Which motor is a good fit for this???

[Gregg Elko]

OK, I've gotten a lot of good info here so I'll ask again. I've ordered a Twister and have a O.S .25 C/L (brand new) and a new .46 O.S. La R/C version on the way as well, which one of these is the best candidate for this Twister? I plan on doing the published mods to the Twister when I build it.
If you all recommend the .46 LA for this I will need to ask where can I get the parts and or part #'s to convert this to a C/L version? 

Again thanks for all the help, very much appreciated, really.

Gregg

[Balsa Butcher]

Greg, go with the LA 46 then please do a search on this subject first. Your question has been answered many times in this and the other forum. Check the engine section as well. Lots of info, some contradictory, including part#s and suppliers. By the way, good choice of airplane. 

[Dick Pacini]

Gregg, why did you order the RC version?  Private or ebay sale perhaps?

[Gregg Elko]

Good price on a new in box and I can convert cheaper than buying the C/L version of the same thing. Just trying to save a buck....

[Tim Wescott]

Quite a few folks convert to CL by wiring the throttle open, which saves you a few more bucks.

[Gregg Elko]

I can do that, just thought someone knows where and which one to purchase, as in the venturi and needle valve set up. Just trying to cut down my search time to spend more time building it. Someone has done this work already, right?

Gregg

[Rod Claus]

Gregg,
Out here in the Northwest we use a .272 venturi from Jim Lee and a .156 needle from Randy Smith along with an APC 12.25X3.75 prop and
a tongue muffler available from Randy,Brodak,Scott Reise.Use muffler pressure also for a steady run.No other mods are necessary.
I flew a 57oz. Orenrial Plus with this combo last weekend at the Portland contest and my arm is still sore.
We launch at about 9550 rpm along with Wildcat 10/18(80% synthetic/20%castor) fuel and all is well.You will really like this combo.
Do the Fancherized mods and you will have a great stunt profile.
Hope this helps and enjoy.
Rod

[Garf]

Order from Tower Hobbies. The venturi is from the 25, which is what a lot of people end up with.

[Mark Scarborough]

I second what Rod said. I have flown a fair number of planes with an LA 46. I use a .272 venturi ( typically found on an OS 25) a ST needle valve assembly, or the randy smith version which is superior for a lot of reasons. The needle is fairly important as the OS needle is thinner than the ST or Randy smith version. It will give a larger choke area and the engine will not perform quite the same. Scott Riesse is a source for venturis as is Tower. I normally find my 46 to want to be set around 9800 rpm on the ground, but then I use 10 -22 fuel, ( 50 castor 50 synth) and the 12.25 x 3.75 APC prop. Make sure you make longer gear for the twister, not sure the stock ones will allow the prop, and trust me, the prop is really part of the whole setup that makes the LA so well behaved.

[PJ Rowland]

" please do a search on this subject first. Your question has been answered many times in this and the other forum."

I do agree with this first statement in part....... Searching old archives is one way of getting good information and relivant and can also speed up the process - you will be reading threads, more than waiting for replies.

HOWEVER;

Just remember guys, for people who are new to the sport, or new to the forum, and based on what Greg has said he's relatively new to both - Sometimes the online social aspect of getting on a forum, talking with fellow modellers about your project can be encouraging and a worthwhile excersise.
You wont get this from "Searching" online - answered questions yes, social interaction ? no.

And sometimes its difficult to "chime in" on a thread without a plethora of experience yet you want to feel part of the community.


So keep that in mind ,some guys come on here to interact digitally-socially - without going to facebook, a place where they feel welcome - so I dont mind answering a few questions.

You could also try to pick yourself up a nice more modern style engine like a PA .40 or Something like that , easy to setup easy to run.

The LA 46 is also easy to run/setup.

[Derek Barry]

OK, I've gotten a lot of good info here so I'll ask again. I've ordered a Twister and have a O.S .25 C/L (brand new) and a new .46 O.S. La R/C version on the way as well, which one of these is the best candidate for this Twister? I plan on doing the published mods to the Twister when I build it.
If you all recommend the .46 LA for this I will need to ask where can I get the parts and or part #'s to convert this to a C/L version? 

Again thanks for all the help, very much appreciated, really.

Gregg

If you are going to keep it stock and you are able to built it light, I would suggest the .25. If you are looking to modify it I would take a look at the "Fancherized Twister" and maybe the .46. The .46 is more than enough power for such a small plane. 

[Perry Rose]

Definetely go with the LA .46. It has the same bolt pattern as the LA .40 and a few others so interchangeability is opened up. In addition to the Fancher mods put in half ribs or mold a leading edge for the wing. Install the molded leading edge after glueing the wing into the fuselage so you wont have to open up the wing cutout in the fuselage. Add cap strips too. Discard the stab/elev. and build one from sticks that has the wing plan form and is 22 inches in span and 3/8 inch thick. That is the second most important mod after the stretched fuselage. As far as a fuel tank goes use one from the ARF Nobler. It's compact and is labeled 180 cc but holds a bit less, still more than enough to do the pattern. They are available from Tower Hobbies.  I modified one with the standard wing with half ribs and the larger stab. 3/8" thick and it flys much better than the standard wing and stab. set up. I scratch built another one with the molded leading edge, cap strips, 1/2" thick stab, 3 or 4" longer wing, wing tips, Primary Force landing gear and drilled for the LA .40/.46 I built it up to ARF condition and shipped it to Louisiana and I plan to assemble and fly it next week.

[Steve Helmick]

I have a .25LA-S in a SIG Skyray (38 oz...too much!) and a Magnum XLS .36 in a F-Twister (48 oz, also too much), and would vote most enthusiastically for the .46. If you can bring a Twister in at 28 oz, then the .25 would be ok. That's not going to come from a kit, and unless you're already a good flier, it will gain weight as it "ages". Don't try to do any lomcevoc's with it. Twisters are well known to not recover from that maneuver!  Steve

PS: Actually, I looked at your "profile" to see if your location was available. Some folks out West live at such high altitude that the .25 powered approach simply isn't appropriate. 

[Dwayne]

My Twister weighs 38 oz. and has a LA .25 turning a 10X5, I launch at 8,800 with 60 foot lines and it is perfect. I know there's no substitute for horse power but a .46 on a 480 sq. in. model? Seems like over kill to me.  

[Randy Powell]

Heck, I'm using a .65 on a 600 square inch plane. I think Jim Aron is using a .75 in a 585 square inch plane. In the words of Don Garlits, there is no substitute for cubic inches.   

[PJ Rowland]

Whats the nobler ? 510 ?