Electric Motors: Old 9V vs. PF

[DrJB]

Per the 'intense' bidding often seen on eBay, the old 9V electric Motors are still in high demand. Used, they often sell for over $20.00 a piece. This is higher than what TLG charges for both the Medium PF ($7.90) and XL PF ($15.00). Furthermore, with a conversion cable ($2.99), one can use all the old 9V power supplies. I bet the reason such motors are in high demand got nothing to do with their performance (e.g. Philo's study). The question I have is: How do you explain such demand for an outdated/used and more expensive motor? ... Is this pure sellers/buyers 'ignorance' of the new motors, or something else?

[piterx]

i don't know really...the only application i found for my old 9v motor is to make a fan...lol

[paul_delahaye]

I don't know either, but I need to buy an old 9v motor to replace the jammed one on my barcode truck which I bought the other year.

[Junpei]

piterx are you talking about the 2838 motor? Its 2000+ RPM speed makes it really fun to screw around with, and you can get them for $3 apiece.

I think the square 9v motors actually have pretty good performance, though.

[piterx]

yeah i know it has lot of rpm....i've tried to use it to make a vehicle powered by a propeller but it couldn't move :(

the propeller i have makes only a lot of wind XD

i should get the parts zbjl was using for his deltawing test one day...

[allanp]

The 2838 motor has more power than the barcode truck motor and almost as much as the pf-M motor when geared down right. That and the buggy motor are my favorite motors.

[Bricktrain]

I would say it is more likely for those with mindstorms RCX sets and other older sets to keep them working.