and does it make a difference in speed or control. Thanks
2007-08-28 14:54:19 · 9 answers · asked by BASSMASTER 4 in Cars & Transportation ➔ Boats & Boating
the transon is only 1ft 4in would i be better off with a 15" or 20" shaft
2007-08-28 15:46:37 · update #1
You want the shaft length that will put the horizontal plate(cavitation plate) just above the prop to be even with the bottom of the boat. Too long will be inefficient and run deeper than needed, and too short will prevent planing of the boat. You want the 15 inch engine.
2007-08-28 15:03:24 · answer #1 · answered by ERIC E 4 · 1⤊ 0⤋
You want the prop to extend to just below the bottom of the boat. If you go further than that, it will be hitting stuff all the time. If you do not go that far, the prop will not have free flowing water coming in from the front (the boat is in the way) and you lose a lot of efficiency. Short shafts are more common but if your boat has a high freeboard, you may need the long shaft.
2007-08-29 13:28:17 · answer #2 · answered by forgivebutdonotforget911 6 · 0⤊ 0⤋
The transom height determines the shaft length. A long shaft were a short shaft should be will create excess drag & result in slower top end speeds. A short shaft motor where a long shaft motor should be will cause cavitation when the prop catches air in lieu of water.
Good luck
2007-08-28 16:01:59 · answer #3 · answered by gejandsons 5 · 0⤊ 0⤋
15
2007-08-28 18:48:55 · answer #4 · answered by fire_inur_eyes 7 · 0⤊ 0⤋
DEFINATELY a SHORT SHAFT for this transom (you said 1ft 4in (so it is 16 inches).
Look at these links and you will see what I am talking about:
http://www.onlineoutboards.com/article_outboard_shaft_length.html
http://www.brokeboats.com/shaftlength.html
2007-08-31 00:55:23 · answer #5 · answered by FugYouYahPoo 2 · 0⤊ 0⤋
/The type of boat the engine is going on determines if it is long shaft of short shaft. The depth of the stern to the water will tell you what you can use.
2007-08-28 15:04:06 · answer #6 · answered by FILE 4 · 0⤊ 0⤋
i don't know for sure but i think short shaft would be better to me because u won't lose the much power with all that travel to move the propeller
2007-08-29 14:54:48 · answer #7 · answered by Paul P 2 · 0⤊ 0⤋
seattles has it ultimate!! a jack plate is the sole and maximum secure thank you to flow, an adjustable plate is ultimate, that way you additionally could ensure that the cavitation plate on the motor is on the comparable top of the backside of the boat
2016-10-09 09:50:46 · answer #8 · answered by ? 4 · 0⤊ 0⤋
It all depends what your boat transom takes there both the same>?
2007-08-28 15:01:18 · answer #9 · answered by 45 auto 7 · 0⤊ 0⤋