Need a motor for a 100cc yak. So what the best engine out there? 100 DA, 106 3W or the BME extreme? Maybe there's others as I've been out of the hobby for a while.


TIA,
Shaun

I can only speak to the DA100. Mine is on a GP 35% Cap580 and it runs perfect, very powerful. I use premium gas, BelRay MC-1 @50:1. I am not a 3D flyer but a friend who is has flown my plane and it will do Harriers, Hovers or anything you ask it and has unlimited vertical.

Larry

In that size range, there are plenty to choose from. DA, BME, 3W, ZDZ, Kroma, Mintor 3M. Everyone seems to agree that DA as a company has a history of taking care of you best if something goes wrong with the motor - engine's fault or your screwup. I like the power of my 3W-106, it's a little stronger than the DA. The ZDZ is lighter, and the BME is the lightest - haven't seen any of the latest ones run. A friend has the Mintor 3M, looks beautiful, but don't know how it's going to run or how the company will deal with service - they say it has a lifetime warranty. Kroma, haven't seen one.

Well it all depends on what you can afford. For me the LS-100 is the best, for the price of a 3W with mufflers, I've got a LS-100 in a Lanier Yak 54 87inch with all digital servos, the only thing not in the price was my 9 CAP Super TX and RX.

http://www.rcuniverse.com/market/item.cfm?itemId=253836

What is a LS 100????

The link I put in my last post takes you to the ad for them.

I got one of the first in the country, mine may be the first to fly. I'm taching 6000rpm with a 26x10, but the engine isn't broken in yet, I've only got one tank 20 oz through it in the backyard, then one flight yesterday before it started snowing. So far I'm very pleased with it, you can't beat the price $775 for the engine with mufflers and electronic igintion, and great service. I spoke with LS and he said they might go to a bigger carb for higher peak HP, but I'm happy now it's pulling my aircraft stooges out of the ground as it is.

http://www.rcuniverse.com/market/item.cfm?itemId=253836

Yep, I checked out the website. I wanted to hear from people who have flown one. Thanks for the info.

I have a First Place Engines 111. Just another engine to check out. You have alot of options of good engines.

Willie. B

Lots of good choices out there. Hard to ignore the BME 115, strongest and lightest of them all.

Seems odd that you would respond to a thread called "Best 100cc Class Engine?" and recommend an engine you've run less than 30 ounces of fuel through and that no one (in this country) has ever flown...let alone an engine which the importer conceeds doesn't likely have the proper carburettor.

Additionally, the weakest of the previously mentioned engines routinely turns a 28x10 at 6,300+ RPM.

The price is right though. Why not start a thread about the engine and tell us about it there as you break it in and get some hours on it. I'd subscribe and read with intrest.

Good luck!

Let's see, 15 more cc's(13.3% greater volume), and about 2 lbs lighter than a common 100 cc engine. It shouldn't take a PHD in math to figure that one out.

Your right, I guess it may not qualify as THE BEST, I should have made it more clear, the best part is based on PRICE. I can't afford a 3W or DA both are better engines no doubt, those are BMWs and Cadillac's the LS-100 is more a Chevy, (I can't think of a Chinese car :^( ).

My opinion is also based on the LS-50 that I have, which I would take over a DA-50r. The Yak I bought had a DA-50r in it, I like my LS-50 better, it's very smooth and has never missed a beat. The DA-50r MAY be more powerful, I don't know though I suspect it is, but pure power isn't everything to ME, others it might be. I like the smoothness, the packaging, it'll fit inside of cowls much better than a big single, and the reliability, the LS-100 seems to have the same attributes.

I started a thread, but since then it's been blowing 20mph and snowing or raining, I did get out in the backyard for a tank or two. My engine is still breaking in it held 5800 rpm the day I flew it ,yesterday it could hold 6000 rpm I may get a bigger carb for it in the future but for now it has all the power I need, the Yak calls for up to an 80cc.

I'll check out the thread. Thanks and good luck!

Soarrich, Please keep us posted, as many of us like to hear about new engines and the performance.

I can't say anything about how it runs because I haven't run mine yet. I will say I have only heard great things about it. I have a BME 115 in my QQ yak. I just weighed the whole setup ready to fly for a total weight of 24lbs. 12oz. This from an engine that is said to turn a 30x10 at 6200 on cans. I don't see how this engine could be over looked?

Throwing in my 2 cents. I have really never had a bad engine from any of the top manufacturers. There are many good 100cc class engines, at this time it is really hard not to choose the BME 115. Lighter than the rest and more power to boot. Balancing in not a problem if proper location of components are used. It will spin a Mejz 28x10 at 6800 give or take on stock mufflers once run in.

I run a BME in my CAP232 and love it. Lots of power and other than the normal maintenance, no problems. Pretty hard to go wrong with those guys.

This is one of the most sensible answers I've read in a thread of this type. Often these threads dissolve into love fests and bash fests...usually DA vs 3W and more recently BME.

For what it's worth...I agree that they're all great motors. Some may have a little more power (which you may or may not need depending on altitude, weight of airframe, flying style, etc.) while others may have a nearly unimpeachable service record..each has a perceived strength. So here's my dorky recommendation: If you are an experienced GS gasser then you likely already have a preference...so I'm guessing that you are still testing the waters...assuming this is true, I'll recommend using the brand of engine that the most trusted and experienced flyers at your club use. My reasoning is that if you have difficulties or questions - and these questions will come up - you will have knowledgable answers to your questions and concerns. So, If your field has a bunch of 3W devotees, and they are not having trouble with those engines...then get a 3W...same for BME or DA.

From my experience, the DA-100 and 150 engines are very reliable (as are most others) and offer really impressive service (cheap and fast service.) For instance, when I bought my second DA-100, I got it used from a nice kid in Colorado. Well, the brown shirt brigade (UPS) must have used a catapult to move the box from Co to Ca because the engine arrived in a box that was beat-up bad. It must have been dropped from at least waist-high. The prop adapter and all the prop bolts were bent...it was really something. So, dejectedly, I packed it up and sent it off to DA. They fixed everything, "mic'd" the crankshaft, and test ran the engine...recording the RPMs and checking the carb. They also gave me the complete history of the engine (it is a very low serial number engine and was sent in for new jugs and bearings 2 years ago.) My engine was given a clean bill of health and they charged me $78.00 including shipping. I was without my engine for about 10 days total including UPS shipping. I couldn't be happier. Others may do the same, and obviously I am not privy to every sevice call on every engine...but I have not heard of another manufacturer or importer which routinely offers this kind of service to the layman.

To me this is very valuable. Does a BME 115 have more power? Yes... Do some of the 3W's have handsome anodized jugs? Yes... Does the ZDZ....well, you get the idea.

DA also generously sponsors contests either directly (Tucson Shootout) or by donating prizes at some IMAC events (at least some of the ones I've been to.) I value this too. In fairness, I have also seen 3W prizes as well from Bobby @ Cactus Aviation...in fact I won a nice gift certificate from them.

Anyway, these are all great engines...I guess it's a BMW vs Lexus vs Mercedes question.

Whichever you choose...good luck!

Robert

kolarshooter--I couldn't agree more.

Didn't ask anyone at our club as I' was looking for a somewhat unbiased opinion lol. Any of these motors is going to be more than enough power for a Aeroworks Yak. I had a Lanier Extra 300 with a Quadra 100 in it...now that's heavy but flew great, more than enough power. I'm looking for something I don't have to worry about stopping 5' off the deck in a hover. Long time ago I bought a Rossi 1.05 for a new DF Mig 29. I'd put 1000's of flights on OS91's, but thought this has way more power. The hobby shop owner tried to talk me out of buying the Rossi but to no avail....one flight and a complete rekit. Learned my lesson lol!

Shaun

Same at my club, but I am sure you know who to trust and who not to

Done! BME 115, MTD cans and a pair of KS headers. Can't wait!

Shaun Bell

Good deal, you will like the 115, great motor.