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Engine basics => Engine set up tips => Topic started by: Robin_Holden on November 04, 2009, 12:12:50 PM
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Greetings all from a damp Charente in S.W.France.
So.... Which are the best 'stock' , i.e Un-Modified , Engines for stunt ?
My favourites are the O.S 46LA , the Thunder Tiger Pro 36 and the Magnum 36. All I've done to convert these engines from R/C is add the appropriate venturi , NVA and the odd head shim.
So guys ..... What are your favourites ?
Keep fit ,
Robin [ ex-pat Brit in the Charente full of ex-pat Brits ]
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For a piped engine, The OS VF series comes to mind, as well as Randy's PA, and Richard's RO engines.
For 4 2 4 runs with current engines under $150.00, Enyas, OS .46, Magnum .36, and TT .42.
For the same kind of run, but costing over $150.00, The Stalker line of stunt engines, Randy's PA engines on a muffler, Richards also on a muffler. H^^
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I like the Brodak 40s, LA 46, and Randy's PA line of engines, based on my experience
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Although they require an intake mod the Saito 30,40,56 & 62 are my favorites. Can be picked up for ~$150.00 new or low time if you watch the RC forums.
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Let's not forget the BBTU OS FP.20 steadily available on Ebay - either the 'S' version or get an R/C & install a
regular venturi & needle valve (both available from Tower Hobbies) ......JMHO
Geno
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ST 46
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Well you can't beat the B40 in my book. Unless you can't get one!
I have flown two, one in a Nobler, and the other in a Brodak P40 Arf, and in both cases, the engine provided plenty of power with no big effort on my part.
For the price it is a very good deal. But like I said, I am not sure if you can get one anymore.
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Well you can't beat the B40 in my book. Unless you can't get one!
I have flown two, one in a Nobler, and the other in a Brodak P40 Arf, and in both cases, the engine provided plenty of power with no big effort on my part.
For the price it is a very good deal. But like I said, I am not sure if you can get one anymore.
you can check ebay, as some guys sell the 40s brand new. I heard John was going to get the motors made from somebody else, but really don't have a clue beyond that. I would love it if Brodak came out with a 60 rear exhaust, basically an ST 60 RE, that would be cool
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All the Enya engines I have tried worked amazingly well out of the box with no modification. Enya 19V, SS30, SS40, 45 6001BB , SS50 and 61CX
Very powerfull and friendly.
Martin
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I personally think the PA's are the worlds best stock 2 stroke stunt motors. I also feel that the Saito's are the worlds best 4 stroke stunt motors.
If you had me in a headlock and everything was getting dim pretty fast, I would possibly blurt out ST 46 as the best all time stock stunt motor.
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Milton,
Consider yourself in a headlock !!
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Another real good motor could be the ST 60, which couldbe why that motor has won so many Nats.
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ST 46
Ditto
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Greetings all from a damp Charente in S.W.France.
So.... Which are the best 'stock' , i.e Un-Modified , Engines for stunt ?
If you limit yourself to stock "consumer" motors (i.e. large production runs from a major manufacturer and available easily), it's a no-brainer - OS40VF. Runs dead-stock, setup is perfectly well-defined and repeatable, performance a match for just about anything in the typical 40-60 sized airplane. It's still the best place to start with piped engines since the setup is bulletproof even if you don't know what you are doing
Semi-customs (PA, RO-Jett, Retro, Rustler, etc) - I obviously prefer the RO-Jett 61BSE. I can run anything I want and have access to anything I want or might decide to ask for, and that's my choice. I run mine essentially stock, never had either the 2006 NATs motor or the current engine apart or even had the head off. The only thing I have seen that seems a match overall is the David version of the PA75. For 4-2 break motors, the only thing in the ballpark is the Retro 60. It's like an ST60 that runs the way it was claimed to run but never did.
I have fond memories of other engines like the Fox 35 and the ST46, but there's no way they stand up against any of the others from any objective standard. An Aero-tiger 36 is FAR better than either one, and is better than anything else you can get in that size as a 4-2 break motor.
If you don't mind building a small airplane, the 20FP runs as well as any of the others. It's obviously not going to make it in a 40-60 sized airplane, but almost anything that flew well with a Fox will fly better with a 20FP and, once again, the setup is dead simple (do ABSOLUTELY NOTHING aside from bolting it in) and dead repeatable.
Brett
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I have found that my OS Max-s 35, 40FP & LA and my 46LA run great. I've also recently purchased a GMS 25 and a GMS 32 and they run at least as well as any of my OS Max's. Three club members have purchased GMS 25's and all three started first flip out of the box! All of us are happy with their performance too. It is an RC BB engine but we've just locked the throttles wide open with the lock screw on the carb. They're a bit heavy because of the BB but they make a lot of power for their size. I paid about $50 for the 32 from Tower on sale.
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Anderson Spitfires, Orwicks, and Super Cyclone's. y1
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The venerable Fox .35 Stunt is still as good as it gets when properly broken in and used as it was intended. The Fox has many virtues that far out weigh any of its 'faults'. H^^
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If you are into running the pipe set-up, the stock TT .36 (square head) runs great on a Randy small 40 pipe!
BTW, I don't think I ever saw a "stock" ST .60!
W.
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Best stock stock engine and the best stunt engine of any kind that I have ever had is my RoJett 76. The only thing not stock is the venturi has been drilled out to about .206
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In my opinion, if you're going to go into high end competition with two-strokes, Randy Smith's engines are absolutely the best. I have seen many of them run, both the PAs and Aero Tigers and just just seem to perform flawlessly.
If you're into the more classic powerplants for your Nobler, Thunderbird, Ares, Argus and so forth, it's hard to beat the good old Fox 35 and Max-S 35 - completely stock
There are also two outstanding foreign engines that I do not recall being mentioned: The Super Tiger plain bearing baffle piston 35 and the Merco red head 35. Both of these engines are excellent when run stock.
Of course, there are the four-strokes: Again, here's my opinion: The three most important things to rememebr when choosing a four stroke are: SAITO, SAITO, SAITO! Any size - I've run/flown every one from the 30 up to the 91 and they're all great.
Bob Z.
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PA 61, Merlin 40, Aero Tiger 36, OS 20FP-BBTU, ST G51, and the Magnum 36 XLSIIA. These are the currently available engines that I believe from use, and seeing others, to be the very best STUNT engines available. I have not dealt with the PA 75, but the PA 40 and PA 51 are also excellent. These are engines that are pretty much plug and play. The 46LA and 25LA are OK for knock around usage like in Profile. ;D
Of the *old engines*, the McCoy 40 RH, OS 40VF, ST 46, OS 35S, Veco 35, Merco 35 RH, Fox 35, and plain bearing ST 35 baffle piston are my favorites.
Mongo
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The Magum GP 42 is still available from Towers at a knock down price. OK you need a venturi and NVA, so the price is comparable to an LA46. I have two and they run much better than the LA46 and in my estimate they are more powerful. You get a far better engineered product that will outlast an LA46. The GP42 is a real wolf in sheep's clothing and only a few people realise this. My thanks to those people for having discovered it!
The red head (or better still the orange head) Merco 35 and 29. The Mk1 Merco 60 with the light case is also an excellent engine. The ST 60 is a knock off of the original Merco 60!
A friend of mine raves about the Merco 60 with the ABC liner. This is a Rustler product and uses the later old Merco crankcase. Its both very inexpensive and good! (Don't confuse this with the more expensive Rustler offering). Must get one of these before they are sold out!
Regards,
Andrew.
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The three most important things to remember when choosing a four stroke are: SAITO, SAITO, SAITO! Bob Z.
That's Right!!! y1