Quote:
Originally Posted by sanddrag
I have a couple I could sell you. PM me if you are interested.
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Thanks. If we do go this route, I'll send you a message. It may be after next build season starts.
Quote:
Originally Posted by JamesCH95
More than enough to snap a hardened steel output shaft (without shock-loading). Ask me how I know...
In 2005 we used an XRP transmission with two FP motors geared down something like 10:1 or 20:1 in low gear to actuate our arm. Emperical data suggests that output torques of 500-1000in-lbs are doable. One must figure that, at a minimum, they could handle a 775-18 operating at 18V, which in low gear is around 490in-lb of output torque.
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We we're looking at them for a drive system after seeing what 118 did in 2008. I understand that they never changed direction, but that they used one gearbox for the entire drive system. From that data, it doesn't look like more than one CIM is a good idea, at stall they're over 300 in-lbs each.
Quote:
Originally Posted by Jim Zondag
The Drill is a DW980K, although many other drill models will also work.
The XRP drills are good because they are easy to mount with the extension ring for the optional handle.
You can order parts from DewaltServiceNet
http://servicenet.dewalt.com/Products/Detail/DW980K-2
BTW, RS-775 motors will drop right into this drill with no modifications at all if you have the tools to swap the pinion gear. |
That's really nice. I've been reading through the NBD whitepaper, and these look like the perfect gearboxes for an arm/lift. The slow speed can be used to raise a heavy object, the fast speed can be used to move the unloaded arm. Not backdriving and having an adjustable slip clutch is also pretty great.