new propeller design

[ashley needhamParticipant @ashleyneedham69188]

Whilst on holiday and browsing the Canal boat magazine in the cottage mag rack, i saw an advert for  “AXIOM” propellers.

 

This may, or may not be news to readers, but as a prop, its certainly different, and great things are claimed for it.

 

Check out “axiom propellers.com or something similar, from memory.

 

The blades are rectangular, have a cutout near the boss, but the main feature is the constant blade shape, none of yer spirally variable camber here….the patent says “approx 60 degrees at either edge going to 45 degrees for the centre section…. it is claimed to eliminate prop lift, decrease cavitation and dramatically increase reverse thrust.   It has square tips??  Cor !  excuse me while I sit down.

 

Actually,  I needed a sit-down after trying to decipher the patent application

 

Needless to say its expensive….wonder what a model one would perform like??

 

 I have a book on this post….20 views max and no replies!!

 

Ashley             (has no facebook friends) 

 

nb most views on forums centered on the cost and susceptibility to damage..it seems that there is loads  of junk in canals, and shallow with it, and bashing your prop against shopping trollies/bikes/bags  is a regular occurrence and with a bog standard prop being in the low hundreds and an AXIOM being £650 plus…….

 

 

[ashley needhamParticipant @ashleyneedham69188]

[Trevor HollowayParticipant @trevorholloway99134]

Looks to me like a variation on a theme, maybe it would be interesting making your own props to see the differences in designs (if you can notice them).

See, there is a reply !

[Colin BishopModerator @colinbishop34627]

Looks a bit like those things Brunel used to screw on the back of his ships….

I made a model propeller that looked a bit like that once although it wasn't intended to which is why I buy them now.

Colin

[Bob Abell 2Participant @bobabell2]

I also made a propeller like that once and it drives Great Eastern along, quite nicely!

Capt B

[TelstarParticipant @telstar]

Colin Here's a reproduction of Brunell's prop on ths SS Great Britain, At Bristol

[Author]

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