Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 18-09-2007, 10:47   #31
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,055
"500HP (and also at 450). I didn't dig very deeply. It's the same one used in the new Mustangs."
Sean, that's not a "500hp continuous duty" rating. It also be rated on the raw shaft, not on the wheels, or vice versa. Going back as far as WW2 (and I don't know if it is still practice, perhaps someone here does) the engines installed aboard USN ships were required to provide continuous duty at the "rating plate" hp rating, and to provide three times that hp for combat operations. The difference being that they were expected to burn out or blow up if kept under combat operations long enough.

Your Mustang engine wouldn't last long running wide out under full load. Unlike an Indy car...it couldn't even last 500 miles "stock".<G>

And despite the occassional reports from forum members that they can fully recharge batteries of various types in just one hour--I haven't heard any battery maker say that can or should be done, if you expect any reasonable life from the battery. They're still all on the 1/4 or 1/5th "C" maximums, AFAIK.
__________________

__________________
hellosailor is offline   Reply With Quote
Old 18-09-2007, 13:28   #32
cruiser

Join Date: Nov 2004
Posts: 4,525
Quote:
Originally Posted by hellosailor View Post
"500HP (and also at 450). I didn't dig very deeply. It's the same one used in the new Mustangs."
Sean, that's not a "500hp continuous duty" rating. It also be rated on the raw shaft, not on the wheels, or vice versa. Going back as far as WW2 (and I don't know if it is still practice, perhaps someone here does) the engines installed aboard USN ships were required to provide continuous duty at the "rating plate" hp rating, and to provide three times that hp for combat operations. The difference being that they were expected to burn out or blow up if kept under combat operations long enough.

Your Mustang engine wouldn't last long running wide out under full load. Unlike an Indy car...it couldn't even last 500 miles "stock".<G>

And despite the occassional reports from forum members that they can fully recharge batteries of various types in just one hour--I haven't heard any battery maker say that can or should be done, if you expect any reasonable life from the battery. They're still all on the 1/4 or 1/5th "C" maximums, AFAIK.
Agreed. I have no clue when it comes to land things like Mustang engine horsepowers. I defer to your expertise there. I imagine you'd be right. The engine is rated at a 500HP *peak* like all other car engines, right?

But... I have to disagree about your idea of not charging batteries up in an hour. I have been doing so for 2 years now aboard the current boat. The batteries work like the day I got them - no sulfation, no drop in storage capacity and I even do it in less than an hour (45 mins). I draw them down daily and charge them up daily. (except when at docks, so I've really been doing this on a daily basis for about 365 days, rather than 2 years - representing the number of nights I've been at anchor in the past 2 years)

See... it really depends on how deeply you are discharging them. I routinely use my twin Iota 90 Amp chargers (that can put out 180 Amps an hour if required) to charge up a 420AH bank of Trojans that are rarely even below 30% discharge.
__________________

__________________
ssullivan is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Engine & Genset Charlie Engines and Propulsion Systems 4 21-03-2007 09:51
Genset Recommendations Sunspot Baby Electrical: Batteries, Generators & Solar 43 03-09-2006 20:27
Genset Info John&Ria Electrical: Batteries, Generators & Solar 5 09-01-2006 12:50
What Genset ?? Munjon General Sailing Forum 0 24-10-2003 07:14



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 02:24.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.