I am looking for a new motor for my revo. The 2.5R is just not cutting it. It is to hard to keeped tuned. Which motor is the best one out there. I was looking at the FantomFR18 and the OS 18TM. I stilll want the top end speed but I want that good low end torgue out of the corners and the reliability to hold a tune. I am primarily racing my revo.
Sirio .23 would kill
revo- Qoncepts conversion, wasp .26, 5645 mg steering trottle, foc,Mip shock Bodies and shafts, Aluminum Pushrods, jr xr3i radio and everyother hop up you can think of that i cant list "In the three line limit"
2.5r for sale sirio crankshaft 14 tanks PM me
I want to keep it a small blick. I am racing it. I would love to have a basher with a big block. We'll see what santa brings I guess.
os tm- very easy to tune and it holds that tune great, very reliable
i smelled nitro fuel while taking a shower this morning
I was leaning more towards the OS but I just don't know if it will give that low end torque.
we will all have to find out when someone actually gets one.
blue looks like lightning as it blows by!!!! time to break out the nitro and have some fun!!!!
take a look at the fantom fr .18, 1.95 hp direct drop in for a tmaxx not sure if it is for a revo but either way i have it on my maxx and its a great motor easy to tune and powerful as heck when broken in correctly.....
take a look......
I have the FR18 on my t-maxx and it is the best money I every spent. It has more than enough torque. I have a hard time keeping the front end on the ground. It is a great engine to race with I have never had a problem with it. I highly recomend it.
hp ratings dont mean anything- if you want low end go with a siro .23
i smelled nitro fuel while taking a shower this morning
I was headed towards the FR 18 at first but then I heard about the OS. HOw is the Fantom out of the corners? Is it a lot snappier than the stocker. I need a good motor for lots of short staight aways and corners. But I still need the great top speed too.
Sancho - I'm not bashing you so don't take this the wrong way. The revo is my first "real" r/c and my first nitro ever. I have never seen one in real life except on a picture till I got a revo. I only bash so far and I spent about 3 hours for about 3 days learning to tune the 2.5r. The conditions would change from cold to warm and from humid to dry. So I think I learned a lot then. If I could learn how to tune the 2.5r and I don't even race it yet, then I bet you can too. Just spend some time making adjustments and seeing what they do. Then when the conditions change you'll be ready for it. You'll be an expert. Now for the engine, if you still feel you want a new engine get the os .18 tm, if you have the cash, lol. Or you can get a sirio crank and piston/sleeve for the 2.5. The crank will improve a lot of low end and the piston/sleeve will give you more top end. I was looking at the os .18 tm but itís a little too pricey for my budget. I might get it in the future if the 2.5r dies and I have the cash for it. So my final verdict is, get the o.s. .18tm and you won't be disappointed. They make a lot of engines and they know what they are doing. Thatís why the tm is so popular.
I suspect it will be popular, and a great motor. But I do think you have to be able to buy it and/or own it or know someone that has one to give a true review.Originally posted by quickywd01
Thatís why the tm is so popular.
The OS isn't available yet and nobody has one. Please, by all means buy one and tell us how it runs once they are available. I think there are a ton of people waiting to hear about it.
I was fast.... Now I just hack!
I Have SRS (Short Revo Syndrome)
Just remember what I said, the tm is better.
Obviously the OS tm is not out yet but if it is like other OS engines, it will be easy to tune and a great overall engine. The 2.5/ 2.5r can be a challenge for a beginner, but once you get the hang of it it is fairly easy to tune. Some engines are said to be easier to tune, I don't buy into that as much, I think the main thing is that the carbs of some engines are more forgiving to huge needle changes than others. With the trx 2.5/ 2.5r, I have learned to turn the needles no more than 1/8th of a turn at a time, so use small increments and adjust only one needle at a time.
Also, consider that the 2.5 will be a lot of peoples first nitro engine. Affter they upgrade, the next engine should be easier to tune than their first, just because of prior experience. The 2.5 wasn't hard to tune for me - but it was a little different because I've never owned a small block. Other than that, all of the same principles apply, but ya gotta get used to how it "feels."
I get get it tuned pretty easily but I just don't like how I have to change the settings everytime I run the thing. We I race it I have to adjust it in between each race. I get really tired of all that. That is why I want a new engine that will just hold a good tune. I will let everybody know how the OS does. Why spend the money on a new crank and sleeve when you can spend a little extra a get a better engine with a reliable carb?
Good thing you explained it more. I didn't know you have to retune it in between each race. Thats strange. But I would tell you to get the o.s. .18 tm, I think I might even get one too when it's time. About the sleeve, piston, and rod thing, I went and checked the prices and I would rather buy the .18 tm unless I had a bag of money.
That is my number one reason why I will be buying a new engine rather than rebuilding my 2.5r. I'm tiered of the carb slide. No matter how I position it, it sticks.Originally posted by sancho
Iwhen you can spend a little extra a get a better engine with a reliable carb?
If they make it, I can brake it!
A lot of that is the way traxxas has their linkages designed... If it was pulled strait out, with NO force applied to the side, I doubt this would happen. Thats part of the reason for making my own .21 conversion - I am going to have the carb slide open to the INSIDE of the Revo to eliminate wear and tear on the carb slide... I don't wanna junk the slides on my stable of .21 engines... That would really stink!
Just ordered the OS from tower hobbies. $207.98 shipped. I should have it shortly so I will let everybody know how it does if we don't have to much snow here by the time it gets here.
I vote for the P2. 2.1HP and wow i never thought my maxx would go that fast or be that quick. I just ordered the New Era motor mount and ill be robbing the P2 out of my max till the new one gets here.
rcaa recently did some tests and the os .18cvr proved to be one of the fastest and strongest engines. Then they released the os .18tm which is supposed to be even better then the cvr. Tower has them in stock now and i have one thats comming tomorrow morning. I will let you know how the os .18 is and the fantom is also a good motor but after having one engine from each company i would go for the os. You shouldnt be dissapointed with the os.
You'll need to contact the manufacturer of the engine for support for their products.
The Super Derecho