Rossi .53 for speed??
11-05-2008, 12:42 PM
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RE: Rossi .53 for speed??
ORIGINAL: scoeroo
Speedboy,
I should be back home some time around thanks giving ( currently out on a project ) if you can hangout till then I will give you the low down with pics when I tweak another rossi that I've recently purchased.
Speedboy,
I should be back home some time around thanks giving ( currently out on a project ) if you can hangout till then I will give you the low down with pics when I tweak another rossi that I've recently purchased.
I'll be pending for you info .
Many thanks scoeroo
.
11-10-2008, 02:58 PM
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RE: Rossi .53 for speed??
your rossi .53 fan engine has higher timing out of the box, than the side exhaust. if you look in the exhaust port you should see the top of the exhaust port on the sleeve flush with the top of the case. leave the head as is, its got lower compression for higher nitro use as is. the sleeve has different port count than the side exhaust .53
12-21-2008, 08:21 AM
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RE: Rossi .53 for speed??
I got the Rossi 53 and just ran her in, got only 1/2 a gallon of Byron 5% semi synthetic (16% oil) through her. Ran it in with a 10x4 as I could not get a 9x6. After 1/2 a gallon she would peak at 19,200 RPM. Hope to finish another 1/2 gallon tomorrow morning!
12-21-2008, 09:35 PM
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RE: Rossi .53 for speed??
ORIGINAL: tIANci
I got the Rossi 53 and just ran her in, got only 1/2 a gallon of Byron 5% semi synthetic (16% oil) through her. Ran it in with a 10x4 as I could not get a 9x6. After 1/2 a gallon she would peak at 19,200 RPM. Hope to finish another 1/2 gallon tomorrow morning!
I got the Rossi 53 and just ran her in, got only 1/2 a gallon of Byron 5% semi synthetic (16% oil) through her. Ran it in with a 10x4 as I could not get a 9x6. After 1/2 a gallon she would peak at 19,200 RPM. Hope to finish another 1/2 gallon tomorrow morning!
12-21-2008, 10:13 PM
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RE: Rossi .53 for speed??
Julian ... the stock banana muffler that comes with it as a set ... am I suppose to get more RPM? I did not really try to push the motor past 19,200 RPM, it was screaming so loud I thought something would break. 
12-21-2008, 11:18 PM
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RE: Rossi .53 for speed??
Okay ... I will keep the 10x4 to about 18K only and get a proper prop, maybe a CF one from APC. Just a little query, I have not bothered with the LSN at the moment but I think should be able to complete the running in today. I would like to know how well the Rossi 53 idles and transits. Is it as smooth as say a 46AX or the TT46? I had the Rossi 45 and the idle was so so but the mid range/transition really sucked. Just want to know what to expect so I need not mess about so much with the LSN. Thanks guys!!!
12-22-2008, 03:25 AM
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RE: Rossi .53 for speed??
Hey tIANci good to know you have the Rossi 53 already .
Regarding the LSN , in my case I've never had a hard time with it , just needed a small adjusts in 4 years now , even after having it running at 2200 RPM (aprox.) for 90 seconds the transition is immediately to full throttle . Yes similar to the OS BUT with much more power Ohh yeaa [8D].
Just curios wich Rossi 53 you have , the one with red head or the one with silver head wich also has a bigger venturi ???
Regarding the LSN , in my case I've never had a hard time with it , just needed a small adjusts in 4 years now , even after having it running at 2200 RPM (aprox.) for 90 seconds the transition is immediately to full throttle . Yes similar to the OS BUT with much more power Ohh yeaa [8D].
Just curios wich Rossi 53 you have , the one with red head or the one with silver head wich also has a bigger venturi ???
12-22-2008, 04:14 AM
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RE: Rossi .53 for speed??
SpeedBoy ... its the red one ... I dare not imagine if the venturi is bigger! Heheheehee ... am going off to run another half a gallon through her and see how the idle gets ... here is are a couple of pics of the run in yesterday ... no worries about the test bench, it weighs in at about 30 lbs! So far the guys at the field have tolerated the running in.
12-22-2008, 06:40 AM
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RE: Rossi .53 for speed??
Finally put another 5 tanks through the Rossi 53 today. I put on a 10x6 for the last tank. Opened up the LSN about 3/4 turn and I tell you this baby can purr like a kitten! Its got that throaty tone. Nothing beats the idling of an Italian engine. It reminds me of the car engines.
The transition is sweet and crisp. Peak RPM at the moment on the 10x6 with Byron 5% is 15,650 RPM. Not bad at all when you consider that it will hold that RPM for a good 6 mins. I wonder what sort of RPM I can get if I were to put on a Jett Stream muffler?
The transition is sweet and crisp. Peak RPM at the moment on the 10x6 with Byron 5% is 15,650 RPM. Not bad at all when you consider that it will hold that RPM for a good 6 mins. I wonder what sort of RPM I can get if I were to put on a Jett Stream muffler?
12-22-2008, 11:09 AM
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RE: Rossi .53 for speed??
Roo-man ... thanks for the offer and I think I will take you up on it. I want to test her out on the stock muffler first and then the Jett Stream. Just sent Dub an email and will see how it goes. This is getting outta hand, this is why I gave up nitro touring cars! Oh man ... I am in trouble.
I now am looking for a plane for the Rossi 53 and will probably test it out on my pal's brand new Shrike, I am waiting for the builder to let me know if its built strong enough but at 15,500 RPM on a 10x6 I doubt it will be a bullet. Hmmmm ... maybe the Super Sportster will survive ...
I now am looking for a plane for the Rossi 53 and will probably test it out on my pal's brand new Shrike, I am waiting for the builder to let me know if its built strong enough but at 15,500 RPM on a 10x6 I doubt it will be a bullet. Hmmmm ... maybe the Super Sportster will survive ...
12-22-2008, 12:41 PM
#38
RE: Rossi .53 for speed??
Why don't you stick it in a viper ?
Slight modification to the mounting plate is all it requires,
Trust me , you will not be sorry , this plane will let that engine do what it was made to do, 150 mph !!!!!!!
The pipe you want from Dub is the pylon pipe, it has a resonant mode at 19,000 to 20,000 rpm , this is the pipe I use on my 53
12-22-2008, 09:29 PM
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RE: Rossi .53 for speed??
ORIGINAL: scoeroo
Why don't you stick it in a viper ?
Slight modification to the mounting plate is all it requires,
Trust me , you will not be sorry , this plane will let that engine do what it was made to do, 150 mph !!!!!!!
The pipe you want from Dub is the pylon pipe, it has a resonant mode at 19,000 to 20,000 rpm , this is the pipe I use on my 53
Why don't you stick it in a viper ?
Slight modification to the mounting plate is all it requires,
Trust me , you will not be sorry , this plane will let that engine do what it was made to do, 150 mph !!!!!!!
The pipe you want from Dub is the pylon pipe, it has a resonant mode at 19,000 to 20,000 rpm , this is the pipe I use on my 53
[link=http://Test Data]http://rossienginesusa.us/SGME/images/z_misc/Rossi_Test_Q40.pdf[/link]
12-23-2008, 10:05 AM
#40
RE: Rossi .53 for speed??
"
"T"
Dub makes a pylon pipe for the higher revving engines,
The ulta thrust or jett thrust are for the 16,000rpm range engines , this pipe is designed to resonate at this rpm give or take a 1000,
But the pylon pipes from Dub opperate at a higher resonant 19,500 rpm and above , port timeing has alot to do with getting an enginge to sing.
"T"
Dub makes a pylon pipe for the higher revving engines,
The ulta thrust or jett thrust are for the 16,000rpm range engines , this pipe is designed to resonate at this rpm give or take a 1000,
But the pylon pipes from Dub opperate at a higher resonant 19,500 rpm and above , port timeing has alot to do with getting an enginge to sing.
12-23-2008, 11:33 AM
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RE: Rossi .53 for speed??
Roo Man ... thanks for the tip ... lemme check it out. I ran the Rossi with a 8.8 x 7.75, was a little low on sunlight so I used a torch to tach her, it read 17,250 RPMs ... I wonder if it is correct, will run her again tomorrow and double check on it. I just found out my pal runs his Viper on the MVVS Q40 engine and he has glassed the firewall and nothing is loose. So test aircraft will be the Viper.
I just found out my pal runs his Viper on the MVVS Q40 engine and he has glassed the firewall and nothing is loose. So test aircraft will be the Viper.
12-25-2008, 08:30 AM
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RE: Rossi .53 for speed??
Merry Christmas guys!!! Wanna ask something ... castor based fuel is really messy and I was wondering if 100% synthetic fuel would be ok for a high performance engine? Anyone who runs at such RPM uses it?
12-28-2008, 12:18 AM
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RE: Rossi .53 for speed??
ORIGINAL: scoeroo
Can't beat a tweeked rossi,
I turn a 8.8x8.75 at 19200 rpm on the ground, my viper is good for 150+ mph.
You got to lift the exhaust timing - open the exhaust all the way- then stick a Jett pylon/racing short pipe with adapter, you may want to consider smoothing the exhaust transition in the adapter as I did on mine.
Next thing is get a 45 head and swap out the 53 , the 45 head has higher compresion, ( I have many rossi parts to mix and match )
Now get a carby off Jett with the largest ventury possible , I think mine was a 12 mm from memory, this will let the air in and still give you a good idle.
Plug is a siggp002 tuned pipe , sigg products and they are $6 bucks or so,
Fuel is 5% coolpower,
All this will wake your rossi up , I've been playing with these things for years and are a powerhouse engine if worked over.
My viper is for fun only , gave up racing due to the politics - that takes all the fun out of things.
Have fun .
Can't beat a tweeked rossi,
I turn a 8.8x8.75 at 19200 rpm on the ground, my viper is good for 150+ mph.
You got to lift the exhaust timing - open the exhaust all the way- then stick a Jett pylon/racing short pipe with adapter, you may want to consider smoothing the exhaust transition in the adapter as I did on mine.
Next thing is get a 45 head and swap out the 53 , the 45 head has higher compresion, ( I have many rossi parts to mix and match )
Now get a carby off Jett with the largest ventury possible , I think mine was a 12 mm from memory, this will let the air in and still give you a good idle.
Plug is a siggp002 tuned pipe , sigg products and they are $6 bucks or so,
Fuel is 5% coolpower,
All this will wake your rossi up , I've been playing with these things for years and are a powerhouse engine if worked over.
My viper is for fun only , gave up racing due to the politics - that takes all the fun out of things.
Have fun .
:If you have access to EDM facilities, have the crank bore opened out to 11mm (or even 12mm if you are brave!) The crank OD is 17mm so there is lots of meat.
Smooth out the intake port window of the crank with some careful grinding.
Grind a "flute" into the crankshaft web area.
Then, have a Nelson plug head button made for the engine- Henry Nelson makes blanks for that purpose.
Have fun indeed!
P
12-28-2008, 12:25 AM
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RE: Rossi .53 for speed??
ORIGINAL: tIANci
Merry Christmas guys!!! Wanna ask something ... castor based fuel is really messy and I was wondering if 100% synthetic fuel would be ok for a high performance engine? Anyone who runs at such RPM uses it?
Merry Christmas guys!!! Wanna ask something ... castor based fuel is really messy and I was wondering if 100% synthetic fuel would be ok for a high performance engine? Anyone who runs at such RPM uses it?
P
12-28-2008, 02:08 AM
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RE: Rossi .53 for speed??
Thanks a lot, guess all that sort of info has trickled down to today as castor is 'best' does have some truth when you are running at high temp. Guess I will just do my best to keep the engine clean and stick with semi synth at the least. Thanks again.
12-28-2008, 07:13 PM
#46
RE: Rossi .53 for speed??
I use nothing but cool power 5% nitro , NO CASTOR , castor makes to much mess on the casings and if let build up tomuch will restrict externtal cooling, castor also causes to much internal crap build up which can lead to detonation / pre ignition issues.
Looking at the pics of the motor running it has way too much oil content "CASTOR"
I prefer to run only 2% castor in a ringed engine,
But don't forget - every one has their own opinion on what to run
Looking at the pics of the motor running it has way too much oil content "CASTOR"
I prefer to run only 2% castor in a ringed engine,
But don't forget - every one has their own opinion on what to run
12-28-2008, 09:27 PM
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RE: Rossi .53 for speed??
Roo man ... thanks for the info, at least I know it will happily run on synth fuel. I have always run all my engines on Cool Power synth fuel but never owned something in the high performance range. I agree that the castor really messes things up, the internal bits gets gunky too.
12-28-2008, 11:40 PM
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RE: Rossi .53 for speed??
ORIGINAL: scoeroo
castor also causes to much internal crap
castor also causes to much internal crap
P
