DA 50 vs. G 62 in a Lanier Yak 54 87"

[drbyrnes]

Hello. I'm fairly new to this site, so please excuse me if I'm starting a thread in the wrong place. I couldn't find a previous thread about my question.
I have Lanier Yak-54 ARF in the box, 87" span, and 16-18 pounds flying weight. The plan calls for a 50 to 80 cc. engine, and the manual shows a DA-50 installed. I know a guy who has a Zenoah G-62 in his, but he is not heavily into 3D flying, so he's OK with the extra weight of the G-62. But I was hoping to go with a lighter engine, because I'm learning some 3D stuff. I was thinking of trying the new DA-85, but some guys at the club think this would be too much engine for the Yak. So my question is, how would you guys compare the potential performances of a G-62 vs. the DA-50 in an airplane of this size and weight? Would the DA-50 provide enough power? Thanks.

[JEFFRO503]

Hey drbyrnes.....

If your planning on wanting to do the 3D type flying , the DA-50 would be the best bet between those two motors. It does weigh less than the G-62 , but also has more of a "3D type" power for that type of flying. The G-62 is an awesome engine , and has proved itself over the years to run like a swiss watch , but for 3d.....there are better choices out there.

You have to remember that wing loading is extremely important as well for 3D flying. DO NOT install a DA-85 on the front of a 30% yak.....to much power that you will never use without sooner or later damaging the front end of the yak , and probably the motor itself. You couldn't run a 26" - 27" prop on the 85 like what it needs because of the clearance i believe. You would be running around a 23-24" prop....which makes the 85 waaaayyyy under propped , and god only knows what type of RPM's you would be getting out of the motor.


There are other 50cc-55cc motors out there as well , that you might want to look into as well. Taurus 52cc , 3W-55 , MT-50 , the newer extreme power area 51 motor and countless others. Some come in lighter than the DA 50 and some with quite a bit more power as well. Hell.....if you really wanted a lot of power , stay light , and have a good 3D performance motor , you should look into the Berelli 366 ( 60cc i believe.


Don't get a DA-85 for that Yak , it's a waste of a motor , and that airframe won't be able to hold up to that type of power for to long. It's made for an aircraft for around 21-26lbs.

[rcairflr]

I'm not sure why you would restrict your choice to 2 engines. My vote is for the Brillelli 366GT. I've seen this airframe, don't believe you'll ever get it to 16 pounds, maybe 18. Unless you are using a magical scale that makes your airplane the lightest of all.


http://www.scottellingson.com/

[jdearduff]

	Quote: Originally Posted by drbyrnes
	Hello. I'm fairly new to this site, so please excuse me if I'm starting a thread in the wrong place. I couldn't find a previous thread about my question. I have Lanier Yak-54 ARF in the box, 87" span, and 16-18 pounds flying weight. The plan calls for a 50 to 80 cc. engine, and the manual shows a DA-50 installed. I know a guy who has a Zenoah G-62 in his, but he is not heavily into 3D flying, so he's OK with the extra weight of the G-62. But I was hoping to go with a lighter engine, because I'm learning some 3D stuff. I was thinking of trying the new DA-85, but some guys at the club think this would be too much engine for the Yak. So my question is, how would you guys compare the potential performances of a G-62 vs. the DA-50 in an airplane of this size and weight? Would the DA-50 provide enough power? Thanks.

Here is what you do. Take that G-62 Tie it to a rope, and now you have your new boat ancher. Zenoah needs to do something because they are being passed up by all of the other manufatures making new engines. If you want an engine that will be with you for along time never by a weed wacker motor, IE Zenoah, Fuji, or anything like that. You will have more Problems then you have time for. The lanier is a heavy plane. There are alot of other planes the same size that way less. But you allready have it so make the best of it. I am a big DA fan. But I think a better engine would be a 3w55i or if you can find one a 3W75ius. They will give you the extra power you need to HUCK that tuna boat around. Spend the little bit of extra money for a good engine and you will not regret it.

[Wild Thang]

DL-50. Little more power than a DA-50 and cheaper. I've had 2 gallons through mine and no flame out. A friend has one as well, although, his has 10 gallons through it and still no flame out. It will sing like a song.

Mine is in a 30% Extra 330L (87 inch span). It's about 18 pounds and it hovers at 1/2 throttle.

[Wild Thang]

.

[Mitsu1]

	Quote: Originally Posted by JEFFRO503
	Hey drbyrnes..... If your planning on wanting to do the 3D type flying , the DA-50 would be the best bet between those two motors. It does weigh less than the G-62 , but also has more of a "3D type" power for that type of flying. The G-62 is an awesome engine , and has proved itself over the years to run like a swiss watch , but for 3d.....there are better choices out there.

I'd probably agree with the above.

	Quote:
	You have to remember that wing loading is extremely important as well for 3D flying. DO NOT install a DA-85 on the front of a 30% yak.....to much power that you will never use without sooner or later damaging the front end of the yak , and probably the motor itself. You couldn't run a 26" - 27" prop on the 85 like what it needs because of the clearance i believe. You would be running around a 23-24" prop....which makes the 85 waaaayyyy under propped , and god only knows what type of RPM's you would be getting out of the motor.

I disagree with this. Lanier put 50-80cc on the box, but should have left 50cc out of the equation because this plane is bigger than most any 50cc you'll ever find. Its really a 80cc plane. It has tall landing gear legs and it will easily clear a 26" prop as many people fly this plane with the ZDZ80.

	Quote:
	There are other 50cc-55cc motors out there as well , that you might want to look into as well. Taurus 52cc , 3W-55 , MT-50 , the newer extreme power area 51 motor and countless others. Some come in lighter than the DA 50 and some with quite a bit more power as well. Hell.....if you really wanted a lot of power , stay light , and have a good 3D performance motor , you should look into the Berelli 366 ( 60cc i believe. Don't get a DA-85 for that Yak , it's a waste of a motor , and that airframe won't be able to hold up to that type of power for to long. It's made for an aircraft for around 21-26lbs.

Someone in the thread said the Laniers are heavy. This is not true concerning these Yaks. They were simply miismarketed as 50cc planes when they were in fact 75-80cc planes. This plane has a short 87" span but a lot of chord (1466 sq. in.) It's about 86" long. This is not typically 50cc size dimensions. The plane weighs about 18 lbs, and yes that would be heavy for a 50cc ...but its not a true 50cc plane. Take a look at this YouTube video of a 87" Lanier Yak flying with a ZDZ80xi and decide if you think its overpowered? It seems to be the perfect match.

YouTube - Lanier Yak 54

The DA-85 has more power I'm sure ... but doubtful it will ruin the plane and engine the way described. I have the 94" Lanier Yak, really nice, well built and light plane.

[drbyrnes]

Thanks for all the input, guys. It looks like the concensus would be to go for an 80 cc. engine. Now if that is the case, is there really a whole lot of power/vibration/speed difference between say a ZDZ-80, and the DA-85? I'll take a closer look at the 80 cc. engines out there. (Although the ZDZ-80 seems a bit over-priced to me.)

[Boulder]

Absolutely no issues with the ZDZ-80 on my Lanier Yak 87". I had a 26 x 10 on it, plenty of clearance. It had plenty of power but it was a little heavy at over 20 lbs.. I did nothing to keep it light, my fault. Lanier planes are a little heavier than other birds of this size, but they're built very well.

Here's the video of the maiden, I did some playing around, nothing serious.

YouTube - Lanier Yak 87" maiden

[Wild Thang]

	Quote:
	Lanier put 50-80cc on the box, but should have left 50cc out of the equation because this plane is bigger than most any 50cc you'll ever find.

Dude... Almost ALL 50cc planes are 85-88 inch wing spans. For example, my plane, ef extra, ef yak, aeroworks yak & extra, dirtech extra 260, wild hare's, etc, etc...

Lighter planes fly so much better.

My 50cc weighs 18 lbs and hovers at half throttle with a DL-50... It's not a bit under powered.

[GremlinX]

DA-50 would be a great choice.
G-62- Good for scale flying and some aerobatics and very reliable.
DL-50 for cheap DA50 power.

[Wild Thang]

My DL out powered a DA with a ks 1060

I'm running a stock muffler. I'm proud of it.