It has an impecable reputation with some. Others have problems. The question as I see it - Is the problem with the owner or the engine? I think I know the answer but my better judgement says "keep it to yourself Jezmo".

The 26GT is a MVVS and not their own design.

hay jbarnes,
What wooden props will be best all around size, for the Evo 26 ?

What would you recomend for my first flights ?

I used a wood symitar style prop on my G90 with good results. I'm scared to use composit or plastic props...and I know how to fine balance my wood props.

I got my P-6E in two day's ago...and what a beautiful model. It's huge, and by far my largest r/c model.

Soft Landings always,
Bobby of Maui

Got my first two flights in today with my evolution 26gt2 its running great and never missed a beat . It rely flys my sig cap 231 Great !!!!


I'm using a 16x8 apc prop !! with mobil 2t synthetic oil mixed at 32:1

heard the evolution oil was no good and this stuff was the ticket!!!

16x10, 16x12, 17x10, 18x6, any prop that lets rpm settle at 8000 static or more

To pe reivers and josh*********,
OK thanks for the information. I will be buying several prop sizes and trying them out. I will try to find the prop that gives me the porper RPM.
Thanks and soft landings always,
Bobby of Maui

I use 17/6 at my 5400' altitude.

I have been using either Pennsoil air cooled two stroke oil or Zenoah oil which is 100% synthetic in my SuperTigre 51 project. I have to run it at 15:1 fuel to oil because it has no bearings on the rod. About a week ago I bought a quart of Mobil 2T synthetic and mixed up a quart for my little ST. With over 15 flights on Pennz/Zenoah the plug looked virtually like new. (Just a little dark brown color on the center elec.) The top of the piston was as pretty and shiny as the day it was new. I have run the Mobil 2T for a total of four flights now and the plug has a noticeable amount of hard jet black carbon of the ground electrode. The center elec. is still brown as before. The troubling part to me is the piston now has several areas completely covered by black carbon. I think I am going back to the Zenoah oil. Maybe it's doing that because I am running the ratio at 15:1 but it sure ran clean with the Zenoah oil. (Ran very clean on the Pennz as well.)

I just mentioned this so you could watch yours and see if you notice any unusual carbon buildup. Good luck with the EVO.

I have never been more dissapointed in a motor than the Evolution 26GTII. A bear to start and will not turn up over 7000 rpm with any prop.

Not an expert but I have a feeling that there is a reason for it besides the motor. Not saving it's your fault but without some more info, it's hard to point at the motor when so many others have much better results.

What oil / ratio are you running? How have you tuned the motor? What prop make / size? Altitude? Muffler?

no your not wrong. the gtII IS A COMPLETE PIECE OF CRAP. repeated problems across the board again and again by experienced users. look for a string of people saying my zenoahs junk,you wont find such repeated claims on zenoahs. not meaning to insult anyone, but dont waste your money.

The MVVS (or evolution) 26cc is the most powerful engine in it's class, and as such more demanding on it's users, as well as a bit more prone to failures. The comments on RCU do not reflect the real world, since satisfied users do not complain here.
MVVS took all complaints very seriously, and redesigned the engine without any power sacrifice or weight penalty.
I consider it not very fair to bash a brand engine just because some users seem to have problems with it, and just because they shout hard.
I have had a few users complaining, which could be solved by the twist of a srew driver. I also had some serious complaints, which were properly addressed by the factory, eventually leading to the abovementioned redesign. These issues, though present, did not account for an unacceptable percentage of users. The redesign should reduce this even further, whilst keeping the engine in the top of power to weight ratio engines that makes gas engines of this small capacity suitable for 3D flight.

llets get real here. the engine has no qualities that should be expected from a 450.00 engine. it looks like and infact is a motor born to run glow. its a conversion and a poor quality excuse from any standpoint. i have 1st hand experience with this awful engine not just somthing i heard. if you think its great buy it. if you have any experience with gas motors of quality design and performance you would see the inferior ability it has. as far as the most power in its class, thats a joke!! it has low power and poor usability. i think its just fair that people know what to expect when they buy this junk.

"The MVVS (or evolution) 26cc is the most powerful engine in it's class, and as such more demanding on it's users, as well as a bit more prone to failures. The comments on RCU do not reflect the real world, since satisfied users do not complain here."

I have a 26GT (older version of the GT2) and I love it. runs great. just like ANY other brand of engines/radio/whatever, you can always find someone that "will never own another one".

ok gents, please keep the attitudes to a minimum.

The reality is there are probably more satisfied users than otherwise and that's ok either way. Not every engine from every manufacturer is going to work no matter what so lets lets those who have had a negative exp speak their peace and the others to move on. I for one have one on the way and the 2 my friend own run like clockwork

not had any issues with my MVVS 26, i had to make slight adjustments to get it to run right, but you should expect to do that to any engine new out of the box.
got ample power in my Showtime 90, i would recommend it to anyone

ok lets talk 26cc power. take zenoah g26pum case and add 12mm wide bearing to the front where the seal was on the marine motors which use only one bearing in front. its the same case for the plane motors which use 2-8mm bearings. machine hub 4 mm for 12mm bearing clearance and extra support. zenoah chung yang full circle stuffed crank for 26cc boats. red coil with fulley hand ported 26puh heli cylinder on .012 copper base gasket. zero drag seal in rear and boost bottle for cars. g26 marine piston with .8mm ring. walbro ported 257 carb. the outward appearance of the motor is stock except for the coil. the last on took 19hrs of sanding, grinding ,polishing but turned a 15x8 k prop at 16,400 rpm reliably. this motor was lost in crashbut working on a new one with g 270 car cylinder which has better ports and will use 29cc stroker crank. will out perform any 26 by a wide margin if you know how to do it. theres nothing more workable then a zenoah

So, you're biased...

Hmmm...
11 hp at 16400 from a 26cc engine (thats 420 horses per liter) still looks like a standard typical airplane engine to me, allowable on all airfields, albeit a bit expensive when done.

To be honest, I think [link=http://tech.flygsw.org/evolution26review.htm]this report[/link] is more reliable and unbiased.

I have three of these motors and really like them for one main reason, they have a small footprint that allows them to be placed in just about any plane that will accept a 120 four stroke. My opinion is that these motors are reliable and start easily but have two weak points. The chokes are poorly designed (I understand this is fixed in the GX version) and the ignitions prone to failure (two of mine have failed within a 24 month period). Horizon will not warrant the ignitions after the first few months. Not sure if the ignition units have been upgraded, my newest 26 is the GT2.

who said it has 11hp if you cant believe it then dont-who cares. i had a gms 120 with a pitts that turned the same prop 16,000. it must have 10 hp right. my post is for intelligent people. as far as snip -do you know how to modify engines,or just look down on those who do.

thought i might add that the helicopter cylinder is the same in apearence as the standard g26 air cylinder. motors are made more powerful from the inside. the smallblock chevy with 700hp looks the same as the 200hp version in plain paint. will put on youtube when the next motor is complete for those interested.

I don't know who you are, but I do know who Pe is. There's not a more authoritive voice on this group (especially since I've not heard from Ralph in forever) then Pe and he know's his stuff. For me, No - I do not modift engines but I did stay in a holiday inn last night

the modifications ralph does is improvments in ignition design and he does a great job. the type of performance modifications possible is what i explore. because you never heard of me does not mean im not an authority as well.