Re: Ready To Throw My Columbia BF Out The Window...
Posted: Wed Jul 29, 2015 8:00 pm
Well, the new Columbia governor springs arrived today from Ron Sitko.
My first objective was to compare all of them for consistency: all the same length, all holes matching up perfectly when stacked one on top of the other.
The governor springs passed those tests. All of the springs had a very slight bend at the center which is also fine.
I did notice that all of the governor springs had slightly angled ends like this:
________
_______/
And, in fact, the first spring that I installed had to be removed and the ends filed to be like this:
_______
_______|
because the long side of the angled end was hitting the large brass governor drive gear since on Columbia governors that large brass governor drive gear rotates VERY CLOSE to one end of the governor spring.
So, I filed each spring end to remove the angled end. Not a big deal but I would have preferred to simply install the governor springs as is. For what it's worth, I'll mention this to Ron whom I've known and purchased parts from for more than 25 years but I'm reasonably confident there's not much he can do about how the ends of the governor springs are punched.
Anyway, everything else about the governor springs is superb and after I had the ends filed to perfect edges I installed them.
And now...the moment of truth...
Crank up that potent 4-spring motor and closely watch the governor weights begin their rotation...
The weights spun in perfect alignment! BUT...........
The confounded friction disc is warped....dang it.
I know this because I compared this rotating aluminum (pretty sure it's aluminum anyway) friction disc with the one on my other Columbia BF and that one rotates perfectly true.
So, I now know what the problem with my flutter is: a warped friction disc. So, please, if anyone knows how I can get mine trued up so that it spins perfectly true or if you know of someone who has this part please let me know.
Oh well. At least I know what I need for sure now since the weights and springs run perfectly true. I've not called Ron to see if he carries this friction disc but I presume he doesn't.
Any help is sincerely appreciated!
Doug
My first objective was to compare all of them for consistency: all the same length, all holes matching up perfectly when stacked one on top of the other.
The governor springs passed those tests. All of the springs had a very slight bend at the center which is also fine.
I did notice that all of the governor springs had slightly angled ends like this:
________
_______/
And, in fact, the first spring that I installed had to be removed and the ends filed to be like this:
_______
_______|
because the long side of the angled end was hitting the large brass governor drive gear since on Columbia governors that large brass governor drive gear rotates VERY CLOSE to one end of the governor spring.
So, I filed each spring end to remove the angled end. Not a big deal but I would have preferred to simply install the governor springs as is. For what it's worth, I'll mention this to Ron whom I've known and purchased parts from for more than 25 years but I'm reasonably confident there's not much he can do about how the ends of the governor springs are punched.
Anyway, everything else about the governor springs is superb and after I had the ends filed to perfect edges I installed them.
And now...the moment of truth...
Crank up that potent 4-spring motor and closely watch the governor weights begin their rotation...
The weights spun in perfect alignment! BUT...........
The confounded friction disc is warped....dang it.
I know this because I compared this rotating aluminum (pretty sure it's aluminum anyway) friction disc with the one on my other Columbia BF and that one rotates perfectly true.
So, I now know what the problem with my flutter is: a warped friction disc. So, please, if anyone knows how I can get mine trued up so that it spins perfectly true or if you know of someone who has this part please let me know.
Oh well. At least I know what I need for sure now since the weights and springs run perfectly true. I've not called Ron to see if he carries this friction disc but I presume he doesn't.
Any help is sincerely appreciated!
Doug