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trx 3.3 or O.S. .18tm

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Old 05-05-2007, 04:58 PM
  #26  
rcdudegermy10
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Default RE: trx 3.3 or O.S. .18tm

yea, you're right the trx 3.3 is faster to break down...and faster to not start when you want it to
Old 05-05-2007, 08:03 PM
  #27  
dcross405
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Default RE: trx 3.3 or O.S. .18tm

if the torque is about the same and hp are close just look at the rpm. Because if one engine will rev to 32,000 rpm it will be slower in the longer stretches than an engine that will turn 36,000 rpm. HP and torque help you get to top end but your actual top end is all about rpm and gearing. So no .30 that i have ever read about will keep up with an 18 or the 3.3 in the long run because it can't turn as many rpm as the smaller engines can. Not to mention with a little less power and geared properly you will smoke a huge power plant because you can use the throttle more and not worry about flipping as much. Plus racing and busting diff's with a BB: Price of diff's and other varios parts, Racing and smoking a BB with a SB because you actually finish the race without any broken parts: PRICELESS... LOL......
Old 05-05-2007, 08:52 PM
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jarett 92
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Default RE: trx 3.3 or O.S. .18tm

like people said before...honestly, as im sure alot of people would, i would racrifice a little bit of power for an engine that barely needs tuned, an engine that the temps are perfect. And i bet u can barely notice the differnces in power.
Old 05-05-2007, 11:26 PM
  #29  
LSTVega28
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Default RE: trx 3.3 or O.S. .18tm

ORIGINAL: traxxas_man_05

the 3.3 is faster than the o.s come on guys think about it, the o.s is smaller in cu. in. its not as fast as the 3.3. Yea it might have more torq but not faster in the long run.
Don't even get me started. And man, you have a thick skull! Also, I have ran with a equally modded revo with a O.S 18TM. The TM is faster on the low-end, I didn't notice the top-end because we were on a tight track.
Old 05-06-2007, 10:58 AM
  #30  
BRUSHLESS BASHER
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Default RE: trx 3.3 or O.S. .18tm

dcross, the LRP .28 revs to about 43,000 RPMs and has way more power, and if you gear a bog block right it won't need high RPMs, because it will spin the wheels way faster at a lower RPM due to low gearing and enourmous amounts of tourque. and as far as flipping, if the gears are tall it will have more accelleration and speed than any small block, even you mentioned proper gearing, but obviously didn't think about the fact that you can do that to a BB to. Traxxas Man, your WRONG though I wouldn't go to a smaller motor, but, an OS .12tz has more power than alot of .15 engines, though the OS costs 3 times as much. and yes, an .18tm makes more power than a 3.3, it's a better engine, just like how some little .12s can smoke RTR .15s, the OS .18 can smoke this RTR .20.

Basically BB are better and some slightly smaller engines can make more power than a slightly larger engine.
Old 05-06-2007, 11:05 AM
  #31  
BRUSHLESS BASHER
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Default RE: trx 3.3 or O.S. .18tm

Revo Vega, I can get an STS D30M engine, the matching STS pipe, and the New Era engine mount, AND some taller gears for about 230-240; ant that makes probably 2-3 times the power of the little OS, and not too much more expensive.
Old 05-06-2007, 11:36 AM
  #32  
Freezetron
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Default RE: trx 3.3 or O.S. .18tm

Brush, fine do whatever man but stop the troll/flame baiting.
Old 05-06-2007, 11:39 AM
  #33  
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Default RE: trx 3.3 or O.S. .18tm

I am not trolling or trying to start a flame war just correct some of the misinformation.
Old 05-06-2007, 12:02 PM
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Freezetron
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Default RE: trx 3.3 or O.S. .18tm

K sorry, i have a bit of a hangover right now...
Old 05-06-2007, 12:34 PM
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Default RE: trx 3.3 or O.S. .18tm


ORIGINAL: BRUSHLESS BASHER

I am not trolling or trying to start a flame war just correct some of the misinformation.
Well 230-240 is almost 100 dollars more than a O.S and it the O.S is less of a hassle to put in. Or you can get a picco like me for 180 and have just as much power as a true BB.
Old 05-06-2007, 01:42 PM
  #36  
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Default RE: trx 3.3 or O.S. .18tm

no how about revovega dont get me started like i said the os is smaller in cubic inches so that means its slower! it might have more torq but not more power, your just making yourself sound stupider and stupider so stop talking lol.
Old 05-06-2007, 02:10 PM
  #37  
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Default RE: trx 3.3 or O.S. .18tm

The picco .26 has nowhere near the the power of an STS D30M, especially with a pipe specifically designed for the engine.

And traxxas man I don't know how to get it through your head, Just because it is smaller doesn't mean it has less power. Ferrari had 4-liter engines making 400+ horsepower, while many larger engines had a harder time making those numbers. Read up on how engines work dude, especially these model engines.
Old 05-06-2007, 02:41 PM
  #38  
jgeck90
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Default RE: trx 3.3 or O.S. .18tm

i dont need to, I have a revo 3.3 my uncles co-worker has a revo 2.5 with o.s .18 in it, i'm tellin you guys yes it has more torq, man that thing can climb but there is absolutely not any more power to it than the trx 3.3
Old 05-06-2007, 08:08 PM
  #39  
dcross405
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Default RE: trx 3.3 or O.S. .18tm

Well how much does that .30 cost that you say turns 43,000 rpm? And why not just mod a smaller engine to get more power and way more rpm's?
Old 05-06-2007, 09:38 PM
  #40  
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Default RE: trx 3.3 or O.S. .18tm

Why not just mod a big block to get 10 times the power and possibly more RPMs, and the 43,000 RPM motor is a .28, here's the link: [link=http://tower link]http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXKYU8&P=ML[/link].

And though it says 33,000 I believe it was Xtreme RC? (Idon't get it) that dyno'd it at like 3.5 horsepower, dont remember the torque, but they got it to 43,000 before letting off the throttle for fear of over-revving. and it still has enough bottom-end power to gear tall and fly by any small block, besides, RPMs only help on the top end. for accelleration you need the power of a BB or short gears, making it slower. You CAN'T beat a proper BB race engine with a SB no- matter the size or the RPMs or the Power.
Old 05-06-2007, 09:52 PM
  #41  
dcross405
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Default RE: trx 3.3 or O.S. .18tm

ok i will give you that one. That is an exceptionable engine and i would run that engine if i had a truck to put it in. But with that engine your gonna be putting in a TON of money to upgrade tranny, diffs and every other driveline component in the truck.
Old 05-07-2007, 08:47 AM
  #42  
J_Bone
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Default RE: trx 3.3 or O.S. .18tm

I think some of you guys are missing another aspect of the engine. It's the power band range that the engine will actually have the most power and move the mass the best. It's called "Power Band". EXtreme RC did a Nitro lesson for this a while back and was really good information.
Just because the 3.3 has 43,000RPM's, it only makes it's best power at 23,000-30,000 (not actual, just an estimate range)RPM's. Meaning it has a Mid range power band. Now compare it to a LRP .12 that had 48,000 RPM and actually had more HP than the TRX 3.3. But it doesn't have enough torque to more a Revo and it's power band is in the higher range so it will take longer to reach the power band and be left behind by the TRX 3.3. So HP numbers and RPM's can be mis-leading.
The OS .18 is very close to the TRX 3.3 and the main reason I run it is because of OS reliability and tune-ability over the TRX.

There is a reason why they have Big Block and stock MT classes at my race track. BB are faster when geared correctly.

Old 05-07-2007, 11:45 AM
  #43  
slayerphonics
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Default RE: trx 3.3 or O.S. .18tm

See corporations will have you belive that there product gets bad reviews cause so much of there product is out there.. but thats total crap. its an excuse for a poorly made product that they make as cheap as possible so they can mass produce crap then just say its cause they have so many out there...


DON"T BELIVE THE LIES

OS has alot of motors out there.. when they have problems they fix them not making lame excuses

DEATH TO TRAXXAS MOTORS... I love there trucks though
ORIGINAL: ttoks

the os is about as powerful as a 3.3, so you wont see any difference there, mainly with it's tune holding, it's a lot easier to tune then a 3.3, you will find people who say the 3.3 is lower quality because there are so many complaints against them but there are so many 3.3 engines out there it's not funny, if theres a LOT of a type of engine there will be a lot more complaints, doesn't mean the engine isn't any good.
Old 05-07-2007, 11:51 AM
  #44  
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Default RE: trx 3.3 or O.S. .18tm

Everytime a TRX engine dies, a fairy is born and the world becomes a little more beautiful
That's one of the funniest sig's I've seen!! Thanks to IceWindius.
Old 05-07-2007, 07:44 PM
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Freezetron
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Default RE: trx 3.3 or O.S. .18tm


ORIGINAL: J_Bone

Everytime a TRX engine dies, a fairy is born and the world becomes a little more beautiful
That's one of the funniest sig's I've seen!! Thanks to IceWindius.
I speak nothing but the truth
Old 05-08-2007, 09:38 PM
  #46  
maxxedout420
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Default RE: trx 3.3 or O.S. .18tm

Can i take the pull start from my trx 2.5 and put it on the os .18 tm with the owb. or how does that work, do i need to buy a diff one.
Old 05-09-2007, 12:07 AM
  #47  
thespian4
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Default RE: trx 3.3 or O.S. .18tm

it will bolt right in.
Old 05-12-2007, 09:56 PM
  #48  
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Default RE: trx 3.3 or O.S. .18tm

go with the os. the trx 3.3 sucks.Believe me I had one sold it and now have a picco .26.The picco is great.The trx 3.3 overheats needs to have the needles continuosly adjusted and just plain sucks.It has enough power to do the job but takes away the fun when you have to play with the needles all the time and the damn thing won't run unless you lean it out and then the temps skyrocket.I have had os engines and they hold a tune and are realiable the picco holds a tune and makes way way more power do yourself a favor and dont get a trx engine.
Old 05-12-2007, 10:26 PM
  #49  
LSTVega28
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Default RE: trx 3.3 or O.S. .18tm

ORIGINAL: traxxas_man_05

no how about revovega dont get me started like i said the os is smaller in cubic inches so that means its slower! it might have more torq but not more power, your just making yourself sound stupider and stupider so stop talking lol.
Wow, are you literally 12 years old? Just because the 3.3 is bigger in cubic inches dosent mean it's faster than the O.S 18TM. I have ran with a O.S 18TM on a southern california track(ARC Racing) and the TM was torquier than mine, and yes mine was tuned for performance that day. It wasn't that big of a differnce on the top-end, I am still debating whether to get the picco or TM, I like the reliablity of the TM and power of a picco........ I am more of a basher.
Old 05-12-2007, 10:27 PM
  #50  
Freezetron
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Default RE: trx 3.3 or O.S. .18tm

Hey Vega, I may be selling my Revo and buying a Baja 5b, you want dibs if I decide to do it? Only 1 gallon through it.


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