Best Quality Custom Pulley Set while they last!
Build your own reliable and flexible Generator set based on the two bearing generators that has been in production for more than 100 years for a reason. It’s the product Mad Max would pick every time, because you can trouble shoot the problem, change out the prime mover and so much more with ease.
Who sells this type of head? Everyone from Marathon, Winco, Harbor Freight, and more.
Our Hemisphere uses 60hz as our standard. RPM and frequency are tied together, this means we MUST turn our two pole generators at 3600 RPMs in order to provide 60hz with the typical 2 pole generator we find for sale from many suppliers. You may have read my article about rescuing a generator section from a scraped gasoline generator and building a new end to carry the second bearing, It’s fairly easy for a DIYer with basic machine skills to do.
There are a number of old Industrial Kohlers that were rated to turn 3000 RPM, and now we can find the small single cylinder diesels made by a number of companies including Kohler! some are not cheap, others are thrifty with mixed reviews, the Yanmar clone is popular with some, and I have a few customers with 300 plushours on them, that’s more than a lot of people will put on them in a life time for standby generator operations, like backup to storms for the critical loads in your house. Saving a freezer full of beef one time, along with the contents of your fridge can make you feel like it was all worth your effort to build a Generator.
Some of these engines are power rated at 3600 RPMs, many of us like to cut them back to 3000, for the sake of longevity and noise reduction. The 5.0 inch serpentine pulley on the engine, and the 4.2 inch pulley on the two pole generator can put you in the sweet spot, and if you must have full rated power, 4.2″:4.2″ will allow your engine to run at full speed, and will allow you to produce higher KW output if your generator is capable of producing same.
4.2 and 4.1 pulleys are $59 plus shipping
5.0″ are $79 Plus shipping
The combo 5.0″ and Either 4.1 or 4.2 inch are $140 >Delivery Included< in the USA
Utterpower Pulleys use the very easy to find QD SK bushings, and as I say elsewhere, once you use a taper lock bushing, you’ll never mess with other solutions when reliable operation is the goal.
I do stock 42mm and 38mm bushings for the ST generator heads, I will beat any price you find on these, and other sizes are found at Grainger and many other suppliers QD-SK is what you ask for..