MitchT/Emaxx1989

tell me all of you rexperiences or opinions on thsi engine

studysession

Did you buy one, or are you thinking about it?

I have one. Only did the 1st tank on the break in process. So no real opinions yet.

MitchT/Emaxx1989

tell me how everything goes. im 13 and on my 5th nitro truck and the trx 2.5 is really starting to piss me off. the engine power is good. enough to make u happy and good wheelies but i dont like the fact that i have to twist needles everytime the sun comes out of the clouds or goes behine them a 5 temp change makes my maxx run like crap. im curious though is the maxx built good enough strong enough axles and all that good stuff to handle the fantom or will they start to wear and twist. keep me posted on how its running

studysession

I probably won't do much with it this weekend. Maybe next. I spend a lot of time with my other RC's. This one is my wife's and she wants it finished but it is not most important thing to her at the moment.

CGi_Rogue

I haven't had mine too long yet to tell you to much about how everything will hold up but, I'm sure that you will have to do some upgrading. The rear axles on mine are starting to twist and that was before I put in the Fantom. There is a noticeable difference in power and top speed. As far as tuning goes, night and day difference between the 2.5 and the Fantom, I had some good luck with my 2.5 but had the normal problems of over heating and stalling. The Fantom does run hot but that is the way they designed it. It also seems to hold a tune well, I think on day I ran 5 to 6 tanks through it and only tuned once. So far I the Fantom has been great, I only wish that I would have changed to is sooner!

sillypoo

will the fatom .18 fit in a rustler .15 body? if u kow what i mean and also can u tell me how much horse power the two egies compare to. traxxas .25 + .18?





TY

studysession

First it is TRX 2.5 not .25 - The TRX 2.5 is a .15 size engine. The Fantom .18 has loads more power than both. The .18 physicly will fit fine, but all the steps in setting it up and getting it to work is up to you or getting help from someone who physically can see it.

I would go with the Fantom .18 myself. I bought one for my TMaxx but have not finish the run in proceedure yet.

Cheers, Keith H

PS - if you ask something in a post a post, please be patient and dont email everyone the same question.

jefx

The horsepower is this:

TRX 2.5 = 1.3 HP

Fantom .18 = 1.95 HP

T-Maxx killer with my cen mt2

no actually the t-maxx has .98 or just about 1hp it's 60% more power than the old .15 the old one had .68hp, so 60% is about 1hp just thought I would let you know

raceme

so a .18 is the same size as a .15...

kimberklr

nope. 1.33hp

spazzyfry123

No a .15 is 2.5 cc's (hence the 2.5 engine) and a .18 is 3.0 cc's (hence the Sirio 3.0).

I've got the Fantom FR18 and it is one sweet engine, as long as you break it in properly, you will be very satisfied.

T-Maxx killer with my cen mt2

NOPE your wrong why don't you go to wildhobbies.com and ask kerry about that subject he will tell that rcca dyno tested the trx 2.5 under no pressureload so it was basically usless. Have'nt you noticed that rcca is some what biased toward traxxas like everyother page is t-maxx this traxxas that,

jefx

Well the rest of the world rates it at 1.33, but I guess everyone else is wrong and you're right.
If you've ever ran one you'd know that it has at least over 1 HP.

studysession

They are not the same - but physically anything that a .15 can fit into, so can a .18

T-Maxx killer with my cen mt2

who's the rest of the world? rcca, people just go by what they see or hear. who the hell said I never ran one? I USED TO HAVE ONE! before I sold it. I drive my cen mt2 aganist my freinds t-maxx every weekend and you can cleary see and feel that the mt2 is a little bit more power and the mt2 has 1.2hp, the t-maxx has a rough powerband and the mt2 has a smooth powerband which helps it climb better. and I never said it had less than 1hp. I am also not the only one to say this its all over www.wildhobbies.com ask Kerry Garrison.

rcmtdriver2000

I have hada 2.5. It pulled wheelies and gave the truck new life at one time. It broke so i got the o.s. cv-rx. The o.s. is rated at 1.3 hp and didn't have the power of the 2.5. The 2.5 has to be over 1.3 HP fellas.

jefx

Who's the rest of the world you asked? Everyone but you and Kerry.
No I'm not gonna ask Kerry at wild hobbies. One man's conspiracy theory of how this engine was dyno'd really means nothing to me. While I'm sure he has a compelling argument of how the TRX 2.5 is a big lie, and Cen is much better, you have to consider the source. Isn't he the lead guy of the Cen forum?
Although he may be an intelligent person, his involvment with Cen and your screen name (T-Maxx killer with my cen mt2) leads me to believe you are both biased in your opinions. It would be very hard for me to believe either one of you.

Horsepower ratings are overrated anyways. Different companies test their products differently, and until there is one universaly accepted method of dyno testing, the numbers don't mean much.
As far as your comparison of the mt2 and Tmaxx, you have to take the weight and size of the Tmaxx into consideration. For example, just because the Nitro 4-tec is much faster than a Tmaxx, doesn't mean the engine is more powerful (they have the same engines).