tony0707

hi
would like any info you have- ,-from experience , regarding the older Rossi 60 engines
prop size
fuel used
other carbs you can use in the engine
mufflers that will fit the engine
pipes that work on the engine-, and set up length
best rpm to run the engine at to be on the power band-,with a muffler and on a pipe

thanks in advance-best regards TONY

earlwb

The Rossi carbs are good. I have not had any problems with them at all. You can get a Perry carb set up for Rossi engines too.
Using a tuned muffler unlocks all of the engine's performance, albeit you can get some more poerformance using a tuned pipe though.
For old classic pattern flying I used a 11x7 or 11x8 prop. A 12x7 would work too. I used 5% nitromethane glow fuel in my engines. Fox long glow plug.
I liked the Rossi carbs that had the remote needle valve adjuster on them for use with tuned pipes, so if I had to I could tweak the engine in the air.
I think that http://shop.vendio.com/RossiEnginesU..._id=2039499748 still has some bridge adapters to sell for adapting OS 61SF mufflers to the engines. But one can make a bridge adapter easily enough.

You can get engines and parts here too http://shop.vendio.com/RossiEnginesUSA/store.html

Here is a Perry carb that ought to fit mosrt Rossi 10cc engines.www.ebay.com/itm/PERRY-CARBURETOR-ROSSI-60-ID-312-OD-625-LARGE-912-/190583468820
One should measure the carb inlet side on the engine first to make sure they get the correct one. There are Perry pump backplates and Perry pumper carbs one could get too.

Here is a video of when I test ran one of mine a while back. I was using a Performance Specialties tuned muffer (aka a Nelson design) for this run using a bridge adapter. This engine has the remote needle valve unit on it, you use a extra servo on a proportional aux channel in the plane to control it with.

[youtube]http://www.youtube.com/watch?v=e0vsUUzADdI[/youtube]



Here is pics of the bridge adapet setup:

freakingfast

My Feedback: (3)

I have seen on several occasions guys havin fits with Rossis, but they were running too much nitro. Some Rossis and Webras just wont tolerate 15% nitro, noted by constantly "chasing" tuning and blowing glow plugs. Notice that earlwb mentioned 5% nitro? Start low and go up if you want more nitro and look for the signs. (I know guys want to use one fuel type). You could add a .005-.010" head shim to run more nitro, but the power gains aren't worth the extra fuel price if that's your goal on these engines.

earlwb

yes you need extra head shims if you want to run more nitro in the engines. 5% is probably the most if you don't lower the compression ratio with them.

freakingfast

My Feedback: (3)

One guy at the field with a Rossi 60 on a Shrike 40 said " I bought this engine because I heard they were a hot engine, but it's a piece of junk". I said "No it's not". I lowered his 15% fuel down with FAI fuel, re-tweaked the HS needle as said "Try it now". Boy was he a happy camper after that, rippen holes in the sky.

tony0707

hi earlwb and freaking fast
thank you so much for your info
great info to help me run the engine right
best regards TONY

turbo.gst

My Feedback: (8)

The Rossi 60 shares the same muffler bolt pattern as the Enya 60X ,Fox eagle III, MVVS 10cc, OS 61fsr, and YS 60. Engine works great on FAI fuel ( 80% methonal, 20% castor as per rules of the day).

tony0707

turbo.gst
thanks for solving my muffler issue-i have an OS 61 fsr muffler for the Rossi 60 to get it to run and see how it does

i really like the short expansion chamber type mufflers -to increase power a bit
best regards tony

14Glen

Earlwb, Hello,
I have 2 black head Rossi's a 60 side exhaust and 61 rear exhaust. I just came in from running the 60 on the stand. It has a pipe on it, I have not started cutting the pipe yet. I wanted to get a base line. With a 11x8 (ACP), I was able to get 12,600. With a 12x6 (Master) I was able to get 12,300. With a 11x6 (ACP) I was able to get 14,000.

I don't have any info on what the rpm's window is, Do you know this 60 is capable of? What about the 61? What do you think the recommended prop size should be? The 61 is going into a Ultimate bi-plane 40.

Thanks, Glen

earlwb

Peak HP is around 17,000 RPMs but the torque drops off that fast.
So running it somewhere in the 14,000 to maybe 15,000 rpms range should be about right. I think going up to and over 16,000 rpms won't gain anything. That is when in unloads in the air of course. At the time when we were doing pattern with .60 engines, most everyone was running 11x7 to 11x8 props. The Rossi engines were really zipping along too. Later when 4 stroke engines became more and more popular the .60 engines wound up being tuned to turn larger props, more like a 4 stroke engine down around the 10,000 or less rpms range. but the Rossi's do not like being lugged down like that. If you have a draggy kind of plane running larger props like a 12x7 or maybe a 13x6 (well broken in engine) maybe would work too.

14Glen

Hello,
What is the best way to hold the (header) pipe onto the engine? twisted wire?

lfinney

My Feedback: (44)

the header comes with a ring and a soft spring, the ring slides over the header, it has two small holes that the spring attaches to. the spring goes around the cylinder fins..

PhilippeS

I have been lucky to find a brand new Rossi 60, in box, unopened and, indeed, unused.
I have two Kadets with .95 OS engines, a Decathlon with a 43.3cc. What plane do you recommand for this engine ?

jaka54

Hanno Prettner Curare or Magic! Both F3A pattern planes.

PhilippeS

Thanks a lot. But as you may see, I am not very advanced in my flying. I am an young old pilot. Is there anything less acrobatic than the Curare or the Magic ? Thanks a lot for your help.

jaka54

Is it a side exhaust Rossi engine?

PhilippeS

Yes. There is an attachment which goes on the side, then a long exhaust

ev2driver

Sorry for late reply,

the engine if is a 5 port engine, is the most powerful. It will come to life with a pipe, and usually small props (11x7 - 11x8).
I suppose is an ABC version, so my suggestion is a proper breack-in according instruction, Start to use 18-20 % oil (better 100% castor for the initial run), then you can reduce oil in the 16% area, still with some castor in it . Usually NO NITRO is better (no corrosion , no overheat). If you have some critical installation that affect proper fuel flow, you can use 5% max of nitro.
Somebody use 13% oil with success, but now they are very valuable engines, and no more spares are available, so I would keep a liltte more safe at minimum 16% oil with some castor in it , as is useful also to prevent corrosion of the bearing (the original ones are special Swiss made, you cannot find easily, eventually std will work, but not as good).
This engine will work also with std muffler , but you have to adapt some from MAC's or Jetts, and on some slower plane could be good enough.

Paolo