lo-fi Posted April 9, 2016 Share Posted April 9, 2016 I'd love a capstan winch for my 109, but don't want to pay the silly money they're going for. Luckily, I have CAD and fabrication skills, so here goes making one! At the suggestion of another forum user, I've started using onshape.com. It's like free solidworks, dropbox and github all in one! With an hour of fiddling, this is the result: This is the only tricky part to make. I'll get the pattern 3D printed - probably by shapeways.com as I've used them many times and aways been pleased with the result - then cast in alloy by a local foundry, or have a go myself (I've watched far too many MyfordBoy videos). I have a lovely 62/1 sealed worm drive gearbox lined up to make it all work. I'll keep this thread updated as my experience with onshape.com progresses. I'm certainly very impressed so far! 1 Quote Link to comment Share on other sites More sharing options...
Lewis Posted April 9, 2016 Share Posted April 9, 2016 Great project! I'm looking forward to seeing your progress Quote Link to comment Share on other sites More sharing options...
miketomcat Posted April 9, 2016 Share Posted April 9, 2016 I'm watching with interest Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 9, 2016 Share Posted April 9, 2016 Me too! Great project I have no need for one, but love seeing people push boundaries a little, and always willing to learn. Quote Link to comment Share on other sites More sharing options...
skauldy Posted April 9, 2016 Share Posted April 9, 2016 Look forward to seeing this. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 10, 2016 Share Posted April 10, 2016 Love seeing stuff built rather than bought! Looking forward to progress Quote Link to comment Share on other sites More sharing options...
ejparrott Posted April 10, 2016 Share Posted April 10, 2016 Toying with the idea myself! Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 10, 2016 Author Share Posted April 10, 2016 Thanks guys, I'll keep the updates coming I was inspired by this guy scratch building a gas turbine for his bike: http://jetandturbineowners.proboards.com/thread/734/building-ju-02-gas-producer As you can see, his 3D print and home casting work rather well! His other thread for the MK1 turbine and bike is long, but well worth a skim through too. Dude got skills: http://jetandturbineowners.proboards.com/thread/53/landspeed-bike-diy-gas-turbine Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted April 10, 2016 Share Posted April 10, 2016 Would it not be cheaper to just clatter that out of solid? Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 10, 2016 Author Share Posted April 10, 2016 It's possible, and something I can explore once I've finished prototyping. When I'm happy with the design, I'll order one of the quick and dirty prints to see how it looks in the solid, tweak it if needed and look at options. Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted April 10, 2016 Share Posted April 10, 2016 Happy to help..... Got 2 loverly CNC lathes at work... Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 10, 2016 Author Share Posted April 10, 2016 Ohh! Thanks, I'll give you a shout for a price when I'm happy with the design Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted April 10, 2016 Share Posted April 10, 2016 No worries. Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 11, 2016 Author Share Posted April 11, 2016 Development with onshape is incredibly fast! Really getting tha hang of it now. Another couple of hours and I've modeled the mounting flange and output shaft of the gearbox (to scale) and created a much better winch drum model. Drum support bearings need to be arranged, which is why I've not touched the inside of the drum yet. I have a few ideas, but I'll need to settle on which bearings to use and how to arrange, mount and secure them before moving on to that. Quote Link to comment Share on other sites More sharing options...
steve b Posted April 11, 2016 Share Posted April 11, 2016 Would it be possible to base the drum bearings around a LR stub axle and bearing set up ? Already proven for load and bearing design And loving the whole idea of making your own , centre of my comfort zone Steveb Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 11, 2016 Author Share Posted April 11, 2016 The thought had occurred Going to rake one out of the garage tomorrow to measure up. I used a landy stub to mount my 12hp hoover impeller, which was very successful! Quote Link to comment Share on other sites More sharing options...
steve b Posted April 11, 2016 Share Posted April 11, 2016 I manufacture fans in Hardox for blowing sawdust , 15kw motors , how did you get on balancing it ? Steveb Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 11, 2016 Author Share Posted April 11, 2016 Oh cool! Must similarly beastly! The balancing was funny... As it fits on a landy hub, I figured the tyre fitting place would be able to fit it on their machine. So I popped down the road to my local place, answered the inevitable "what on earth is that?" questions, and they stuffed it on the balancing machine with the appropriate arbor and span it up. The guy glanced at the display, which was reading 0.00 0.00, took it off and said "that's perfect mate. Good job". I'm sure the tyre balancer isn't *that* accurate, but it runs true and smoothly at any rpm. The circular parts were cut on a home made circle cutting jig for my plasma cutter and the fins were carefully machined stacked together and weighed after to verify they were identical. I made a jig to hold it all, tacked it carefully and thoroughly before seam welding, and it came out as true as you like. Fun project, that. Quote Link to comment Share on other sites More sharing options...
zim Posted April 12, 2016 Share Posted April 12, 2016 Would you like to buy mine ? ? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted April 12, 2016 Share Posted April 12, 2016 Well you certainly seem the chap to take on this kind of thing, lovely work! Quote Link to comment Share on other sites More sharing options...
simonr Posted April 12, 2016 Share Posted April 12, 2016 For the amount Shapeways will charge to print something that big - you might be better just buying a printer! Si Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 12, 2016 Author Share Posted April 12, 2016 Cheers Bowie, just love this kind of stuff Hehe. I have toyed with the idea of buying one, Simon, but still serious dollar for something with decent resolution. One of my clients has one, so I might see if we can work out a deal... Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 12, 2016 Share Posted April 12, 2016 Try submitting it on 3D hubs for a price. A colleague uses it regularly (with his printer). Quote Link to comment Share on other sites More sharing options...
lo-fi Posted April 12, 2016 Author Share Posted April 12, 2016 Now that's something I hadn't found on my travels round the internet. Thanks, I'll definitely be looking into it! Quote Link to comment Share on other sites More sharing options...
Soren Frimodt Posted April 12, 2016 Share Posted April 12, 2016 Wow lo-fi, how did I miss this?? Really interesting project, would never thought I'd ever actually see someone wanting to make their own Capstan winch! hats off though, really, in these days of super fast mechanical winches not many will be thinking of Capstans Oh and the whole idea of fitting a winch drum on a LR hub would never work Quote Link to comment Share on other sites More sharing options...
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