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OS 18 TM Vs RB TM523

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Old 07-24-2006, 07:28 PM
  #1  
grunho
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Default OS 18 TM Vs RB TM523

Please somebody help me with this decision. What engine should i buy the popular yet smaller engine (18TM) or the big orange machine. by the way i have a 2.5R on my revo which i want to pass it to a smaller touring shaft (4WD) driven car powered by a factory 2.5 engine that i thing its a crap (i buy it when i was a real newbie is the hobby, its the megatech razor xt race editon or something). But the main doubt its which engine its better for my Revo the blue one or the orange.
Old 07-27-2006, 05:56 PM
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raceguy13
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Default RE: OS 18 TM Vs RB TM523

Go OS all the way. The Rb has tons of power, but the customer service is the worst. I have two buddies that have had problems with their tm323 motors and RB wouldnt do a thing to help them. One of the motors was obviouslym was a casting problem as the mounting ear broke off right on the parting line. The OS has lots of power, way better than the 2.5, and way more reliable.
Old 07-27-2006, 07:09 PM
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rawkfist2
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Default RE: OS 18 TM Vs RB TM523

The big orange machine.
Old 07-27-2006, 08:56 PM
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james21291
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Default RE: OS 18 TM Vs RB TM523

def get the rb 523 os may have better support but the rb 523 will just demolish the os .18
Old 07-27-2006, 10:33 PM
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R/C Madman
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Default RE: OS 18 TM Vs RB TM523

There is not much difference between the 2 in power or speed. The RB has an edge in the power department and with the same gearing they top out at almost the same speed so no difference there. The OS holds a tune 10x better then the RB and the less trouble the better in my book. They are both good engines but, I would go with the OS if I had to replace it. I have yet to get my hands on a Picco .26 Maxx but, I have red great things about it and I have seen it run. It would have to be the top dog of the "drop-in's".
Old 08-01-2006, 05:24 PM
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bennyblanco
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Default RE: OS 18 TM Vs RB TM523

i have to friends one with the os .18 and the other with the rb .23 and the os. is not even close so i dont know how you can say they almost the same!!! go rb if you want speed!!!!
Old 08-01-2006, 06:54 PM
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R/C Madman
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Default RE: OS 18 TM Vs RB TM523

I have them both and just as I said above. The RB has an edge on the bottom end but, the OS has great mid and top. The biggest thing to consider is how well it holds a tune and hands down the OS wins. If your friends OS is not even close to the RB he had better check his tune.
Old 08-02-2006, 12:09 AM
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bennyblanco
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Default RE: OS 18 TM Vs RB TM523

they both work at the lhs tuning cars!!!!
Old 08-02-2006, 01:29 AM
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Dil
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Default RE: OS 18 TM Vs RB TM523

well my o.s destroyed my gear box yesterday, 2 gear wheels stripped inside, too bad for me, anyway whats the best fix for the gear box in my t-maxx, is it the forward only?? or is there anyother thing that could work??
Old 08-02-2006, 02:10 AM
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jgeck90
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Default RE: OS 18 TM Vs RB TM523

get the RBTM 928 !!!!!!!!!!!!! yes yes RB is comming out with a 928 which is a .28 !
Old 08-02-2006, 07:40 AM
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mobster
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Default RE: OS 18 TM Vs RB TM523

is that rb 928 going to be a drop in for the revo?
Old 08-02-2006, 08:25 AM
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Default RE: OS 18 TM Vs RB TM523

...
Old 08-02-2006, 08:56 AM
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Default RE: OS 18 TM Vs RB TM523

that engine has been out already for a long time. but what i want to know is will it be faster than the 523 in a revo. will it give faster top end speeds? i am only looking for more top end speed
Old 08-02-2006, 11:32 AM
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Default RE: OS 18 TM Vs RB TM523

get yourself a picco .26 maxx....it's a BEAST
Old 08-02-2006, 12:53 PM
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mobster
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Default RE: OS 18 TM Vs RB TM523

my 2 freinds had one already, and i beat them all the time in dragging with my 523, and they had theres tuned to the max.
so i need something faster than the rb 523??
Old 08-03-2006, 10:37 PM
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Default RE: OS 18 TM Vs RB TM523

How does it stack up to the Sirio .23? I have one and totally blows away TM's...not even close. I beat pretty much anything that I race with the latest being a 2-speed buggy with a Axium .32 which was pretty fast, but I past him and was still pulling away as we crossed the line. I want it faster. I have a Picco .28 in a buggy that I heard would run great in the Revo. I have the New Era engine mount also. I want it crazy fast. I am running a 36/15 gearing now. Would hate to make my tranny spaghetti, but I have a need for speed. How fast can a Revo be made to go?
Old 12-30-2006, 04:06 AM
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Default RE: OS 18 TM Vs RB TM523

i think the RB
Old 12-30-2006, 09:03 AM
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Default RE: OS 18 TM Vs RB TM523

For the price of the RB 523 you can get a Picco Naxx 26 with a stage II port and polish and whip a 523 ot OS18 any day.
Old 12-30-2006, 10:42 PM
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Uglysteve
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Default RE: OS 18 TM Vs RB TM523

I would go with the RB given the two choices. Although, you will be happy with either.
Old 12-31-2006, 09:26 AM
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grunho
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Default RE: OS 18 TM Vs RB TM523

Thanks for all the opinions i´ve make my mind and i´ll go to the RB cause i kind of didn't find any OS (lol) But it wont be soon cause while the Little and powerless blue original engine was working i kind of blew the whole thing to pieces my fault tough cause i didn't notice that was a Semi Truck passing by , so as i turn quickly to avoid the truck i just smash the Revo against a wall at full throttle...the chassis bent, the engine kind of jump of, the back wheels were...somewhere in the range of 10m, the suspension arms broke, the suspensions them self where ok(the front ones at least the back ones were completely ruined), front rims completely smashed, the back one (just found one ) was ok (i knew i should had glued ALL the rims to the tires) but the rest was kind of smashed like the fuel tank broken in 2 lucky didn't started a fire with all the nitro spread in the ground, and there i was completely frozen looking to my destroyed Revo at distance, and thinking of an excuse to tell my dad how i left home with the car and just came back with the radio and some pieces.
Old 01-10-2007, 09:57 PM
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arbcj
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Default RE: OS 18 TM Vs RB TM523


ORIGINAL: leejax02

How does it stack up to the Sirio .23? I have one and totally blows away TM's...not even close. I beat pretty much anything that I race with the latest being a 2-speed buggy with a Axium .32 which was pretty fast, but I past him and was still pulling away as we crossed the line. I want it faster. I have a Picco .28 in a buggy that I heard would run great in the Revo. I have the New Era engine mount also. I want it crazy fast. I am running a 36/15 gearing now. Would hate to make my tranny spaghetti, but I have a need for speed. How fast can a Revo be made to go?
probably about identical. the tm series rb's are made by star motor, which is sirio.
Old 01-10-2007, 11:16 PM
  #22  
NITRO FUMES RULE
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Default RE: OS 18 TM Vs RB TM523


ORIGINAL: R/C Madman

There is not much difference between the 2 in power or speed. The RB has an edge in the power department and with the same gearing they top out at almost the same speed so no difference there. The OS holds a tune 10x better then the RB and the less trouble the better in my book. They are both good engines but, I would go with the OS if I had to replace it. I have yet to get my hands on a Picco .26 Maxx but, I have red great things about it and I have seen it run. It would have to be the top dog of the "drop-in's".

I think what a lot of guys are missing here is that a larger displacement engine will
pull taller gears. As geared stock the OS and RB powerplants may be close to the
same in top speed. The RB can pull larger tooth clutch bells/smaller spur gears
which equates to higher top speeds even though the OS engine will turn more rpm's.

If you are not smelling nitro fumes and listening to the sweet song your not LIVING !!
Old 01-11-2007, 10:17 AM
  #23  
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Default RE: OS 18 TM Vs RB TM523

because ur main question is blue or orange......i like blue

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