Will a new OS 46 LA-S fly the RSM Shark 45?

Thanks in advance.

It's easy for these to come out on the stout side, ya....  if you can find a Tom Lay ST G-51 (at least) then you should be OK. On the advise of someone who flew the originals with Lew and since, move the engine back 1/2" and use an adjustable elevator horn. He ought to know. Love mine!

I emailed Randy to see if he had the Enya 50 SS in stock.

Dave T..thanks for the info.

Engines are really difficult to come by; good ones.

Will see if Randy has the Enya.  There is a guy in Great Britain who sells Enyas but I think shipping could be high.  I emailed him, though.  I am sure you have heard of him?  Steve Webb.

I know the Ro Jett is the best out there.  Pricey, but I am also a proponent of buy once - cry once.  Quality is worth paying for.

Sooo...If I cannot dig up the Enya, I will look at the RoJett 61.  I have seen it in action.  Pretty nice engine.  Question becomes cast or machined?

I don't think Randy will have an SS-50, hope I'm wrong because it is a great engine. Enya's are made in batches, get 'em while you can. If you miss out-wait till the next batch is turned out. A batch of SS-50's were releaseed about a year ago and sold out fast...yes, I got one. A good choice for a Shark 45. Shtterman on E-Bay is a good source of Enyas now that Randy is not handling them any longer. Currently the CSX 61's are available. They would be a good choice however they are rear exhaust so the front of the model would have to be modified to accept an inline muffler.
RO-Jett 61's are a great choice. BSE or Cast, either one. They run the same IMHO, (have run both).The BSE's are prettier (and more expensive), cast are a bit lighter and take a bit longer to break in. Most people opt for the RE however they can be ordered as SE engines. For less $$ Randy-tuned ST-51's are excellent. Either buy a new on on Da-Bay (they show up occassionally) and send it to Randy to modify or see if he has any in stock. This would be my choice for powering a Shark 45 if $$ were an issue.  

Guy in Las Vegas has one w/ RO-67 SE. Another awesome combination. 

Dub is gone to a contest someplace just about every weekend.   He'll catch up.

Dave

I have a R O Jett 61 side exhuast, cast case in Shark 45.  It is plenty of power even with the plane heavy at 74 oz.  If you run them like Dub and Richard say, it will last a long time.

Yea, Ty, flying in Pocatello was a challenge with a V-8 in a Lil' Wizard.

So we are saying that the OS .46 LA-S should fly the Shark 45.

So we are saying that the OS .46 LA-S should fly the Shark 45.

Hi David,

While the .46LA might "fly" the Shark, I believe yo will not be too pleased in anything less than ideal conditions, I would not go with anything less than a ST G.51 (preferably set up by Randy Smith!) or similar.  Unless you can vuild it very light, the .46LA could be a bit weak....

Bill

I have the option to power this by either the ST 51 (Italian mfg) or the ST 60 Stunt.

The LA .46 is at best a .40 in power output-sort of ignore the number.  The .51 would be best of your given choices.  The .60 would be great other than the vibration.  To stiffen the nose enough for it plus the extra fuel would make the airplane too nose heavy I believe.

Dave

Dave is absolutely correct.

I have a NEW IN BOX ST G.51 that was done by Tom Lay (T&L)....$190 plus insurance and USPS (about $20). Comes with a Scott Dinger muffler (I'll have to check on that!).    Steve

We flew our original Shark (around 1965) with a stock K&B Greenhead 45 and it flew very well.
The fellow who built it knew Lew McFarland and received one of the very first pre-production kits. He said that he was surprised at how light it was.

The best flying Shark I ever saw was powered by an OS Surpass 52.

It was at Brodak's a few years back. Flown I believe by Thomas Case.

   Bob Z.

Bob, I see Warren Boudrie a few times a year, hopefully I'll see him at the RAMS annual banquet in January. I'll ask him what he had in his original kit. I want to say it was a ST .46, I remember it cut really nice corners and I was always in awe of it as a kid.

Yes that is the early name of Eric's kits.

I listed a NIB Enya 50 with tongue muffler in the classified ads.

Dennis

thanks, Steve.  I am tapped out right now on engine funds.  Just picked up a new Enya .60III.  That may be the one I use.

Hi David,
I flew a 7033 in my ARF Strega and it flew great (AFAIC) The Enya is a vastly overlooked engine for stunt.

If yours isn't drilled for a muffler and has dimples in the exhaust, it can be drilled (As are the "New" ones) out and fitted with an OS 3030 or similar muffler.

Good luck and safe flying, Jerry

The Shark is a fairly large plane. I had one built from a kit "back in the day" with a Ueda 45. It was Monokoted and finished at 62 oz......I could never get a good stunt run out of the engine. It turned corners beautifully,but I sold the plane when I got involved with R/C stuff. At that time I thought about a larger engine for the Shark ,but never did it. Just my opinion but for today's flying an OS LA 46 might not be "enough"....although the LA 46 is a very fine running engine.

I'm back into "Stunt" and plan on building two Shark 45s this winter.One is an RSM kit,the other an original Jetco kit. I have a baffle pistoned early Enya 60 for one of them and a lite case ST 60 as well. My plan is to use the "heavier" engine in the plane that has a bias for "tail heaviness" and the lighter engine in the one with a bias toward nose heaviness. Both engines run well. Both planes will be Monokoted with target weights around 64oz. Have Fun ,PhillySkip