I just got a GP Dazzler kit (40 size). This is my second plane. I currently have a Hobbico Avistar 40, with an OS 40 LA.

I was thinking of getting a Tower Hobbies 75 2-stroke. I wan't enough power to hover and stuff like that, so I was going to go with an OS 46, but for the price, I thought that if I went with the TH 75, that I could move it onto a 60 size plane someday down the road.

So, is 75 going to be just too big, powerfull, and heavy for this Dazzler? - I realize an engine this big is not needed on this small of a plane, but will it cause problems?

Thanks,
Doug

By the time you add the necessary weight at the tail you'll have a fast plane that will probably hover but will suffer in most low alpha maneuvers, and will likely fly fast enough to rip the wings off. The landing gear may need beefing up, too, adding even more weight. And longer for prop clearance, of course.

Try a TT Pro-46 and you'll probably be much better off in the long run. or the OS AX .46

A TH-75 is definitely overkill for a plane designed to weigh 4 pounds.

A 'typical' ball bearing .46 weighs around 17 ounces with muffler. The TH-75 weighs 23 ounces with muffler.

You could modify the fuselage slightly and mount the servos near the tail to offset some of the engine weight. You might also need to mount the receiver battery behind the wing. Ground clearance for a big prop might be an issue.

As long as you can balance the plane, without making it grossly overweight, I guess you're ok.

As they say, you can always throttle back.

ive got a .40fx on mine and that pulls it nicely. ive seen uproars and twists with the four stroke 52. the four stroke .52 would probably be the biggest engine id suggest putting in there. or a .46fx it really depends what you want to do. i like the .40fx cuz its a bit lighter and has good power. its not unlimited like the .52 four stroke but it works :P

I used to have a Dazzler. You would be hard pressed to get a .75 on it. a 12 inch prop is about max for the Dazzler with the stock gear. The stock motor mount with the kit will not fit a .75 either. I used and OS .50 SX in mine and I had all the power I needed for hovering and balistic virtical performance. That engine no longer being available leaves you with the OS .55AX at most for this plane. You will likely be disapointed by the lack of 3D capability in this plane as it is really just a sport plane. A very fun sport plane though. Mine eventually sucummed to a stress crack in the fuse near where the wing passed through it. That area where the fuselage gets thin is supporting the weight of your engine and a few hard landings will result in a stress fracture that eventually ripped open in flight on mine due to engine torque. I now believe I would have been better off just ussing a .46 in the plane with an 11 inch prop and it would likely still be flyable today.

You're probably right on the lack of 3D, but as it is my second plane, I didn't want to go straight to a fully 3D airplane. I wanted something that could be my first low wing tail dragger, and sportier/more aerobatic than my high wing trainer. I thought the Dazzler would be a good transition, with my third plane (maybe next winter - 2008/2009) being a Funtana or something totally 3D. I was afraid that a thinner winged, fully 3D bird might be a little much for me right now. I've been flying excellent, and I'm quickly out growing my trainer, but this has been my first summer flying RC. I think the Dazzler (for the price) will be a very enjoyable second plane. I may just move my OS 40 LA onto it, but I do want to try to see if I can do some form of hover, and I'm concerned that engine wont be enough to do that. I also plan to over size the rudder some, maybe add some counter balance area to it. From what I'm reading, that will improve it's ability to knife edge.

I had a Dazzler with a OS 46 AX on it and as was said in several posts flying too fast could rip the wings off. Luckly before the wings came off I noticed that the engine was literally pulling the fuse and wings apart. I added some epoxy and kept flying until I got tired of the plane and went to a Twist. The 46 AX is somewhat overkill too but I like overkill.

So you think that even my OS 40 LA, might be just right? I don't want to be limited in the verticle - but, heck... I already own the 40 that I can take off of my trainer.

A 40LA would fly the plane but not give it any 3D abilities