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Old Feb 02, 2013, 10:15 PM
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Trailer Down By The River
Joined Sep 2004
485 Posts
Well started to examine my Dura auto G. Can't believe for 80 bucks it has all it has,, Checking the servo screws and a few were stripped controlling the blades. Pulled the servos and under the servos are a mess with cracked stripped wood surrounding the servo area. So I laminated some thin plywood on both sides ,drilled new holes with longer screws. No big deal. Looks like one perfect kiss will wipe out those plastic servo gears in short order so I anticipate replacing them soon,,hopefully after at least my first successful flight!!
The extra flex part they give you...[forgot the name ] I will use as a template for other material instead of using it as did the the HK Cierva. As far as blades go if one breaks I will make better ones!!! I have plans for my HK cierva on making some redesigned blades to make it more airworthy despite it's over weight problem.
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Old Feb 02, 2013, 11:04 PM
Do you see what I see?
rcoconut's Avatar
Rancho Cucamonga, CA
Joined Sep 2006
1,739 Posts
Do you experienced auto gyro pilots know what the name of the accessory used at the end of the cordless drill to get the rotor blades pre-rotating up to speed?

Thanks in advance
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Old Feb 02, 2013, 11:32 PM
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New Zealand, Canterbury, Christchurch
Joined Sep 2011
69 Posts
I don't think it's an "accessory" so much,probably more of a home made adapter.
If there's just a nut on the end of the mast,you could use a socket in the drill,but you'd have to be sure not to unscrew the whole blade and kaboodle.
There is some sort of electric "pre-rotator" available,but it costs quite a bit,and adds weight..Just rotate the blades close to the hub with a finger.Cheap and effective.
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Old Feb 02, 2013, 11:34 PM
Do you see what I see?
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Rancho Cucamonga, CA
Joined Sep 2006
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Thanks, thought it may be a piece of PVC but wasn't sure, thanks!
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Old Feb 03, 2013, 11:45 AM
flexwing addict
mark675's Avatar
midlands uk
Joined Sep 2004
2,678 Posts
Managed to get the auto-g up today
the wind was so strong that is was nearly lifting off without being plugged in lol
the rotor was spinning like crazy!

I brought my mate down today so he could hand launch it for me and it flew a treat!
managed an almost vertical landing on the first flight but the next landing on the 2nd flight resulted in a tip over and broke the plastic plate again!

i was already happy by then and got back cus was getting cold

what a cool toy though! loads more fun than a 'normal' plane and looks far more impressive
my mate wants to buy my spare one off me so i can imagine the flying field is going to be full of these gyrocopters soon
very good but gotta do something about that head....
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Old Feb 03, 2013, 03:30 PM
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britinoz's Avatar
Elizabeth South Australia 5113
Joined Nov 2005
1,751 Posts
Mark
Glad to know that you did have fun with your new toy.
I 'm sure you must have seen that you should replace that ''Y " shaped piece with a replacement cut from the lid of a "Tupperware type "container. Easy fix
Happy Landings
Chris..............
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Old Feb 03, 2013, 04:01 PM
flexwing addict
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midlands uk
Joined Sep 2004
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Thanks chris yeah i loved it!
can definately see why you guys get addicted to these, facinating things!

i havent read this whole thread yet but i will get round to it and hopefully learn something

i was going to make one out of some glass fibre sheet that ive got at work
it might be too strong though and result in the blade braking instead,
ill need a weak link like i read someone using a toothpick instead of the 2nd blade bolt?
i rather replace one of those instead of taking the head apart after every small tip over lol
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Old Feb 04, 2013, 03:13 AM
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britinoz's Avatar
Elizabeth South Australia 5113
Joined Nov 2005
1,751 Posts
Mark
The tooth pick method is very good... the stick breaks allowing the blade to swing back ..... and so saving the blade..................
Three more flights with the ML today.........all good mate
chris.............
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Old Feb 04, 2013, 06:22 AM
flexwing addict
mark675's Avatar
midlands uk
Joined Sep 2004
2,678 Posts
brilliant Chris
i had some frustrating times with mine when i first started but its all a learning curve and so worth it in the end,
glad youve got yours all sorted now it looks so realistic with the proper spats!


yeah i think i might go with the tooth pick method as changing the plate at the field with all those small screws is just a pain lol

was thinking of redesigning the head as theres a fair bit of play in it,
using a m3 bolt through a 3mm id bearing doesnt make for a snug fit does it! lol
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Old Feb 04, 2013, 10:30 AM
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Trailer Down By The River
Joined Sep 2004
485 Posts
Where you guys set the CG? I see the instructions with a bullseye on the mast and forward a line of 220 mm ..Any suggestions?
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Old Feb 04, 2013, 10:53 AM
It was a GLITCH! Honestly!
SafeLandings's Avatar
Stourport on Severn ,Worcestershire, United Kingdom
Joined Dec 2007
4,844 Posts
Mark,
Congratulations...welcome to the club


Rich
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Old Feb 04, 2013, 11:48 AM
flexwing addict
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midlands uk
Joined Sep 2004
2,678 Posts
Thanks Rich, good to be here
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Old Feb 05, 2013, 08:33 AM
flexwing addict
mark675's Avatar
midlands uk
Joined Sep 2004
2,678 Posts
made the new plate today out of some 1.6mm epoxy glass,
should be much stronger now,
just need to raid the cupboards for toothpicks when i get home
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Old Feb 05, 2013, 09:41 AM
flexwing addict
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midlands uk
Joined Sep 2004
2,678 Posts
another mod i did was to take the play out of the head,
i put a smear of cyno glue around the bolt on the two places where the bearings contact and then when fully hard i gently sanded the glue until the bolt was a nice tightish fit,
this makes it so the bearing is doing the work instead of the bolt being able to spin in the id of the bearing.
i got a nylock nut and turned it upside down so the smaller diameter is sitting on the inside bit of the bearing then just nipped it up,

theres next to no play up and down anymore and side to side is just thr play in the actual bearing itself, spins very free.

hope this helps someone
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Old Feb 05, 2013, 09:48 AM
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Wolverhampton, England
Joined Jun 2010
385 Posts
Hi Mark

Glad you are enjoying the move to the dark side!!

I think that 1.6 mm plate may be too stiff for your application....that type of head set up needs to retain the flex in that hinge, hence the popular use of a tupperware lid.

I'm sure someone will be along shortly to confirm this (or blow me out of the water!!)
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