extreme 330 construction question
 

Did not add any additional right thrust, but I did move the engine back to the stock location. CG is now a little past 5 1/4". Elevator is getting a little touchy so I think that is where it will stay for a while. Put it back at 5 /12" and did not like the way it dropped out of spins. I tried to kill it with the cg back, came out of a low flat spin and let it get away for a moment. Landed in a tree that someone had chopped down. Crumpled one aileron, thank goodness for ca.

Ed M.

extreme 330 construction question
 

After seeing all the post, I had to get an Extreme 330. Almost done getting the servos and linkages set up. Where do you guys run the antenna. Kind of a stupid question but this is my first profile.

Moses

extreme 330 construction question
 

Hey Moses, I ran mine out the bottom of the left wing and down the bottom center of the fuselage.I used white monokote trim too hold it hlf way down then used a rubber band too atach it too the tail wheel guide.

extreme 330 construction question
 

I ran my antenna out the bottom of the wing and ran it to the vertical fin.....I took a pin and made a 90deg. bend and stuck it in the front of the vertical to make a hook....attach a small rubber band to the hook....then take a small 1/2" piece of fuel tubing and slide it over the antenna.....run the antenna through the rubber band and back through the piece of fuel tubing....it's really pretty simple and works pretty well and the rubber band works as a spring so if you catch the antenna on anything there's some give there...I don't think I did a very good job explaining that at all

extreme 330 construction question
 

No, you didn't :eek: :p :D LOL

extreme 330 construction question
 

well I knew what I meant Texas 3d.....Hey I'm curious have you done anything at all to the aelerons or the elevator joiner for reinforcement....also what servos are you using...I'm using 9202's and they are pretty slow...I've heard that faster servos make it easier in hover

extreme 330 construction question
 

I use the same method with my antena's heliplane... Works great.

extreme 330 construction question
 

...yep, works good...

extreme 330 construction question
 

Thanks for the antenna mounting suggestions, I should be ready to fly this weekend (weather permitting).

Moses

extreme 330 construction question
 

No reinforcement what so ever, but I think the ailerons are a weak spot. Binding is an issue here.
I have JR 537's on the ailerons, Hitec 625 on elevator and Hitec 645 on rudder and also a Hitec 225 on Throttle. I had Hitec's 225's on ailerons but they both stripped. Have not flown her yet with the new servos. Had to much fun with my Showflyer and Sukhoi this past weekend.

I run my Antenna in a tube on the bottom of the fuse, and hold the tube in place with white trim tape. I then put a rubber band on the tip of the antenna and attach it to the tailwheel.

extreme 330 construction question
 

Tex, any idea why your HS225's stripped on the ailerons? Flutter maybe? I'm running the same.

extreme 330 construction question
 

Nope, no idea at all ! I thought I had 225MG's on there, but they where just the regular 225's. They strip pretty easy. Maybe it was caused due to flutter. Don't know.

extreme 330 construction question
 

Hey guys,
got a little over 10 hours on it now and it still lives. Would have more but we have been getting a bunch of rain lately. Anybody having to tighten the motor screws every 10th flight or so. Replaced the screws with known good ones and it still gets a little loose.
Ed M.

extreme 330 construction question
 

Me thinks I spoke too quick. Letting another flyer have some fun with it today, with me encouraging him on with comments like lower, slower, etc. Its now broke in half just behind the wing. I did manage to get a big laugh out of it. Poor guy felt so bad he carried it home and is going to try and repair it. Me, I just hope Hobby Town hurries up and gets another shipment in. I WILL have another one.
Ed M.

extreme 330 construction question
 

Just finished mine yesterday (O.S. 46FX), came in at 4lbs 12oz with the CG at 4.75. I used standard size servos on the ailerons and tail, micro servo for throttle.

I took it to the field today but a few things went wrong and I could not fly it. In balancing the plane I moved the battery from the hatch to under the tank - managed to install the tank upside down :stupid:. I fixed that at the field. Then I checked the plane out and it turns out the throttle servo is stripped. This was a brand new HS-81. I must have hit the throttle linkage or something (the servo was fine when I got it). I will probably spring for the metal gear unit.

Then I watched one of the best pilots at our field demonstrate his Ex-Treme 330. He did some hovering, torque rolls, blenders, knife edge loops - just incredible... I turn my back and I hear the noise of the plane contacting the earth - I see it cartwheeling out of the corner of my eye. He was fooling around and go too low in a knife edge loop - oops. Broken fuse, he went home to repair the thing. Sure hope the next shipment comes in soon - it looks like we are going to need them.

Moses

extreme 330 construction question
 

Hi all, any pics of how to install the battery under the fuel tank ? Does this mean that the batt is sandwiched between the tank and fuse, or the batt is at the side of the tank ?

extreme 330 construction question
 

Sorry ... I used to have the battery on top of the tank (but not any more). I located the battery pack on the tank to get the plane to balance at 4.75" without adding any additional nose weight. I think you could strap a AA pack to either side of the tank without a problem ... just sandwich it in there.

I used a 600mah "AE" pack (cells mounted side by side). Type AE cells are considerably shorter than AA but fatter. This pack was essentially the same dimension as the top surface of the stock fuel tank that came with the kit. I just used some cable ties and strapped the battery to the top of the tank, then I strapped the tank to the fuse. I have a small hole in the leading edge of the wing (behind the fuel tank) for the battery connector. Mechanically the set-up was great - everything fit really nice.

However, I needed to move the CG back and I needed more battery capacity. I replaced the 600 AE pack with an 1100mah AA pack - mounted in the left wing in the standard location - next to the aileron servo. This moved the CG back about 1/4" to about 5". The plane hovers better now ... almost neutral when I roll inverted.

Be sure to use lots of foam when you mount the tank. I was having some fuel foaming problems due to engine vibration. I now mount my tank with some screw eyes and rubber bands and some nice thick foam ... engine runs great now.

Moses

Tail servo orientation
 

Guys,

I am thinking of mounting the tail servos with the 4-40 rods on the right side of the fuse. Why ? I think it will be easier for cleanup (compared to oily mess trapped between tube/fuse, servo wires, which take longer to clean). I don't think this arrangement will affect the lateral balance much because the 4-40 rods is pretty balanced up with all the extension wires, wire tube/bracket assembly, bottom section of servo (which is heavier). Is there anything I should know before going ahead with this arrangement ? Thanks !

extreme 330 construction question
 

It will not hurt anything to mount them on the right side, thats where mine are at.
Ed M.

extreme 330 construction question
 

Thanks Ed......

extreme 330 construction question
 

The silencer on my plane, hangs so low that the exhaust cleanup is minimal. If it weren't for the druel of the Irvine carb, I wouldn't have anything to clean. I get a little bit right where the servo hatch cover is and that's it. Good thing I added a strip of covering as a hatch hinge on the forward side, or it would work up into the hatch.

extreme 330 construction question
 

Great idea !

extreme 330 construction question
 

hi all,

i had my first experience with the 330 this weekend and it wasn't pleasant. after buring the midnight oil three nights in a row to get it together i ended up crashing it on the first flight :( snapped the fuse in half behind the wing - is this fixable or do i need a new fuse? and if i do need a new fuse how do you get the wings off the old one since they are epoxied in?

a couple of observations. take these with a grain of salt since i'm new to profile and 3D.

i was not impressed with this arf. maybe i'm too picky (probably) - but i believe if something is worth doing it's worth doing right. some of the rhings i noticed:

1) manual was spotty at best. if it wasn't for a review that someone was nice enuff to write up it would have taken me a lot more time to figure out a few things

2) they are on crack listing the weight as 3.5 to 4.5 lbs. realistically they should list it as 4.5 to 5.5 with 'most' people probably coming in b/n 4.5 and 5. not a huge deal but then again why list a figure that's unattainable for 95% of people building this ARF?

3) the wood around the wing hatches is extremely weak. i broke 2 or 3 corners where the hatches screw down trying to install and that was while drilling pilot holes under very light pressure

4) the list of items needed is obviously not for futaba users. they tell you that 2 6" inch servo extensions are needed and with futaba servos in the back one would need at least 12" extensions for each servo. not a big deal - but for those of us that must mail order everything it's a pretty big bummer not having what you need when you are hoping to fly the next day. after all - isn't wanting to fly quickly one of the reasons we buy ARF's in the first place?


i'm curious as the what the correct CG should be? my manual (which looks like a photocopy) listed 5 1/4 to 5 3/4 i believe from the leading edge at the fuse. i had it approximately 5 1/4 and the thing was practically unflyable which i believe contributed to the crash. does anyone else's manual list something different?

thanks for listening - disheartening to see $150 + and 15 hrs. wasted in 2 mins :(

boneman

extreme 330 construction question
 

I think the cg should be started off at 4 3/4" to 5 ", based on what I'm reading in some threads here. Sorry to hear about your loss. Yep, the manure ......uumm errr....... manual is not the best I've seen. If in doubt, always ask somebody here in RCU.

extreme 330 construction question
 

Yep my manual said to start the cg at 5 1/4 as well so put it close to 6" to be tail heavy. I saw some posts on here where people were saying the 5" was a good tail heavy place to be. So I posted and found out that mine and some other manuals are mis printed. The cg range is actually supposed to be 4 1/4 to 4 3/4. not 5 1/4 to 5 3/4. You might want to try Calling Goldberg or whoever and complain about the misprint in the manual and you may or may not get a new plane out of it. Worth a shot anyway. Sorry about your crash. Luckily I found out before I flew mine at 6" back.

Jason