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Author Topic: O.S. LA engines  (Read 2147 times)

Offline Dudley Lang

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O.S. LA engines
« on: December 26, 2009, 03:48:49 PM »
I am just returning to control line flying after laying off in 1965.  I flew Fox 35's  and the traditional 4-2-4 break.  I am reading about using the LA engines and simply using a 4 inch pitch to slow them down.  I have also seen ads by guys who stunt tune this engines for a 4-2-4 break.  It would be cheaper to not make the modifications if the lower pitch approach works for flying the pattern.  I would welcome any input.  This may have already been covered, but I didn't see it.

Also, in the 60's we used cloth hinges.  What is the best way to install the pin nylon hinges without getting glue in the hinge?

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Offline Randy Powell

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Re: O.S. LA engines
« Reply #1 on: December 26, 2009, 03:51:07 PM »
Grease the barrel.
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Offline Dan McEntee

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Re: O.S. LA engines
« Reply #2 on: December 26, 2009, 04:26:06 PM »
  Build yourself some simple models to experiment with the different engines. See what is being used in your area. You will find the current crop of OS engines pretty user friendly. Your old Fox .35 will still perform well if you use the proper fuel and try a bit lower pitch on them also.  We play with head shims a lot more these days than was done back in the 60's and early 70's, and probably have a better selection of and know more about props. Go slow, and have some patience! You won't get it all accomplished in one or two trips to the flying field! y1
  As far as hinges, you can stil use the cloth if you like, lots of guys do, If you go for the never hinges, use a bit of Vasoline or drop of oil to keep the glue out of the hinge, and some guys use the new white glues and can be washed out with some water and a cotton swab.
   Some new stuff for youto learn, some stuff still the same, but lots of fun to be had! Welcome back to the circles!
   Type at you later,
  Dan McEntee
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Offline Phil Coopy

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Re: O.S. LA engines
« Reply #3 on: December 26, 2009, 05:24:35 PM »
Where ya from Dudley?

Phil
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Offline Tim Wescott

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Re: O.S. LA engines
« Reply #4 on: December 26, 2009, 05:27:57 PM »
When you glue pinned hinges, you'll probably be disappointed with CA glues for this task -- they set up too fast.  Use epoxy, and grease the 'working' part of the hinge as advised, and all will be well.
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Offline Steve Helmick

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Re: O.S. LA engines
« Reply #5 on: December 26, 2009, 08:51:45 PM »
The attachment below is one of the better and more inovative ways to install pinned hinges, by John Miller. I prefer to use a single pin, so the surface can be removed, or just to install after painting.

Regarding the .46LA, it's a sweetie. The .40LA isn't bad if you can find the right prop, but it isn't as easy to do, plus it weighs a bit more (smaller hole_ more material, less air). Lots of opinions/setup info can be found by using the "search" function.  H^^ Steve
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Offline dale gleason

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Re: O.S. LA engines
« Reply #6 on: December 26, 2009, 09:54:39 PM »
I place my monkote iron in a vise, by the handle, upside down, making sure the iron is horizontal. I scoop a small amount of petroleum jelly onto a Ball/Mason jar lid and place this on the iron. Just a little heat will melt the petroleum jelly to a liquid state. The hinge can be folded and then the barrel placed into the liquid which will wick into it. Setting the hinge aside, the liquid cools back to jelly, the hinge can be slathered with epoxy and inserted into the hinge slot and the glue will not enter the moving parts of the hinge...clean off any excess with an alcohol soaked paper towel.

I prefer epoxy for this application because I can leave my plane out in the rain and controls remain useable. Most of the time.

Other lids could be used, but the Ball/Mason lid gives it that Muncie "attitude".

 It takes a lot longer to do this than to type it.

dg

dg
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Dwayne

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Re: O.S. LA engines
« Reply #7 on: December 27, 2009, 07:36:53 AM »
Quote from: dale gleason on December 26, 2009, 09:54:39 PM
I place my monkote iron in a vise, by the handle, upside down, making sure the iron is horizontal. I scoop a small amount of petroleum jelly onto a Ball/Mason jar lid and place this on the iron. Just a little heat will melt the petroleum jelly to a liquid state. The hinge can be folded and then the barrel placed into the liquid which will wick into it. Setting the hinge aside, the liquid cools back to jelly, the hinge can be slathered with epoxy and inserted into the hinge slot and the glue will not enter the moving parts of the hinge...clean off any excess with an alcohol soaked paper towel.

I prefer epoxy for this application because I can leave my plane out in the rain and controls remain useable. Most of the time.

Other lids could be used, but the Ball/Mason lid gives it that Muncie "attitude".

 It takes a lot longer to do this than to type it.

dg

dg
Now that is kewl! Thanks for the tip!  y1 y1 #^
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Offline Allan Perret

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Re: O.S. LA engines
« Reply #8 on: December 27, 2009, 08:24:24 AM »
LA46 works good right out the box. 
Fuel, 5 or 10% nitro, 20% oil 50/50 castor/syn blend.
Props; lots of guys are having sucess with APC 12.25 x 3.75,
or ThunderTigre 11 x 4.5 
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Offline Dudley Lang

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Re: O.S. LA engines
« Reply #9 on: December 27, 2009, 02:19:57 PM »
Phil,  I grew up through high school in Many, Louisiana, moved to Shreveport, Louisiana, and I have been living in Longview, Texas for the last 17 years.  Dudley Lang
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Offline Michael Boucher

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Re: O.S. LA engines
« Reply #10 on: December 27, 2009, 02:35:15 PM »
I have a question about the mount hole pattern of the Fox 35 and O,S. LA 25 engines.  Are they the same?  Thanks, Mike  ???
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Offline kenneth cook

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Re: O.S. LA engines
« Reply #11 on: December 27, 2009, 04:38:20 PM »
      Michael, the La .25 and the Fox.35 are not interchangeable. They're very close but they will require you to plug and redrill. Ken
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Offline Douglas Ames

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Re: O.S. LA engines
« Reply #12 on: December 28, 2009, 09:18:36 AM »
The OS LA .25 is an excellent replacement for any older (baffled) .35 kit.

Went to a couple of Crawfish boils down in Longview, TX (Mom's) Nice area.
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Offline Michael Boucher

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Re: O.S. LA engines
« Reply #13 on: December 28, 2009, 03:42:08 PM »
Thanks for the information Kenneth, I appreciate it.  H^^
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