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Re: FORKLIFT HELP?
We used Drylin N Igus slides for our forklift last year. Worked decently, we did have some issues with the plastic sleeves on the carriages cracking. The major reason for this was that our rigging wasn't evenly tensioned between the two sides, so the lift would tilt to one side as it went up. Additionally they way we contstructed it made it a pain to get in there to replace the carriages, you'll definitely want to take that into account in your design as well.
We're doing a similar forklift design this year, correcting some of the mistakes we made last year. We decided to go with some MUCH beefier slides (Drylin W -- MUCH MUCH heavier though), we're also using cascade rigging over continuous, and pulling the lift down as well as up. We're also using a pneumatic to actuate the whole thing rather than a motor because it simplifies the system a lot. We're only using our arm (the poker as we call it) to knock balls off the overpass at the beginning and end of matches, so we'll have plenty of time to recharge our accumulators during the match.
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