rsieminski

Mag .32, .36, TT .36? What kind of speed can one expect with a DD and one of these? I'd like to get over 130 mph. Is there a better one?

FlooredCOBRA

A Buddy of mine is using a O.S. .32 SX Non-Ringed w/ tuned pipe and says it really hauls.


http://www2.towerhobbies.com/cgi-bin...?&I=LC3593&P=1

Cactus.

My Feedback: (1)

Leo 37, on a MINI Rapier we got 145 average the other day, this was with the muffler! Dust should be about the same

jetsett

My Feedback: (6)

Definitely go with the O.S. .32 fx, put a pipe on it and go wild.

Cactus.

My Feedback: (1)

if you wanna go over 100 bucks, tho shouldnt be too much more, try the new West 36 from Weston UK, i've gotta replace the useless Magnum 36 in my Outlaw ( which is already fast ) and the West is what im getting.
Alot more grunt from this engine, tho for any other of my planes in the 36 range i'd get the Leo, £42 here currently, you just can't argue with that for the qualilty this engine has over the other Chinese efforts

woodduck-RCU

You did say under $100, I agree the OS 32 SX with a pipe is hot but it is about $180 altogether. Check out a Webra .35 Aero, the specs are equal to or greater than the OS 32 and it costs $99.95
I have a Diamond Dust with an OS 32 SX and pipe and I switched to the Webra with the same pipe and I think it is as fast or slightly faster than the OS 32

Craig-RCU

I thought that the Novarossi 09.20C http://www.planethobby.com/cgi-bin/m...rtNum=10010487 looked like it might be a good speed freak engine. I was considering it for use in a ducted fan, but never got around to that project. It's only a .21 but it is supposed to put out 1.87hp at 28.5k rpms at a weight of less than 10oz (not sure if that includes the muffler) http://www.novarossi.com/motori_ing/21/c20.html The 32sx is rated at 1.2 hp at 18k with a weight of 12.3 oz including muffler. I have no experience with the Novarossi though. Even if the hp ratings are accurate and the 32sx is less powerful, I have no complaints about the ease of use and reliability of my 32sx. The 32sx is definitly a good and powerful engine, but at $79.50 the Novarossi seems worth a look.

FlooredCOBRA

I think the OS will be much easier to tune and more reliable than the Novarossi.

I messed around with Novarossi engines in gas cars and they do work well and are high powered and fast. The only thing is they are finicky as heck. Not sure if the aircraft versions are the same but if so may not be an engine that you just throw a prop on and go for it as the OS.

But then again it may be the ticket. I am just going by the car engines and how they acted.

It may take some tunning to get all the power out of it. I know with my GRRT i cant just throw a prop on it and go for it. It took a a while before i found a good prop that worked and allowed the engine to get up on pipe. Any other props the engine would never get up on pipe and it ran like a regular sport engine. Once on pipe you can see what separates sport engines with higher powered and revving engines.

rsieminski

Allright, I'm getting the Leo .37. What type of speed can I expect with a DD?

Cactus.

My Feedback: (1)

A Mini Rapier and Dust are very comparable, so you should be in the 140ish range, tho you might wanna try a pipe as well, i found out, it was a 9x8.
It wasn't the E version, that £39 i believe, its the next one up, SF? theres a more expensive version with a MVVS carb and OS bits inside but thats just OTT
That guy now has 4 and when he gets the Spitfire Funfighter guess whats going in it.
Another mate has one coming in the post today, and i'm gonna have one in my Zero when i get round to finishing it.
MR 4 Leos uses Modeltecnics 5% fuel which as a slight amount of Castor, i use Prosynth 5% which is 100% synth. Oh yes, i tried a 12.75x3.25 ( or are the .00's the other way around? ) didn't rev that high, but loads of thrust, good for hanging, but i went back to the Master 11x3 for better overall flying

ewstap

I'm currently using a TT Pro 36 with mousse can muffler on an outlaw. Performs every bit as well as, if not better than an OS 32 at less than half the price (about $75) Turns an APC 8x8 at 18200 on the ground and unloads quite well in the air. Makes the Outlaw sound like an Indy car during a low fly-by! Havn't actually clocked the speed but seems very close to the 150 range. It should get a DD well over 130.

rsieminski

Well, I got the LEO .37, but the power doesn't seem to be there?

Just broken-in, so could get better, but with the stock muffler, I'm only getting around 15K with a MA 8x8? Seems kinda low to me. My .32 SX seems more powerful. It'll spin a 10x4 APC at 16.2, which should be more of a load. What should I expect?

FlooredCOBRA

maybe try using a pipe set up or a mini pipe.