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Forum Index : Windmills : Simple yaw ’brushes’
| Author | Message | ||||
| KiwiJohn Guru  Joined: 01/12/2005 Location: New ZealandPosts: 691 |
If you feel you really must have a means of allowing your small (e.g. stepper motor?)mill to rotate about the mast without the wires twisting you could use one of these: 
This is a 1/4" stereo phono jack which you can buy just about anywhere and you need its matching socket. Mount them so that they are aligned with the axis of your yaw bearing and the jack will turn in the socket as the mill yaws. OK, it wont last forever but it will last quite a while and they are not expensive! |
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Gill Senior Member  Joined: 11/11/2006 Location: AustraliaPosts: 669 |
Now that's not a bad idea John. Very clever. Why are all the good ideas so simple? I see in Jcar they sell a 4 wire plug though I can't seem to find a socket to match. was working fine... til the smoke got out. Cheers Gill _Cairns, FNQ |
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| KiwiJohn Guru Joined: 01/12/2005 Location: New ZealandPosts: 691 |
Even better if you can find some WWII radio bits as some field sets had very robust jacks and sockets with 3 or 4 contacts. Old manual telephone exchanges had really heavy jacks and sockets for the operators' headsets too but some had multiple pins so are not the ones to look for. |
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| KiwiJohn Guru Joined: 01/12/2005 Location: New ZealandPosts: 691 |
'Cos they come from simple minds?  |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5117 |
The old Telecom gear had all silver coated contacts. Silver is harder than gold so would last longer. I remember I had to manually clean and adjust relay contacts as part of my apprentiship. They would go green with time, that was ok, the important thing was to get the contact pressure and wipe correct. When the contacts closed where were designed to wipe against eachother, keeping the contact area clean. Some of the gear was over 50 years old and worked like new. Good idea John. The whole thing could be housed in an upturned plastic cup/cap to keep the water out. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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