RCU Forums - EVOLUTION 58

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- - EVOLUTION 58 (https://www.rcuniverse.com/forum/gas-engines-142/3862661-evolution-58-a.html)

OK guys, Reading on this forum and some others, it is very easy to see the all the gas engines(in the 50 to 60 sized range) are having some issues. Some are due to actual mechanical problems, some are due to lack of understanding about a certain engine, etc.

At this point, DA, and Taurus seem to be temporarily our of stock. Brison is at best touchy with its ownership change.

My question to you all is......Is ANYONE out there having success with the EVO 58/MVVS 58? I have to believe that there are more than two or three guys that have put this engine into a 50 sized plane with at least SOME success.

What do you say???

Thanks,

John

I got a bad one and I still like it. I can't wait for Horizon to finish repairing it so I can take it out and fly my plane.

Hi John,
I am installing a MVVS 58 in a 90" Edge 540T with a 3204 canister and I am waiting for a KS header to install the canister behind te engine, with the original MVVS header it is impossible.

On the second tank of fuel in the test stand I got idles of 1200 rpm and fast response to 6500 rpm at full throttle with a Bambula 24x8.

I'll tell you when I fly the Edge.

BR

Jesus

I have an evolution 58 in my 30 % yak and it is a beastly amount of power...tons more power than the zdz 50 i had in there.

Somewhere in this forum there is a link to a website/video of a MVVS 58 demo'd. It was so impressive, I want one and don't even have a need for it. But the idle was so smooth I thought it was a four stroke. It transitioned great and I have never seen any gas airplane engine run as well. If I knew where to tell you to look I would but hopefully, you will find this demo. Naturally, keeping in mind it is an advertisement for MVVS and they obviously would not show a video that didn't show their engine in it's best light.

But I'm sold.

Larry

Hi John,

I have 58 ccm in Edge 540 260 cm and my friend has 116 and 45. I hope i can recommend you this engines.
You can see same informations on my web .

Guys,

Thanks a bunch for the quick responses. I do appreciate them!!

John

Break it in with a petroleum based oil and not the one that came with it... Use Penzoil Air Cool 2-stroke.
The engines are totally bullet proof once broken in, can swing a 26x10 @ 6000 rpm,
Best prop for 3-d on them is a 23x10 bolly, spooling to 7400 rpm VERY quickly.
For imac type flying a 24x10 would be really good.

Hi guys:

EVOLUTION is not the same than EVO, that is another company who make high quality gas engines.

www.evo-engines.com

Thanks

I was aware of the difference when I responded but assumed the originator was talking about the Evolution 58.

Quote:

Break it in with a petroleum based oil and not the one that came with it... Use Penzoil Air Cool 2-stroke.

Which goes against what the manufacturer and designer says. They even include the oil to make sure you use it[>:]

Mine is great just wish the weather was better to fly it some more. 24/10 on a WH Ultimate

Quote:

ORIGINAL: RCNUTKNOY

OK guys, Reading on this forum and some others, it is very easy to see the all the gas engines(in the 50 to 60 sized range) are having some issues. Some are due to actual mechanical problems, some are due to lack of understanding about a certain engine, etc.

At this point, DA, and Taurus seem to be temporarily our of stock. Brison is at best touchy with its ownership change.

My question to you all is......Is ANYONE out there having success with the EVO 58/MVVS 58? I have to believe that there are more than two or three guys that have put this engine into a 50 sized plane with at least SOME success.

What do you say???

Thanks,

John

John,
I would appreciate that you change the title name on this Thread to Evolution instead of EVO as EVO is the line of engine I'm importing from Spain and they are not the same engines at all

These are EVO

Roger

Video of MVVS 58 IRS (not ProSport

http://www.justengines.unseen.org/mv...vs58_large.wmv

I'm putting a Prosport in a 85" QQ Yak. Should be absolutely ballistic :)

Angus

Subject name change done as requested. No offense meant or suggested. It is really heartening to see the positive response about this engine.

Thanks again,

John

RE: EVOLUTION 58

I have mvvs 58 in my wild hare 300 xl. Great combo more power than yuo needbut a realiable engine.

RE: EVOLUTION 58

I recently spoke to another manufacturer about my 100 and the Evolution came up, they were impressed by the power and porting, not impressed with the bearing type but overall good comments.

RE: EVOLUTION 58

I am running the Evolution 58gx in my 27% BME Oracle Pitts :D and am VERY happy with it. The Pitts weighs 19# and has unlimited vert swinging a 24x8 (7000rpm) and 24x10 (6800rpm) on 30:1 break-in mix running rich enough to coat the landing gear and left wing. I'll let you know how things go once I start leaning it a bit.

[link=http://scooterscum.com/gallery/albums/album35/e100_5193.jpg]http://scooterscum.com/gallery/album...5193.thumb.jpg[/link]

RE: EVOLUTION 58

Ben
What was wrong with your 58, Mine doesnt seem to want to pump fuel.

RE: EVOLUTION 58

Apparently it had a bad crankshaft. Is your vent line open?

RE: EVOLUTION 58

A couple of issues have recently come to light regarding the EVO 58 from our service department at Horizon this past week.

1. There are occasional instances where drawing fuel to the carb is very difficult, even with the choke closed. We have discovered that with some of the walbro carbs included with our 58cc engines, the sprung loaded automatic mixture control needle under the vented plate (opposite the pumper side of the carb) will occasionally stick, almost like there is a preservative used in the manufacture of the carb. If you attach a clean piece of fuel tubing to the aluminum 90 degree elbow and blow lightly into this chamber, you will free the sticky needle and you should see fuel readily move through the carb. This usually only needs to be done once.

2. The one common cause of apparent low power output is a hi-side needle setting that is too lean. What we have discovered is that while the base line settings for the high side (1 turn, 10 minutes, or not quite 1-1/4 turn) were correct when we first introduced the engine and published the manual, it does seem that the proper new baseline setting for the high side is 1 turn 45 minutes (or 1-3/4 turn) from closed. This will put both needles at the same spot to start the engine and adjust from there. We are in the process of updating our manuals to correct the error.

The two engines under debate are indeed identical engines, as we at Horizon have been boasting all along. You should easily see numbers in the 64-6600 rpm range with quite a few different aftermarket mufflers. With the cannisters we did indeed test the EVO 58 at 6900 rpm on a Mejzlik 24 X 10 prop. The actual best torque curve for the engine is in the 6100-6400 rpm range, yielding a very flat response. For performance that requires the maximum torque (not necessarily the maximum horsepower) prop your engine for this range and we think you will be astounded by the hovering power available to you. We actually were very happy with a wooden 26 X 8 prop turning in the 6300rpm range on one of our 33% Edge 540's Awesome performance.

If anyone is still having issues such as very low power output after trying the above suggestions, please don't hesitate to contact our service department and/or send in your engine for evaluation. That is what our warranty is out there for. We are ultimately interested in your long term satisfaction with each of our products.

Pete Bergstrom
Category Manager
JR Radios and Engines
Horizon Hobby Inc.

RE: EVOLUTION 58

Well maybe that will put it to rest.
Sure glad I ignored the needle settings as they looked suspicious and wound mine out to 1 1/2 to first start it.
Thanks for the update.

RE: EVOLUTION 58

Quote:

ORIGINAL: Pete Bergstrom

A couple of issues have recently come to light regarding the EVO 58 from our service department at Horizon this past week.

1. There are occasional instances where drawing fuel to the carb is very difficult, even with the choke closed. We have discovered that with some of the walbro carbs included with our 58cc engines, the sprung loaded automatic mixture control needle under the vented plate (opposite the pumper side of the carb) will occasionally stick, almost like there is a preservative used in the manufacture of the carb. If you attach a clean piece of fuel tubing to the aluminum 90 degree elbow and blow lightly into this chamber, you will free the sticky needle and you should see fuel readily move through the carb. This usually only needs to be done once.

2. The one common cause of apparent low power output is a hi-side needle setting that is too lean. What we have discovered is that while the base line settings for the high side (1 turn, 10 minutes, or not quite 1-1/4 turn) were correct when we first introduced the engine and published the manual, it does seem that the proper new baseline setting for the high side is 1 turn 45 minutes (or 1-3/4 turn) from closed. This will put both needles at the same spot to start the engine and adjust from there. We are in the process of updating our manuals to correct the error.

The two engines under debate are indeed identical engines, as we at Horizon have been boasting all along. You should easily see numbers in the 64-6600 rpm range with quite a few different aftermarket mufflers. With the cannisters we did indeed test the EVO 58 at 6900 rpm on a Mejzlik 24 X 10 prop. The actual best torque curve for the engine is in the 6100-6400 rpm range, yielding a very flat response. For performance that requires the maximum torque (not necessarily the maximum horsepower) prop your engine for this range and we think you will be astounded by the hovering power available to you. We actually were very happy with a wooden 26 X 8 prop turning in the 6300rpm range on one of our 33% Edge 540's Awesome performance.

If anyone is still having issues such as very low power output after trying the above suggestions, please don't hesitate to contact our service department and/or send in your engine for evaluation. That is what our warranty is out there for. We are ultimately interested in your long term satisfaction with each of our products.

Pete Bergstrom
Category Manager
JR Radios and Engines
Horizon Hobby Inc.

Mr. Bergstrom, please refer to these engines as Evolution and not EVO, as there will be confusion. Our line of engines are the EVO and yours is the Evolution.

Thank you
Regards
Roger

RE: EVOLUTION 58

Some of us have been trying for many years to educate people about "factory" needle settings...THEY CAN NOT POSSIBLY ANTICIPATE THE CONDITIONS UNDER WHICH EVERY ENGINE WILL OPERATE..PERIOD, END OF STORY..
Gassers are NOT plug and play computers...If you will learn to set your carb yourself and not rely on someone else's guess, you will be better off..
YOU WILL NOT DAMAGE YOUR ENGINE STARTING IT OFF WITH THE NEEDLES 2 TURNS OUT AND ADJUSTING IT FROM THERE....

RE: EVOLUTION 58

Yesterday a friend of mine at the field started his 58gx in a lanier 330, and it flew just about to finish its braekin just flying it normally aroud the field an occional loop but basic straight flite al of a sudden i heard a funny noise from the engine and told him to land it quick on approche engine koncked out. on inspeccion we found out that the ring had broken and also the piston he told me he was useing a 30:1 mix with the oil that came with the engine. any insight on this:eek: