Today's Message Index:
----------------------
 
     1. 07:06 AM - Jeep Pietenpol motor/ magneto (aviken)
     2. 07:12 AM - Re: Re: CG vs Wheels Location (Michael Perez)
     3. 07:26 AM - widening jig (Douwe Blumberg)
     4. 08:36 AM - Re: Re: CG vs Wheels Location (Ryan Mueller)
     5. 09:21 AM - Re: Re: CG vs Wheels Location (Michael Perez)
     6. 09:30 AM - W&B info to Ryan M. please (William Wynne)
     7. 12:01 PM - Re: Jeep Pietenpol motor/ magneto (taildrags)
     8. 12:33 PM - Weight & Balance Spreadsheet (Jack Phillips)
     9. 02:00 PM - Re: Weight & Balance Spreadsheet (H. Marvin Haught)
    10. 02:10 PM - Re: Jeep Pietenpol motor/ magneto (aviken)
    11. 04:31 PM - Re: widening jig (Gardiner Mason)
    12. 05:08 PM - Re: widening jig (Don Emch)
    13. 05:27 PM - Re: Re: widening jig (Gardiner Mason)
    14. 06:07 PM - Re: Motor mount fittings (Keith)
    15. 06:59 PM - Re: Weight & Balance Spreadsheet (dgaldrich)
    16. 07:05 PM - Re: Re: Weight & Balance Spreadsheet (Gary Boothe)
    17. 09:37 PM - Re: A Couple of Welding Questions (macz@peak.org)
 
 
 
Message 1
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  | 
      
      
| Subject:  | Jeep Pietenpol motor/ magneto | 
      
      
      I couldn't find a magneto conversion for my 134 jeep motor , so I have been converting
      a omnix distributor base to match a slick mag.  Actually I expected it
      to be harder than it was, but after cleaning out the innards of the dist, I found
      it had a nice arm with two dowel pins in place to mount the disk that matches
      the magneto drive.  Then I had to turn a sleeve that fit the distributor
      case and also matches the magneto mounting ring.  I plan to rivet the pieces ive
      made together to keep them from shifting, then find a good aluminum tig welder
      to weld it all up.   
         My engine is running smooth now with a totally worn out distributor and burnt
      up points, so it should run great with a new mag .
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=420883#420883
      
      
      Attachments: 
      
      http://forums.matronics.com//files/magneto_1_337.jpg
      
      
Message 2
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  | 
      
      
| Subject:  | Re: CG vs Wheels Location | 
      
      Ryan, I can't tell you what people think nor what they do, or do not unders
      tand when they visit my site...sounds like you can. Impressive.=0A=0A- It
      's disappointing that this thread has changed from building landing gear to
       a debate on the quality/integrity of my DVDs.- Have you seen any of my D
      VDs? I'm just curious because-you seem to-have a lot of negative things
       to say about them.- I could be wrong, but it seems to me the only time y
      ou reply to any of my posts is to belittle, condescend, or otherwise have o
      ther than positive things to say. You've taken the time to review my websit
      e and count the-thousands of-words that describe my DVDs.- You have a
      lso taken the time to make note of the last 30 words on a particular paragr
      aph and post them to the list. Plus, you have taken time to add up-the nu
      mber of DVDs on the site, add up the cost and do some math to find a differ
      ence in price between them and a set of plans. -Sounds like quite the eff
      ort-just to make negative comments on a set of DVDs you have never seen. 
      That type of energy could be used in a positive manner. I'm surprised you
       haven't talked bad about the site itself...the colors, the layout, the siz
      e, etc. (maybe that's coming...)-Are you implying that because I have not
       built an airplane before, that because I am- not an engineer and because
       I am not a pilot, that I-therefor can't possibly have anything worth con
      tributing? Therefor my entire DVD series has no good useful information in 
      them at all?--Uh-huh...=0A=0AI usually let things go, roll off my back.
       I try to stay focused on the thread and stay respectful of others and what
       they post. However, there are times and issues that I will not just sit-
       idly by.=0A=0AI suggest rather than to further clutter up this list, anyon
      e wishing to discuss this topic further, they should contact me directly. B
      y phone would be the most productive. I am not looking for an argument, but
       some 1V1 conversation may clear up some misconceptions.=0A=0AIf God is you
      r co-pilot...switch seats.=0AMichael Perez=0APietenpol HINT Videos=0AKareta
      ker Aero=0Ahttp://www.karetakeraero.com/
      
Message 3
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  | 
      
      
      
      Hey Gardiner,
      
      
      You could add washers one by one to the jig until your mount tubes are
      correctly spaced, or close.  Then tack the thing together and remove it from
      the jig.  Bolt it onto the firewall and if you have to move some things
      around a bit, just cut the tacks.  Once it's bolted on, re-tack and add lots
      of small tacks everywhere so it can't warp.  You should then be able to
      finish the welds away from the firewall easily.  you could then conceivably
      cover up the planes front-end with a welding blanket if you are tigging and
      do a lot of the welds at that end of the mount.  Or just make put lots of
      tacks so it can't shift around and finish them off the plane.
      
      
      If you're gas welding, you'll have to obviously be more careful about the
      plane, but a welding tarp should protect it.
      
      
      If you have a nose tank, or there's any fuel anywhere around, you shouldn't
      try this technique.
      
      
      Douwe
      
      
Message 4
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  | 
      
      
| Subject:  | Re: CG vs Wheels Location | 
      
      Actually, it took more time reading your description of what I did than to
      actually do it. I read your page selling the videos, the browser provided
      the word count; you have a listing for your "Total Package", 8 for $170,
      and Piet plans are $100. I'm not the arbiter of good taste, so I have
      nothing to say about the design.
      
      I am not implying that because you have never built an airplane before, are
      not an engineer, or a pilot, you have nothing worth contributing, or that
      your videos may not contain useful information. I am making a statement on
      the incongruity of a person with those credentials marketing and selling
      (at least on your website, Barnstormers, and in the BPA newsletter) an
      extensive collection of "builder hints and step by step procedures" on how
      to build a Pietenpol.
      
      
      On Sun, Mar 23, 2014 at 9:09 AM, Michael Perez <speedbrake@sbcglobal.net>wrote:
      
      > Ryan, I can't tell you what people think nor what they do, or do not
      > understand when they visit my site...sounds like you can. Impressive.
      >
      >   It's disappointing that this thread has changed from building landing
      > gear to a debate on the quality/integrity of my DVDs.  Have you seen any of
      > my DVDs? I'm just curious because you seem to have a lot of negative things
      > to say about them.  I could be wrong, but it seems to me the only time you
      > reply to any of my posts is to belittle, condescend, or otherwise have
      > other than positive things to say. You've taken the time to review my
      > website and count the thousands of words that describe my DVDs.  You have
      > also taken the time to make note of the last 30 words on a particular
      > paragraph and post them to the list. Plus, you have taken time to add
      > up the number of DVDs on the site, add up the cost and do some math to find
      > a difference in price between them and a set of plans.  Sounds like quite
      > the effort just to make negative comments on a set of DVDs you have never
      > seen. That type of energy could be used in a positive manner. I'm surprised
      > you haven't talked bad about the site itself...the colors, the layout, the
      > size, etc. (maybe that's coming...) Are you implying that because I have
      > not built an airplane before, that because I am  not an engineer and
      > because I am not a pilot, that I therefor can't possibly have anything
      > worth contributing? Therefor my entire DVD series has no good useful
      > information in them at all?  Uh-huh...
      >
      > I usually let things go, roll off my back. I try to stay focused on the
      > thread and stay respectful of others and what they post. However, there are
      > times and issues that I will not just sit  idly by.
      >
      > I suggest rather than to further clutter up this list, anyone wishing to
      > discuss this topic further, they should contact me directly. By phone would
      > be the most productive. I am not looking for an argument, but some 1V1
      > conversation may clear up some misconceptions.
      >
      > Michael Perez
      > Pietenpol HINT Videos
      > Karetaker Aero
      > http://www.karetakeraero.com/
      >
      >
      
Message 5
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  | 
      
      
| Subject:  | Re: CG vs Wheels Location | 
      
      I think-the disconnect is that-my DVDs showcase how-I-am building
      -MY plane, not how to build-THE plane.-If that is the way people perc
      eive my website and ads in the BPA, etc. I need to address that.=0A=0AIf Go
      d is your co-pilot...switch seats.=0AMichael Perez=0APietenpol HINT Videos
      =0AKaretaker Aero=0Ahttp://www.karetakeraero.com/
      
Message 6
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  | 
      
      
| Subject:  | W&B info to Ryan M. please | 
      
      
      Builders,
      
      Here is a positive suggestion: All of you guys who would like to contribute your
      data to the W&B project should read the original articles to understand the
      format we used, and then send your data to Ryan by email and let him process it
      in a way that allows your contribution to be read by a new guy as a continuation
      of the original data set.
      
      How we measured the length of a motor mount for example (firewall to prop flange)
      and how we spoke in terms of distance from firewall to LE rather than inches
      of rake on the cabanes. Is a little different, but Ryan and I came to this for
      a reason after considering several systems. in most cases, you can take any
      info set and put it in these terms with simple addition and subtraction. The
      terminology that Ryan and I used comes into play, not when looking at one plane,
      but it is very useful when teaching a new builder how to alter a close example
      of a plane like his, to make his own plane suit his needs and goals. I thank
      guys in advance for contributing and putting it in the helpful format.
      
      A crucial element of our system is the computer algorithm (math formula) that Ryan
      developed that quickly spits out the maximum pilot weight that the plane can
      take before getting to the 20" aft limit. This is very importiant, because
      if you are a 165 pound guy with a data set and your plane is flying at 18", it
      is very hard for a 215 pound new guy to eyeball that and tell if he builds a
      clone of the plane if he will be in CG. With Ryan's program, this is immediately
      known. This is the single biggest reason for using the format.
      
      I did not want the project to be a one time deal. The concept that set data set
      can get bigger is good. Perhaps the additions can be published in the same format,
      written up by Ryan for the newsletter? Ryan is friends with Mr. Hofman,
      so this should work smoothly. There are a lot of people who get the newsletter
      who are not on this list, and the new contributions would expand the knowledge
      base and assist builders way into the future in the newsletters. It is a good
      feeling to have contributed to something lasting, something that will help other
      builders, many of whom you will never meet, but they will be thankful just
      the same. -ww.
      
      --------------------------------------------
      
      This is the last post for a while, we are prepping 16 hours a day from here until
      Corvair College #29, and then back to 10-12 a day until Brodhead. I hope to
      see many of you there. Dan Weseman, the guy who designed and built the Corvair
      powered Panther, on the cover of kitplanes last month, is my neighbor and said
      he is planning on bringing the plane back to Brodhead just as he did last year.
      I built the 3,000 cc Corvair in that plane, and you can see it flying aerobatics
      on youtube. He picked up 24 orders for planes since Oshkosh, and the plane
      and engine got rave reviews fro the editor of Kitplanes who flew it. It has
      also got a lot of coverage by the EAA, and will be featured in lots of publications
      this year. One of the reasons why I want to have the plane at Brodhead
      is to get a shot of it with the last original, to connect the latest work with
      Corvairs to BHP, the man that started it. I would like it to be formation air
      to air. The Panther can do 165mph on the top, but with the flaps down it will
      fly slower than a Piet.
      
      Dan's Company SPA-LLC, which he tooled up to built the kit as a 100% made in North
      America kit has been about 4 years in the making. He is not yet forty, but
      has about $200,000 invested in the project, all his own family's money, none
      borrowed. He purposely selected the Corvair as the best engine for the plane.
      It will take others, be it was designed around the Corvair. Everyone who has seen
      the plane fly thinks it was a very smart move. 
      
      I find it very ironic that experienced builders and industry people understand
      the Corvair, but here, where people admire and build BHP airframe designed by
      the man who started the entire world of flying Corvairs, there are still many
      people who openly question if the engine can even be made to work. -ww.
      
      -------------------------------------------------
      
      Over and out from Mr. NOAC........(nails on a chalkboard)
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=420890#420890
      
      
Message 7
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  | 
      
      
| Subject:  | Re: Jeep Pietenpol motor/ magneto | 
      
      
      I know this is a simplistic question, but does the Jeep distributor turn the same
      direction as the Slick mag?
      
      --------
      Oscar Zuniga
      Medford, OR
      Air Camper NX41CC "Scout"
      A75 power
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=420891#420891
      
      
Message 8
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  | 
      
      
| Subject:  | Weight & Balance Spreadsheet | 
      
      Okay,  Here is a spreadsheet that I developed to be able to compute weight &
      balance for a generic Pietenpol.  It requires the plane be completed, but it
      can be used to determine when the wing has been moved back far enough.  I
      have input the values from my Pietenpol, so you will need to just type over
      those values with the weights and measurement from your own airplane  Input
      values are red, calculated values are blue.
      
      
      The procedure is pretty simple.  All of the measurements are made using the
      firewall as the datum, so you can make most of the measurements with the
      tail on the ground, which is easier (and safer) than when the tail is
      supported on a stool or sawhorse.  The only measurements that must be made
      with the plane in level flight attitude are the distance from the firewall
      to the wing leading edge, and the distance from the firewall to the main
      gear axle and tailwheel axle.  For these three measurements you will need to
      use a plumb bob and a tape measure.  Strive for accuracy, because small
      variations in distance can have a large effect.
      
      
      You will to measure the distance to the middle of the fuel tank(s) which
      must be estimated to some extent.  You will also need to sit in the cockpit
      and make note of where your belt buckle is (the belt buckle is very close to
      the C.G. of a human body in a sitting position), then measure from there to
      the firewall.  Same for the front seat passenger (you will be surprised how
      little a passenger affects the CG position).  If you have a baggage
      compartment and/or a helmet box, measure from the firewall to the center of
      those spaces (or, if you really want to be conservative, measure to the back
      of each of those compartments to get worst case).
      
      
      You will need a good set of aircraft or race car scales.  Bathroom scales
      are worse than useless - most do not go up to 300 lbs and unless you have
      built your airplane exceedingly light, your main gear wheels will weigh over
      300 lbs eac.  Besides, bathroom scales are notoriously inaccurate -
      particularly at the extremes of their range.  While building mine I weighed
      it several times with digital electronic bathroom scales.  My estimated
      weight turned out to be within 80 lbs of my finished weight on aircraft
      scales.  You need better accuracy than that.
      
      
      Position the plane in level flight attitude on the scales after setting the
      tare to include the weight of any supports and chocks that are on the
      scales.  Enter the data in the spreadsheet and then input weights for pilot,
      passenger, fuel and baggage.  The spreadsheet will calculate the CG position
      with respect to the firewall, the CG position with respect to the wing
      leading edge, and the CG position as a percentage of Mean Aerodynamic Chord.
      You can play around a bit, inputting different weights to see what effect
      they have on the balance.  You will have to do trial and error to find the
      max weight pilot that will keep the CG ahead of 20" aft of the leading edge
      - I don't have the fancy algorithm that Ryan and William put in their
      program to determine this automatically.
      
      
      This spreadsheet is in Excel 2003, so unless your software is even older
      than mine, if you have Excel on your computer you should be able to use the
      spreadsheet.
      
      
      Good luck and don't hesitate to ask questions if it is not clear how to use
      it.
      
      
      Jack Phillips
      
      NX899JP
      
      Smith Mountain Lake, Virginia
      
      
Message 9
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  | 
      
      
| Subject:  | Re: Weight & Balance Spreadsheet | 
      
      As a lurker, and following along the weight and balance thread, it was 
      interesting to enter different configurations as discussed over the last 
      couple of days or so into your spreadsheet and then see the effect on 
      where the CG ends up.  Needed to be doing something constructive, like 
      completing a cabinet making project, but I've just frittered away an 
      hour playing with the spread sheet!  Very interesting and educational!  
      For example, moving the gear to the wing leading edge position changes 
      the CG to almost it's most forward recommended location as a percentage 
      of MAC.  Likewise, moving the wing back 1 inch, moves the CG location 
      dramatically forward to 31.56 of the MAC.  
      
      This goes into my "keeper file"  - Thanks, Jack
      
      M. Haught 
      On Mar 23, 2014, at 2:32 PM, Jack Phillips wrote:
      
      > Okay,  Here is a spreadsheet that I developed to be able to compute 
      weight & balance for a generic Pietenpol.  It requires the plane be 
      completed, but it can be used to determine when the wing has been moved 
      back far enough.  I have input the values from my Pietenpol, so you will 
      need to just type over those values with the weights and measurement 
      from your own airplane  Input values are red, calculated values are 
      blue.
      >  
      > The procedure is pretty simple.  All of the measurements are made 
      using the firewall as the datum, so you can make most of the 
      measurements with the tail on the ground, which is easier (and safer) 
      than when the tail is supported on a stool or sawhorse.  The only 
      measurements that must be made with the plane in level flight attitude 
      are the distance from the firewall to the wing leading edge, and the 
      distance from the firewall to the main gear axle and tailwheel axle.  
      For these three measurements you will need to use a plumb bob and a tape 
      measure.  Strive for accuracy, because small variations in distance can 
      have a large effect.
      >  
      > You will to measure the distance to the middle of the fuel tank(s) 
      which must be estimated to some extent.  You will also need to sit in 
      the cockpit and make note of where your belt buckle is (the belt buckle 
      is very close to the C.G. of a human body in a sitting position), then 
      measure from there to the firewall.  Same for the front seat passenger 
      (you will be surprised how little a passenger affects the CG position).  
      If you have a baggage compartment and/or a helmet box, measure from the 
      firewall to the center of those spaces (or, if you really want to be 
      conservative, measure to the back of each of those compartments to get 
      worst case).
      >  
      > You will need a good set of aircraft or race car scales.  Bathroom 
      scales are worse than useless ' most do not go up to 300 lbs and 
      unless you have built your airplane exceedingly light, your main gear 
      wheels will weigh over 300 lbs eac.  Besides, bathroom scales are 
      notoriously inaccurate ' particularly at the extremes of their range.  
      While building mine I weighed it several times with digital electronic 
      bathroom scales.  My estimated weight turned out to be within 80 lbs of 
      my finished weight on aircraft scales.  You need better accuracy than 
      that.
      >  
      > Position the plane in level flight attitude on the scales after 
      setting the tare to include the weight of any supports and chocks that 
      are on the scales.  Enter the data in the spreadsheet and then input 
      weights for pilot, passenger, fuel and baggage.  The spreadsheet will 
      calculate the CG position with respect to the firewall, the CG position 
      with respect to the wing leading edge, and the CG position as a 
      percentage of Mean Aerodynamic Chord.  You can play around a bit, 
      inputting different weights to see what effect they have on the balance. 
       You will have to do trial and error to find the max weight pilot that 
      will keep the CG ahead of 20=94 aft of the leading edge ' I don=92t 
      have the fancy algorithm that Ryan and William put in their program to 
      determine this automatically.
      >  
      > This spreadsheet is in Excel 2003, so unless your software is even 
      older than mine, if you have Excel on your computer you should be able 
      to use the spreadsheet.
      >  
      > Good luck and don=92t hesitate to ask questions if it is not clear how 
      to use it.
      >  
      > Jack Phillips
      > NX899JP
      > Smith Mountain Lake, Virginia
      > <Generic Weight & Balance Spreadsheet.xls>
      
      
Message 10
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  | 
      
      
| Subject:  | Re: Jeep Pietenpol motor/ magneto | 
      
      
      Yes fortunately I found this new mag on ebay .  it turns the right direction and
      though it is a slick mag it was made for military 4 cyl motors for generators
      and such.  It would not be considered airworthy by the faa on a certified aircraft.
      But my bet is it is just as good as the certified mag, since it had to
      meet mil spec.
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=420896#420896
      
      
Message 11
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  | 
      
      
| Subject:  | Re: widening jig | 
      
      Hey Douwe, I have been paying with it all day and I have decided to try your
       way by loosing the jig and spreading the jig to where it will meet the fire
      wall mounts. Then tack it into place while on the firewall then remove it to
       finish welding. My Tig guy says he can do this. Cheers, Gardiner
      
      Sent from my iPad
      
      On Mar 23, 2014, at 10:25 AM, "Douwe Blumberg" <douweblumberg@earthlink.net>
       wrote:
      
      > Hey Gardiner,
      >  
      > You could add washers one by one to the jig until your mount tubes are cor
      rectly spaced, or close.  Then tack the thing together and remove it from th
      e jig.  Bolt it onto the firewall and if you have to move some things around
       a bit, just cut the tacks.  Once it=99s bolted on, re-tack and add lo
      ts of small tacks everywhere so it can=99t warp.  You should then be a
      ble to finish the welds away from the firewall easily.  you could then conce
      ivably cover up the planes front-end with a welding blanket if you are tiggi
      ng and do a lot of the welds at that end of the mount.  Or just make put lot
      s of tacks so it can=99t shift around and finish them off the plane.
      >  
      >  
      > If you=99re gas welding, you=99ll have to obviously be more ca
      reful about the plane, but a welding tarp should protect it.
      >  
      > If you have a nose tank, or there=99s any fuel anywhere around, you s
      houldn=99t try this technique.
      >  
      > Douwe
      > 
      > 
      ==========================
      =========
      ==========================
      =========
      ==========================
      =========
      ==========================
      =========
      > 
      
Message 12
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  | 
      
      
| Subject:  | Re: widening jig | 
      
      
      Gardiner,
      
      That sounds like it oughtta work.  If you could, when you're done, just set it
      back to the standard width for the next guy.
      
      Good Luck!
      
      Don Emch
      NX899DE
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=420906#420906
      
      
Message 13
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| Subject:  | Re: widening jig | 
      
      
      Don't worryDon. I am not going to alter the jig. Gardiner
      
      Sent from my iPad
      
      On Mar 23, 2014, at 8:08 PM, "Don Emch" <EmchAir@aol.com> wrote:
      
      > 
      > Gardiner,
      > 
      > That sounds like it oughtta work.  If you could, when you're done, just set it
      back to the standard width for the next guy.
      > 
      > Good Luck!
      > 
      > Don Emch
      > NX899DE
      > 
      > 
      > 
      > 
      > Read this topic online here:
      > 
      > http://forums.matronics.com/viewtopic.php?p=420906#420906
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      
      
Message 14
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  | 
      
      
| Subject:  | Re: Motor mount fittings | 
      
      Great picture of this, thanks
      Keith goff
      
      Sent from my iPad
      
      > On Mar 22, 2014, at 10:24 PM, santiago morete <moretesantiago@yahoo.com.ar
      > wrote:
      > 
      > Here is another idea
      > 
      > Santiago
      > <P4010030.JPG>
      
Message 15
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| Subject:  | Re: Weight & Balance Spreadsheet | 
      
      
      Waaiiit a minute.  Moving the location of the wheels should have very little, if
      any, effect on CG.  What DOES change, from a CG perspective, when you move the
      wheels forward is the weight on the tail wheel.  A couple of pounds increase
      makes a large difference since the arm is so long and moving the wheels forward
      increases it.  Using Jack's spreadsheet, I added just 5 pounds to the tailwheel
      weight and it moved the CG aft by 1 inch.  That's 20% of the total allowable
      range.  A Scott 2000 tailwheel from a Piper Cub is about five pounds heavier
      than an original BHP tail skid.  As Jack, and others, have said, accurate
      measurement is important.  Bathroom scales are for my fat ass, not aircraft.
      
      You have correctly noticed that moving the wing also has almost a 1 for 1 relationship
      to CG.  Moving the wing aft 1 inch moves the CG almost 1 inch forward
      and is by far the most effective way of achieving a correctly balanced airplane.
      That's one of the advantages of this design is that it's relatively easy to
      do since the cabanes are equal length and parallel, more or less.
      
      Dave
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=420910#420910
      
      
Message 16
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  | 
      
      
| Subject:  | Re: Weight & Balance Spreadsheet | 
      
      
      Moving the axel only changes the weight on the tail while on the ground...not in
      the air.
      
      Gary
      NX308MB
      
      Sent from my iPhone
      
      > On Mar 23, 2014, at 6:59 PM, "dgaldrich" <dgaldrich@embarqmail.com> wrote:
      > 
      > 
      > Waaiiit a minute.  Moving the location of the wheels should have very little,
      if any, effect on CG.  What DOES change, from a CG perspective, when you move
      the wheels forward is the weight on the tail wheel.  A couple of pounds increase
      makes a large difference since the arm is so long and moving the wheels forward
      increases it.  Using Jack's spreadsheet, I added just 5 pounds to the tailwheel
      weight and it moved the CG aft by 1 inch.  That's 20% of the total allowable
      range.  A Scott 2000 tailwheel from a Piper Cub is about five pounds heavier
      than an original BHP tail skid.  As Jack, and others, have said, accurate
      measurement is important.  Bathroom scales are for my fat ass, not aircraft.
      > 
      > You have correctly noticed that moving the wing also has almost a 1 for 1 relationship
      to CG.  Moving the wing aft 1 inch moves the CG almost 1 inch forward
      and is by far the most effective way of achieving a correctly balanced airplane.
      That's one of the advantages of this design is that it's relatively easy
      to do since the cabanes are equal length and parallel, more or less.
      > 
      > Dave
      > 
      > 
      > 
      > 
      > Read this topic online here:
      > 
      > http://forums.matronics.com/viewtopic.php?p=420910#420910
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      > 
      
      
Message 17
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| Subject:  | Re: A Couple of Welding Questions | 
      
      
      I have a Smith torch and I love it, and I feel the quality is as good as
      any you can get.
      --Mac in Oregon
      
      
      > <jarheadpilot82@hotmail.com>
      >
      > I have a couple of welding questions that I hope some of you can help me
      > answer. Here is the situation - a friend of mine in my EAA Chapter has all
      > of his now passed grandfather's tools (he was  Mechanic at Delta Air Lines
      > for over 35 years) My friend is building an RV-10 so he has little use for
      > the welding equipment, so he has offered it to me. I have read some but
      > have no one to really guide me on the following questions, so your help is
      > appreciated.
      >
      > 1. The tanks have some level of Oxygen and Acetylene in them but the tanks
      > have not been tested in who knows when (I have not really looked for the
      > last date stamped onto them. Is it safe to use them ntl empty? Or should I
      > take them in and swap them for other, newer, full tanks?
      >
      > 2. The hoses appear to be okay (no cracks), but I have not yet pressurized
      > them and sprayed them with soapy water to check for any leaks. Should I
      > just go ahead and buy new ones? I am guessing the hoses have been coiled
      > up easily 6 or 8 years since last used.
      >
      > 3. The torch it self is a Smith and I have tip sizes 200, 203, and 205. I
      > replaced the o-rings on the tips. Should I take the torches somewhere to
      > have them inspected? Can they be rebuilt, if needed?
      >
      > 4. The regulator is the 2-stage type. Do I need to have them inspected as
      > well? Can they be inspected and repaired if needed?
      >
      > Obviously, I am trying to ensure the equipment is in good working order
      > before using them. Thanks for the advice.
      >
      > --------
      > Semper Fi,
      >
      > Terry Hand
      > Athens, GA
      >
      > USMC, USMCR, ATP
      > BVD DVD PDQ BBQ
      >
      >
      > Read this topic online here:
      >
      > http://forums.matronics.com/viewtopic.php?p=420824#420824
      >
      >
      
      
 
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