Need help with nitinol motor Bribe offered

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Subject Author Date Need help with nitinol motor Bribe offered Larry Snyder 07-04-2008  Re: Need help with nitinol motor Bribe offered z 07-04-2008  Re: Need help with nitinol motor Bribe offered Larry Snyder 07-05-2008
Posted by Larry Snyder on July 4, 2008, 3:45 pm Please log in for more thread options HI All. I am developing a motor using super elastic nitinol wire and have problems. Picture at: http://www.pacificsites.com/~snyder/motor.jpg The most frustrating problem is joining the wire together. I bought some tiny stainless steel tubing from Ebay. The idea is to use this as a sleeve and solder/braze it together. It hasn't arrived yet. I have been unable to find small high pressure crimp fittings. The second problem is the wire slipping on the pulleys. I will send anyone coming up with a solution to either of these problems a piece of wire to play with, assuming it is something I can use. Wire description at: http://www.pacificsites.com/~snyder/Ebay/Flexinol%20Test%20Data.htm This wire has a transition temp ~100C. This helps resolving the cooling side. The heating side can be easily insulated with cheap materials(styrofoam). I am hoping to put this on a bicycle and operate with solar power. Any comment/suggestions are welcome. Thanks in advance. Larry Posted by z on July 4, 2008, 4:15 pm Please log in for more thread options > HI All. I am developing a motor using super elastic nitinol wire and > have problems. > Picture at: http://www.pacificsites.com/~snyder/motor.jpg The most > frustrating problem is joining the wire together. I bought some tiny > stainless steel tubing from Ebay. The idea is to use this as a sleeve > and solder/braze it together. It hasn't arrived yet. I have been > unable to find small high pressure crimp fittings. > The second problem is the wire slipping on the pulleys. I will send > anyone coming up with a solution to either of these problems a piece > of wire to play with, assuming it is something I can use. Wire > description at: > http://www.pacificsites.com/~snyder/Ebay/Flexinol%20Test%20Data.htm > This wire has a transition temp ~100C. This helps resolving the > cooling side. The heating side can be easily insulated with cheap > materials(styrofoam). I am hoping to put this on a bicycle and > operate with solar power. Any comment/suggestions are welcome. Thanks > in advance. Larry > > > > that looks very cool. Have you tried coating the pullies with anything? I"m thinking like performix plastic dip (or similar) -- its that stuff you dip your tool handles in. This would give a rubber like coating that might increase your grip. You can just paint it on so its easy to apply. Might wear off pretty fast though.. dono good luck -zachary Posted by Larry Snyder on July 5, 2008, 1:30 pm Please log in for more thread options > HI All. I am developing a motor using super elastic nitinol wire and have > problems. > Picture at: http://www.pacificsites.com/~snyder/motor.jpg The most > frustrating problem is joining the wire together. I bought some tiny > stainless steel tubing from Ebay. The idea is to use this as a sleeve and > solder/braze it together. It hasn't arrived yet. I have been unable to > find small high pressure crimp fittings. > The second problem is the wire slipping on the pulleys. I will send > anyone coming up with a solution to either of these problems a piece of > wire to play with, assuming it is something I can use. Wire description > at: http://www.pacificsites.com/~snyder/Ebay/Flexinol%20Test%20Data.htm > This wire has a transition temp ~100C. This helps resolving the cooling > side. The heating side can be easily insulated with cheap > materials(styrofoam). I am hoping to put this on a bicycle and operate > with solar power. Any comment/suggestions are welcome. Thanks in advance. > Larry HI All. I posted this on several newsgroups and got a lot of responses. I would like to thank everyone for their input. The answers that I like are: capstain/multiple turns around pulleys use tubing for guide and spot weld grooving pulleys for more surface area crimp fittings from fishing supply store idlers/belts to apply extra pressure on pulleys Answers I didn't like: coating pulleys with nonslip stuff- wire pressure too great. will fail too fast. I have notified people with the above ideas and will offer wire only for some other ideas. Thanks for your interest. Larry Similar Threads Posted Using an alternator as a motor September 2, 2008, 12:35 pm Small 3 phase AC motor? March 14, 2008, 7:39 pm WAY OT--How To Remove OB Motor From Boat? August 20, 2008, 1:03 pm Help eliminate my motor wiring ignorance April 18, 2007, 1:54 pm More info for those trying to help with my motor wiring question April 19, 2007, 4:55 pm Specs on an Electric Vehicle motor? March 19, 2008, 5:46 am 280V motor on 230V circuit April 26, 2008, 4:11 pm Furnace fan motor run directly by natural gas combustion ? Why not? February 4, 2007, 4:31 pm multi-speed furnace blower motor September 24, 2008, 2:12 pm Highest torque for lowest watts in the world - brushless motor April 15, 2007, 6:47 am