Ive watched them drop from over $1000nz to $299nz in 10 years, with definite improvements in design and quality. This particular model is now Series 3. all the defects that I knew of from the last decade are fixed.
*The plastic prop hub is now cast alloy. blade attachment has improved
*The twin bearings that flogged out the housing are now replaced with one larger double race bearing.
*The Brushes and slip rings now far larger and thus should not get too hot.
*General quality of the alternator, fittings and blades are also vastly improved over earlier and far more expensive examples.
Link to similar currently available 24volt version- https://www.trademe.co.nz/a/marketpla...
I purchased this one for $299nz us$160. from another company that is not currently listing them- https://www.trademe.co.nz/a/search?me...
In up coming videos I'll improve the moisture sealing, paint finish durability and brushes will be improved before I mount it and test it for a week or so before starting upgrade mods in future videos.