Fastest Engine with no Mods

**Rusty_Noob** · 10-09-2005 04:58 AM

Hey all,

Just wandering what the most powerful engine I can get for my rusty is with no mods. Gonna be running a cusom CVD set up so I shouldnt go shredding any axles, and if I do its my own fault :P

Thinking about it, I dont want the most powerful cause u see some max's which have like .30 in them so most power u can put in a rusty and make it useable. e.g. OS .18 TM

**SEEKandDESTROY2** · 10-09-2005 09:33 AM

The Picco.26 Max would be a great heavy powered motor with plenty of torque and speed. The stock Traxxas EZ-Start and Exhaust header hook right up to it.

**rustevo** · 10-09-2005 12:55 PM

I have a tm in mine its not as fast as the 2.5 but its close. it has loads of power. you could use a TZ.

**Rusty_Noob** · 10-09-2005 02:00 PM

The O.S. .18 TM isnt as fast as a 2.5?

I heard it had loads of torque which would allow better gear ratios to get that speed hmm, so the .18 isnt an upgrade as such

**moparrr07** · 10-09-2005 03:14 PM

not at top speed because it doesnt have as much rpm, but it has so much more power, so you can change the gearing and get better top speed with better acceleration, for example i haev a tm with a 22-65 gearing and a 5 inch tire, it gives me a 65mph top speed and i can still pul wheelies

**Rusty_Noob** · 10-09-2005 03:44 PM

Sounds like a plan

**moparrr07** · 10-10-2005 04:02 AM

youll be happy with the tm, the tm tuning is awsome, it takes about a 1/4 turn on the neddle to make it go up a couple degrees where as most other engine a 1/4 would go up 20, plus it holds that tune forever, i have only a 1/2 tank through mine so far and i havent had to change the settings yet, it remains at 245' every day i bring it out

**jrfink** · 10-10-2005 06:37 AM

Originally posted by moparrr07
i have only a 1/2 tank through mine so far and i havent had to change the settings yet

I'm confused there.

Typo? I guess you probably meant gallon instead of tank. Any engine will require some tuning from time to time. It's the nature of the beast. Some engines are easier to tune than others. Some hold a tune longer than others. A lot of that depends on the maintenance routine and care from the operator/mechanic.

Some engines provide better torque. Some are better for speed. It depends on what you're trying to achieve. There are many aftermarket engines to choose from. Usually a "mod" for an engine swap is little more than a linkage change or adjustment, a header change, maybe cutting the crankshaft, or grinding the motor mounts. You should take into consideration how much time and money you need to spend to make the car drive again before you just order an engine.

**Rusty_Noob** · 10-10-2005 07:36 AM

I understand that mr Fink

I will hold onto my 2.5 until I really need the upgrade I think. But then again I so want a more powerful engine

My mate just bought an RC car and it screams compared to mine and I wanna compete a bit better. Saying that though he does have a TC3 4WD road car with a 1.8hp 3 Port Evo .12 engine so I dont think I will ever compete.
I think I might just buy a TC3 kit, would be nice

**Dperkins8694** · 10-10-2005 08:51 AM

Originally posted by moparrr07
i haev a tm with a 22-65 gearing and a 5 inch tire, it gives me a 65mph top speed and i can still pul wheelies

I have a os tz, what would be the best gearing for this? I have all the speed I want just want all the torque I can get. Just a basher, dont ever race except when my daughters comes out with me.

**NWDave** · 10-10-2005 11:23 AM

Originally posted by moparrr07
i haev a tm with a 22-65 gearing and a 5 inch tire, it gives me a 65mph top speed and i can still pul wheelies

No way.... At anything over 50, the 5" tall tires would balloon so bad you wouldn't be able to control it. I need some video with a radar gun run to verify this isn't pure speculation. My stock 2.5 Rustler couldn't hardly keep the front end on the ground at 50 mph.

**moparrr07** · 10-10-2005 11:29 AM

people's biggest mistake with gearing is that the forget to factor in there tire size, a stock 4 inch tire wil completely change the geraing of a 5 inch tire, plus you have to remember a tire can balloon up up to 3/4 of an inch or so on each side, adding 1.5 inchs to it, for example, if you put moabs that are broken in and streach alot, you can make a bone stock rustler with stock gearing go 60 mph, with the right conditions

for a tm or tz, i would go with a 18-70 gearing with moabs(5 inches expanding to maybe 6.5 inches) this gives you a top speed of just around 60, but all of the low end of the tz or tm will make up that low end, its pointless to gear one of these engine very low because they can outrun anything in the low end already

hopefully somtime his week ill be able to get my car running, with moabs and a 22 65 gearing, this should push the top speed almost up to 80

http://www.waits.net/public/rcgears/

i use this program, link at bottom of page, just enter in your figures and you have a top speed, trans is 2.81 moabs balloon to 6.5 and a 34k rpm on my tm and im flying

**NWDave** · 10-10-2005 12:54 PM

The math is right, but your truck won't go even 65 mph with the 5 inch Moabs. If you were running some foam tires, and a low profile, I'd almost believe it, but since you showed that you're just using a math equasion to figure out the theoretical top speed, and haven't actually proven your setup, I really know it's not true. You'll just blow over, or barrel roll, somewhere around 55 mph.....

**lsdxm17** · 10-10-2005 06:57 PM

I have the .18 TM in mine w/22 tooth clutch bell, 64 tooth spur. It flys. WAY faster than my TRX 2.5.

**moparrr07** · 10-10-2005 08:05 PM

Originally posted by NWDave
The math is right, but your truck won't go even 65 mph with the 5 inch Moabs. If you were running some foam tires, and a low profile, I'd almost believe it, but since you showed that you're just using a math equasion to figure out the theoretical top speed, and haven't actually proven your setup, I really know it's not true. You'll just blow over, or barrel roll, somewhere around 55 mph.....

not true, 18t has already hit 60 with a radar if i remeber and the rustler gos about 55 stock with a gear change, and i have accually run it over 60, not tested by rader bout i can tell, just cause its screaming and the front tire balloon up a bunch, i couldnt go much over that because my hex accuall spun out the rims, yea its a hard feat but my drivetrain is builitproof and i now have a set of blue aluminium hexes and stronger rims, ill get a vid with a radar asapand anything under 70 is unacceptable and i do run it very low profile at those high speed, the a arm point up as they go out, if you make the tires any small it wont go as fast, where as the moabs are awsome for street anyways

**NWDave** · 10-10-2005 10:14 PM

How is it low profile if it has better than 2 inches under the body because of the 5" tires? I'm not calling you a fool or anything, I just haven't heard of a truck going that fast with strictly off road tires. Even the .21 powered 3 speed Schumacher truck DOESN'T go 70 mph like they say, it hits the low 60's in every test article I've read on it, in the real world.

**sk8r8920** · 10-10-2005 10:18 PM

now in real 1:1 cars its true that bigger tires=more top end. i still think its still theortical with nitro r/c. my theory is it increases top end like with 1:1 cars. 80 MPH oh my god id have to see that. just cause you got a biggger size engine in there doesnt mean its as faast. more torque yes, but smaller size egnines usually rev at higher rpms. if you want those speeds i heard the rossi mt .12 is a insane engine. i gave up with my engine endveours. the rusty is just so cram packed that its hard to fit in any engine. the 2.5 is fast enough for any basher and def enough for racing in club races. the .12 tz 5 port is a FAST engine. now you see these touring cars making speed runs with .12 and .15 engines. if i were trying to get speed id follow with touring cars cause obviously they are doing someting right.

**sk8r8920** · 10-10-2005 10:21 PM

Originally posted by moparrr07

not true, 18t has already hit 60 with a radar if i remeber and the rustler gos about 55 stock with a gear change, and i have accually run it over 60, not tested by rader bout i can tell, just cause its screaming and the front tire balloon up a bunch, i couldnt go much over that because my hex accuall spun out the rims, yea its a hard feat but my drivetrain is builitproof and i now have a set of blue aluminium hexes and stronger rims, ill get a vid with a radar asapand anything under 70 is unacceptable and i do run it very low profile at those high speed, the a arm point up as they go out, if you make the tires any small it wont go as fast, where as the moabs are awsome for street anyways

you cant realy say that its goign 60 with out knowing for a fact. it looks like its goign insanely fast because its a small scale car. slot cars are reaaal fast, but that is because its not scale. it looksl iek they are doing hundreds of mphs but they arent. im not talking about those chea kmart ones either.

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