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Old Apr 10, 2012, 12:52 PM
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Hi everyone,

I have posted another tip that may help other Qs8005 and Qs8006 owners.

If any of the rotor shaft bearing’s are loose in their plastic housing’s, they can easily be tightened up by wrapping them with aluminum foil;
Reason; If any of the rotor shaft bearing’s seem too loose fitting in their plastic housing, they may cause extra gear noise, extra vibrations, can cause the rotor shaft to be loose with side play, can cause gear slippage under heavy throttle, etc..
Note; if the bearing’s can be pushed in and out of the plastic housing somewhat easily and don’t really have any side to side movement when mounted into the housing, then the bearing to housing fit should be ok.

To Correct - Last year on my Qs8005, I had found that the lower rotor shaft’s main bearing was pretty loose fitting in the plastic housing of the plastic frame block for some reason. I easily fixed the bearing to housing looseness by first cutting out a piece of aluminum foil that was slightly wider and exactly as round as the bearing‘s circumference. I then just very carefully and evenly press wrapped the outer race of the bearing with the aluminum foil. On my Qs8005, the lower rotor bearing was so loose that I actually had to use 2 pieces of aluminum foil to properly tighten up the lower main bearing’s fit in the plastic housing. Once I had the bearing carefully and evenly wrapped with the aluminum foil, I lightly pressed the bearing back into the plastic housing. Once I was done, the bearing looseness was 100 percent fixed, and my helicopter ended up with a bit less vibration and has flown great. The amount of aluminum foil that will need to be used will depend on how loose fitting the bearing is in the plastic housing. The goal is to tighten up the main bearing just enough so that they will be a slight snug fit in the plastic housings. This fix can be used on any of the main bearings that need tightened up on the rotor system, but due to the little size of the bearings, it does require a little tedious finger work and might require a few attempts to get them in just right.

Ray
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Old Apr 10, 2012, 04:18 PM
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Interesting, Ray. I never looked at my bearing play.. guess I should do that while I'm waiting on the electronics. They may be a little loose which might be another cause to my weird vibration issue. I'm thinking, though, that maybe a careful application of adhesive might be an easier way to fix this? Although with the aluminum foil you could essentially wrap the entire bearing if necessary and simply poke the shaft up through the middle!
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Old Apr 10, 2012, 04:41 PM
Darren
Joined Mar 2012
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G'day Ray

It is actualy my tail motor that's packing it in but thanks for the advise anyway.
I unplugged the main motors at the board and then did the start up procedure with the rx and tx.
I noticed that the revs would suddenly drop off with the tail motor at full stick but was fine in reverse, which makes me think the brushes are buggered. I should add that this was before I cut any wire!
Does any one know if I could use a variable voltage regulator between the rx and a motor that was rated under 12 volts?
I just found this 100W DC Motor Speed Control PWM Controller LED Display on ebay.

Darren
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Last edited by Daggy; Apr 10, 2012 at 04:53 PM. Reason: Added info
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Old Apr 10, 2012, 05:59 PM
Different fly 4 different guy
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Hey you fans of huge helis - how about a FXD A68690 advertised as 47" long?
.
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Old Apr 10, 2012, 08:50 PM
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It wouldn't surprise me that the FXD is a knock off of the GT. It even has similar LED "missiles" on the sides of the frame. On one advert though, they have a photo of the upper blades being bent almost in half. Makes me wonder exactly how stable that thing will be in a hard turn if we're having issues with blade movement on the GT!
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Old Apr 10, 2012, 10:20 PM
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Hi gordonzo,
I saw a couple of those helicopters on eBay recently. I don’t know who makes them, but like Rick was saying, they are similar to the G.T Model helicopters. When looking at the photos they look like they could be a good helicopter, but since their haven't been out on the market very long, I don’t know much about them or whether their good or bad.

Ray
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Old Apr 10, 2012, 10:21 PM
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Hey Rick,
I bet you can’t wait to get your new receiver board for the 8006. I know when ordering parts from China, I’ve had parts come as quick as 5 working days, but the average time has been 8 to 10 working days. Waiting for the parts to come can seem like it takes forever when you need a part to fly again.

Ray
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Old Apr 10, 2012, 10:38 PM
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Hi Darren,
I think you are probably right about your tail motor going bad. Those little tail motors are asked to do a lot for their size, especially when the tail blades are increased in size.
About using something less than 12 volts on a 14.8 volt system, although Im no electric specialist either, but Im sure if the voltage difference is too big, the part wont last long. If its just a couple volt difference it might be ok, but any more volt difference than that probably becomes a bit risky. Maybe somebody on another thread in the RC forum could give you a more accurate answer for what your trying to find out. I know with the RC electronics, sometimes they can be sensitive.

Ray
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Last edited by Pilot Ray; Apr 11, 2012 at 12:20 AM.
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Old Apr 11, 2012, 12:22 AM
Darren
Joined Mar 2012
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Ok I've just bought a 12 volt 50mm ducted fan from the states and a 12 to 24 volt speed controller from Hong Kong.
It's going to take until next month before the controller arrives so this will be torture for me!
I'll keep an eye on this thread though and throw my 2 cents in when I can.

Darren
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Old Apr 11, 2012, 12:33 AM
Different fly 4 different guy
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Quote:
Originally Posted by Pilot Ray View Post
Hi gordonzo,
I saw a couple of those helicopters on eBay recently. I dont know who makes them, but like Rick was saying, they are similar to the G.T Model helicopters. When looking at the photos they look like they could be a good helicopter, but since their haven't been out on the market very long, I dont know much about them or whether their good or bad.

Ray
Quote:
Originally Posted by letterman7 View Post
It wouldn't surprise me that the FXD is a knock off of the GT. It even has similar LED "missiles" on the sides of the frame. On one advert though, they have a photo of the upper blades being bent almost in half. Makes me wonder exactly how stable that thing will be in a hard turn if we're having issues with blade movement on the GT!
FXD has been a round for a while but I have never owned one. They make helis from very small to very huge. And there are also FXD clones out there. We are trying to repair a knockoff of the FXD-A68688, about the size of the 9053. It is mostly FXD under the hood but has a different canopy. Build quality is so-so. The FXD parts are a bit hard to find.The original owner paid $250 at a mall kiosk and the current owner paid $100 with a non-working tail motor/receiver issue.

Left to right: a68675 (similar to 6025), a68688 (similar to 9053), and a68690 (biggest I have seen). FXD makes many others as well. Whether they are copies of something else I don't know, but they have a lot of different models.
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Old Apr 11, 2012, 10:08 PM
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Quote:
Originally Posted by Daggy View Post
Ok I've just bought a 12 volt 50mm ducted fan from the states and a 12 to 24 volt speed controller from Hong Kong.
It's going to take until next month before the controller arrives so this will be torture for me!
I'll keep an eye on this thread though and throw my 2 cents in when I can.

Darren
Hi Darren,
Waiting for the parts to come always seems like its takes forever. Hopefully in a couple of weeks your 8006 will be shredding more of those gum tree leaves.
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Old Apr 11, 2012, 10:09 PM
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Hi gordonzo

The FDX’s look good, but do cost much more than the big G.T Model helicopters. It’s good to see there are other companies making big helicopter‘s though. The G.T Model Qs8006 is currently the biggest electric helicopter made with a length of around 53“ long. The Qs8006 is also much lower priced than the FDX A68690 and the Qs8006 is sometimes selling for under $130.00 with free shipping on eBay. Also, the FDX A68690 is 11.1 volt where as the Qs8006 uses the more powerful 14.8 volt. The good thing about the FDX though, is that it might urge G.T Model toy company to make a giant 3.5ch or 4ch. 60” Qs8007 helicopter with a18.5 volt battery, and priced under $150.00 so as to try too stay ahead of the competition.

Ray
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Old Apr 12, 2012, 02:55 AM
Different fly 4 different guy
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Quote:
Originally Posted by Pilot Ray View Post
Hi gordonzo

The FDXs look good, but do cost much more than the big G.T Model helicopters. Its good to see there are other companies making big helicopters though. The G.T Model Qs8006 is currently the biggest electric helicopter made with a length of around 53 long. The Qs8006 is also much lower priced than the FDX A68690 and the Qs8006 is sometimes selling for under $130.00 with free shipping on eBay. Also, the FDX A68690 is 11.1 volt where as the Qs8006 uses the more powerful 14.8 volt. The good thing about the FDX though, is that it might urge G.T Model toy company to make a giant 3.5ch or 4ch. 60 Qs8007 helicopter with a18.5 volt battery, and priced under $150.00 so as to try too stay ahead of the competition.

Ray
Regarding the size of the QS8006 at 53" long. I didn't realize it was that big!

Regarding the wishful future 60" QS8007. again!

Makes my T23 look tiny and inadequate.

Wouldn't it be neat to a have 'large heli only' meet where we can all show off our big birds?!

regards . . . g
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Old Apr 12, 2012, 08:34 AM
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We'd need to meet somewhere in the midwest where there's enough room to fly birds that big! The 8006 is only 48/49" long, though.. I don't know where they got the 53" number they are advertising (maybe they stretched the antenna all the way back...). I can't imagine trying to maneuver a 60" heli where I am.. winds are bad enough with a small one!
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Old Apr 13, 2012, 09:07 PM
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Ray

Hey Rick or Darren, or anyone that has a Qs8006 helicopter

I bought and received a new Qs8006 helicopter yesterday (Friday) and have a question about the 8006’s transmitter.

I was wondering if the throttle (joystick) is suppose to be spring loaded on the 8006 transmitter (so that the throttle will shut off automatically when you let go of the joystick)?
I noticed that the throttle (joystick) on my new 8006 transmitter doesn’t have a spring return (joystick doesn't go back to the off position automatically) and I wasn’t sure if the 8006 transmitter is suppose to work that way.
This is different than on my Qs8005 transmitter since the throttle’s joystick on it is spring loaded so it automatically goes back to the off position.

I did fly my new Qs8006 helicopter with the throttle’s joystick working this way, and in a way I kind of liked it working this way since the helicopter can hold a hover on its own without having to hold the joystick. I guess the slight downside to the throttle joystick working this way, is that I have to be extra careful to not accidentally bump the throttle whenever the transmitter is on.


I did fly my Qs8006 one flight so far, and my 8006 helicopter was amazingly very stable and smooth flying. On my first flight I only did some very slow flying since my 8006’s blade pivots are a bit looser than I like and really need shimmed before attempting the faster flying.

Here is one thing I have learned about the length of the helicopter (length includes the swing radius of the tail blade);
------- the factory list the Qs8006 length as being 134cm (52.75“)
------- the box of my new Qs8006 lists the helicopter as being 130cm (51.2”)
------- my new Qs8006 helicopter when measured has an actually measurement of 127.6cm (50.25“).
So the above dimensions show that my Qs8006 is one inch shorter than what it’s own box says, and my 8006 helicopter is also 2.5” shorter than what G.T. Model toy factory lists on their website. That is somewhat of a pretty big discrepancy in measurements, and I‘m not sure why that would be, but regardless of the measurement discrepancies the 8006 helicopter is still a big electric helicopter at 50” long.
I plan to fly my Qs8006 in stock form for a short while so as to see how the 8006 performs in stock form, and eventually I plan to put on my larger modified blade on it, and I figure then my 8006 be close to the 53“size.

Also, I have been comparing the differences between my Qs8006 and Qs8005 helicopter and I have learned some very interesting things about them. I will post what I have learned soon, but at least now I won’t be in the dark when the posts are about the 8006.

Ray
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Last edited by Pilot Ray; Apr 14, 2012 at 11:28 AM.
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