well i know this question can be answered in many different ways but i am looking to find out witch nitro engine .21-.32 is the most powerful. the problem i am faced with is that all comanys rate output in different ways, same thing with magazines they all use diffent methods and dynos and no one mag has tested all the engines. so i figured id put yalls opinions to the test. what is the most powerful 21-.32 size nitro engine?

I too am asking myself this question, since there are so many on the market and there is little to defrenciate them based on the information given (most of it being elaborated by the manufacturer that it's difficult to find an unbiased point of view). And the information is fairly linear. Any insite on this would be great.

Here ya go!!

http://www.rcuniverse.com/forum/m_4782077/tm.htm

Thats great. Good searching but I do have a problem. Those numbers look kinda low for some engine's. For some engine's it looks like it's right on but then for others it looks like they did the dyno run then took away about a half HP.

But anyways dyno's really dont mean anything. It a number that way to many people come to realy on. It's just numbers and thats it. I mean it should be good on seeing what engine is more powereful then another because they did it all on the same dyno. (I'm going off of your words on that)

But some numbers look to low for my likings though. Anyways I would go with the O.S 30VG, as they tend to be great engine with a ton of power. But thats just my opinion.

In this case a dyno run DO mean something as all data is taken on the same dyno. The numbers are relative so it's a fair comparison.

I did already say that. But as in the numbers it means nothing. It is good for comparison, but thats about it. other then comparison it's not worth a dime, or a chewed piece of gum. Remember that dyno's are run in a room thats has the best ambient temps among other things. It does not show any chart, to look at and compare from that point. Remember that engine are much more then just numbers and if you make your decision sololy based on just nembers then you could be in for a rude awakening.

Thats just a thought.

I too would like to see the torque/hp curves but besides that what more can you ask for? Measured numbers are measured numbers and it's a good thing all engines were ran at the same ambient conditions.

Stock or modded?

well from that dyno you have 2 choices, the o.s .30 or the surefire .32.....but all i know is that if the o.s .30m had that much power over any other engine they would be all over the place......ive had th9is question in my mind for some time now,and i just bought the biggset one i could find..

The numbers seem off for some engine. Look at the mach .15 rear exhaust. Thats rated at 0.65 hp. Then the O.S .12 TZ t3 is only cranking out 0.80 hp. Come on tell me that, that's true. The numbers for the mach .15 look very realistic but the TZ is way off. And the O.S .18TZ is only cranking out 1.18hp. There's something seriously wrong with some of those numbers.

There numbers are off, thats what I'm saying. Yes it good for comparison but with numbers like that even I dont think that I would trust those camparison's if it's any indication of what there numbers are. A dyno can only tell you numbers, and show you a power curve.

Quicke story. In another form of racing a gu I know had 3 engine's dynoed on the same dyno. 2 of the engine came out with some awesome numbers for there size (the size was 250 4 stroke). The 3rd engine the guy who dynoed it said he should pitch it in the garbage can as it didnt put up any numbers of an engine that is worthy of being called a racing engine. The guy took them home placed the highest hp and torque numberd engine in the car placed the 2nd engine in the trailer and left the third at home. After everal weeks of doing nothing in racing with the two higher numbered engines the guy decided it was worth a shot to try the 3rd very underpowered engine. After he put that 3rd engine in he then started be able to finish up high. Beacause he went off of the dyno it cost him the championship.

Thats what I am trying to get at. The dyno is not set is stone by anyway, so you should start making less decision on dyno numbers and see what the engine can do on the track before you make your decision. Thats my opinion

Manufacturer's dyno numbers are overexagerated. 1 HP is a heck of a lot of power.

I realize that some manufactures exagerate there numbers. Believe me I do. But a mach .15 doesnt make any where near the same hp that the .12tz does yet they almost have the same numbers. Believe me I know that 1hp is a heck of a lot of power. Especially for these engine's. But these numbers dont make any sense with some of these engine's.

A MACH .15 rated here at 0.65 hp doesnt even come near the power of a .12tz t3 which is rated ahere at .80 hp. If you have ever owned a mach.15 you know how much power they really have. If you then have a .12tz t3 you know how much power it really has. And they dont come close. The .12 cvr is more powerful then the MACH .15 even though they dont have it rated here it would have to fall bellow the MACH .15 in power. You can definately tell the power difference between the .12 CVR the .12 TZ T3 and the MACH .15. There are huge power differences between them. There numbers for some engine seem right. But for others it's seems really off.

I agree there are a ton of variables ie., temp, humidity, elevation and so on but do believe this is a good all-around comparison.
I have been running a Axial .28 and read all I could on it and one thing that I read in a couple of places is that it actually builds it’s top HP after about 3 gallons of fuel. So a new motor could not be making top HP for a while if that is true for most or all engines.
Another note is break in. I could only assume but I believe this would be a major factor on HP.

Ca

Should try the RB .23 323 has 3.78cc hauls ass and has awsome top end and low end...this motor kick as back yard bashing and jumps...is kick ass climber specialy on the sand....

Should try the RB .23 323 has 3.78cc hauls ass and has awsome top end and low end...this motor kick as back yard bashing and jumps...is kick ass climber specialy on the sand....