I'll e-mail Dave a find out which smoke system he used.

It's the Simple Smoke Pump, by I beleive TME. Is anyone fimiliar with this pump and if it is two inches above the receiver will it cause a crash when turned on ?

I have the TME simple smoke pump and it comes with an electronic switch unit that has a plug in for the reciever. My pump has capacitors installed on the motor and never caused any RFI in my airplanes. I did, however, make sure the pump was a few inches away from the reciever. Maybe three or four, and never had a problem even though I don't have PCM.

I HAVE TME PUMP ON MINE AND ITS ABOUT 2 INCHS AWAY FROM REC. NO PROBLEMS ON THE GROUND . I HAVENT TRYED IT IN FLIGHT YET. IM USING PCM.

Perhaps some of you have seen the great smoke system installation done by Bob Pastorello on his site. If you haven't, it's worth taking a look at how he installed a smoke system in his Patty. Really neat. He's using the TME Smoke System.

http://www.rcaerobats.net/GP_Extra/W...Extra-Main.htm

I quess I'll wait for your guys to try out your smoke systems and see if they cause any problems. I know Dave had numerous uneventful flights on his Lazer before he installed his smoke system and crashed. Some how we believe it's related to the smoke system installation.

That could be rcguy1 but I've used mine dozens of times with no RFI problems and I've seen the TME system on dozens of other aircraft with no problems either. Not to say that something isn't wrong with his particular pump but TME has been around for a lot of years.

IF anybody differs please let me know, is it just me or do the 2 hitec digital 5265's in the rudder act pretty slow? if anybody has this combo let me know what you think.

Maybe it wasn't the pump. Sometimes you just never find out what caused a crash and this maybe the one. Dave was flying about 5 minutes when he called out, "I have nothing" and watched helplessly as the Lazer spun into the ground. I think for now I'll pass on the smoke system for my Patty.

I don't believe Hitec makes a 5265. Do you mean 5625 or 5645? If so I'm using 5625's all around with no problem. The 5645s are slightly slower but with more torque but still fast enough that you can't tell the difference between the two. I'm using a 6 volt system which make the servos even faster with more torque.

oops sry meant the hitec 5265's , thanks

I must be doing something wrong. I built a GP Extra 300 exactly according to the plans (see my earlier thread).

It took 30 ounces of lead to balance the plane (using the GP CG balancing stand) at a CG that is 5.75 inches aft of the leading edge of the wing where the LE contacts the exterior fuselage. The GP instructions say the CG should be 3 3/16 inches from the leading edge of the wing at the wing tip. I got the 5.75 number from some notes in this thread.

Does anyone know if this CG location is correct? With the weight necessary to balance at this point the aircraft weighs 17 lbs 7 ox - which is a lot for a glow engine.

Thanks in advance for any help - this web site is an awesome resource for RC!

Try getting a buddy and check the balance where it says on the instructions. The little book that comes with the airplane. (sorry)

The balance point with the fuel tank empty is 3 13/16", not 3 3/16" That's a big difference and probably accounts for your 30oz of nose weight.

That 5.75 is at fusealuge i thank without going to check. Iknow the 3 13/16 is right a the tip there is no way you need 30 ounces at firewall you need to check everything and find the problem is. I have a BME 50 on mind and added no weight.

good luck
James

Something is wrong. Nobody has added 30 oz of weight to the nose to balance the Patty. I have a BME 50 and added no weight to the plane. Are you the proper 7 inches off the firebox? To balance the Patty most of us just moved the battery pack around.

Edge 540kid, Hitec doesn't make a 5265 servo. I think you mean a 5625.

Macbeth,

With your lighter engine you should probably have a single servo up front with a pull-pull. Get rid of the wieght and pull the rudder servos and battery. Set the CG machine to balance on the wingtube or maybe an 1/8 inch in front of the center of the wingtube. Then place the servo and battery where the plane balances and that's where they need to go.

Useless weight -BAD, Light plane -Good.......A balanced Patty is a happy Patty.

Does anyone think with that engine he needs the torque of two rudder servos?

Basin Bum -

You're right. Since I posted the last note I did some calculations. By going with a pull-pull rudder system I can eliminate almost 15 ounces of lead from the nose. That's what I'll do.

Does anyone have experience with the hitech digital 5945's?? I'm planning on using these, Also do you think one servo for the rudder will work? It has 180 oz of tourqe at 6volts and 152 at 4.8 volts. These servos are about 2 oz. each, So I am hopeing that 1 servo with that tourqe rating at 6 volts would work for the rudder.
I will be doing as much 3-D as my experience will allow!! Any input would be greatly appreciated- Thanx guys!!

I always thought that if you could pull out of a hover, then you must have unlimited vertical??

Tiger; I have better than 1:1 power to weight ratio and I am able to hover with a little throttle left I can pull out straight up but she wont keep going forever she does finally run out of steam but when I change from my 17x8 apc prop to an 18x10 that might change

Changing from a 17x8 to a 18x10 will lower your maximun rpms and you will get less vertical. I'm using a BME 50 and when I go from a 22x10 to a 22x8 I get more vertical.

My cg is 6 3/8 at the fuss . tank in stock location.

heres a pic of my TME pump.

ANOTHER PIC..

LeeB , I WAS THINKING OF SELLING MOKI2.10 AND GETING BME 50, BUT THEY ARE HAVING PROBLEMS . HOW HAS THE DA50 DOING SO FOR? WAS IT BAD TO INSTALL? THANKS