gyro!!!???

[mohammad_sa39]

hi,

does anyone know is this possible DIY a gyro for a heli?

i need for a simple gyro!!

thanks, Mohammad

[Andy W]

http://www.rcgroups.com/forums/showthread.php?t=267651

[mohammad_sa39]

thanks Andy for the link,
but i didnt get my answer, is it possible so any help or any info!!?

i want to build one, any helpppppppppppppppppppppppppppppppppppp?

[jeffs555]

It is possible, but the gyro element will cost nearly as much or more than a GWS gyro, and is hard to get, so the question is why do you want to build one?

[mohammad_sa39]

for a project, so i need to build it

[Comatose]

Its simple enough. What other components will you already have in your project, so we know what we're working with?

The analog devices gyro evaluation boards are very easy to work with. They cost about $50, though. What are you trying to do, exactly?

[coaxial-gyro]

I once tried to make a gyro that was made up of a spinning umbrella with a monkey on a bycycle , It did'nt last long.

[richard tunstal]

have you considered a mechanical gyro ?
eg an old servo with the motor running continuously
the case mounted in spring centred gimbals and
out put via mech linkage to a pot.
crude, but better than nothing
and maybe good enough

[Bruce Abbott]

Piezo Gyro Prototypes (http://home.comcast.net/~scottxs/piezogyro/piezindex.htm)

[tve]

I once tried to make a gyro that was made up of a spinning umbrella with a monkey on a bycycle , It did'nt last long.

I'm pretty sure this is how the GWS gyros work.... Sure you didn't do something wrong?

[mohammad_sa39]

coaxial-gyro,what the monkey spinning umbrella did for the bycicle?

richard tunstal, yes a mechanical gyro,i didnt understand your other words.

Bruce Abbott, thanks for the link.

regards,Mohammad

[Zlatko]

mohammad,
have a look here http://www.rcgroups.com/forums/showthread.php?t=300240
direct link to the "UFO" here http://www.planemodel.com/VCR/UFO.htm last picture there shows 3 electro-mechanical gyros. I think this is what Richard Tunstal is refering to. I can't help you with info on that though but at US$36 it may be worth hacking.
A "few" years ago there was a micro-helicopter available that had a mechanical gyro but cant remember the name or maker. It aparently had a inertial slider that controlled the pitch of the tail rotor to keep it stable. Perhaps someone else would remember this one?
Cheers and Good Luck

Ahhh, found it ! Its a LiteMachines Model 116, still in production. Their site doesn't have a direct link but go here http://www.litemachines.com/model_116.swf and move the mouse pointer over the second picture on the bottom ( the one with the tail rotor ). It's a "patented Arlton gyro stabilizer" .

[mohammad_sa39]

Zlatko, thanks for the links but i think UFO maker could use from for rotor and then the UFO dont need for any gyro!what gdo you think.

how that" inertial slider " works?

but i have an else quetion, isnt it possible build a heli without any tail and tail rotor and use from a thing such as a mechanical gyro for make it stable?
is this a stupid question!?

[coaxial-gyro]

Zlatko, thanks for the links but i think UFO maker could use from for rotor and then the UFO dont need for any gyro!what gdo you think.

how that" inertial slider " works?

but i have an else quetion, isnt it possible build a heli without any tail and tail rotor and use from a thing such as a mechanical gyro for make it stable?
is this a stupid question!?

Indeed weighted blades on a helicopter overwelm to a point of total gyro stabilization as so a ''monkey spinning a umbrella to'. I'm just intreasted as of hearing of producing a group of gyro systems to propelle your self trouble free. I've been told of a German bus with a giant gyro disk that has to reach required RPM before moving along ! .

[Comatose]

You could use strain gauges on your rotor mount somewhere and use your entire rotor as a gigantic rate gyro. I haven't tried this, but it could probably be made to play. You'd need a tach on your rotor and a microcontroller running the math at least.