Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
<Face Palm>
Sun Jan 29, 2012 10:56 pm
dyrodium Experienced Roboteer
Joined: 24 Aug 2004
Posts: 6476
Location: Sydney
Rofl.... maybe by surface...
I think considering both banebots and RMP both are terribly unfriendly to OS purchase, and mcmaster doesn't even consider it, something might be worth looking at in future for sure! Certainly only if there's enough demand.
And yeah I can't vouch for VXB's quality, I bought them for my spindle so only time will tell.
Sun Jan 29, 2012 11:23 pm
timmeh Experienced Roboteer
Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
quote:Originally posted by Nick:
<Face Palm>
LOL you did mean trans as in transmission?
Example Jegs want to charge like 3k to send an engine over here but other companies say they have shippers and can ship the same engine for around $400
Just wondered if this was the same thing. _________________ Tim Team Reaper.
Mon Jan 30, 2012 6:24 am
DumHed Experienced Roboteer
Joined: 29 Jun 2004
Posts: 1219
Location: Sydney
I'm looking for a single stage planetary gearbox, with low reduction ratio.
Needs to be about 60mm diameter and handle up to 6000rpm input and 5Nm or so.
Anyone seen something like that? _________________ The Engine Whisperer
- fixer of things
Tue Feb 14, 2012 10:42 am
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
The Banebots P80 gearbox might work - available in 3:1 and 4:1 as a single stage.
The currie gearbox would probably be ideal but as thats only surplus now I think so not really an option for long term production.
For what marathon wanted I was pretty sure you would need to make a custom solution. P80 might be OK but looks a bit small if you are going for reliability. Probably going to have to get custom versions made from out of china.
I think they fit on 300watt+ scooter motors and give you a pretty compact setup. Aaron & Angus have some not sure where they got em from. _________________ Steven Martin
Twisted Constructions
http://www.botbitz.com
Tue Feb 14, 2012 11:43 am
DumHed Experienced Roboteer
Joined: 29 Jun 2004
Posts: 1219
Location: Sydney
hmm, a bit much reduction for this initial use, but definitely handy for some later stuff _________________ The Engine Whisperer
- fixer of things
Tue Feb 14, 2012 11:53 am
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
what about those nice planatary ones for the 885 size motors?
they should be about right for that job i'd think _________________ Mechanical engineers build weapons, civil engineers build targets
Thu Feb 16, 2012 8:47 am
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
if your spending somebody elses money, maxon have geartrains in that range
~$250 a pop though ;->
still awesome quality, and their australian dealer is *really* helpfull might be worth a call _________________ Mechanical engineers build weapons, civil engineers build targets
Thu Feb 16, 2012 8:52 am
DumHed Experienced Roboteer
Joined: 29 Jun 2004
Posts: 1219
Location: Sydney
sweet, I shall look at them further
Some of the Whyachi gearboxes are pretty close too _________________ The Engine Whisperer
- fixer of things
Thu Feb 16, 2012 5:22 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
That Whyachi planetary gearbox looked too large - Terry might be able to do special ratios for you. What sort of reduction are you going for?
Thu Feb 16, 2012 6:56 pm
Nick Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
@ Timeh: Your eight 3/4" Shaft collars arrived today . At an exchange rate of $1.046, they cost a *huge* $13.31. If you can PM me an address, I will drop them in the mail tomorrow and let you know the total with shipping.
Thu Feb 16, 2012 7:19 pm
DumHed Experienced Roboteer
Joined: 29 Jun 2004
Posts: 1219
Location: Sydney
quote:Originally posted by Nick:
That Whyachi planetary gearbox looked too large - Terry might be able to do special ratios for you. What sort of reduction are you going for?
yeah those are actually for another use, which would need a large reduction.
Ideally for the first one a 1.5:1 or 2:1 reduction would do the job (it's an add-on for an existing gearbox) but the shape really only suits planetary gears. _________________ The Engine Whisperer
- fixer of things
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