Maudib

My Feedback: (51)

I believe a 20 oz Dubro tank is supplied... and Aeroslpats LOOKS like it might be a 16...

Nice CG installl Aerosplat! That was exactly what I was thinking!

wgeffon

My Feedback: (4)

It is a 20oz Dubro tank.

Also,
Thanks guys for keeping this thread non-combative. People are going to disagree on set ups and such but nobody seems to be taking this thread down the usual negative, personal attack road.
I love all the great info everyone is providing. Keep it coming.

Aerosplat

My Feedback: (12)

That is the stock tank, straight out of the box. It is a 20 oz Dubro. I'm working on balancing and permanently installing the electronics now. It looks like everything is going to have to go up front to get the CG on the tube. I'm putting the ignition battery on the side of the engine box, and the rcvr battery on top of the engine box. The receiver is on the floor in front of the fuel tank. An aluminum Tru-Turn spinner would probably allow some more balancing flexibility, but I have the carbon Fiber spinner.

jrjohn

My Feedback: (24)

Thems fighting words, Now I'm ready to fight. Let tear the DA 50 apart![:@]

jrjohn

My Feedback: (24)

Is anybody current with the Taurus Engines? I Have a Taurus 42 (Smooth as silk *****cat) and was thinking of hanging it on my Yak. It had tons of power on my 14.5# Sig Sukhoi, take off roll was about 10 feet on grass, then straight up and out of sight. It turns about 7100 rpms with a 22x8 Zinger Pro prop. I know everybody hates the Zinger Pro so forget the prop. Do you think the 42 taurus will be adaquate on a plane that weighs 1 1/2 to 2 pounds more?

John

Yak Man

My Feedback: (1)

To help pass the time waiting on the boat and Brown to deliver the DA, I am in the process of setting the count down timer on my TX.

What is the appx run time for the DA on 20 oz of fuel?
Does the DA manual give any info regarding fuel consumption?

Thoughts on a 16 oz tank?

saddler

My Feedback: (93)

I would venture to guess you can get 30 minutes of normal flying out of the 20oz tank and the DA50. It sounds rediculous but i had the same setup in my Double vision and i could fly it until i was tired of it and then land and there would still be half a tank of fuel, then hand the transmitter to someone else and let them fly it until they were bored. You could easily get away with a 16oz tank if you wanted to. I had the stock muffler so don't know if the 1060 pipe will change the fuel consumption at all but i can't imagine it would be much!

scottfl78

I use a 20 oz tank on my edge and my DA-50 sips it like a lady.. I only fuel once in the morning and I fly quite a few times and hang it up for the day.. I dont have any time figures, but 30 min is not unrealistic.. It comes down to your batteries...

NeoGenesis

My Feedback: (27)

Inreply.....Yes. If it pulls a 15 lb plane verticle qith authority, another pound isn't going to hurt it.



Neo

Maudib

My Feedback: (51)

jrjohn...

If you use the Taurus 42 on your Yak and stick with a stock muffler ans single abttery system of your chemistry choice

You should end up with a plane just over 15 lbs... 15.5 at the heviest I'd think...

Most are wanting phenom power that a 50 will provide... but if you felt you had "tons of power" on your 14.5 lb plane, then you'd probably be pleased with it on the Yak... a WHOLE bunch more wingloading.

If you are into radical 3D then you'd be wanting... but for IMAC and more docile 3D... the Taurus 42 should provide you with plenty of power...

Maudib

My Feedback: (51)

I'm moving to a 16 oz tank B&B flat tank... I could fly for 20 minutes easily on a 16 oz. tank, and usually fly for about 10-15 and have plenty left in the tank.

No use in carrying around an extra 6-8oz of fuel if I'm not going to use it...

Ricmussman

My Feedback: (24)

Hey fellas,

I posed a question several weeks ago (post #188) that was never addressed, probably because post #190 was the arrival of the air-shipped planes to the luck customers. Anyhow, my question was concerning a smoke system? I know the goal is to keep the weight down, would adding a smoke system ruin all other areas of this planes ability to 3D well? Here is what I am looking at:

Plane when it comes!!!
DA50 w/ stock muffler
JR DS8611's
Smart Fly system
16oz Tank
23-8 prop
4" Aluminium spinner w/ lightend backplate
16oz smoke tank
???Smoke System???

Also I bought some new Hi-tec sevos the other day (6995's) and the listed power ratings for 6.0 volts & 7.4 volts???? Are recievers soon to follow at 7.4 volts??? If yes, we would not have to use regulators, right. What do you think?

With my luck the boat will arrive tommorrow and this post will get lost in the excitment again.. I wouldn't mind though, cause mine is on there as well.

jrjohn

My Feedback: (24)

Dave and Neo, thanks for the imput on the Tuurus install. I think I'll try the Taurus first, just because It's already on my bench. If it's not enough, I'll hang a DA on it. Hopefully by that time they will have the Rod and or bearing Issue ironed out. I heard a rumor they are putting steel rods in the DA now.

I'm planning to go with a redundant power system. (2) 1650 Mh AA 6 volt NIMH reciever batteries. Using only one larger capacity battery will only save about 2 OZ in the long run.

John

coche

My Feedback: (4)

Hi, you can go with smoke if you want! this plane its very light..
I preferd not to use smoke, but thats only becouse I dont like smoke! I dont like to be cleaning a lot of oil on the bottom of the fuse, I dont like oil betwen my wings, stabs, and geting on my hinges!

I even dont use smoke on my bigger planes with low wing loading.... but if you like to install smoke on this yak it wont make it fly bad!

and dont worry about the boat cuming tomorrow! the boat its not supost to arrive savannah port until early feb!

Maudib

My Feedback: (51)

Hey Ric,

Well the best answer is YES.... if any airframe would handle the extra weight... it'll be this one. By sticking with the stock muffler... you'll probably come in at 18 lbs fully wet with fuel and smoke oil.

About 16.25 lbs for stock setup with smoke added and 1.75 lbs of fuel/smoke...

MANY guys are flying the Wild Hare at 18 lbs without smoke and loving it and this plane has more wing area...

Your wingloading will be about 28.6 oz per sq. in. This is about average for "lighter" 33%ers... so yes you should enjoy it just fine...

A 50cc is going to be fine on it, but you won't have the radical power to weight ratio.

If you really like smoke, then I'd suggest you go ahead with it... try it out and if you are not happy overall, you can lose that weight and take it out. OR you could go without and see what it's like, then add it and compare...


But defintely you'll still have a great performing plane that will 3D pretty darn well, even at 18 lbs wet... I'd think you'd notice a radical difference when the smoke oil is gone and the tank is half full...

Yak Man

My Feedback: (1)

aering issue

What is the Rod and Bearing issue. Is this a problem on DA-50 being shiiped now?

Maudib

My Feedback: (51)

A "few" people have had the rod go bad... and supposedly enough that DA has replaced the aluminum rod with a steel one...

I don't know as I haven't had any problems with my DA50... I have ordered another one due any day and will get a third for another bird...

If they have chnaged to a steel rod, they will have done it by this batch they are currently shipping (they just got parts to assemble new engines about 2 weeks ago and have been filling backorders and dealer orders.

There are plenty of guys with the "original" rod and have many flights without issue. If you have an older DA-50... don't worry about it... while it could crop up and fail, it is covered by DA's excellent service.

It wuld be interesting to know if the guys who did have problems with the rod were choking their engine with a servo to kill it rather than throttle or ignition kill. I've heard you can bend the rod by over flooding the cylinder and it not having anywhere to go under compression... but I don't know if that's true or not.

Bosshossv8

My Feedback: (10)

I'd like to know more about a problem wit hte DA, I just bought a used one.

I am going with a smoke system too, Ric. I am going with a smaller gas tank, and a smaller smoke tank..probably 8oz . I only fly for short times, at a small field. I figure smoke on/off for 5minutes , with flight times of 10minutes. I can save AUW by adjusting the capacities for a happy medium.

You could also just use the full size tanks and adjust how much you put in them, I quess. And fill em up when you want a marathon flight session!![8D][8D]

I have wanted smoke in an aerobat and never had one worthy of it, so this my chance at it.

You can always take it out.

jrjohn

My Feedback: (24)

There are a couple of threads that discuss the DA 50 problems, search and you can find them. Or call DA and ask them dirrectly what they have done to address this issue. If you do call, I'd like to know what they say as I'm considering buying one if my Taurus doesn't work out.

I was watching my Buddy fly his about 3 months ago on his WH edge 540. His broke a piston. The pieces got all jamed up and locked up the engine. He was on his third gallon of gas and the engine was running perfect right up to the end.

I don't worry about DA fixing the problem, I hear they are great people to deal with. What concerns me is my style of flying and what happens if the engine quits. (I like flying down on the deck) My friend was hovering 3 feet off 10 seconds before the engine self distructed, had it happened 10 seconds earlier it would likely cost him is plane or in any event a lot of damage. If your flying high enough, engine failure should not be an issue, it's just another dead stick landing like we all had when we flew glow engines.

John

jrjohn

My Feedback: (24)

Dave, How much fuel have you run through your engine? Do you hover a lot? I was told the trouble rears up when there is a lot of hovering, Thats what I have gathered anyway

John

matus777

Wayne, just wondering what battery you're using on your Yak and since you have flown the prototpye do you agree that it would be a better flyer with the tank on the CG? I have altered my gas planes so as to put the tank on the CG myself....i did have an issue with air bubbles every now and then due to the long line runs and line curves but after the takeoff burps it all seemed to settle out ok? In the future i'm going to run my vent lines as illustrated in your drawing, which i did not do on my other gassers...maybe this will help too?

wgeffon

My Feedback: (4)

I am using a single Powerflite 4400 Mah for the RX.

I dont see anything negative about placing the tank on the CG.
my main reason for leaving the tank ahead of the tube is I dont like tail heavy planes. (not that the Yak is)
It ensures me a forward CG with a full tank.

Yeah it will change the CG a little as the gas burns off but probably not enough for me to worry about.

CHassan

My Feedback: (13)

WOoohooo[sm=thumbup.gif] My wife just ordered my birthday present. An EF Yak 54 87". (All I have to do is work mass overtime to pay for it now). In trade I also have to buy her a king sized bed, but I think the trade off is fair. (heck I'll sleep in the bed too!!) So where's the boat?

NeoGenesis

My Feedback: (27)

LOL....I wish my wife would think that way......she despises my projects!!!!!!!! I'll get the 46% done though..........someday



Neo

coche

My Feedback: (4)

old DA-50 came with an aluminium rod, now they came with steel rod...

I sent my old DA-50 to them and they change the aluminium rod for the new steel rod..

DA people are very nice to deal with! [sm=thumbup.gif]