What size plane for a OS 25VF

[Leester]

I recently bought a NIB 25 VF. I've never used a pipe before and was wondering what would be the size of plane to use this engine in.  The search came up with a Vector and a mention of an Ares, but remember this would be my first pipe set up. TIA

[Alan Hahn]

I am sure this engine is equal to the LA40 type engine (and certainly more than a LA25 or FP20-25), so I am guessing that as long as you are happy with a low pitch setup, it will work fine on those LA40 equivalent planes. As a note, I fly a TF ARF FliteStreak on a Fox 15BB using a 7-4 prop running pretty high rpm. It is a lot of fun.

[peabody]

A Nobller or a Vector would top my list......

[Trostle]

The Eliminator 1 by Mike Starrett was published in Flying Models, May 1996.  It was designed around the OS 25VF with a tuned pipe.

Randy Smith can rework the OS 25VF to make it more compatible for its application to control line stunt.  Randy has sold pipes for this engine.  I do not know if he still has them available.

This design was published when Bob Hunt was editor of FM.  Bob has flown this airplane and gives it high marks.  He might want to comment on it here.  It is a moderate sized airplane and with the piped engine, has all of the benefits that piped engines give.  This airplane flies in wind that will keep unpiped ships on the ground.  It is a clean looking model and it is worth looking at.

The FM plan number is CF 993.

Keith

[Andrew Hathaway]

I looked into the 25VF and decided the second hand prices were too high.  Instead I picked up a couple 25FSR's, and eventually switched the 25F ABC.  The ABC engine specs out pretty close to the 25 VF but with side exhaust.  I'm running a 25F on a ARF Primary Force.  It's turning a 10x3 APC prop at about 12,000rpm on the ground and carries 63-65ft of lines without a problem.  Before the Primary Force I ran the 25FSR on a Flite Streak-ish type plane and a kit built Twister.  We've flown that Twister with several of the usual 40's, and the ST G21-46, and the piped 25 put out the most power.  I'd expect the 25VF to be really happy on any traditional 40 size plane.  The Eliminator article in Flying Models several years back is worth a look, but he doesn't talk much about the engine/pipe setup, except to say the plane was designed for a 25VF and would work with a 40fp.

[Leester]

Does anyone have a picture of the Eliminator ??

[Randy Powell]

Leester,

To be more broad, you are looking for a plane in the 550-600 square in range and built around 45oz. Lighter is better. So some of the planes you noted are fine. Pat Johnston has several planes in this range in his plan library.

[Leo Mehl]

John Miller Pathfinder twin. Flys real good!

[Andrew Hathaway]

Here's a plan view of the Eliminator.

[Steve Bakac]

 My Vector flys great with a vf 25 on pipe .Just keep it under 45oz max no more or you will be asking alot of the 25 and you will enjoy it.

[rustler]

Check which 25 you have. VF sounds like the low timed one, but there is a ducted fan version called DF. I'm just not sure if the correct name is "DF" or "VF DF". Check with an expert which pipe goes with which version, and if one is recommended more than the other.
The Eliminator looks a good bet to try a pipe without going to one of the big models, and the "good in wind" comment sounds very interesting.

[Bill Little]

Dropping in to say hello!

Billy Werwage cut into his Perroquet (basically a '59 Ares size airplane) and installed a VF25 and pipe.  He had used this plane at a World's, IIRC, with a HP40.  His comments were along the lines that he would NOT change it back.  He was using an APC 10-4 with it.

[Will Hinton]

I saw the Eliminator fly in Cleveland the year before it was published, it was Mike's original, and he had us all stopped in our tracks to watch.  When the flight was over the only comments I heard were "Textbook!"  That was the day Bob Hunt said he would publish it.
It is a fantastic airplane and is without flaps if I remember correctly! 
As to the DF  or VF designations the VF is the clpa choice - I flew the 46VF for four years and loved it.
Blessings,
Will

[Bill Little]

I saw the Eliminator fly in Cleveland the year before it was published, it was Mike's original, and he had us all stopped in our tracks to watch.  When the flight was over the only comments I heard were "Textbook!"  That was the day Bob Hunt said he would publish it.
It is a fantastic airplane and is without flaps if I remember correctly! 
As to the DF  or VF designations the VF is the clpa choice - I flew the 46VF for four years and loved it.
Blessings,
Will

Brother Will,

The published plane has flaps. (and the wing/tail are inline!)

[gary tultz]

Like Brother Bill said. I was judging that day. It was so windy, most fliers passed. Mike zipped right through with that little job. We were amazed. Prompted Hunt to publish it.Prompted Werwage to give the Perroquet the "Operation"    Rainman  aka  Gary T.

[Will Hinton]

Bill & Gary,
I sit corrected!  (Why would I be standing at the computer?)  I had forgotten the wind that day, Gary, but then again, it was Cleveland, huh?  I still would like to build that airplane, but have sooooooooooooooooo many projects in front of it!
Blessings,
Will

[gary tultz]

Happy New Year to you Will. Projects-projects, Me too. I have a signed copy of Jack Sunderland's Hawker Hunter plans. I also have a pair of K&B 3.5 FIRE engines (.21) I have butchered,er Dremeled the cyl. timing. They run sweet on The small .25 size Les Nering pipes I have.I only got as far as making the rib templates for the Hunter when it dawned on me how small and streamlined the plane really is. If I ever get around to it,it should be slick on a 10/3   10/4 prop.           Rainman   aka   Gary T.         PS  Werwage used to make .25 size pipes. Randy may still have some.

[Will Hinton]

Gary,
If you can get a buck made for the 25 pipe I can make you a pair.  It can be made from hardwood on a wood lathe.  Mine ain't as pretty as some but they work!
Blessings,
Will

[gary tultz]

Will, I have two 25 size Nering pipes. You could use one to make a mandrel maybe?