Only mod the Air Hogs Havoc needs - RC Groups
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Apr 06, 2007, 10:04 PM
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Only mod the Air Hogs Havoc needs

Ok. I totally went all out on my first Havoc and did every mod possible. It flew fast, but was unstable.
But I learned exactly what I needed to know, what mod a brand new one needs to perform perfectly.

My problem was that it doesn't fly perfectly straight, they tend to fly to the left all the time. So I removed the tail rotor, and gently with pliers pulled the tail motor out half way by twisting it back and forth a little while pulling (I pulled mine out about 3-4mm). Put the tail rotor back on, it now goes perfectly straight.
If you need more forward flight, the only mods I would suggest is twisting the tail clockwise, and if you want it to hover again you can twist it counterclockwise. You can also do the scoop on the nose with tape, but it becomes very unstable when it goes forward too fast.

So those are the only things a Havoc needs done to be perfect.

To mod the radio I obviously took out the spring for the throttle, it makes it seem like a real radio and also allows you to focus more on the turns. Mainly I only use 1 click up or 1 click down to adjust the climb/descent.

I dont really need any trim when I start flying. Maybe 1 click but I tend to undo it because it stabilizes after I get to a level flight. I got a perfect one this time
Last edited by badinstincts; Apr 07, 2007 at 03:02 AM.
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Apr 06, 2007, 10:36 PM
I noticed an improvement with relocating the tail motor as well, but I only moved it about a millimeter. You need to be carefull when moving the tail motor so you don't damage the power wires.
Apr 06, 2007, 10:45 PM
Registered User
I gave the tail a bit of right twist, viewed from the rear. Also added a small hammerhead to the front. I am very pleased with its flight after these two easy mods. I actually like my throttle spring as it allows me to "shutdown" rather than crash with the blades spinning.

Hmm time for a sortie in the living room....
Apr 07, 2007, 02:37 AM
Im stupider than you!
Little strip of scotch tape along the boom,almost like a gyro
Apr 07, 2007, 02:55 AM
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Before I moved the tail motor I took the little strip of heat shrink off, then i moved it, and then I put the heat shrink back on (I figured its there for a reason and I didnt want to change the weight of the heli, I'm guessing the programming is set up so that when you change throttle the tail speed increases/decreases to compensate for the change, so at a different weight the tail motor will not be adjusted properly). My new yellow version (previous was blue) has thicker motor wires going to the tail motor, perhaps its one of the most up to date versions.

I've got 3 flights on it so far, its perfect. Flys exactly where I want it, the blades track perfectly, zero wobble, and it goes perfectly straight with my mod. I like that it goes a little slower than a heavily modified one, this way I can land on a 1sq foot area.

I also noticed that it doesn't lose that much height when i turn left and also it doesnt gain any when i turn right, however it doesn't climb out so sharply. The main blades look a little different too, they seem to have less pitch which requires a higher rpm to fly, but its a lot more stable. I flew the entire charge all 3 times, only 1 crash because i was blowing at it really hard to see how much wind it could handle. Seems I can actually fly this one at night with a small breeze and a little more clockwise twist for more forward flight.
Last edited by badinstincts; Apr 07, 2007 at 03:07 AM.
Apr 08, 2007, 07:57 PM
M16 CIII/AR15/FN 2000 and PS90
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When you are pulling the motor out 2mm-3mm are you pulling from the back or from the front (prop side) im just a little fuzzy here.
Apr 08, 2007, 08:22 PM
Foam Junkie
The motor is held in that cage on the back of the heli. There is only one way for it to go out. You either push it out from the back or pull it out from the front. Dont use the shaft to move the motor.
Apr 08, 2007, 08:46 PM
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definitely not by the shaft. use pliers on the part of the case that sticks out. be very gently only hold the pliers hard enough so you can pull it out while turning back and forth slowly.

I've crashed a few times now, nothing serious, just fooling around trying to go around stuff or land somewhere, but i noticed that if you land where there is lots of dust (behind tables, sofas or whatever) the tail motor does begin to lose power. I simply blow at the tail rotor till it spins really fast and then all is good again. No need to dip it in alcohol yet.
Jan 13, 2010, 08:33 AM
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