Nrrrd an engine suggestion for Ron Burn's P-51.

[frank mccune]

        Today ,I purchased the above model rtf sans engine.  The plane is 16oz. has a 36" wing span and 291 Sq. In. of wing area. The plans call for a .15-.20 engine but here is the rub.  In that engine size I have Veco .19 BB, Fox .19 and .25, Brodak .25 and ST G20/.23.   All great engines at about 6-7 oz. but are  too  heavy for this plane.  The only 2 other light engines that  other may make the weight restriction is a Cub .19 and a Fox .15X.  I am not sure that either of those engines would have enough grunt to pull the Mustang through the OTS pattern. Of the two, the Fox may be satisfactorily. I do have an older Magnum .15 that would be great if I could find a piston and cylinder for it.  Is there a source for these things?  In think that they are still being raced in the US.

        Thought comments?

                                                                                                                                                                        Tia,

                                                                                                                                                                         Frank McCune

[paw080]

        Today ,I purchased the above model rtf sans engine.  The plane is 16oz. has a 36" wing span and 291 Sq. In. of wing area. The plans call for a .15-.20 engine but here is the rub.  In that engine size I have Veco .19 BB, Fox .19 and .25, Brodak .25 and ST G20/.23.   All great engines at about 6-7 oz. but are  too  heavy for this plane.  The only 2 other light engines that  other may make the weight restriction is a Cub .19 and a Fox .15X.  I am not sure that either of those engines would have enough grunt to pull the Mustang through the OTS pattern. Of the two, the Fox may be satisfactorily. I do have an older Magnum .15 that would be great if I could find a piston and cylinder for it.  Is there a source for these things?  In think that they are still being raced in the US.

        Thought comments?

                                                                                                                                                                        Tia,

                                                                                                                                                                         Frank McCune

Hi Frank, how about a strong .09 cu"or an even stronger 1.0cc glow engine?   These should weigh

between 4 and 5 oz.  If you are setup to run diesels; then an .09 cu" at around 3.5-4 ozs or a light

Silver Swallow .15 at 4.8 ozs will fly your model on .015" x .57"  lines easily.   My Silver Swallow .15,

a plain bearing diesel using those same lines pulls a Dumas Tomahawk(330sq"s) through a rather ugly

pattern with plenty of overhead line tension.  I use a Taipan 9" X 4" prop. These Silver Swallow .15s(2.49cc)

can be found on ebay for $25-$35 each...Don't pay any more for one...

I just had another ebay thought, if you can find a Cox Medallion .15, that might be a best choice,

they are very light at 4.24 ozs.

Tony G

[Peter in Fairfax, VA]

Some thoughts. 

Fox .15x, Cox .15 or possibly Enya .09/.15, maybe O.S. Pet .099.   If you use a little nitro, let it turn up and fit it properly with break-in or setup, the Fox runs OK.  A Norvel Big Mig .074 is another possibility, though pricey.

The Fox engine is readily available.  For example, I know a seller that has one on a popular auction site at this moment.  I know this seller really well...

A review of the .15x from Peter Chinn is below.  Not sure it charged much from 1959 to 1975.

http://www.rcuniverse.com/forum/control-lines-231/9342709-fox-15-instructions.html#&gid=1&pid=1

[Gary Dowler]

I'd look for a good OS 10FP.  Should make a dandy motor for that plane.

Gary

[Steve Helmick]

Of the engines listed, I'd go with the .15X, if it's in good nick. You will need to find the right propeller...the wrong one and it'll be a big disappointment. I've used steel fin .15's but never had a .15X.  Steve

[ericrule]

If glow engine then the LA.15 or similar engine. If electric then the RSM 15 Competition system.

This Ron Burn designed profile P51D is a great flying model. A couple of years ago Larry Renger posted a 535 point score in Advanced Stunt at the Golden State Championships. Since the judges were none other than Dave Fitzgerald and Bob Whitely you just know the score was fully earned (These guys simply do not give points away - you have to earn every one).

For small fields this model is really hard to beat.  Enjoy!

[Steve Fitton]

I would get my hands on an FP-10