thejo3

Hi All !

I just bought a daydream 2M wingspanfromDynafliteand I'm wondering if any of you have an idea if we can add, or actually what engine we can install on it. I remeber when I was younger, my neighbourès son had a sailplane too and mounted an engine in the middle of the wing. I donèt rember what size of engine and also on what kind of mount he installed it (I also know it was a little box with pieces of wood he assembled to install the engine andheld it with rubber like the wing)... If someone could help me so I could enjoy more speed with my plane. Thanks !

evan-RCU

They still sell mounts to put a cox .049 on gliders.... but it's more efficient to cut off the nose and install an electric up front with a folding prop.

Tall Paul

Do a search here on "pod mount"... there's a ton of messages and how-to-do-its.

Bad_Daddy

When I decided to put a motor on one of my sailplanes I just made some marks on the nose to match the diameter spinner I wanted, laid the fuselage on my radial chop saw and hacked that baby off! It had a solid maple nose. Then I sanded it smooth and square to the thrust-line and mounted the motor. Yeah, my Schweizer 1-34 isn't a true scale representation of the plane anymore, but so what? I can fly it now, and that's why I built the model in the first place.

Bill Teller

Bad Daddy has got it rite -- I put an OS10 on my 2m Sprit & it worked fine. Didnt thinkit would thermal with all that extra drag
wrong big spoilers are needed & I need a new plane. Next time an electric with a folder.

thejo3

do you know what store would sell a.049 or.10 moto ?

da Rock

I've seen Cox .049s at two local hobby shops. They apparently are no longer in production however. There are other mfg's making the 1/2A engines.

Look up Hobby Shop in the phone book.

thejo3

I'm just wondering about the fact the the Day dream doesnt have any wheels so how would the propeller be ok if it is mounted on the nose of the sailplane ?

da Rock

Glow engines will stop running with the prop in the same place every time. Basically what happens is that the wind pushes the freewheeling prop around. It turns until the piston comes up on compression and stops turning. You simply tighten the prop onto the engine so that it is at 9oclock-3oclock when the piston is coming up on compression.

Electrics usually use a folding prop. When it quits, the prop folds back.

thejo3

So what would be the best... Glow or electric engines ?

da Rock

In a glider, electric has more going for it. A lot more.

thejo3

Which one would you suggest me for the Daydream ?

BMatthews

If you haven't done anything with electrics until now (and it sounds like you haven't) then it can be a lot to learn if you don't have a local guru to help out. We're all a pretty helpful bunch but it's not the same as the hands on deal.

But there's no doubt that electric is by far the nicer option since it's clean. No oil to soak into the fuselage and it's quiet. But if you're an engine loving sort of guy then an engine is definetly doable.

An 049 will make it glide uphill to altitude. Not terribly exciting and definetly not fast. A Norvel .061 would have a bit more oomph and fly it like a power model but not a very powerful one. A Norvel 074 would turn it into a speedy/sporty model with great climb. An OS .10 would be about the same.

Cox is not being made anymore but there are still lots around used. Same with Norvel and you'd have to go used. OS is still making and selling the .10 as far as I know.

If you want to take the electric plunge then some good options would be...
http://www.graysonhobby.com/catalog/...roducts_id=336 Run this on a 3 cell 1300 mah Lipo pack. Should climb well but not be a powerhouse. Keep the glider total flying weight to under 40 oz for better performance.

http://www.graysonhobby.com/catalog/...roducts_id=337 This combo will provide a nicely spirited climb of great authourity and likely let you fly fast enough in level flight to easily do a loop wihtout any diving to pick up some speed. Use the same 3 cell 1300 but don't expect quite as long a run.

thejo3

Wow... thanks for all that info... I'll take a look at all this and get plus vs minus list and I'll bring feedbacl... In the meantime feel all free the give me more hints about my first sailplane.

Pss... My first plane was actually a Pt-40 but I was to scared to fly it so I switch to cars for 2 years but planes seems more interesting and I love to build them !

daja

Here is an option to motorizing your glider. Years ago I used a .061 motor with a throttle control by building a power pod. It had a small gas tank, a motor, and a mini servo and it worked real well. You could strap it on the wings with rubber bands and plug in the wire from your throttle servo and away you go. But with fuel comes the oil, and it is messy and it does get into the wood. I took this Idea and have applied it to an electric version.

The electric motors work real well but I have not found the secret to stopping the prop from spinning once you get to altitude. The rotating prop does bring the plane down considerably faster. Someone may add to how to stop the prop from spinning. But, this will get you in the air. I am using an E-flite 370 outrunner motor 1360kv and a 9x5 folder, or 8x6 non folding prop with a 1320 lypoly battery. You will also need a 20 amp speed control. Plenty of power and I can get 5 good climbs out of this set up. The equipment does not change the balance of the airplane as it all sits on the center of the balancing point. The battery is in the fuselage right on the cg. The total additional weight of the equipment is about 8 ounces, but I have large wires I haven’t trimmed anything yet. If you don’t want to change your sailplane and want to just strap something on and fly this might be an answer.

A bit about the power pod:
There is nylon motor mount that is made to fit onto a square wood peg and it comes with the motor. You can epoxy the square peg to the top of your hollow ply wood fin and epoxy that to a base. I glued an non slip office product material under the pod so it doesn’t slip on the monokote. The crossing rubber bands keep the pod from moving forward. It can be installed at the field in minutes.
daja

Tall Paul

The ESC should have a "brake" function which will stop the prop when it's powered off.
Or use a folding prop for a nose mounted motor.

Strat2003

My Feedback: (1)

Several guys in two local clubs have had a lot of fun with Gentle Lady/2X6-type gliders powered by E Flite 400 outrunners. Depending on prop/batterey combinations, a climb of 40 to 80 seconds will get you high enough for a dead-air flight of 6 or 7 minutes and there's enough batterey for 3 or more of those climbs.
We sorta stumbled onto the combination since the local hobby shop was putting together packages of the 400 and the proper speed controller and batterey.
I think the combo is just about ideal for a 2m glider. Much less fussy than an .049, it climbs a lot faster, and you have a reliable throttle/shutoff.

Strat2003

My Feedback: (1)

FWIW, here's a pic of my 4X6

Joe69

I converted one of my 2m glider from motor to 15 size engine at the front. Without the Lipo battery, the power to weight ratio improved tremendously. With just 7x4 prop, the glider can climb almost 45 degree to 300-400 meters in 30-40 sec , then I turned the engine to idling. The engine is so quiet that I hardly hear it while thermal soaring.

thejo3

What .15 moto you used ?

Tall Paul

Hers's an OS 15 on the front of a Gentle Lady,

And an OS 10 on a pylon on an EZ-2000 ARF
An Eflite Outrunner 400 on the EZ-2000 ARF

thejo3

Which one do you prefer. The glow fuel on top, electric on top or front ?

Tall Paul

Electric on top.
I've tried them all over.

thejo3

Wow they all look great...
so you use the Eflite Outrunner 400 on top... on what mount ? with which battery pack?... Did you use a servo for the engine ?

Tall Paul

The mounts are fabbed from plywood and balsa.
The motors are controlled by the Electronic Speed Control, which is plugged into the usual throttle channel.
Power is usually a 3 cell Lipo, about 900 to 2100 mah.