM
BillL BillL is offline
Join Date: Sep 2007
Location: Central IL
Posts: 6,381

Elegant mechanism! Well done.

I made a crude Rube Goldberg holder for (-7) my floor jack but it is not easily adjusted vertically. I need a better method.

Question, so, you pivot the cowl about the lower aft edge near the FW? And it will pass the aft side of the spinner?

I would love to do that to clear the protruding gear fairings. Honestly, never tried it cuz did not think it would fit.

Also, would an Acme 1/2 10 TPI work better for the jack?


Last edited by BillL : 11-19-2021 at 07:27 PM.
Reply With Quote
Old 11-19-2021, 07:21 PM
PaulvS's Avatar
PaulvS PaulvS is offline
Join Date: Aug 2019
Location: Western Australia
Posts: 835
Default Beauty

That looks really good, a clever design and fabricated very nicely. Now, what color are you going to paint her (too beautiful to be "it"!)?
Paul vS (yes I'm also a Van)
Building RV-6A #22320 O-320 FP. Wings and tail complete, working on fuselage
Flying my Aeroprakt A-22 STOL and the aero club's RV-9A while I build
Reply With Quote
Old 11-19-2021, 07:23 PM
Ironflight's Avatar
Ironflight Ironflight is offline
VAF Moderator / Line Boy
Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,886

Very, very cool - much nicer than my long-time method of supporting the cowling on a knee with that foot off the floor, while standing one-legged on the other foot!

Will have to consider this as the calendar advances……
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
Reply With Quote
Old 11-19-2021, 07:58 PM
Kyle Boatright Kyle Boatright is offline
Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,750

Very nice. I use a crude arrangement of a piece of foam rubber sitting on top of an oil case, which rests on a plastic toolbox. It works, but...yeah.
Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
Reply With Quote
Old 11-19-2021, 08:45 PM
Zero4Zulu Zero4Zulu is offline
Join Date: Nov 2008
Location: Scio,Oregon
Posts: 299

I made this contraption. I made clips that hook into the side piano hinges and used Dacron fishing line to wrap around the inside PVC pipe to real up the line and raise the cowel. Also incorporated thumb screws to lock down the PVC pipe so it would stay up after raising the cowel. It works pretty swell…

Darn picture is upside down… how do I fix that?
Click image for larger version

Name:	1F649FB2-6C00-4673-8EEC-BBA07CD171E5.jpg
Views:	193
Size:	384.7 KB
ID:	18477
Steve S.
Rebuilt RV6A Flying!
Scio, OR
EAA Ch. 292

Last edited by Zero4Zulu : 11-20-2021 at 08:27 PM.
Reply With Quote
Old 11-19-2021, 10:21 PM
Mikeyb Mikeyb is offline
Join Date: Nov 2018
Location: Pasadena ca
Posts: 72

Upside down or not I got the idea and am gonna try it. Thanks
Reply With Quote
Old 11-19-2021, 10:51 PM
JDA_BTR JDA_BTR is offline
Join Date: Dec 2013
Location: Colorado Springs, CO
Posts: 1,382

I'd like a pic of how you get that pipe on top then rig the cowling to it before it is lifted up?
Ser 140142, RV-14A flying - N1463
Ser 83825, RV-8 building - N8638?
USN Ret, Urologist, AME, Repeat Offender
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 01:51 AM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.