Quote:
Originally Posted by kinetic
Yep, close Brett, not sure where you got the 2:1 from.
(Im assuming you guessed by the sizes of the toothed pulleys?)
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Hahaha, well yeah, it was a guess. 2 isn't far off 1.8
Had a day off last Friday, went and visited a company that distributes some gear products, that I thought were "perfecto" for scopes.
Planetary drives that were perfectly matched to scopes and it's finite movements. Best solution so far, vast devices
The product was made by Faulhaber. German company.
Now considering the sizes, engineering and the precision, the costs weren't as bad as I expected.
The intent, was only to see what products they had, that were good enough for functionality then price would have been an issue.
I'm looking only to see what is out there, rather than the intent to buy (just yet)
I found a size that would have suited the scope, planetary drive, which can cost about $300 and up. (500:1 and rising).
The guy that I was talking to, also had a scope and he motorised it, so atleast finally someone I can talk turkey with. (relief)
But the common problem with all these drives, is "supply".
Had to order from Germany, none kept in Aus.
I've been in a very large business for nearly 20 years, and have grown up on the words of "Can't sell from an empty wheelbarrow" (from the GM).
I find this too common of an occurance in Aus with O/S sourced parts.
Hence local products will get the nod if any.
So the concept is, either have a crack at the "smallparts.com.au" worm gear set (which is the best solution in all aspects ATM from geared POV), or direct drive.
I've also considered the epoxy/plastic threads. But that's more of an alternative.
I'm just working on the actual driveshaft mechanism now.
As it's a Bintel with the newer style brake system, I've been looking at a way to mount it all.
http://farm3.static.flickr.com/2446/...a8ab2b5410.jpg
I've figured out the internal hole is perfectly drilled for a 18mm helicoil.
Didn't want to re-drill a machined surface, if I could help it (didn't want an out of round hole)
Then I can use a 18mm bolt, and mill it down somehow to a point where I can make stuff fit to it.
It's just that I am not trying to bugger up the brake system whilst making a driveshaft that works, so I can independantly move the brake cover on the outer thread without an issue.
Once the shaft is mounted, it will be easier to see how to mount a drive.