I prefer sinterbronze. And if space and/or weight won't allow, SKF sinter steel/oilbushings.
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Team Pasty Build Diary: Loki
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How about using a steel tube with an aluminium core to save weight? you can get a much better polish on steel or you could use needle roller bearings, which will probably be easier to fit in the wheel hubs that regular ball bearings. More work for sure, but guaranteed low friction.
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The chassis is 381 mm long 231 mm wide, going to have to make it wider to accommodate a Burkert valve. Everything you see (apart from the motor mounts and legs which are 6mm 6082 ally) will be 3.3 mm hardox. Yep laser cut MDF, smells lovely! There will be also be 15mm HDPE down the sides and back, 3.3 mm hardox scoop, 6 mm HDPE top. Overall 492 x 355 x 133.
Thanks for the responses
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