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Author Topic:   Battery/generator question
montaukman posted 03-05-2005 10:07 PM ET (US)   Profile for montaukman   Send Email to montaukman  

On the new 170 montauk, does aqnyone know if the 90 merc 4 stroke has either s generator or alternator? I am nervous about running my radio and not having enough juice to start the engine. When the motor is running, how does the battery get charged?

Alsom does anyone know if the 90 merc 4 stroke has apull start? Has anyone evr tried to start it that way and if so, was it easy?


Alan C.

Sheila posted 03-06-2005 01:57 AM ET (US)     Profile for Sheila  Send Email to Sheila

It appears your new motor charges the battery with an alternator.

montaukman posted 03-06-2005 08:36 AM ET (US)     Profile for montaukman  Send Email to montaukman     
Thanks Sheila,

Thats good news.

Best regards,

Alan C.

Sheila posted 03-06-2005 02:05 PM ET (US)     Profile for Sheila  Send Email to Sheila     
Alan, you're welcome. There was an (ever so gentle! friendly!) point to my post...I found the information you asked about in about 30 seconds with a Google search.

Your enthusiasm for your new Montauk is wonderful and I'm sure waiting for her delivery is tough. I hope once she arrives that you enjoy her for a long, long, time. :)

montaukman posted 03-06-2005 05:46 PM ET (US)     Profile for montaukman  Send Email to montaukman     
Hi Sheila,

Ever so friendly point taken....... :) Thank you for your help.


Sheila posted 03-07-2005 12:26 AM ET (US)     Profile for Sheila  Send Email to Sheila     
Alan, you're welcome. I have a feeling you're going to be a terrific asset to continuousWave. :)
bigjohn1 posted 03-07-2005 08:14 AM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     
Hey Alan, I love your enthusiasm over the new boat. As a recent buyer of an '05 170 just like you, I asked scores of questions in the months leading up its delivery. To better help you with many of these questions you have, I suggest you use the search button in the upper right-hand side of the screen. The reason I say this many common questions come up over and over again each and every few weeks. I feel that many people (but not all) are reluctant to come back with a detailed response because the topic was recently discussed and run to ground so-to-speak. While I certainly don't speak for anyone but myself, that is just the feeling I get and I think it is accurate based upon the lower number of replies a person will get when they ask a question that was just discussed.

As an example, I recently had a question on vhf radios..I wanted to get an Icom but was unsure on the following issues:

1. Which Icom model to buy
2. What size/style antenna to buy
3. Where was the best location to mount both my VHF and my antenna on the 170.

When I did a search, I typed in the keywords,
"170", "vhf", "antenna", and "6db". Since I wanted to install an 8' antenna, this brought up various historical threads discussing vhf installation in a 170 and I also found a few guys who had installed the longer antennas on their 170. It really helps you a great deal.

To your current question on radio/batery electrical loads, there are two threads both around 30 days old that really went into some depth on this...check them and you'll see.
In short though, I can tell you a 170 with a Merc 90 will have no troubles using the radio..the one missing part of your question though is - do you plan on stopping on a beach or anchoring and jamming out to the radio for hours on end without the engine running? Your answer to this might sway the advice someone gives you. I currently have a single battery and troll all day long with a NAVMAN GPS/Plotter and Icom vhf. Both the sonar and gps stay on all day and I also yack a good bit throughout the day with the vhf on high power (25W). No issues with the battery running low. Enjoy the boat and I hope this helps you out.

Troutman767 posted 03-08-2005 08:44 PM ET (US)     Profile for Troutman767  Send Email to Troutman767     

I just had my 2003 Montauk 170 wired from the 4 stroke to a Guest Isolator and 3 way switch under the console. Also installed a second battery.

The engine is always charging both batteries. Only one battery is ever being discharged, unless I select both. This insures a spare battery is always available. One battery cannot discharge the other. Switching the selector back and forth to ensure charging has been eliminated.

If you have any questions, call Steve at Colley Marine in Virginia Beach, 757-363-8000. Mention my name and he'll explain the details.

I have pictures if you desire.



dcritch posted 03-08-2005 09:45 PM ET (US)     Profile for dcritch  Send Email to dcritch     
I've been trying to come up with the best way to add a second battery to feel safe operating a shrimp pot hoist,possibly an electric downrigger, ect. I would like to see your pictures.
Troutman767 posted 03-08-2005 11:21 PM ET (US)     Profile for Troutman767  Send Email to Troutman767     
I'll take a bunch tomorrow and e-mail them to you.


Troutman767 posted 03-09-2005 10:15 AM ET (US)     Profile for Troutman767  Send Email to Troutman767     
Pictures sent.

If anybody else wants them, let me know.


montaukman posted 03-09-2005 09:54 PM ET (US)     Profile for montaukman  Send Email to montaukman     

Well i decided to go with the dual battery and switch setup. Dealer to install for $327. Since I am running lots of equipment and toys, I need to be safe and have lots of juice available. Works out to 5 bucks a month over the 4 year loan. Def doable.

Thanks for all your help on this one,

Alan C.

Just 8 more days till delivery. That first scrape from a docking mishap is gonna kill me.

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