Phillip, Car alternators might turn at 5000 rpm when charging starts; what's yours? The wheel might turn at 50 rpm. That's a 100 to one ratio. Usually step-up is limited to 6:1, requiring multiple stages. At eight feet tall, consider a wood pulley rim drive of 96 inches.
A 2:1 pulley increaser (16 inch driving 8 inch, & 8 inch has twice the rpm of the 16 inch) in between would then reach 96/8*50 rpm = 600 rpm on the 8 inch pulley. The alternator pulley might be 2 inches. 8/2*600 = 1200 rpm, which would likely be too slow by 4. This is getting too hard. Another 16 inch pulley mounted on the 8 inch pulley shaft turning at 600 rpm could drive a 2 inch that would increase speed by 16/2*600 rpm = 4800, which is in the right range. Takes a lot of parts and belts. This is very rough, but should give you the idea. Might be better to get a different generator with higher volts per rpm. Frank -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] Behalf Of phillip gerard Sent: Tuesday, October 04, 2005 10:06 AM To: [email protected] Subject: [microhydro] small hydro electric plant i live on little snow creek.ms. ihave crossties to build a dam i have a good water wheel 4 feet wide,8 feet tall ,12 volt altenater need to know what size pullys to make the alternater turn at the right speed am i in the right group to get help???????? thanks phillip gerard.. Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] ---------------------------------------------------------------------------- -- YAHOO! GROUPS LINKS a.. Visit your group "microhydro" on the web. b.. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. ---------------------------------------------------------------------------- -- [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/microhydro/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
