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Old 10-08-2006, 11:32 PM   #1
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Default AXE ROSSI ENGINES???

1.has anyone used these engines before?
2.where do they come from and what are they like?

they don't seem that expensive and what i've read on hobby shop sites is that they are powerful and reliable but they could be saying that to sell them. just wanted to see if anyone out there had any information and experience with these engines mainly 1/10th and 1/8th onroad.

thanx
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Old 10-09-2006, 03:02 AM   #2
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The Axe Rossi Motors are from Italy. Previously I would say the onroad motors were not overly competitive . The buggy motors are very good and nowadays are also very good pricewise . If the Cobra onroad motor is as good as the buggy motor it will be a winner. atm I only run offroad but am planning to go 8th onroad again next year with the Cobra.

Also there is a new competitive 12 motor due to be released soon...
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Old 10-09-2006, 03:08 AM   #3
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I have been running the off road engines ,namely the Black Magic,Speed and the Cobra.
Axemotor.it has more info.
one of the original Rossi family as they are cousins to NovaRossi.
The offroad engines are awesome ,great quality and super performance.
Initial quality issues with carbs have been sorted out.
I have been trying to find out about the onroad .12 and .21 engines.
Doesnt look like there is a lot of guys running them.
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Old 10-09-2006, 05:08 AM   #4
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what i have been looking at are the x3 .12 for 1/10th(1.7hp,38000rpm) and ls1 .21 for 1/8(2.98hp,39000rpm)they seem impressive. what i have read is that they have awesome power, great fuel economy and with great reliabityl
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Old 10-09-2006, 07:58 AM   #5
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Quote:
Originally Posted by EVIL-ET
what i have been looking at are the x3 .12 for 1/10th(1.7hp,38000rpm) and ls1 .21 for 1/8(2.98hp,39000rpm)they seem impressive. what i have read is that they have awesome power, great fuel economy and with great reliabityl
2 of my friends run the 5 port Axe Rossi, and I haven't heard any complaints from them..
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Old 10-09-2006, 12:15 PM   #6
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The onroad .21 Cobra is supposedly a missile with it being one of the fastest engines at a recent meet in Italy.
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Old 10-09-2006, 12:24 PM   #7
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Default Rossi

I have tried the X3 and found it ridiculously tight - took forever to run in- and impossible to tune.

Adjustable exhausts are [email protected] unless you run them tight the vibration kills the fine threads which then strip -and they leak.

I am trying the 197r21 (cobra)on-road but have just finished running it in. Also took forever. Fit a new rod after running in.

It has a plastic insulator around the carb which is pretty soft and looks like it will work loose at the pinch bolt. Especially if the linkage is not perfectly aligned.

Motor quality is good but technical info and support is non existant.

If you believe the info in the downloadable catalogue then the 198r21 (off-road) makes more power at lower revs and for less money than the on-road! (seriously optimistic figures anyway)

There is no info as to shimming/plug recomendations, no power curve to help with gearing/pipe selection etc. And no info from other users/dealers.

No good trying to contact them as it seems no one technical speaks english.

Not a motor for a novice.

Will give it a run when it eventually stops raining.
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Old 07-24-2007, 08:12 AM   #8
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Mike have you run teh motor yet ???
What is your opinion for onroad ?
My offroad motors took at least 8-10 liters to run in well but i cant complain as they have awesome life.
My Cobra is over 30 liters and my Black Magic is just over 70 liters.
Cobra has had a front bearing change and the BM has 2 bearing changes to front and main bearing and a new rod but still runs awesome in my truggy.
Ive got a .12 Cobra but havent taken it out of the box yet.
Any one try teh .12 Cobra out yet ??
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Old 08-10-2007, 12:52 AM   #9
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I'm running a cobra in my buggy, its a great engine. It took a while to run in. Now that it has been run in and tunned its a good engine, match it with the axe pipe and you are set. Where I live about 65% of the racers here use them or the axe mamba.
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Old 08-10-2007, 03:45 AM   #10
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The Axe Cobra is a great motor for Buggies for the price. In Australia they are doing extremely well , because here they are mostly sold with a turbo head button and .5mm shims as standard. It is more than a match for any other buggy motor available at the moment without doubt. The 2050 Axe exhaust is well matched to this motor.
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Old 08-29-2007, 05:50 PM   #11
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If you're wondering how powerful the cobra is.. better watch this

http://www.rcuvideos.com/item/FSF410SL7LVNQ8C0

My suggestion about the Cobra Standard or Modified (proudly I got the modded version).. DONT HAVE SECOND THOUGHTS BUYING IT!
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Old 12-03-2007, 12:45 PM   #12
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Questions??

Hi guys,

I'm just breaking in the Cobra engine with the heat cycle method.
With the engine on the car, I runned 5x 3 min with 25% throttle (EPA setting). Then runned it 4x 4 min with 50% throttle.
After the heatcycle period of about 2,5 tanks, I put the throttle EPA at 75%.
Now it has approx 2l (half gallon) of 30% Byron on it using R5 OS plug.
What should be the temp of the engine?
After 5 minutes run on the track at race pace, the temp reading is 300F, which I think is a bit hot. Even when there is visible smoke trail when hitting the throttle on low and high end!

Is this normal? Does the engine still needs to have more run in time?
What can I do to bring the temp down?
Tried to run it rich, however, the temp remain that high.
Pinch is still really tight and I still feel the scratchy metal at TDC.

Thanks in advance for any advice!!
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Old 12-09-2007, 01:29 AM   #13
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Quote:
Originally Posted by Mister-E View Post
Hi guys,

I'm just breaking in the Cobra engine with the heat cycle method.
With the engine on the car, I runned 5x 3 min with 25% throttle (EPA setting). Then runned it 4x 4 min with 50% throttle.
After the heatcycle period of about 2,5 tanks, I put the throttle EPA at 75%.
Now it has approx 2l (half gallon) of 30% Byron on it using R5 OS plug.
What should be the temp of the engine?
After 5 minutes run on the track at race pace, the temp reading is 300F, which I think is a bit hot. Even when there is visible smoke trail when hitting the throttle on low and high end!

Is this normal? Does the engine still needs to have more run in time?
What can I do to bring the temp down?
Tried to run it rich, however, the temp remain that high.
Pinch is still really tight and I still feel the scratchy metal at TDC.

Thanks in advance for any advice!!
Use the Axe R7 plug . Also when the motor is new it will seem too rich when it is cold. Give it at least 5 minutes on the track before trying to tune it . These motors are definitely as good as or better than any other motor available but like all motors you will need to learn how to get the best from them. ALWAYS start on the rich side and work your way in..
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Old 12-09-2007, 02:10 AM   #14
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Quote:
Originally Posted by Qlder View Post
Use the Axe R7 plug . Also when the motor is new it will seem too rich when it is cold. Give it at least 5 minutes on the track before trying to tune it . These motors are definitely as good as or better than any other motor available but like all motors you will need to learn how to get the best from them. ALWAYS start on the rich side and work your way in..
I have found some times when you limet the epa for the throttal you can be running your engine too lean because you have limeted the throttal on the servo your always running in the leanest part of the throttal. You should always have full throttal. Fuel dose alot for cooling of theses engines. What i do when useing a engine Brake in like you have done. Its not a matter of limeting the throttal you have to be smooth on the throttal some times even a new engine may need to be run at full throttal under load with low top rpm's due to a ritch air/fuel mixture to help cool the engine during the most important part of its life Brake in. most important thing is the engine must not have high rpm's it must be ritch and 4 stroking. Qlder is right a cold plug will help.

Last edited by Sirio2127; 12-09-2007 at 03:00 AM.
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Old 12-12-2007, 01:04 PM   #15
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Tx a lot for the advices guys!!

The variety and availability for the plugs at the LHS is a challenge.
I was able to choose between the A5 and the R5 of OS whereby the R5 is the cooler version.

Concerning the throttle, I came from the electric on road world, so it's smooth. => Still need to gain a lot of experience on nitro world

I will try with setting the EPA of my throttle to the maximum.
That could be the reason why the engine reaches the 300F, after which I immediately stop from running
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