Why is my MJ1200 with SureFlow mod doing this?

[Myka]

Originally Posted by mike31154

It is possible that the propeller may be fitted on to the shaft the wrong way around though.

Mike, you are BRILLIANT!!

The prop when it spins one way rams right into the tab, but if it goes the other way because the prop is slanted if it hits the tab it just slides up it.

I think it's actually messed up and spinning the wrong way because it took some serious efforts to get the propeller off which makes me think that no one turned it around. BUT, it worked!!! Well, it's been running for about 5 mins and hasn't messed up yet. So...fingers crossed. I'll see how it runs, but it's doing ok now. Has a bit of a vibrating hum to it though...but I think once my MH setup gets here and the fans are going I wouldn't hear the hum of this powerhead. Every once in awhile it puts out a fairly loud buzz. This is my first try at these SureFlow kits...so far, thumbs down. Noisy! (even at the best of times...maybe better when they are new though)

I didn't get the smaller black propeller, which I am a bit disappointed because I wanted to put the smaller one in a 900 and use the bigger one in the 1200. Extra greedy.