RCCrawler Forums

axial-aaron · 04-05-2009, 10:40 PM

i don't really know how a helicopter gyro works but if it does what i think it does, you think it would work in a crawler to help keep it on it's wheels?

Kamikaze · 04-05-2009, 10:48 PM

My boss is a helicopter guru, we talk about this stuff all the time. His consensus is that a gyro reacts to slowly to a motion to help out a crawler. Learn to drive........

Dang......his name pops up first on google....he must be famous

axial-aaron · 04-05-2009, 11:06 PM

Quote:

Originally Posted by Kamikaze

My boss is a helicopter guru, we talk about this stuff all the time. His consensus is that a gyro reacts to slowly to a motion to help out a crawler. Learn to drive........

Dang......his name pops up first on google....he must be famous

i know how to drive

i just thought it would be cool to make an insnane vehicle be even more insane

Kamikaze · 04-05-2009, 11:11 PM

Quote:

Originally Posted by axial-aaron

i know how to drive

i just thought it would be cool to make an insnane vehicle be even more insane

Hehe

O.C.D. · 04-06-2009, 08:38 AM

Gyros on a copter affect controlled surfaces of the blades and servos, etc. You have none of that on a crawler. Simply adding a gyro will not do a thing in my eyes. Hook a gyro to a steering servo and you have what? A counter-balancing effect on the steering?! That negates the point. You would need separate control surfaces, i.e. servos on each side of the axles or attached to limiting straps on the axles. Waste of time.

helhedded · 04-06-2009, 08:46 AM

dammit, I thought this thread was about sandwiches :-(

cartronicshn · 04-06-2009, 08:55 AM

Quote:

Originally Posted by helhedded

dammit, I thought this thread was about sandwiches :-(

engineerjoe · 04-06-2009, 08:58 AM

Gyros on fast cars can be used to control drifting and keep cars going in a straight line. I've actually been thinking of trying one in my slash.

On crawlers I don't really see a need for one at all

cartronicshn · 04-06-2009, 09:04 AM

Quote:

Originally Posted by engineerjoe

Gyros on fast cars can be used to control drifting and keep cars going in a straight line. I've actually been thinking of trying one in my slash.

On crawlers I don't really see a need for one at all

I've heard about these on drift cars, do you own one? i have a drift car and was thinking about trying one, although i have no idea what kind of gyro to use, sorry for the threadjack.

JohnRobHolmes · 04-06-2009, 09:05 AM

You could build a self balancing rig if you wanted. Not much use for crawling, but it would be cool anyway.

Terranaut · 04-06-2009, 10:27 AM

I've used or dealt with a number of heli gyros and one thing I've learned is that they work well for their intended purpose, but usually do not so well (if at all) for any other use. Has to do with the way they are tuned specifically for heli dynamics and installations.

Not to discourage you though. You could try checking out the robotic hobbyists 'cos they get off on this kinda stuff. Or you could pick up a cheap basic gyro like the GWS PG-03 http://www3.towerhobbies.com/cgi-bin/wti0001p?I=LXMSF8 and just experiment with it.

Go ahead, have some fun!

Cheers.

gimpygolden · 04-06-2009, 08:03 PM

HPI actually makes(re-brands) a gyro for drift cars
http://www3.towerhobbies.com/cgi-bin...&I=LXMVE1&P=ML
I'm planning on using one on my 73mph OFNA 1/8 onroad to help keep it in a straight line.

Mr.Slave · 04-06-2009, 08:07 PM

mhm gyros.

Bigcatnearmiss · 04-07-2009, 02:12 AM

Got an interesting idea (free feel to point and laugh), what about having an extra servo that could automatically shift weight from one side the axle to another. Kind of like an abacus or something. I could see having weight shifted toward the wheel highest in the air could prevent roll-overs. hummmmm

Cheers,
DC

clodbuilder99 · 04-07-2009, 03:34 AM

Quote:

Originally Posted by Mr.Slave

mhm gyros.

X2! UUUUmmmmm............Looks Good!!

axial-aaron · 04-07-2009, 08:30 AM

ok...maybe not a helicopter gyro but maybe some other type of gyro. it just seems like a cool idea. got it from changing the tire on my bike(spin it then try to flip it over)

Terranaut · 04-07-2009, 09:31 AM

Aaha!! I think I get the drift. You want the rock steady stability of a spinning wheel gyro to prevent the rig from rolling over? I believe it's been done on ships and trains before. There are some issues with the idea, it would take a page or three to explain, and I'm no expert.

I can tell you that model heli gyros these days are solid state, not spinning wheel, so they have no inherant stability themselves, they are just a rotation rate sensor. They could function through another mechanism, but you'll have to get creative!

Cheers.

axial-aaron · 04-07-2009, 08:48 PM

i read somewhere that the old rc helicopter gyros were mechanical gyros(spinning flywheel, inside i guess). would this be sufficient?

derangboy · 04-07-2009, 09:01 PM

Interesting idea. I had the 'ol brass wheel gyro in mind when I saw the thread title. Powered by a small brushless motor and actuated by a servo, it could be used to counteract motion on a certain axis. To manipulate it manually would be quite a feat of co-ordination, but if you could program it to kick in at the tipping point and buy yourself a half second to keep from flipping, things could get interesting!

durango#95 · 04-07-2009, 10:03 PM

Quote:

Originally Posted by axial-aaron

ok...maybe not a helicopter gyro but maybe some other type of gyro.

Yeah, like this one, only no tomatoes for a lower COG

04-05-2009, 10:40 PM	#1
axial-aaron Newbie Join Date: Feb 2009 Location: canada Posts: 31	gyros? i don't really know how a helicopter gyro works but if it does what i think it does, you think it would work in a crawler to help keep it on it's wheels?

04-05-2009, 10:48 PM	#2
Kamikaze I wanna be Dave Join Date: Oct 2005 Location: Columbia TN Posts: 6,154	My boss is a helicopter guru, we talk about this stuff all the time. His consensus is that a gyro reacts to slowly to a motion to help out a crawler. Learn to drive........ Dang......his name pops up first on google....he must be famous

04-06-2009, 08:38 AM	#5
O.C.D. RCC Addict Join Date: Feb 2008 Location: Hiatus..sutiaH Posts: 1,620	Gyros on a copter affect controlled surfaces of the blades and servos, etc. You have none of that on a crawler. Simply adding a gyro will not do a thing in my eyes. Hook a gyro to a steering servo and you have what? A counter-balancing effect on the steering?! That negates the point. You would need separate control surfaces, i.e. servos on each side of the axles or attached to limiting straps on the axles. Waste of time.

04-06-2009, 08:46 AM	#6
helhedded I wanna be Dave Join Date: Nov 2007 Location: Memphis Posts: 4,786	dammit, I thought this thread was about sandwiches :-(

04-06-2009, 08:58 AM	#8
engineerjoe Rock Crawler Join Date: Jan 2006 Location: SUPERMOTO heaven Posts: 695	Gyros on fast cars can be used to control drifting and keep cars going in a straight line. I've actually been thinking of trying one in my slash. On crawlers I don't really see a need for one at all

04-06-2009, 09:05 AM	#10
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	You could build a self balancing rig if you wanted. Not much use for crawling, but it would be cool anyway.

04-06-2009, 10:27 AM	#11
Terranaut Quarry Creeper Join Date: Sep 2008 Location: Kuala Lumpur, Malaysia Posts: 372	I've used or dealt with a number of heli gyros and one thing I've learned is that they work well for their intended purpose, but usually do not so well (if at all) for any other use. Has to do with the way they are tuned specifically for heli dynamics and installations. Not to discourage you though. You could try checking out the robotic hobbyists 'cos they get off on this kinda stuff. Or you could pick up a cheap basic gyro like the GWS PG-03 http://www3.towerhobbies.com/cgi-bin/wti0001p?I=LXMSF8 and just experiment with it. Go ahead, have some fun! Cheers.

04-06-2009, 08:03 PM	#12
gimpygolden Pebble Pounder Join Date: Dec 2005 Location: Ontario,Canada Posts: 106	HPI actually makes(re-brands) a gyro for drift cars http://www3.towerhobbies.com/cgi-bin...&I=LXMVE1&P=ML I'm planning on using one on my 73mph OFNA 1/8 onroad to help keep it in a straight line.

04-06-2009, 08:07 PM	#13
Mr.Slave Quarry Creeper Join Date: Aug 2008 Location: back where I belong Posts: 251	mhm gyros.

04-07-2009, 02:12 AM	#14
Bigcatnearmiss Newbie Join Date: Feb 2009 Location: Norcal, Davis Posts: 44	Got an interesting idea (free feel to point and laugh), what about having an extra servo that could automatically shift weight from one side the axle to another. Kind of like an abacus or something. I could see having weight shifted toward the wheel highest in the air could prevent roll-overs. hummmmm Cheers, DC

04-07-2009, 08:30 AM	#16
axial-aaron Newbie Join Date: Feb 2009 Location: canada Posts: 31	ok...maybe not a helicopter gyro but maybe some other type of gyro. it just seems like a cool idea. got it from changing the tire on my bike(spin it then try to flip it over)

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04-07-2009, 09:31 AM	#17
Terranaut Quarry Creeper Join Date: Sep 2008 Location: Kuala Lumpur, Malaysia Posts: 372	Aaha!! I think I get the drift. You want the rock steady stability of a spinning wheel gyro to prevent the rig from rolling over? I believe it's been done on ships and trains before. There are some issues with the idea, it would take a page or three to explain, and I'm no expert. I can tell you that model heli gyros these days are solid state, not spinning wheel, so they have no inherant stability themselves, they are just a rotation rate sensor. They could function through another mechanism, but you'll have to get creative! Cheers.

04-07-2009, 08:48 PM	#18
axial-aaron Newbie Join Date: Feb 2009 Location: canada Posts: 31	i read somewhere that the old rc helicopter gyros were mechanical gyros(spinning flywheel, inside i guess). would this be sufficient?

04-07-2009, 09:01 PM	#19
derangboy Newbie Join Date: May 2008 Location: Canada Posts: 44	Interesting idea. I had the 'ol brass wheel gyro in mind when I saw the thread title. Powered by a small brushless motor and actuated by a servo, it could be used to counteract motion on a certain axis. To manipulate it manually would be quite a feat of co-ordination, but if you could program it to kick in at the tipping point and buy yourself a half second to keep from flipping, things could get interesting!

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