RE: Homemade monster servos   
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RE: Homemade monster servos - 11/12/2009 4:17 AM   
mooman007uk



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Ok I'm totally lost on electronics but I can see what's going on here . I feel i have to comment due to the negative post that has been given so please hear me out: the human race has moved forward by reinventing what is available even if it means using what's available out there and tweaking it some to improve it; or doing the same thing with less effort, eg a tonegawa servo makes huge torque but for our application...steering...it's slow as molasses, along comes a man called Ian Oddie who takes a look and alters the circuitry and makes it plenty fast enough to work for our application...this is called evolution which means improving on something already there that makes it better for it's given environment..if things don't evolve then they will eventually becomes extinct..I think Darwin might have been on to something here unless you believe in the bible ad verbatim....
rendezvous944 you say reinvent the wheel but you you are totally missing the point here, you don't have to reinvent it cos the concept is sound, however, the first wheel and axle was wooden and by today's standards is totally pants but thanks to people in the past who thought like da mad maori we now have a steel wheel with bearings which improved the basic concept, so all I can say to you rendezvous944 is take your head outta this


and give credit where credit is due, if we all thought like you we'd still be chucking pointy sticks at mammoths...nuff said!!!

carry on the good work maori and don't let pillocks who have no clue deter you.

(sorry foxy I had to vent here i hate to see creativity stymied)


< Message edited by Foxy -- 11/19/2009 2:00 PM >

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RE: Homemade monster servos - 11/12/2009 11:22 PM   
Dirty_Vinylpusher



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Status: offline 		Dont' waste any more time on this person.
He's clearly out to do one thing and one thing only.
Trying to get a reaction by carrying on this way.
All we're doing is feeding his need for attention.


Let's discuss the concept of creating a cheap strong servo instead.





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RE: Homemade monster servos - 11/12/2009 11:26 PM   
mooman007uk



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RE: Homemade monster servos - 11/15/2009 1:45 AM   
Dirty_Vinylpusher



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Status: offline 		Well, I showed my mate the diagram below and he reckons easy peasy.
We looked up some of the components as well and it's all pretty cheap.
Keeping an eye out for a suitable wiper motor.


Hopefully we'll get a chance to give it a go in the next coming weeks.
Will keep you posted of course.







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RE: Homemade monster servos - 11/15/2009 3:41 AM   
da mad maori


 

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quote:

ORIGINAL: Dirty_Vinylpusher

Well, I showed my mate the diagram below and he reckons easy peasy.
We looked up some of the components as well and it's all pretty cheap.
Keeping an eye out for a suitable wiper motor.


Hopefully we'll get a chance to give it a go in the next coming weeks.
Will keep you posted of course.








where did you find your parts DVP?

ive just received all the parts myself for that circuit lol i ordered them from farnell.com.au... nice and cheap
although they didnt stock the 2n2220 trans so i ordered NTE123A as a replacement......

will be interesting to see if this cicuit works

tip; if you can get a wiper motor with an armature stop adjustment screw on it.. theyre better
alittle hard to explain ill see if i can find a pic


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RE: Homemade monster servos - 11/15/2009 3:48 AM   
Dirty_Vinylpusher



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quote:

ORIGINAL: da mad maori
where did you find your parts DVP?



We just did a quick search on the Jaycar website actually.
I'm guessing Dick Smith and the likes would also stock the majority of the bits?

Haven't bought anything as yet just did a quick search to see what was available and how much it cost.


Never heard of this Farnell place but will give it a looksee as well.




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RE: Homemade monster servos - 11/15/2009 4:02 AM   
da mad maori


 

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Status: offline 		make sure it has a bolt/locking nut at the an of the armature like the one circled



some wipermotors are not design to run "backwards" and since we need servos to run both ways, it will help to have this adjustment screw..

the motors gearbox is a worm drive... when they run forward, the armature is forced backwards into the bearing but it is designed for that...
if the motor runs backwards, the armature is forced forwards.... and sits on the screw/locking nut... if it wasnt there it would eventually strip the gears

my wiper motors dont have them and are getting slower when going backwards lol wont be too long before they are toast

so make sure they have that screw....

power window motors are designed to go both ways....
so are rear wipermotors from hatch backs but they have the gearbox they makes it go back forth back forth etc

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RE: Homemade monster servos - 11/15/2009 4:14 AM   
da mad maori


 

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quote:

ORIGINAL: Dirty_Vinylpusher


quote:

ORIGINAL: da mad maori
where did you find your parts DVP?



We just did a quick search on the Jaycar website actually.
I'm guessing Dick Smith and the likes would also stock the majority of the bits?

Haven't bought anything as yet just did a quick search to see what was available and how much it cost.


Never heard of this Farnell place but will give it a looksee as well.





jaycar dont have any of the main parts (trans etc) to them, these parts are concidered "heavy duty" lol.....

http://au.farnell.com/

http://au.farnell.com/stmicroelectronics/bdw93c/darlington-transistor-to-220/dp/1015773?Ntt=1015773

http://au.farnell.com/multicomp/bdw94b/darlington-transistor-to-220/dp/9294449?Ntt=9294449

http://au.farnell.com/vishay/cny17-1/optocoupler-transistor-o-p/dp/1045399?Ntt=1045399

and these ones i was told would be an alternative to the 2n2220
http://au.farnell.com/nte-electronics/nte123a/small-signal-bipolar-transistor/dp/1383691?Ntt=1383691

everything else (resistors, caps etc) can be brought from jaycar...



i havent tried this circuit YET so if it doesnt work please dont blame me LOL

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RE: Homemade monster servos - 11/15/2009 4:20 AM   
da mad maori


 

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Status: offline 		also ive just had my mosfet h bridge tested and she works beautifully no heat at all....
schem coming soon... (it appears to be more powerfull and faster than a trans based circuit too)
stay tuned



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RE: Homemade monster servos - 11/15/2009 4:47 AM   
Dirty_Vinylpusher



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Status: offline 		*Stays tuned*





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RE: Homemade monster servos - 11/15/2009 4:54 AM   
da mad maori


 

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quote:

ORIGINAL: Dirty_Vinylpusher

*Stays tuned*






it might be a week away yet

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RE: Homemade monster servos - 11/15/2009 4:57 AM   
da mad maori


 

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Status: offline 		OMG!!!!! he is everywhere!!!! like an infectious disease

refuses to show pics or vid people ask for...... makes ya wonder

http://www.clodtalk.com/viewtopic.php?f=6&t=22696

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RE: Homemade monster servos - 11/15/2009 5:04 AM   
Dirty_Vinylpusher



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Status: offline 		At least he's showing pics over there.
If those ARE his trucks he's a real talented builder and I don't understand why he was such a jerk when posting here?












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RE: Homemade monster servos - 11/15/2009 5:13 AM   
da mad maori


 

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Status: offline 		i doubt they are his... the thread has been locked too lol

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RE: Homemade monster servos - 11/15/2009 5:14 AM   
Dirty_Vinylpusher



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Didnt' see that.

Nice trucks though, whoever built them.


Oh and regarding the wipermotor and the bolt and stuff - good info, I'll remember that.





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RE: Homemade monster servos - 11/15/2009 3:38 PM   
rendezvous944


 

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quote:

ORIGINAL: da mad maori

i doubt they are his... the thread has been locked too lol


 Never ASSUME anything without 100% proof. You could be ???? I don't see your name on it??? But those builds look FREAKIN  AWSOME !!!!! compared to yours. check out the other treads.

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RE: Homemade monster servos - 11/15/2009 9:21 PM   
Dirty_Vinylpusher



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Status: offline 		Well that just confirmed my suspicions about who this person is.










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RE: Homemade monster servos - 11/15/2009 11:37 PM   
da mad maori


 

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Status: offline 		ah i see.... so its you.......... makes sense...

Listen ive read alot of threads where you have come into them to cause trouble with other user names... alot of these threads are started so people can exchange ideas and share methods,
You are obviously not interested in doing any of those so would you please show some decency and respect and NOT POST IN MY THREADS...... weather it be constructive or not... you obviously have trouble telling the two apart....

you offer NO help to the topic at hand, your not willing share your obvious infinite wisdom you keep telling us you have, so if you cant offer anything useful, please go on someone elses thread

THANK YOU!!!!!

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RE: Homemade monster servos - 11/16/2009 10:08 AM   
Dirty_Vinylpusher



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Status: offline 		What he said





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RE: Homemade monster servos - 11/17/2009 7:45 PM   
rc-cellar


 

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Status: offline 		Wow, pretty harsh on rendezvous. Will I get the same treatment?
I'm in 100% agreement and will repeat what he said:

When all else fails you will realize you should have just bought a tone servo.
Problem solved. Great servo.


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RE: Homemade monster servos - 11/17/2009 9:17 PM   
Dirty_Vinylpusher



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Status: offline 		Ok.
Would you go on to the electric forum and start telling everybody to get a nitro or 2-stroke car instead?
Would you run in to a church and yell "There is no god! You're all wasting your time!"?
I bet you wouldn't.
When you saw this thread clearly named "HOMEMADE monster servos" and decided to tell everyone that what we're doing is pointless, what did you expect the reaction to be?
Us saying "Oh, actually, you're right... How silly of us - we'll just forget about it."?


When we've figured this out (and we will) and have built a giant servo for about $100, I think we'll be pretty happy.
The difference with us homebuilders is that we keep trying until it's working.
We find a way to create something that suits our needs and we enjoy doing so.

You keep talking about this "problem".
There is no problem, only a challenge to construct something that works.














< Message edited by Dirty_Vinylpusher -- 11/17/2009 10:09 PM >

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RE: Homemade monster servos - 11/18/2009 12:13 AM   
rc-cellar


 

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Status: offline 		DaMad here's your post on the same subject from January:
http://www.rcuniverse.com/forum/m_8383737/anchors_8386245/mpage_1/key_/anchor/tm.htm#8386245

Sounds like zero progress in 11 months... and yet you have time to go investigate posters you disagree with. tsk tsk
And DVP, a 3 paragraph rant about what?


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RE: Homemade monster servos - 11/18/2009 2:34 AM   
da mad maori


 

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RC-Cellar your obviously not familiar with this posters history
im not the one going around disgreeing im simply putting up ideas that others that cant do it are disagreeing with.. if you disagree then why are you posting on here??


When all else fails you will realize you should have just bought a tone servo.
Problem solved. Great servo.

i agree... but who said we've failed??..."problem solved" What problem?? i see youve tryed and failed... does that mean it cant be done??


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RE: Homemade monster servos - 11/18/2009 2:43 AM   
da mad maori


 

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Status: offline 		ps ive seen your homebuilt rcs.. im very impress i like your work...

surely you would understand the whole homebuilt v brought?

< Message edited by da mad maori -- 11/18/2009 3:52 AM >

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RE: Homemade monster servos - 11/18/2009 2:49 AM   
Dirty_Vinylpusher



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quote:

but who said we've failed??..."problem solved" What problem?? i see youve tryed and failed... does that mean it cant be done??



Haha well put.






< Message edited by Dirty_Vinylpusher -- 11/18/2009 4:10 AM >

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