Today's Message Index:
----------------------
1. 05:00 AM - Re: a way to avoid routing spars (Doug Dever)
2. 05:24 AM - Piet parts to Brodhead (skipgadd@earthlink.net)
3. 06:44 AM - Re: a way to avoid routing spars (Jack Phillips)
4. 07:07 AM - Re: a way to avoid routing spars (Ken Bickers)
5. 07:57 AM - Re: a way to avoid routing spars (tools)
6. 08:32 AM - Article on Brodhead in current Atlantic Flyer (woodflier@aol.com)
7. 08:51 AM - Re: Piet parts to Brodhead (899PM)
8. 09:14 AM - filling up the spar web sections---with 1/4" thick mahogany or birch ply (Cuy, Michael D. (GRC-RXD0)[Vantage Partners, LLC])
9. 09:35 AM - Re: filling up the spar web sections---with 1/4" thick mahogany or birch ply (Jim Markle)
10. 09:36 AM - Re: Re: Piet parts to Brodhead (Jim Markle)
11. 11:14 AM - Re: Re: Piet parts to Brodhead (skipgadd@earthlink.net)
12. 11:20 AM - Re: Re: Piet parts to Brodhead (skipgadd@earthlink.net)
13. 12:40 PM - Re: Article on Brodhead in current Atlantic Flyer (aerocarjake)
14. 03:17 PM - Re: Looking for a steel tube piet (jarheadpilot82)
15. 05:08 PM - Re: Re: Looking for a steel tube piet (C N Campbell)
16. 05:33 PM - Re: a way to avoid routing spars (jarheadpilot82)
17. 06:42 PM - Re: a way to avoid routing spars (tools)
18. 06:52 PM - Re: a way to avoid routing spars (tools)
19. 06:58 PM - Stromberg NA-S3A1 (Gary Boothe)
20. 07:10 PM - Re: Stromberg NA-S3A1 (tools)
21. 07:18 PM - Re: Re: Stromberg NA-S3A1 (Gary Boothe)
22. 09:19 PM - Re: Re: Looking for a steel tube piet (Greg Bacon)
23. 10:26 PM - what I would do differently, wing spars and other things (Oscar Zuniga)
24. 10:38 PM - Re: Stromberg NA-S3A1 (Gerry Holland)
25. 11:20 PM - Re: a way to avoid routing spars (Clif Dawson)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: a way to avoid routing spars |
Mike,- Any idea how much weight savings over the solid 3/4 spars?=0A-
=0A-=0ADoug Dever=0Ain beautiful Stow Ohio=0A-=0A=0A=0A________________
________________=0AFrom: "Cuy, Michael D. (GRC-RXD0)[Vantage Partners, LLC]
" <michael.d.cuy@nasa.gov>=0ATo: "pietenpol-list@matronics.com" <pietenpol-
list@matronics.com> =0ASent: Tuesday, September 4, 2012 2:16 PM=0ASubject:
Pietenpol-List: a way to avoid routing spars=0A=0ACurt--Many ways to make y
our spars including routing but I chose to go a different 'route' if you'll
excuse=0Athe pun. =0A=0AHere's what I did to fabricate my wing spars and t
he sketch also shows how I would do it over again next time. =0A=0AMike C.
=0A=0AGood to meet you and your daughter at Brodhead!!!!!!
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Piet parts to Brodhead |
Anybody going to the MAAC fly-in this weekend?
Dave Stephens sold his Piet to someone in the Brodhead area and it has been taken
apart, we took off the wings yesterday. Dave and I will deliver the Piet parts
to Brodhead Airport this weekend. Mike Weeden is to help the new owner build
an aircraft with the parts. I think they are going to send the Corvair back
to WW for the 5th bearing.
Skip
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | a way to avoid routing spars |
Calculate it. Sitka Spruce has a density of 21.86 lbs/ft3.
Jack Phillips
NX899JP
Smith Mountain Lake, Virginia
_____
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Doug Dever
Sent: Wednesday, September 05, 2012 8:00 AM
Subject: Re: Pietenpol-List: a way to avoid routing spars
Mike, Any idea how much weight savings over the solid 3/4 spars?
Doug Dever
in beautiful Stow Ohio
From: "Cuy, Michael D. (GRC-RXD0)[Vantage Partners, LLC]"
<michael.d.cuy@nasa.gov>
Sent: Tuesday, September 4, 2012 2:16 PM
Subject: Pietenpol-List: a way to avoid routing spars
Curt--Many ways to make your spars including routing but I chose to go a
different 'route' if you'll excuse
the pun.
Here's what I did to fabricate my wing spars and the sketch also shows how I
would do it over again next time.
Mike C.
Good to meet you and your daughter at Brodhead!!!!!!
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: a way to avoid routing spars |
... ahh the archives. Here is what I posted back on 2/19/2011 under
the subject line "Routed Spar Weight"
>From time to time, the question of what spars to use arises. I
thought it might be useful to share a bit of data on
the amount of weight saved by using routed spars.
For Christmas, my family ordered spar blanks from Aircraft Spruce for
me -- proving yet again how lucky I am. After
several weeks of anticipation, four beautiful Sitka Spruce planks
arrived. Each was 1" x 5", 14' long.
I deviated from the plans in two respects. One, I decided to take
advantage of the extra length and opted to add 9" to
each wing. So my outer wing panels, with the attached wing tip bows,
will be 14' 0.5" long. This will produce
a wing that is 30' 6" from wing tip to wing tip. Two, I also opted
not to reduce the spar blanks to a 4.75" by 1" rectangle,
but to bevel the top edge of each to match the interior space of the
ribs. As a result, my front two spars are 4.75" tall
on the forward face and 5" tall on the rear face. The rear two spars
are 4.875" tall on the forward face and 4.75" on the
aft face. The routed sections, however, ignore the extra material at
the top of each spar. That is, were I to shave off the
extra area, I would still have the flanges that are specified in the
plans. Please keep these deviations in mind, because
they will affect the specific weight savings that others might obtain.
After much trepidation and construction of a set of simple jigs, I was
ready to take my router to the spar blanks. To avoid
sharp transitions, I used a bull nose router bit (i.e., shaped like a
capital U) to make chamfered half circles at each
end of the routed sections, as well as to chamfer the full straight
edge that forms the upper and lower flanges. I then
used a straight router bit to eat out the wood in the interior of the
chamfered race track-like sections. I followed the plans
in leaving the section where the strut fittings attach unrouted (18"),
the 4.5" triangle-ish outboard section, and the 7" inboard
section. I also left a section of about 5.5" unrouted where the jury
strut fittings will attach.
With that explanation, here are the data:
Pre-routed Starboard Front Spar . . . 12 lbs 9.6 oz Routed
Staboard Front Spar . . . 9 lbs 10.0 oz
Pre-routed Port Front Spar . . . 12 lbs 13.8 oz Routed
Port Front Spar . . . 9 lbs 13.6 oz
Pre-routed Starboard Rear Spar . . . 12 lbs 5.4 oz. Routed
Starboard Rear Spar . . . 9 lbs 6.6 oz.
Pre-routed Port Rear Spar . . . 12 lbs 6.4 oz Routed
Port Rear Spar . . . 9 lbs 7.4 oz
For each spar, the routing saves almost exactly 3 lbs. The reduction
is from approx 50 lbs of total spar weight to
approx 38 lbs of total spar weight.
As for the time involved, it took me about 2 hours per spar to do the
routing, plus another 15 minutes or so for
each one to vacuum up the mess. There was another 2 or 3 hours of
sanding inivolved. I probably spent about
the same total time, pondering, worrying, and jig building before I
ever touched the router to the spar blanks.
Cheers, Ken
On Wed, Sep 5, 2012 at 7:43 AM, Jack Phillips <pietflyr@bellsouth.net> wrote:
> Calculate it. Sitka Spruce has a density of 21.86 lbs/ft3.
>
>
> Jack Phillips
>
> NX899JP
>
> Smith Mountain Lake, Virginia
>
>
> ________________________________
>
> From: owner-pietenpol-list-server@matronics.com
> [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Doug Dever
> Sent: Wednesday, September 05, 2012 8:00 AM
> To: pietenpol-list@matronics.com
> Subject: Re: Pietenpol-List: a way to avoid routing spars
>
>
> Mike, Any idea how much weight savings over the solid 3/4 spars?
>
>
> Doug Dever
>
> in beautiful Stow Ohio
>
>
> From: "Cuy, Michael D. (GRC-RXD0)[Vantage Partners, LLC]"
> <michael.d.cuy@nasa.gov>
> To: "pietenpol-list@matronics.com" <pietenpol-list@matronics.com>
> Sent: Tuesday, September 4, 2012 2:16 PM
> Subject: Pietenpol-List: a way to avoid routing spars
>
>
> Curt--Many ways to make your spars including routing but I chose to go a
> different 'route' if you'll excuse
> the pun.
>
> Here's what I did to fabricate my wing spars and the sketch also shows how I
> would do it over again next time.
>
> Mike C.
>
> Good to meet you and your daughter at Brodhead!!!!!!
>
>
> http://www.matronics.com/Navigator?Pietenpol-List
>
> http://forums.matronics.com
>
> http://www.matronics.com/contribution
>
>
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: a way to avoid routing spars |
Here's some considerations around spar construction that don't seem to have been
addressed very much.
First, wt savings 1" routed vs 3/4" solid. Calculating it out, going to be about
a toss up. I suspect the 1" routed (I beam) is stronger than a 3/4" solid...
by enough to be worthwhile.. no clue. Given how many champ wings are out there
with 3/4 solid, I'd say probably not enough to matter.
Here's some lesser known issues around wood purchasing. Frequently there is a
premium on buying wood that isn't a "standard" size. What that means is that
4/4 (one inch thick before surfacing) is the most common thickness available.
You should be able to yield a 3/4" solid spar out of that stock if you're buying
rough (as in from McCormicks or somewhere). That's probably going to be the
most economical all around and for not super well equipped wood shops.
Many places sell 1/2" at the same price or MORE than 3/4, as they simply plane
4/4 stock down to half of what it was. Takes longer, more passes through the
planer, so it cost more.
If you can find some 5/4 (1 1/4" before surfacing), you can plane to 1" finished
and rout, or more economical yet, resaw to 5/8 then plane to 1/2" (if you're
careful and good at resawing).
>From somewhere like aircraft spruce, 5/4 is probably prohibitive. From a lumber
supplier, probably very little if any premium for 5/4 over 4/4, you'll just
have less to select from and it'll be about 25 percent more expensive, because
you're getting 25 percent more lumber. The price per board foot, is usually
the same. A board foot is 144 cubic inches, 12x12x1.
Mike's built up spars will definitely make the most out of the lumber you have,
but you'll need a good cabinet shop full of tools to get the most out of it.
If you have that, great! If not, factor in shop services.
Quick question for Mike, what are you doing to build up the sections where fittings
hook up? Using plywood, or spruce?
The bottom line is that you're paying for spruce (or nice doug fir) by the cubic
inch. The less of them you turn into sawdust, router or planer shavings, the
cheaper. As we know from the weight savings posts (about a very consistent
12 lbs per spar set), you're turning about 25 percent of your spruce into dust.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382445#382445
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Article on Brodhead in current Atlantic Flyer |
The Atlantic Flyer has a nice article on the July Brodhead Pietenpol Flyin.
Dan Helsper's Yellow German and Dan Luke/Rob Bach's airplane got mentioned
and there were some pics that brought back memories.
Here's a link to the article online:
http://www.aflyer.com/1209_c_antiqueattic.html
Matt Paxton
NX629ML
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Piet parts to Brodhead |
Skip,
I will be there all weekend. Do you need help with anything?
Mike Cushway
--------
PAPA MIKE
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382448#382448
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | filling up the spar web sections---with 1/4" thick mahogany |
or birch ply
Tools,
I built up the areas where I had to attach wing fittings with 1/4" mahogany
plywood on each side of
the web area. I chamfered the ends of those filler plates on the advice o
f an aeronautical engineer.
I attached an example in the form of a sketch which should help to illustra
te how I did this.
Mike C.
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: filling up the spar web sections---with 1/4" thick |
mahogany or birch ply
I like that design. Worked out really well (so far) for me. Also wonder if it
might be good to add some curve to those filler pieces, as shown on in the attached?
Maybe eliminate a stress riser at point A on the dwg? Where the filler
ply meets the cap filler strip at 90 degrees? Personally, I don't think it's
worth the effort but certainly worth thinking about.
JM
-----Original Message-----
>From: "Cuy, Michael D. (GRC-RXD0)[Vantage Partners, LLC]" <michael.d.cuy@nasa.gov>
>Sent: Sep 5, 2012 11:14 AM
>To: "pietenpol-list@matronics.com" <pietenpol-list@matronics.com>
>Subject: Pietenpol-List: filling up the spar web sections---with 1/4" thick mahogany
or birch ply
>
>Tools,
>
>I built up the areas where I had to attach wing fittings with 1/4" mahogany plywood
on each side of
>the web area. I chamfered the ends of those filler plates on the advice of an
aeronautical engineer.
>
>I attached an example in the form of a sketch which should help to illustrate
how I did this.
>
>Mike C.
>
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Piet parts to Brodhead |
Dang, I'm stating to get that old familiar "we're going to Brodhead and you're
not..." feeling...again.
I hate that....
-----Original Message-----
>From: 899PM <rockriverrifle@hotmail.com>
>Sent: Sep 5, 2012 10:51 AM
>To: pietenpol-list@matronics.com
>Subject: Pietenpol-List: Re: Piet parts to Brodhead
>
>
>Skip,
>
>I will be there all weekend. Do you need help with anything?
>
>Mike Cushway
>
>--------
>PAPA MIKE
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=382448#382448
>
>
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Piet parts to Brodhead |
Mike,
Thanks for the offer.
When you see the attached, pulling a trailer with wings, come on over.
Though I belive Mike Weeden will have necessary help lined up.
Skip
> [Original Message]
> From: 899PM <rockriverrifle@hotmail.com>
> To: <pietenpol-list@matronics.com>
> Date: 9/5/2012 11:53:54 AM
> Subject: Pietenpol-List: Re: Piet parts to Brodhead
>
>
> Skip,
>
> I will be there all weekend. Do you need help with anything?
>
> Mike Cushway
>
> --------
> PAPA MIKE
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=382448#382448
>
>
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Piet parts to Brodhead |
Jim,
Know what you mean. When David said he was going to deliver his Piet to
Brodhead, I thought gee I'll bet he could use some help. The MAAC fly-in is
just icing on the cake.
Skip
> [Original Message]
> From: Jim Markle <jim_markle@mindspring.com>
> To: <pietenpol-list@matronics.com>
> Date: 9/5/2012 12:38:15 PM
> Subject: Re: Pietenpol-List: Re: Piet parts to Brodhead
>
<jim_markle@mindspring.com>
>
> Dang, I'm stating to get that old familiar "we're going to Brodhead and
you're not..." feeling...again.
>
> I hate that....
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Article on Brodhead in current Atlantic Flyer |
Nice...thx........planning to make it to Brodhead in 2013 (sans a/p - long ways
to go on the project still...)
Do not archive
--------
Jake Schultz - curator,
Newport Way Air Museum (OK, it's just my home)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382458#382458
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Looking for a steel tube piet |
Greg,
I happened to see this today on Barnstormers. Don't know anything about it, but
I thought I would pass it along. Hope it helps.
--------
Semper Fi,
Terry Hand
Athens, GA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382466#382466
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Looking for a steel tube piet |
Looks like it's more Piper than Piet!
Do not archive
----- Original Message -----
From: "jarheadpilot82" <jarheadpilot82@hotmail.com>
Sent: Wednesday, September 05, 2012 6:17 PM
Subject: Pietenpol-List: Re: Looking for a steel tube piet
> <jarheadpilot82@hotmail.com>
>
> Greg,
>
> I happened to see this today on Barnstormers. Don't know anything about
> it, but I thought I would pass it along. Hope it helps.
>
>
> --------
> Semper Fi,
>
> Terry Hand
> Athens, GA
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=382466#382466
>
>
>
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: a way to avoid routing spars |
So, Tools, are there savings to be gained (Both in your wallet as well as your
aircraft's gross weight) in building up an I-beam type spar or is it about even
with buying a solid spar and routing it. Or just leaving it alone and accepting
an extra 12 pounds of weight and no extra work.
Your thoughts?
--------
Semper Fi,
Terry Hand
Athens, GA
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382471#382471
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: a way to avoid routing spars |
Time or money...
The best for me is going to be culling through McCormick's for a nice 1 1/8" board
that's in the 4/4 pile (which they have), then resaw and make 1/2" planks,
and build up to an i-beam. I'll do like Mike's "next time" but make the parts
added a bit wider, use spruce instead of plywood (to avoid cross grain construction)
and then rout to give the requisite filets to avoid stress risers.
The down side is it's an enormous amount of work and will require a ton of tools,
which I'm lucky enough to have.
Based on the wood I bought there for my tail feathers, my 4 spars will cost around
$160 total.
It's ABSOLUTELY not worth carrying around the extra 12 lbs no matter how you do
it. Routing the spars is easy. If you don't want to rout, then use 3/4 solid.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382474#382474
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: a way to avoid routing spars |
Oh ya, the other part of the question.
Just buying and routing is the easiest, but will require me buying 4 boards so
will be about $320.
Not having access to a bandsaw that resaws well, a planer, tablesaw, a bazillion
clamps, a jointer and a place to build up a 30' long spar might make the solid
and rout option cheaper at $320.
Building up without resawing is kind of the worst of both worlds unless you can
get 1/2" (surfaced, 3/4 rough, which is rare) by the bdft.
Having access to planers and jointers allows the use of rough lumber. I'm not
sure if you can buy certified aircraft spruce rough or not. Presurfaced and certified
from AC Spruce is probably $20/bdft, where good spar grade (but not officially
certified) sitka from McCormicks is about $8/bdft.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382475#382475
Message 19
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Stromberg NA-S3A1 |
I'm sure there are several of you that fly, or have flown, with this carb. I
am wondering if it is characteristic for it to stumble if the throttle is
advanced too quickly.
Gary Boothe
NX308MB
Message 20
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Stromberg NA-S3A1 |
No accelerator pump. So, yes, it is.
It goes lean. I mitigate it by advancing the throttle (on a go around or touch
and go) with the carb heat still on (which richens the mixture), then after the
power is up, pulling it off.
Mine started popping on one flight. Thought I was just getting lazy and advancing
much too quickly. Turns out, one of my primer lines broke, allowing a cylinder
to lean out... So, hesitation seems normal and is mentioned by most who
fly that carb, but backfiring is NOT.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382479#382479
Message 21
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Stromberg NA-S3A1 |
Thanks, Tools!
Gary Boothe
NX308MB
-----Original Message-----
From: owner-pietenpol-list-server@matronics.com
[mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of tools
Sent: Wednesday, September 05, 2012 7:10 PM
Subject: Pietenpol-List: Re: Stromberg NA-S3A1
No accelerator pump. So, yes, it is.
It goes lean. I mitigate it by advancing the throttle (on a go around or
touch and go) with the carb heat still on (which richens the mixture), then
after the power is up, pulling it off.
Mine started popping on one flight. Thought I was just getting lazy and
advancing much too quickly. Turns out, one of my primer lines broke,
allowing a cylinder to lean out... So, hesitation seems normal and is
mentioned by most who fly that carb, but backfiring is NOT.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=382479#382479
Message 22
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Looking for a steel tube piet |
Thanks Terry. I called the guy yesterday. It was damaged when a hangar
collapsed on it. At any rate, it's a strange bird that needs a lot of work
to get it back in the air.
Greg
do not archive
On Wed, Sep 5, 2012 at 5:17 PM, jarheadpilot82
<jarheadpilot82@hotmail.com>wrote:
> jarheadpilot82@hotmail.com>
>
> Greg,
>
> I happened to see this today on Barnstormers. Don't know anything about
> it, but I thought I would pass it along. Hope it helps.
>
>
> --------
> Semper Fi,
>
> Terry Hand
> Athens, GA
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=382466#382466
>
>
--
Greg Bacon
Message 23
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | what I would do differently, wing spars and other things |
Jack=3B I hope that you can fly Scout sometime. You seem to have a good no
se for figuring out the effects that minor differences seem to result in=2C
and perhaps flying my airplane will give you some additional data points t
o put in your mental spreadsheet.
I can't say the same about Mike Cuy... I'm afraid that if he climbs into Sc
out we'll have a rebirth of "Fat Bottom Girl" on our hands =3Bo)
Just kidding=2C of course. Scout seems to be very forgiving of how much lo
ad the mission calls for. (Ahem!!)
do not archive
Oscar Zuniga
Air Camper NX41Cc
Medford=2C OR
Message 24
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Stromberg NA-S3A1 |
Gary...Yes it stumbles. Occasionally it even stops after a landing run. I blocked
a runway two weeks ago!
Tools method of using 'Carb Hot Air' is one I haven't tried so that is worth knowing.
Mine is also reported as 'popping' when descending over Strip throttled back with
Carb Hot Air on.
Other than that, it's a real old A75!
Gerry
Message 25
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: a way to avoid routing spars |
Uh, Jack, I think you'll find that to be 31 lb at
12% moisture content. At least according
to the US Forest Products Lab.
The closest you're going to get to that is
Western Red Cedar with a corresponding
reduction in strength.
Clif
Calculate it. Sitka Spruce has a density of 21.86 lbs/ft3.
Jack Phillips
NX899JP
Smith Mountain Lake, Virginia
-------------------------------------------------------------------------
-----
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|