long or short shaft for sib?

ickleric · 26 March 2009, 09:00

can you use long or short shafts on SIBs? as when looking for one on ebay most tend to have short shafts, but one i have come across has a long shaft, would that work ok?

howy · 26 March 2009, 10:51

Hi,
I dont profess to being an expert in the matter but I am pretty sure that you will need a short shaft engine for a sib.
Howy

Keith Hart · 26 March 2009, 13:19

Depends on which SIB I suppose but the vast majority of SIBs need a short shaft engine.

Keith Hart

m chappelow · 26 March 2009, 13:56

i use a long shaft on my sib as i use the same engine for my hard fishing boat ,my sib would be a little faster with a short shaft ,but one advantage is that in a lumpy sea the prop stays in the water and i never loose power or have the prop airieate or cavitate even in large waves ,usually and different makes of engine differ is that you may get a little spray kicking up at the stern ,on my model tohatsu its there is a flat in the legbut i just cable tye a shaped block of wood to it .gives it that bit more streamlining .down side is its about 6 inches deeper in the water but if your beaching you should have the leg lifted up anyhow, kindest regards mart

jyasaki · 26 March 2009, 16:47

As I recall, my Achilles 14 used a long shaft Honda 40.

Depends on the transom height.

jky

ickleric · 26 March 2009, 19:40

yeah the sib i have seen is a 3.2m with a 5hp merc long shaft.

how much difference in length is there between a short and long shaft?

m chappelow · 26 March 2009, 19:52

Quote:

Originally Posted by ickleric

yeah the sib i have seen is a 3.2m with a 5hp merc long shaft.

how much difference in length is there between a short and long shaft?

with my tohatsu about 5 inches difference between the short and long