Reply
 
Thread Tools Search this Thread
 
Old 06 June 2013, 17:17   #1
Member
 
F470's Avatar
 
Country: USA
Town: Portland
Boat name: Tilikum
Make: Zodiac FC-470
Length: 4m +
Engine: Suzuki DT-40
Join Date: Apr 2013
Posts: 244
Determining Shaft length on a Zodiac FC470

I have a Zodiac FC470 and I have measured the transom in order to determine the shaft length needed for the motor I will be purchasing. I have measured top of transom down to the bottom of the transom where it meetings the flooring, on the center. The distance is 18.5" (47cm) which should put me in the long category according to this site. Can other FC/F470 owners confirm if this seems accurate and reasonable? Thanks!
__________________

__________________
F470 is offline   Reply With Quote
Old 06 June 2013, 17:28   #2
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
That site's wrong. 'Short' shaft is a bit variable depending on how big the motor is.

You need an 18" shaft.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 06 June 2013, 17:33   #3
Member
 
F470's Avatar
 
Country: USA
Town: Portland
Boat name: Tilikum
Make: Zodiac FC-470
Length: 4m +
Engine: Suzuki DT-40
Join Date: Apr 2013
Posts: 244
Glad I asked. Is that considered long? Is there a better website to explain this with more accurate information?
__________________
F470 is offline   Reply With Quote
Old 06 June 2013, 17:40   #4
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
Someone correct me if I'm wrong please! This is as far as I know:-

It's usually considered a short shaft on bigger motors.

As far as I know, what you have is...

15"-ultra short/extra short

18"-short shaft

20"ish-longshaft

25"-XL shaft

30"-XXL shaft.

On smaller motors-the sort of thing used on a dinghy or to power a small daysailer/yacht you see short shaft (for dinghies) which is about 15", or longshaft which is 20-21"
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 06 June 2013, 17:55   #5
Member
 
Country: UK - England
Boat name: Seashell
Make: Redbay
Length: 7m +
Engine: Inboard diesel
Join Date: Jan 2004
Posts: 5,263
Long Shaft Outboards and Short Shaft Outboard Motors
__________________
Tim M is offline   Reply With Quote
Old 06 June 2013, 17:59   #6
Member
 
Country: USA
Town: Seattle
Boat name: Water Dog
Make: Polaris
Length: 4m +
Engine: Yamaha 60hp
Join Date: Apr 2007
Posts: 1,152
Quote:
Originally Posted by F470 View Post
I have measured top of transom down to the bottom of the transom where it meetings the flooring, on the center.
Can't tell from what you've written but you should be measuring on the outside of the transom. Top all the way down to the lowest, deepest part of the V.

It should be a "long" or 20" shaft however:
Technical Specifications
__________________
captnjack is offline   Reply With Quote
Old 06 June 2013, 18:46   #7
Member
 
martini's Avatar
 
Country: UK - Channel Islands
Town: jersey
Boat name: Martini II
Make: Arctic 28/FC470
Length: 8m +
Engine: twin 225Opti/50hp 2t
MMSI: 235067688
Join Date: Jun 2005
Posts: 3,021
Quote:
Originally Posted by Nos4r2 View Post
Someone correct me if I'm wrong please! This is as far as I know:-

It's usually considered a short shaft on bigger motors.

As far as I know, what you have is...

15"-ultra short/extra short

18"-short shaft

20"ish-longshaft

25"-XL shaft

30"-XXL shaft.

On smaller motors-the sort of thing used on a dinghy or to power a small daysailer/yacht you see short shaft (for dinghies) which is about 15", or longshaft which is 20-21"
I've always understood it to be 15" short shaft, 20" long shaft, 25" XL, 30" XXL.

OP - Fc470's are long shaft as standard but can be specced for a shaft. Mine is short shaft, next time I'm at my shed ill stick a tape measure on it
__________________
martini is offline   Reply With Quote
Old 06 June 2013, 19:03   #8
RIBnet admin team
 
Nos4r2's Avatar
 
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,645
RIBase
Quote:
Originally Posted by martini View Post
I've always understood it to be 15" short shaft, 20" long shaft, 25" XL, 30" XXL.

OP - Fc470's are long shaft as standard but can be specced for a shaft. Mine is short shaft, next time I'm at my shed ill stick a tape measure on it
I thought that too, but there seems to be the odd 18" shaft cropping up, and I keep seeing 15" shaft big motors (200hp+) described as ultra short.

It might be what the link Tim M posted up says as 18" true length.
__________________
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 06 June 2013, 22:35   #9
Member
 
F470's Avatar
 
Country: USA
Town: Portland
Boat name: Tilikum
Make: Zodiac FC-470
Length: 4m +
Engine: Suzuki DT-40
Join Date: Apr 2013
Posts: 244
Thanks! Please do. What are we measuring here exactly anyway and why? Are wee assuring the transom height or transom to keel? I have speed tubes on mine so that has to be considered I have been told but not sure why?


Quote:
Originally Posted by martini View Post
OP - Fc470's are long shaft as standard but can be specced for a shaft. Mine is short shaft, next time I'm at my shed ill stick a tape measure on it
__________________
F470 is offline   Reply With Quote
Old 11 June 2013, 13:04   #10
Member
 
Country: USA
Town: Seattle
Boat name: Water Dog
Make: Polaris
Length: 4m +
Engine: Yamaha 60hp
Join Date: Apr 2007
Posts: 1,152
Top of transom to bottom of keel on the outside. Right in the middle of the transom. Don't worry about the speed tubes they don't dictate the engine shaft length. It should end up measuring about 19.5" or so.

Where did you find a FC470 in the PNW? Never seen one her in person so if you ever get up to Puget Sound let me know and we can go for a spin.
__________________

__________________
captnjack is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 02:17.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.