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       The Unofficial Mamod and Other Steam Forum Forum Index -> Technical tips, Details, Home Builds and Help Me!!
toxx

The Taming of the Gouvernor

H'llo, lasses and lads!  The Wilesco governor is nice eye-candy. What always annoyed me was, that at slower revs the guv's arms will bang against the shaft when centrifugal powers collapse, thus making an ugly, clanking noise. So - lo and behold! - I decided to not cry about it anymore, nor throw rocks at passing cars in frustration, but to do somefink about it. The picture is self-explaining, and I added those neat little captions via "paint". Whaddaya dear friends think about this? I say, it's easy, costs nofink and - it works! Says with kind shakespearial greetings,
Ol' Tom
Nick

Looks like a great idea to me.

I am glad you posted this, because I have a D24 on the way, that needs a new governor. I guess I will consider this modification, to start it off right.
Les

Well done, and probably a cheap fix as well. Thumbs up!
IndianaRog

Tom, very creative solution but it would seem you have locked the governor's arms in the outward position, somewhat reducing the visual attraction (eye candy) factor.

Personally, I would eliminate the brass strip and add a fat rubber O ring held on the shaft by your collar with grub screw.  Adjust that collar up the shaft to give the arms room to swing, but letting the O ring cushion them from hitting the shaft or collar.  You might even be able to eliminate the collar and just use the O ring if it doesn't slide on you.

Best of both...quiet but retains swinging arms.

cheers,
Rog
Nick

Did you buy the ring, or make it?
toxx

IndianaRog wrote:
Tom, very creative solution but it would seem you have locked the governor's arms in the outward position, somewhat reducing the visual attraction (eye candy) factor.

cheers,
Rog


Hi, Rog! No, the guv is upside-down on the picture, that's why they look locked, which they're not. The arms can swing freely any way centrifugal laws force them - just not against the shaft.
Here's a pic:
Stilldrillin

Tom, Rog.
You`re both stars!

Why didn`t I think of that for my D20?

More to the point....
Where did I put it after the first firing?    
johnreid

I like it, very clever.
IndianaRog

Ahhhh Tom, makes perfect sense now  

Sometimes little ideas like this touch many of us...thanks for sharing.
Reid

Ah, great! I will do that to mine here too then.  Tom, you are the gubernatorial wizard of whizzing things
(I mean, things that spin, of course!)

I would like also to figure out a way to make the arms' swing-out
more proportional to speed;

that is to say: I want them to not swing all the way out at middling speeds, but only at high speed.

I wonder if they might be constrained a bit by a rubber band or some such thing
so that only at high revs do they go out to the horizontal limit?

 And oh, please tell me how do we caption stuff in Paint?
I can't figure out the program.


Thanks Tom!
Nick

Maybe you could attatch a small spring to the balls, that they could pull against.
Nick

Or wouldn't they be heavy enough?
Reid

ncseverson wrote:
Maybe you could attatch a small spring to the balls, that it pulls against.
Maybe I can hard solder a teakettle spout to my nose first  

Seriously, I hope that a tiny rubber band (tie a knot reid, Perfect Glue it, reid) up near the hinging point of the arms
may act as a constraint.
Springs would work but I'd need a pair due to the pivot pin being in the arms' plane of operation.
Nick

ncseverson wrote:
Maybe you could attatch a small spring to the balls, that they could pull against.

I guess that did sound a little painful.  
Les

ncseverson wrote:
Maybe you could attatch a small spring to the balls, that they could pull against.


Wrong forum.  
Reid

Les Marsh wrote:
ncseverson wrote:
Maybe you could attatch a small spring to the balls, that they could pull against.


Wrong forum.  
This is Technical Tips and Help Me!!

I suggest we ammend the forum title, is all:

Technical Tips, Kinks and Help Me!!

Anyone who has ever run afoul of a zipper can well imagine the difficulties presented by spiral springs put anywhere in the vicinity
of the short hairs of the parts that govern us.
toxx

... thanks, dear friends, for your kind words.    Yeah, Reid, Nick me mates, some kind of tighter attachment of the arms, rehaps a spring connection of some sort.   Maybe something like the D32 uses? The arms on this standard guv fly around much too loosely. My little contraption stops the from banging downward against the shaft, but they're still to loose in their left-right moving freedom.

To reduce friction, I also added a teflon washer slashed with thick r/c racing car grease. I'd say it's about 50% quieter now
Les

Yes, brain damage.
toxx

Anyone who has ever run afoul of a zipper can well imagine the difficulties presented by spiral springs put anywhere in the vicinity
of the short hairs of the parts that govern us.


Reid!    
toxx

ncseverson wrote:
Did you buy the ring, or make it?



... sorry, Nick, I overlooked your question. I bought it, or actually, it's been lying around for ages. You can get them in any modeller's store that carries r/c stuff.
johnreid

I wonder if an O Ring might do the same. It might be worth a try Nick.
IndianaRog

toxx wrote:
ncseverson wrote:
Did you buy the ring, or make it?



... sorry, Nick, I overlooked your question. I bought it, or actually, it's been lying around for ages. You can get them in any modeller's store that carries r/c stuff.


Nick, the metal rings with grub screws are available from Towerhobbies.com   They are typically used to retain wheels on axles of RC planes...they come in different ID's for that purpose.  Handy and nicely nickeled.
Nick

I might try John's o-ring first (cheaper), but I need a governor and my D24 first.
Les

ncseverson wrote:
I might try John's o-ring first (cheaper), but I need a governor and my D24 first.


Does help.  
Stilldrillin

O ring?

A piece of 2mm thick rubber, with nail driven through centre, to make tight fitting hole.

Slide onto shaft, then refit locknut etc

Nice blob of HMP grease onto governer and slots.

Looks ok to me!
Steam test this weekend.....

(Maybe).  



Les

Well that was easy enough.
toxx

... perfect! Why did I go through the trouble of drilling holes in brass strips?
Stilldrillin

toxx wrote:
... perfect! Why did I go through the trouble of drilling holes in brass strips?


Tom.
It`s always easier when someone`s gone before!

But you are the brains of the outfit!  
Nick

I'm glad I haven't done mine yet.

Does anyone else have some good ideas?

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