Deprecated: Function set_magic_quotes_runtime() is deprecated in /var/www/vhosts/tartan37.com/httpdocs/t37forum/common.php on line 88 Tartan37.com • View topic - Where to buy new raw water pump?

Tartan37.com

Tartan 37 Owner's Forum - Ride the wind, but look good doing it!
The time is 28 Mar 2024 04:53

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 23 Posts ]  Go to page Previous  1, 2, 3
Author Message
 Post subject: Re: Where to buy new raw water pump?
PostPosted: 03 Mar 2013 13:24 
Offline
Skipper

Joined: 10 Dec 2006 15:14
Posts: 213
Location: London, Ontario
I presume that the 2800-3000 rpms are taken from the lower pulley on the engine as that seems to be the crankshaft. If that is turning at 2800 and ,according to Sherwood the pump (r30g) should turn at 4000 for optimum output the pulley on the pump should be 2/3 the size of the one on the crankshaft.

Am I right on this equation?

I ask this as I have been told my pump pulley looks large but it is 3/4 the size of my crankshaft pulley and that would make it almost right on, Would it not?


 
 Profile Email  
 
 Post subject: Re: Where to buy new raw water pump?
PostPosted: 03 Mar 2013 13:25 
Offline
Skipper

Joined: 10 Dec 2006 15:14
Posts: 213
Location: London, Ontario
I presume that the 2800-3000 rpms are taken from the lower pulley on the engine as that seems to be the crankshaft. If that is turning at 2800 and ,according to Sherwood the pump (r30g) should turn at 4000 for optimum output the pulley on the pump should be 2/3 the size of the one on the crankshaft.

Am I right on this equation?

I ask this as I have been told my pump pulley looks large but it is 3/4 the size of my crankshaft pulley and that would make it almost right on, Would it not?


 
 Profile Email  
 
 Post subject: Re: Where to buy new raw water pump?
PostPosted: 03 Mar 2013 17:05 
Offline
Skipper

Joined: 21 Oct 2006 15:36
Posts: 268
By my math, the diameter ratio of pump pulley to crank shaft pulley should be 3000/4000 or 3/4.

_________________
Jim Voelxen
Odyssey #191
Home Port: Osterville, MA


 
 Profile Email  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 23 Posts ]  Go to page Previous  1, 2, 3

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: Googlebot and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Powered by phpBB © 2002, 2006 phpBB Group