motor on the ground

hi guys my new permenant magnet motor weighs in at a hefty 40kg,so i want to leave it close to the ground and use a series of drive shafts,but i want to know if there are any other turbine designs that can turn on its axes with the motor/gen on the ground via shafts........big design yes but what i dont want is that 40kg swinging in high winds....

i am getting the following volts from this motor
60v at 1000rpm
34v at 500rpm
24v at 200rpm
12v/17v at 100rpm

not realy sure the watts that it is going to give........
here's on of my old vids from this year showing the motor ;)
http://www.youtube.com/user/MADHELINELL ... i8BKOEeG4c

40kg power plant? WOW. Obviously this is a BIG build. I would consider a helical right angle drive and a shaft down to the ground. You could even consider "gearing" the drive shaft up if your blades are big enough to justify it. With this configuration you wouldn't need to worry about slip rings or any of the other complexities. Simply use tubing for the shaft. The expense of the right angle drive should be more than compensated by the performance improvement.

Fish

http://cgi.ebay.com/HUB-CITY-0220-00101 ... 414b1f74ba

This is prolly a little small, (2.25hp rating), but a drive similar to this is what I am thinking.

Fish

yup i was thinking the same thing......these gears are the best way to go i think....cheer fish4fun....regards helinelly ;)
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[img][IMG]http://i215.photobucket.com/albums/cc50/helinelly/helical.jpg[/img][/img]

heli,

You might consider a "Platform" at the bottom of your (obviously) hollow tower. The "Platform" could House the beasty motor and would eliminate the pulleys. I would do any gearing in the gear box itself. The tension requisite on the pulleys, the cost of the pulleys/belts and the friction losses can and should be avoided if possible.

I am thinking a 6ft x 6ft x6ft platform. This would allow you to work on the motor w/o crouching, and if properly anchored should be more than adequate to support your tower. Or, if you are good with welding, you could make a "pyramid" style base from scrap I-Beams. In either case, direct drive would be simple to implement once constructed.

Fish

wonder it this would work....its a drill right angle attachment......i suppose it would take a lost of torque...maybe and for only £6 at my local diy shop...mmmmm

man what a waste of time these rightangle attachments are for my project turbine........they dont have bearing for smooth running,,,they have slave shaft free bearing wich is no good,,,maybe i could put my own bearing on it...
http://i215.photobucket.com/albums/cc50 ... 510001.jpg

wonder if a slow 90* bend in a piece of water pipe might work here? run a greased steel cable through it with a coupler on each end..or even do the whole run with a cable in a lubed up pipe? think the cable would try to shrink and bind?..have to have it lagged down real good or it would want to get away.yikes!

looks to be a valid area (motor on ground) to have a play with.

dave

Dave,

Don't be stupid. 40kg motor/gen...Spend $500 on the correct gearing. Get it right.

Fish

Heli
Just an idea, but how about the rear axle/propshaft differential out of a rear-drive go-kart or buggy or similar? Those are 90 degree gearboxes. One at top, one at bottom, and come ready-made to slot an old propshaft in between.

Mechanically I can't see a reason why it wouldn't work, but gear losses might be significant.