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-   -   .46 engine too much for GP Dazzler? (https://www.rcuniverse.com/forum/beginners-85/7833226-46-engine-too-much-gp-dazzler.html)

ser00 08-11-2008 10:55 AM

.46 engine too much for GP Dazzler?
 
Hi everybody,

I have a quick question. I am about to start building a Great Planes Dazzler (kit). I wanted to put an Evolution .46 NT engine on it with a APC or MAS 11x6 on it. Is this too much engine for this plane? I plan on beefing up various areas of the plane for it (firewall, ect). Should I buy a Super Tigre .40 size for the plane instead? I much rather use an engine that I already have. Any advise would be greatly appreciated.

Happy Flying!

alfredbmor 08-11-2008 11:06 AM

RE: .46 engine too much for GP Dazzler?
 
The evolution will work great in this kit.
The Super Tigre engine is a great one but the evolution has more power and it is friendler to use.
Would be nice if you decide to post your kit building advance.
Good Luck!!!

bigedmustafa 08-11-2008 12:03 PM

RE: .46 engine too much for GP Dazzler?
 
The .46 NT is at the top end of the recommended power range, but the airframe should be up to it. The Evolution .36 NT would be a terrific choice for this airframe as well.

ser00 08-11-2008 01:33 PM

RE: .46 engine too much for GP Dazzler?
 
Thanks everybody for your responses. I will put the Evolution engine in the plane. My thought is that it is better to have more power and throttle back than be full throttle and wish you had more. I might do a build thread on the plane. I have several other kits to build and I plan on taking plenty of pictures. The kits are the Dazzler, Rapture 40, Easy Sport 40, an Ultra Sport 60 and I will be picking up a Patriot this weekend. I am not sure if it is the 40 or 60 size (Patriot).

Happy Flying!

ChuckW 08-11-2008 01:41 PM

RE: .46 engine too much for GP Dazzler?
 
Just remember that you have a throttle stick on the transmitter and don't be afraid to pull it back now and then. I would also recommend trying an APC 12.25x3.75 prop for that type of plane. It will give you a lot more low-end thrust and lower the top speed some.

bigedmustafa 08-11-2008 02:57 PM

RE: .46 engine too much for GP Dazzler?
 
It's an oversimplification to say, "just ease back on the throttle stick" when it comes to outfitting a new airframe. Which engine you select will significantly affect overall weight, wing loading, maximum flight times, lateral balance, and Center of Gravity.

Too many pilots install the biggest engine they can fit onto an airframe and then wonder why their planes won't slow down for landing or why their landing gear blocks break out so easily. A larger engine is too often the solution to a problem that would have been better fixed by a change of prop and/or some additional fine tuning of the carburetor needles.

The .46 NT is a good choice for the Dazzler .40 kit, but the .36 NT would make your Dazzler a full quarter of a pound lighter in weight. If you want an easy-to-land aerobat that will float down to land, the .36 NT is a better option. If you want to practice hovering and need extra power to punch straight up, the .46 NT is a better option even though it will land heavier.

ChuckW 08-11-2008 03:30 PM

RE: .46 engine too much for GP Dazzler?
 


ORIGINAL: bigedmustafa
It's an oversimplification to say, "just ease back on the throttle stick" when it comes to outfitting a new airframe. Which engine you select will significantly affect overall weight, wing loading, maximum flight times, lateral balance, and Center of Gravity.
I absolutely agree but my point is that the .46 will work if he already has it. It will be a quick little plane with that engine though so throttle management would be important. Personally, something like a .46-LA would be plenty to make a great flying plane.

bigedmustafa 08-11-2008 08:11 PM

RE: .46 engine too much for GP Dazzler?
 
No problem, Chuck. I was actually responding more to:


Original: ser00

My thought is that it is better to have more power and throttle back than be full throttle and wish you had more. I might do a build thread on the plane.

I wasn't trying to contradict your very good advice; we both agree that the .46 NT would be a good match. I only hoped to prompt ser00 to consider engine selection more carefully.

ser00 08-11-2008 08:54 PM

RE: .46 engine too much for GP Dazzler?
 
Hi everybody,

As always, thanks for the replies. The only reason I was thinking about using the .46 was because 1.) it is the smallest engine that I have and 2.) it needs a home. I have no problem buying a smaller engine for the plane. I do agree that some people oversize the engine for their planes and it gets them into trouble. I read somewhere that a hot .40 would be great for the Dazzler. I figure that I could run the .46 a little rich to keep it from overpowering the airframe. I am not one who tries to squeeze out every last rpm from the engine and would rather run a larger engine richer and have it last longer than stress out a smaller engine. Of course, that line of thinking could change in the future. I have a OS 160 2s in an Ultra Sport 1000 that I usually fly at 1/2 throttle but there are times that I like to pull back on the elevator and go WOT and watch it climb. The coolest part is watching the long stream of exhaust coming from the engine and then smelling the glow fuel fumes.

Happy Flying!

Gray Beard 08-12-2008 10:48 AM

RE: .46 engine too much for GP Dazzler?
 
The Dazz doesn't really come alive until it get's A .46. A .40 will fly the plane but A .46 gives it that kick. The Dazzler and the Up-Roar are two of the all time great fun fly planes!!!:D

Rajib 10-16-2008 01:33 AM

RE: .46 engine too much for GP Dazzler?
 
Hello guys,
I was reading all of your posts and they are very much useful for me. I am planning to buy one Great planes Dazzler kit so I was looking for information regarding this model. I am going to buy for this model OS 46 AX because that is the smallest and right now easily available engine here in my city. As per ChuckW’s advice I will go for APC 12.25 x 3.75 propellers. But I would like to know about Servos, I am a Futaba user so please tell me what should be servo model for this model? Please suggest me analog and digital both models.
Regards,
Rajib

w8ye 10-16-2008 02:42 AM

RE: .46 engine too much for GP Dazzler?
 
Analog 3003 or 3004 would be good enough the digital servos are not needed

Rajib 10-16-2008 04:12 AM

RE: .46 engine too much for GP Dazzler?
 
Thank you very much for your advice. I am going to use S3004 for this model. but I want to know one more thing that is S3004 has enough power for doing 3D moves and hovering?

w8ye 10-16-2008 05:12 AM

RE: .46 engine too much for GP Dazzler?
 
With 6 volts instead of 4.8 volts it will be adequate

However the Dazzler is not able to hover very well unless you extend the ailerons to be square up close to the fuselage where the prop blast can hit them,

You need all the throw you van get on the controls. You will need the longer Dubro arms for some of your servos. Use a mini servo on the throttle.

Build light weight use only 8 oz tank and light weight wheels and 12 1/4 X 3 3/4 APC prop

Look at some of the Dazzler and it's paternal twin the Uproar build threads. The two planes are pretty much the same except for the turtle deck and the shape of the rudder and elevator. The elevator could stand to have more area yet have more clearance for more rudder throw.

Rajib 10-16-2008 05:52 AM

RE: .46 engine too much for GP Dazzler?
 
Do you want to say that I must increase the elevator area and also i should give more clearence angel of area for rudder movement?

Gray Beard 10-16-2008 10:55 AM

RE: .46 engine too much for GP Dazzler?
 
That's what he said.;) I was an Up-Roar person for years and flew the Dazz quite A bit, there are some much better choices of air frames out there for 3-D today. You may want to take A look.


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