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General control line discussion => Open Forum => Topic started by: Allan Perret on July 08, 2010, 01:31:06 PM

Title: John Miller ??? Pathfinder Twin article in FM
Post by: Allan Perret on July 08, 2010, 01:31:06 PM
You mentioned using most of the same parts (wing included) from the RSM Pathfinder LE kit. 
The LE has a tapered wing and the Twin is constant cord.
The LE is full fuse and Twin is profile.
How can they share most of the parts ???
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: dennis lipsett on July 08, 2010, 03:12:33 PM
You mentioned using most of the same parts (wing included) from the RSM Pathfinder LE kit. 
The LE has a tapered wing and the Twin is constant cord.
The LE is full fuse and Twin is profile.
How can they share most of the parts ???

Indeed, I read that also.
Dennis
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: Gordan Delaney on July 08, 2010, 04:34:27 PM
The article is wrong. It should have said Wing kit from Brodak profile 40.Plus the fuse is 1inch shorter than the single engine pathfinder
when using the 15teens. The Pathfinder L.E has a tapered wing and differant airfoil.
Hope this helps. Sorry I did not get to see  it before it went too the press.
Gordy
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: John Miller on July 09, 2010, 10:20:46 AM
The reference to the L.E. was inserted by the editors. I hope you all don't think I would be so out of it to make a mistake like that. %^@

In defense of the Editor, we got cut off on the phone where he had asked me specifically which kit parts could be used from. He went with the kit he was familiar with, the L.E. which was the last version they published. I followed up with an e-mail the next day, but he'd already made the refference and sent it off to be published.

I'm sorry for the confusion. It was totally inadvertant, and I've sent an e-mail to the editor suggesting that a correction be included in next months edition, as well a including the correct information with each set of plans ordered.
 H^^
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: john e. holliday on July 10, 2010, 09:16:22 AM
Maybe they will have a correction in the next issue.  Now is there going to be a kit in the future? H^^
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: John Miller on July 11, 2010, 11:16:08 AM
Most likely on both questions. H^^
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: Dennis Leonhardi on July 11, 2010, 12:28:07 PM
John and Gordy, congrats on the nice design and publication!  I have another question on the article.

It states that you, John, apply Monokote over silkspan.  Do you put any finish at all on the silkspan first, and do you use anything (such as Balsarite) to improve adhesion?  Please elaborate ...

Thanks!


Dennis
 ???
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: John Miller on July 11, 2010, 01:20:23 PM
First, Norm Whittle who lurks and sometimes posts on this forum, is the master at this technique. I'm still trying to get my kote finishes as nice as his almost flawless jobs.

I apply the silkspan with dope, in the normal manner. After it's dry. I use a couple of thinned, (50-50 or less) coats of dope. I don't want the silkspan sealed, just taughtened up a bit.

I make full sized patterrns of my trim design, leaving about a 1/8" overlap, and starting from the back, I'll use normal techniques to first tack, shrink, and iron down the edges. I believe that once tacked into place, it seems to work good using an iron, and a soft cotton glove, to shrink, then wipe with the glove to attach the kote to the silspan while still hot.

Using the silkspan as an under coat allows lots of advantages when applying the trim. Starting from the back, places the laps facing the rear, which helps avoid fuel residue creaping under the edges.

There's an old post I made years ago outlining my build of my Legacy, where in I went into more detail on this method.
It should still be in the archives.

Best wishess, John

Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: Dennis Leonhardi on July 11, 2010, 01:48:53 PM
Thanks John!

Dennis
 :)


First, Norm Whittle who lurks and sometimes posts on this forum, is the master at this technique. I'm still trying to get my kote finishes as nice as his almost flawless jobs.

I apply the silkspan with dope, in the normal manner. After it's dry. I use a couple of thinned, (50-50 or less) coats of dope. I don't want the silkspan sealed, just taughtened up a bit.

I make full sized patterrns of my trim design, leaving about a 1/8" overlap, and starting from the back, I'll use normal techniques to first tack, shrink, and iron down the edges. I believe that once tacked into place, it seems to work good using an iron, and a soft cotton glove, to shrink, then wipe with the glove to attach the kote to the silspan while still hot.

Using the silkspan as an under coat allows lots of advantages when applying the trim. Starting from the back, places the laps facing the rear, which helps avoid fuel residue creaping under the edges.

There's an old post I made years ago outlining my build of my Legacy, where in I went into more detail on this method.
It should still be in the archives.

Best wishess, John


Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: Allan Perret on July 12, 2010, 07:00:05 AM
There's an old post I made years ago outlining my build of my Legacy, where in I went into more detail on this method.
It should still be in the archives.
Best wishess, John
Tried searching for this but could not find it ???
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: Serge_Krauss on July 12, 2010, 10:15:35 AM
I think you'll find John's technique near the end of this epic contribution:

http://www.clstunt.com/htdocs/dc/dcboard.php?az=show_topic&forum=103&topic_id=74286&mesg_id=74286&listing_type=search

SK
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: Ward Van Duzer on July 12, 2010, 11:30:43 AM
Excellent! Thx Serge...


W.  H^^
Title: Re: John Miller ??? Pathfinder Twin article in FM
Post by: Tom Niebuhr on July 13, 2010, 06:48:51 PM
John and Gordon,
The Twin Pathfinder looks real good. Great article.

John,

What's the recent status on the German twin?