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View Full Version : which motor for the revo 3.3


leroyjr1
08-16-2006, 08:03 PM
I have the revo 3.3 with some mods and i am looking at replacing the 3.3 .What are your thoughts between .26 picco, .23 sirio, os .21 vz-b, or the novarossi 528. What would i have to beef up. I would like to go with the novarossi or sirio. Are those two motors hard to put into the 3.3

ericem
08-16-2006, 08:15 PM
Well i believe u need to get big block motor mounts and mods ,i hear the diff blow easily with big block engines, and the spur will get chewed up. But i head the .23 is a bolt up engine.

Quinton
08-16-2006, 08:51 PM
Welcome Leroyjr1!!!
I don't think the Revo diffs blow easily, but you will need a big block motor mount.

Have you thought about the LRP .28? I've heard it's a RIPPER

DarkSavage
08-17-2006, 12:34 AM
But quinton dont you need a starter box with the bigblock engine because i heard the pullstart hits the arm.

Quinton
08-17-2006, 05:29 AM
I don't know - good point!

ericem
08-17-2006, 11:00 AM
Ya but they do have starter boxes though.

JoeMAXX
08-17-2006, 11:31 PM
Why would you want to replace a perfectly good engine? I must ask. I only replace engines after I have worn them down and it cost more to repair then replace.

The TRX 3.3 will last for a long time with proper maintenance and care for at least 7 gallons of fuel thru the engine before it requires a new piston and sleeve.

If you just want to waste money go for it is all I can say but for bashing you will not see much of a difference in speed and power.

If you race then maybe? But then again the stock engine will win you races if you know how to handle it on a track.

Few thoughts sure you can blow the money and have bragging rights on WOW I have this really cool engine but in reality will not improve performance much for bashing.

I perfer to spend my money on Suspension and better Radio equipment this is money better well spent.

Just by spending what you would on what I would call a cool engine you can improve steering and handling on suspension parts and better servos.

Did you know that the stock servos are plastic geared with only about 80 oz of torque

Just by spending about $70.00 bucks on a pair of Futuba 124 oz servos

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDWF8&P=ML

You can improve your steering and handling on rough terrain.

Well with this said you can blow you money on a new engine or you can improve your steering with new servos. Which is cheaper and perform better that is up to you to decide

ericem
08-17-2006, 11:36 PM
AW MAN i should have bought that servo instead of my hitec 645mg for my hyper 7 steering!!

JoeMAXX
08-18-2006, 12:10 AM
AW MAN i should have bought that servo instead of my hitec 645mg for my hyper 7 steering!!

The hitecs are about the same price as Futuba if bought thru Tower Hobbies and about the same speed.

The Hitec have 133 oz and the Futuba 124 oz of torque you did little better with the Hitec

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXUZ89&P=ML

The Futuba on Traxxas is a direct replacement of the cheesy Traxxas 2055 Servos.

To go with other servos on a Traxxas Revo requires a kit for different servo horns.

ericem
08-18-2006, 10:10 AM
Oh i see good point. But still to race a revo with a big block is a waste just because it will most off the time have the front tires in the air, the ideas is to get going but with all four wheels on the ground. You need control not only torque.

Adanmtxt1
08-18-2006, 07:13 PM
I have to agree. From what I have heard, either of the stock engines in the Revos (2.5R or 3.3) pack enough power and torque to satisfy racers under many conditions. The single best upgrade has to be the P2 rockers. Then you can get stiffer springs, reverse delete, and depending on the track you are on, maybe close or wide ratio gearsets. Something I want to do is put small springs between the calipers to reduce or eliminate brake pad drag.

Those are kind of the easy / inexpensive upgrades. The 'medium-cost' ones include changing over to single-servo operation, upgrading to TiN shocks, carbon chassis, and extensive chassis modification to pare weight. Also maybe playing with electronics and fuel tank distribution.

The most expensive thing you can do is to switch over to a new engine. Me? .18TM or TZ, hands down. I have the TM, but I envy those with the LRP .28 II, or whatever it is, but I still don't see why people switch over to the .21+ sized engines. It kind of defeats the purpose of racing the revo, but for bashing? GO FOR IT!!!!!

leroyjr1
08-18-2006, 10:03 PM
I want something with a ton of balls . I'm fairly new to the rc industry and i'm not the best engine tuner.So I figured if i have it running a little rich i have the h.p. to make up for it and the motor will live a little longer

DarkSavage
08-19-2006, 03:04 AM
Yea man, the 3.3 is a good engine. thats the engine i want to drop into my revo after i come up with some money.

JoeMAXX
08-20-2006, 10:29 PM
I want something with a ton of balls . I'm fairly new to the rc industry and i'm not the best engine tuner.So I figured if i have it running a little rich i have the h.p. to make up for it and the motor will live a little longer

The TRX 3.3 has plenty of power not as much torque as big blocks and the big block conversion is not cheap. Direct big block replacement engines are expensive and so are replacement kits. Have you looked into pricing? Do you have about $250.00 to spend to throw away a perfectly good engine for a little more power?

I run engines till they need replacing then spend the bucks if I think I need more power. The TRX 3.3 will last for a long while properly taken care of and is not that hard to tune.

If you purchase a Race big block you will have to re-learn how to tune the new engine and they do not come with any warrenties when you blow them.

Learn to tune what you have then move on if you feel you need to.

Few thoughts ;)

BELMONT1491
09-08-2006, 09:44 PM
yeah joemaxx has a good point, its not really worth it to do a big-block conversion. if you get a BB you add more weight, probably crapier fuel milage, and exhaust..i doubt you're able to use the stock exauhst with a new totally different engine..just get a 18 TM,TZ,look at the ofna replacements too. i think they have a .21 but i could of sworn i saw it saying it was discontinued by the .26 SB...and the conversion kit from traxxas is 50+ easily.if you're just bashing, look for a SB with the most torque..torque turns the wheels, not RPM's, they don't mean **** when it comes to moving weight. ooo yeah my engine has a max rpm of 40grand...oo cool how long does it take to get there? you see what im saying? just my opinion but... for bashing torque is all you're gonna need ( construction sites, woods, backyard....etc.)...

ilikewing
09-08-2006, 11:20 PM
I want something with a ton of balls . I'm fairly new to the rc industry and i'm not the best engine tuner.So I figured if i have it running a little rich i have the h.p. to make up for it and the motor will live a little longer
if you want a engine with BUT KICKEN ON THE JUMPS..! get this the rb 523, comes with mounts everything you need to install (basically)

Quinton
09-09-2006, 07:41 AM
Just don't run your engine TOO rich or it will fail just like you were running it too lean.

smithn50
10-24-2006, 12:03 AM
deleted orignial question...

MikeWz
10-24-2006, 08:26 AM
Oh i see good point. But still to race a revo with a big block is a waste just because it will most off the time have the front tires in the air, the ideas is to get going but with all four wheels on the ground. You need control not only torque.

You'd actually just wind up loosening the slipper to help keep the front wheels on the ground. There's only so much power you can put on the ground. If the stock motor is already breaking traction or flipping the truck right onto it's lid, putting a bigger motor in there won't really help you at all. The stock motor is already putting down all the power the truck can handle. The real shining point for the 3.3 is the revs it can turn. Those BB motors can't really touch that. Sure they can pull taller ratios with their torque, but they're not nearly as responsive as the 3.3 is. The BBs are either on or off, whereas the 3.3 is much easier to control throughout the power-band/trigger pull.

DarthRevo
10-26-2006, 08:38 PM
I like the picco.26 in mine

www.revo-world.com site for revos

smithn50
10-28-2006, 01:20 AM
[QUOTE=JoeMAXX]
The Futuba on Traxxas is a direct replacement of the cheesy Traxxas 2055 Servos.
[QUOTE]

Can you run these servos with any radio? Like a JR or a Specktrum? Whats the best radio out of these three? Also, what are the best servos to use? I know metal gearing is best along with 100+oz but what brand is best and most durable?