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Author Topic: OS 60 FP STUNT ENGINE  (Read 2850 times)

Offline Greg Howie

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OS 60 FP STUNT ENGINE
« on: November 08, 2012, 02:54:12 AM »
I have done a search and cant find anybody using the os 60 fp for stunt. the ??? la 46 fp 40 sure so why not the os 60 ?  ::) then the 65 la or the 60 h. I love os engines and cant understand why nobody is using one of them. ???
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Oh ....I see ,you mean the ones on a string ?

Greg Howie

Offline Andrew Tinsley

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Re: OS 60 FP STUNT ENGINE
« Reply #1 on: November 08, 2012, 03:11:11 AM »
Hello Greg,
Just take a look at the weight of the FP60 and compare that to say the weight of the old ST V60. I suspect this is the main reason why you don't see many in the stunt circle. This is from memory and I am quite prepared to be proven wrong!
The cheaper OS engines like the FPs and LAs are on the whole excellent stunt  engines, the FP20 and LA 46 being prime examples. The downside is that they are not exactly top quality. I have worn out two LA 46s for example (not all that much time on them either). There are much better quality engines around for less than LA prices, the TT GP42 being an excellent example.
Having said that, the cheaper OS engines are good stunt units and cheap to buy and rebuild.

Regards,

Andrew.
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Offline Randy Cuberly

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Re: OS 60 FP STUNT ENGINE
« Reply #2 on: November 09, 2012, 05:35:49 PM »
Quote from: Greg Howie on November 08, 2012, 02:54:12 AM
I have done a search and cant find anybody using the os 60 fp for stunt. the ??? la 46 fp 40 sure so why not the os 60 ?  ::) then the 65 la or the 60 h. I love os engines and cant understand why nobody is using one of them. ???

If you want a fairly large very powerful OS engine that can give a very good stunt run and weighs only 14 oz look into the OS55AX definitely more powerful than the FP60 and 5 oz lighter.
Look further down (Pg 2) in this same forum and you will find a thread on the OS55AX started by me and detailing the simple set-up to make one of these engines in to a very good (if a little heavy) Stunt engine for a large Stunter.

Randy Cuberly
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Randy Cuberly
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Offline phil c

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Re: OS 60 FP STUNT ENGINE
« Reply #3 on: November 20, 2012, 06:33:54 PM »
If you do a little checking, the LA 65 weighs "18.9" oz.,  including a 5.9 oz. muffler.  So the bare engine with a venturi and needle valve would weigh about 13 oz.  Give or take a few grams.  The few posts I've seen from folks who have tried them say they run well.  Mainly it would be a matter of finding the right prop and venturi size for your plane.
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phil Cartier

Offline Randy Cuberly

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Re: OS 60 FP STUNT ENGINE
« Reply #4 on: November 26, 2012, 10:10:42 AM »
Quote from: phil c on November 20, 2012, 06:33:54 PM
If you do a little checking, the LA 65 weighs "18.9" oz.,  including a 5.9 oz. muffler.  So the bare engine with a venturi and needle valve would weigh about 13 oz.  Give or take a few grams.  The few posts I've seen from folks who have tried them say they run well.  Mainly it would be a matter of finding the right prop and venturi size for your plane.

Phil,
I'm not sure where your weights came from but OS claims 18 OZ for the LA65 WITHOUT the muffler (which by the way weighs 3.8 oz).
On my electronic scale my LA65 weighs 17.9 oz with out the muffler.

Randy Cuberly
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Randy Cuberly
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Offline dennis lipsett

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Re: OS 60 FP STUNT ENGINE
« Reply #5 on: November 28, 2012, 02:13:22 PM »
I have an LA65 that I got on Rite Auction at a more then reasonable price. With venturi,ST/nva and homemade tongue muffler it is 17.4 oz.
All right it's heavier then you would put on your next world beater, so what. If your not out to whip the world there are opportunities to use these unloved but truly great running engines. I'm going to be doing a 900 sq in Combat streak, why you ask? simply because I can and I like the model. The nose is short enough to use that engine and it's earmarked for it. Did a 900 sq in profile F/S and the front end weighs that much and you would be hard put to find a nicer flying profile model.
So unless your strictly competition minded keep all of your options open. Your enjoyment of the hobby can take a real jump forward.
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Offline Chris Wilson

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Re: OS 60 FP STUNT ENGINE
« Reply #6 on: November 28, 2012, 03:31:30 PM »
Quote from: dennis lipsett on November 28, 2012, 02:13:22 PM
I have an LA65 that I got on Rite Auction at a more then reasonable price. With venturi,ST/nva and homemade tongue muffler it is 17.4 oz.
All right it's heavier then you would put on your next world beater, so what. If your not out to whip the world there are opportunities to use these unloved but truly great running engines. I'm going to be doing a 900 sq in Combat streak, why you ask? simply because I can and I like the model. The nose is short enough to use that engine and it's earmarked for it. Did a 900 sq in profile F/S and the front end weighs that much and you would be hard put to find a nicer flying profile model.
So unless your strictly competition minded keep all of your options open. Your enjoyment of the hobby can take a real jump forward.

Love your thinking Dennis!

Can you please get back to us on how the Mega Streak flies?
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Offline Bill Little

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Re: OS 60 FP STUNT ENGINE
« Reply #7 on: November 28, 2012, 04:07:45 PM »
In this situation I agree with Dennis L. 

Unless someone is working to win Open stunt at the NATS, and actually just enjoys flying a C/L plane, almost any engine can not be ruled out.  And there are a lot of engines that work great that get overlooked because one, or more, top level guys say it is too heavy.  Getting the model balanced at the right point, and getting it trimmed to fly the way the pilot likes is the most important factor in these situations.

So, if someone already HAS a .60FP or  .65LA and isn't looking to competition at the top levels using these engines makes good sense.

BIG Bear
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Offline Chris Wilson

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Re: OS 60 FP STUNT ENGINE
« Reply #8 on: November 28, 2012, 04:34:46 PM »
Quote from: Bill Little on November 28, 2012, 04:07:45 PM
In this situation I agree with Dennis L. 
........., almost any engine can not be ruled out.  .........................


Does this include my big diesels Bill?  ;D
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MAAA AUS 73427

You have enemies? Good. That means you've stood up for something, sometime in your life.
 Nothing in life is so exhilarating as to be shot at without result.  It's not enough that we do our best; sometimes we have to do what's required

Offline Bill Little

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Re: OS 60 FP STUNT ENGINE
« Reply #9 on: November 29, 2012, 10:13:13 AM »
Quote from: Chris Wilson on November 28, 2012, 04:34:46 PM
Does this include my big diesels Bill?  ;D

Totally!

BIG Bear
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Big Bear <><

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Offline Andrew Tinsley

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Re: OS 60 FP STUNT ENGINE
« Reply #10 on: November 29, 2012, 11:32:19 AM »
My initial reply was an explanation of why most people don't fly the 60 FP et al. I am totally in agreement with the recent comments by Dennis. I have NEVER flown stunt competitvely and NEVER will. So I don't care what I fly. I like to try out what the experts use, to see what it is like at the top. I get FAR more fun from flying old diesels and sparkies.
If you want to fly an FP60, then go right ahead and do it. More importantly enjoy it too. There has been far too much nit picking lately. Enjoying your flying and building is what it should be all about.

Regards,

Andrew.
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Offline Mike Greb

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Re: OS 60 FP STUNT ENGINE
« Reply #11 on: November 29, 2012, 02:16:22 PM »
I wonder how many wonderful engines have been passed over because they were "Too Heavy"?  Fox Ealgle 1, K&B/Veco60,and the old St G60 come to mind.  A few years a go, a local modeller had a great running G60(Pre Bluehead).  Another local modeller has a very good running OS60fp, the airplane was built for it and had a very short nose.  Both of those motors were worked on a little bit, but would have been excellent motors in the appropriate plane.
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Offline Chris Wilson

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Re: OS 60 FP STUNT ENGINE
« Reply #12 on: November 29, 2012, 02:33:21 PM »
Four strokes would never have had a look if an exclusive attitude was used every time.
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MAAA AUS 73427

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Offline MarcusCordeiro

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Re: OS 60 FP STUNT ENGINE
« Reply #13 on: December 01, 2012, 05:16:49 PM »
I think the fun is getting the engine to work, whatever it is...
I just don't like it when people say one should lock the RC carb and you're set.
I would like to try one of those FP60s...

Marcus
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Offline dennis lipsett

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Re: OS 60 FP STUNT ENGINE
« Reply #14 on: December 06, 2012, 12:23:35 PM »
Quote from: Chris Wilson on November 28, 2012, 03:31:30 PM
Love your thinking Dennis!

Can you please get back to us on how the Mega Streak flies?
This is my largest Flite Streak. kitted by pat King with a 62.5 W/S and 895 Sq in. used an Evolution 60 and put a little more wood up front to compensate for it's light weight. very good flying model and has been flown by enough people to verify it's really good flying qualities
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Offline phil c

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Re: OS 60 FP STUNT ENGINE
« Reply #15 on: December 15, 2012, 10:56:05 AM »
Quote from: Randy Cuberly on November 26, 2012, 10:10:42 AM
Phil,
I'm not sure where your weights came from but OS claims 18 OZ for the LA65 WITHOUT the muffler (which by the way weighs 3.8 oz).
On my electronic scale my LA65 weighs 17.9 oz with out the muffler.

Randy Cuberly

Not having a need for an RC 60 I didn't buy one to weigh.  Went by Tower Hobbies tech notes.  I stand corrected.  There are many more equally runnable 60's in the 12 oz. range.  The EVO is a good example.
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phil Cartier

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