OK guys - I'll start a fight! I'm looking for experiences of users of Moki 1.80's and OS 1.60's in deciding which to replace my Saito 180 in my Sig Extra 300XS (about 14 lbs.). The Extra is to see lots of time in practicing IMAC with low emphasis on 3D (some 3D ability would be nice however but I have other A/C for that). No complaint with the Saito's running - just want a bit more bite with less fuel. I see that the Moki's are running on low and no nitro - how about the OS? Engines' performance and prop sizes in similar size and use airplanes only would be appreciated.

Just my .02 I've flown my Sig 1/4 Extra with Saito 1.80 and thought it was ok. The guy that had the airplane and Saito before me used this combo for IMAC when he first started. Although I'm selling the airplane if I did it again I would replace the Saito and put the OS 1.60FX on it.

I currently running a O.S. 1.60 FX on my GS540 edge which is about 13 lbs and like it alot more. I tried the Saito out on this airplane and took it off as quick as I could land. The OS takes cheaper fuel and I swing a 20 x 6 prop on it and stays cool compared to my Saito 1.80.

No info on the MOKI but I did know a guy that flew his Sig 1/4 Extra with the 2.10 and can you say fuel sucking Fun! Just my thought on your question.

AKWendt

The Moki 210 ia a bunch of motor for that plane but it would never be any where under powered. I had an OS 160 swing a Pro Zinger 18/6 and the poer to weight was damn good but there were a few times I wished for more power. The Moki 210 is a real beast and would be an fantasic combo but the Moki is pretty hard on the fuel consuption but there is plenty room in the tank compartment for a larger tank.

My Moki 180 goes through a 10 oz tank in ten minutes.
Uses 0% nitro Castor oil based fuel. Throttles and idles well.

Amount power is just stupid! The popwash tore out some of the plants in my garden flowerbed when i was running it in.
As with all big engines, you need a good silencer. The first silencer i got for it made it sound close to 82 db at half throttle!

I have an OS BGX (2.13) 35cc in a 14lb. 28% Extra 300s. It's one of the best engine/airframe combinations I have ever had. It swings an APC 20X8 at 9K RPM on the ground with a Slimline Pitts muffler and is totally reliable. The only downside is the same as the Moki's. It drinks a 24 oz tank right at the 10 minute mark. But hey, all big glow engines drink lots of fuel.

John

Ahhh,
I have been waiting for the "I ve ripped up the flowerbed test" to come up on the 160 / moki 180 debate..Thats it for me.
Im selling my 160 turning 8,600 rpm w/mejzlix 18/8 prop on 7% nitro and 12% oil. Just so I can rip up my neighbors flowers with a moki. Thank for the info.

FOR SALE: O.S. 160 Cheap



Scott

As an aside, I thought you might like to know about this place that sells Moki engines cheap:

http://www.model-engine-sales.com

I have seen the Moki's starting to show up at the flying more and more each month and I have not heard one bad thing about them. I think it is a good alternative over the OS 1.60 and the BGX but the oS BGX is still a damn good motor putting out a lot of power but it along with all OS engines it is just priced to high when compared to Moki. I am just glad we now have more to choose from.
My flying buddy has a Moki 1.35 in a Carl Goldberg Jungmann and it is pure pleasure to fly and the power is outstanding. I also like the 0% fuel it needs which sure cuts down on the dollars per flight as compared to my Saito 180.

Thanks for the link Jim. That may have just pushed me over to the Moki. MESC's price for the 1.80 equals Tower's best deal (with discounts) on the OS 1.60. Have you or anyone reading this thread had dealings with MESC?

I'm still a big fan of the Saito's - got the 1.80 in the Extra and a .91 in a H9 Funtana40. Love the sound and ease of handling, both are great running engines, I just need more power for the long vertical stuff. Considered gas but I just don't think the Sig Extra's wing area needs another pound of weight. Its flight characteristics are right on at its current loading with the Saito.

What brand of fuel are you guys running in the Mokis? I sure like the prospect of running of 0% nitro. With my current routines on the Saito I'm burning 32 oz. of 15% for a safe 8 min. flight - almost a gallon per session - ouch!

I also have been reading about regulators and pumps on all these engines (got a Kline on the Saito 180) - what are you having good results with?