I am thinking of putting an Evolution 26GT gas on a Hanger 9 cap 232 25%.
Many with experience seem to prefer the Saito 180, which is not gas.

The Evolution has a full HP more power and weighs only 2 oz more and the price is comparable.

To me it looks like a no-brainer! Anyone think I am missing something impt.? If so, what might it be?

Anyone out there with exp. using the Evolution who might speak to the reliability, ease of adjustment and ease of starting issues???

Bob

The Saito 180 is a great engine. I've had several of them.....just be prepared to burn 2oz a minute or aprox 7-8 flights per gallon.....I now fly gassers........

I have a MVVS 26cc which is where the EVO 26cc came from. It is a very easy starting engine and runs like a champ but by the time you add the ignition system and battery it is a lot more than 2 ozs. heavier than a Saito 180. Mine weighs 42 ozs. without exhaust and 60 ozs. with the header & tuned pipe. Now you can use a Pitts type muffler and save some weight but although I have never run mine without a pipe I understand that a muffler lowers the power output considerable.

I have mine in a 13 lb. Balsa Nova 120 and performance is OK but in order to be really spectacular I would need to shed 2 lbs. I also have an OS 160 glow which is about equal to the Saito 180 and it is a 1 lb. lighter than the MVVS and will turn the same prop 500 more rpm's than the MVVS. Take the tuned pipe off the MVVS and the difference would be even greater. As I said the MVVS is a great little engine but unless you just have to save the fuel $$$'s the Saito 180 or OS 160 would be the way to go.

I am looking for a plane with an all up weight ( including engine and pipe ) of 10 - 11 lbs. Then I think the little gasser would be impressive.

The H9 Funtana 90 or the Showtime -both are honsetly spectacularperformers with the 26 andpipe -weight is right around 10 lbs -
I have done both and 3DFlyer includes article on both
Mycurrent Funtana weighs 9.5 lbs and will do any of th 3D stuf -easily and very quickly .

But without the extra weight of the tuned pipe, when running a Pitts type of muffler, you wouldn't need all of the power that the pipe developed. True? A really good Pitts muffler (if one exists) might actually offer the same over all power to weight ratio, even though lacking a bit in rpm or large prop pulling power. I am curious as to how much of a difference there is when all is considered.

Ed - the in cowl setup will never balance out the additional power
my under 8 ounce setup with the c fpipe is not cheap -but the power increase is easily 25% over any in cowl setup -not 25% more rpm --25% more power.
if you have a 9 lb plane you may be very happy with vertical pull
and if 3D hanging and vertical pull forever isn't your bag - 10-11 lbs will be fine

My question is, would the evo 26cc be a good match for a Goldberg Ultimate 100-300? Please give me input as I would like
to take my planes all to gassers.
Thanks
Rich

I had a Goldberg Ultimate / OS 1.08 for 10 years and I would not want anymore upfront weight than the 1.08. The 26CC gasser I now have would outweigh the 1.08 by at least 1 lb. with a Pitts muffler on it more with the pipe. I don't think the Goldberg Ultimate is the plane for a gasser. My .02 worth.

It would probably work but likely would be too heavy to really perform and land nicely. A Dave Patrick Ultimate might be a good choice with that engine. I have the MVVS 26 in a 202 and it performs and runs good. I would say it is pretty close to my Saito 180s but about .15 to .20 a flight for the MVVS/Evo vs 2.50 a flight makes it a lot cheaper to fly. For the Goldberg Ultimate many like to put a YS 110-120, great performance with that. I have a YS 140 in mine and gravity is not an issue. Performs much better than the Saito 180. The gas engine with ignition and a battery will weigh more but the best way to mitigate that is to reduce your tank size. Liquid is heavy and reducing 6-8 fliud ounces will make up for a lot of the additional weight of the engine.

This is true but as the flight progresses the weight advantage becomes less & less. I have 26cc, 40cc & 50cc gassers and am finding it very difficult to see any advantages to gas under 50cc other than somewhat cheaper to operate and if I was that strapped for cash I would find another hobby. Again my .02 worth.

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No one should expect a gas engine to come close to the high power and light weight of an equivalently sized glow engine under 35cc's. It probably won't happen in our lifetimes.

In many applications, the difference in power and weight is unimportant, but not so with 3D flying. Fortunately, for that type of flying, I pull out my little electric powered models and have a ball. That's more my speed, these days.

No goo to wipe off the plane. Nothing like spending the day flying, and wiping you plane down in 30 seconds. That right there is enough reason to switch to gas if you can get the performance you like.

Thanks for all the feed back. I think I will stick my YS 91 in the Ultimate and fly it that way. I do have a CMP Extra 300 120 to 140 which I think I will go gas. Maybe a evo 26 or the fuji 32. I know the fuji is a little bit heavier but I do not plan on any 3D just you basic flying and aerobatics. It should work.
Rich

Just visit the thread on the MVVS 26cc and see how much trouble MANY of us are having with "black goo" on our planes. I have never seen anything like it, the covering on the stab of my plane is completely discolored from it and there is no way to get it off. I have several glow planes as well as several gassers and with the proper exhaust the glow planes are no harder to clean up than the gassers. I have a pattern ship with a YS 140 / Hatori pipe that you can fly all day and not even have to clean it. Cleaner planes with a gasser is a myth if you do it right.

The black goo on the MVVS 26 should disappear once it's broke it. It's normal for this to happen while the rings are breaking in.

No doubt a glow engine with full length pipe is going to stay clean.

A glow engine has to put out more "goo" than a gasser. You're talking 20% oil for the glow stuff and 2% for gasoline/oil mix. Where it ends up is due to the exhaust system......

1 ) - That's what they tell me but I have over 5 gals. of fuel through that little engine and there is no sign of it letting up. I'm going to give it another try this season but if it doesn't straighten up someone is going to get a good deal.


2 ) -This is true but it is what you do with the GOO that's important.

Don't get me wrong I'm enjoying MOST of my gassers but I find in the smaller size - under 50cc - the glow engines are less trouble, stink less, start easier, are much cheaper to buy and maintain and power for power a lot lighter. Yes the fuel is more expensive but as I said before I can afford the fuel and if I couldn't I find another hobby.

I don't expect ANYONE to agree with me but this is my .02 worth.

the piped setup I am using -leaves speks of black -always - I squirt a little gas on a rag -it wipes off
as for power - what is being missed by some here is that the ignition engine and the pumper carb keep the engine working thru all kinds of power on and low idle flailing about -
at 2 lbs with 7 ozs added for ignition and small battery -it is -for me a far better setup than any comparable weight glow
My piped ST2300's would run with it-and then some - but needed 18-ozs fuel(25% nitro 20% oil) They beat any of the Moki / OS etc setups for power and weight
But I need 10 ozs fuel gas - and this makes total weight about a wash. and starting is far easier and more simple -- switch on - flip - fly -
I am right on 9.5 lbs as shown.
Nitro /alky fuels will always beat gasoline for max power ----if the setups are other wise equal - both piped correctly etc.. The hooker is more than double the amount of fuel is needed .

I don't know if its any safer than gas but I find spray brake cleaner does a good job of cleaning off the black specs

Black Specks I could deal with but this is a whooooole lot more that specks. If you hold your hand behind the pipe at full throttle it will completely blacken your palm in 10 seconds and no matter what you try to remove it with it will take days just to wear off. It has gotten a BIT better over time ( 5+ gals now ) but not much. Tried several different oils ( including the recommended Mobil ) at different mixtures and have finally settled on Amsoil @ 50:1 the same as my other gassers.

My history with gas engines has been poor. My first gasser a Quadra 42 has been sitting in a box for 15 years because it is too heavy and underpowered for the type of planes I fly. I have a Brison 2.4 which gave me 4 years of fits and after 2 trips to Texas at a cost of about $400.00 Cdn. I finally in desperation sent it to C & H ignitions and they got it working for me, it works well now. Now the problems I'm having with the MVVS. I have a NIB Taurus 52 that I hope will be my Saviour. If not I'm done with gas.

Sorry to bend an ear but I'm a bit frustrated. Glow engines on the other hand other than a Magnum .45 I had 20 years ago have been without incident.

Don M,

I can see why you're frustrated when it comes to gas engines.[>:] The only time I've seen that much oil come out of a gasser is when it's either being broke in, or the needles are set too rich. I can fly my DA50 with stock muffler or G62 with B&B muffler at 50:1 for 7-15 minute flights, and just have a few spots of oil on the side of fuselage and tail feathers. I do get some straight oil on the wing from the carb on the G62 plane, but all this wipes off with just a dry blue shop towel. I just got done breaking in the G62, and it did put out the black crap for 2 1/2 gallons, now it's just unburned oil.....