[C38] auto prop or max prop
eyriepg at comcast.net
eyriepg at comcast.net
Sat Nov 3 14:12:59 EDT 2007
I replaced a Martec folding prop with a 3 blade MaxProp about 5 years ago. I have the Yanmar 3GM30 engine. The main reason I chose the MaxProp was that I had friend who got me a good discount on it. The Martec that I removed had too much pitch since the PO got it off of a J35. The correct pitch on the MaxProp allowed me to reach the redline and in a pinch go faster but I also cruise slower at the same RPM due to the change in pitching.
The MaxProp does back up extremely well and stops the boat quickly. It didn't eliminate the prop walk like I had hoped, though. On the down side, you have to saw off the end of the prop shaft to mount the MaxProp, which eliminates change back to another type of prop. You also have to haul the boat and lubricate the prop annually. That is a good time to replace the cone zinc which is easy to find at most marine stores. It is a good idea to take care when engaging the transmission.
I can't comment on relative efficiency of the 2 props since the condition of surface(grass, barnacles, etc) of the blades has far more influence on the speed.
Phil Gay
C38 049 Que Linda
Everett, WA
-------------- Original message --------------
From: "Alden Andre" <alden642 at comcast.net>
> I am looking to install either a Max Prop or a Auto Prop. Has any body
> installed either? If so what are your comments or suggestions? Did the
> performance live up to the manufactures claims?
>
>
>
> Alden Andre
> Vice Commodore
> Columbia River All Catalinal Association
> C-38 s/n 106 FLYBYE
> 503-929-8814
>
> -----Original Message-----
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> Subject: Listserve Digest, Vol 3, Issue 146
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> Today's Topics:
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> 1. Battery Question (Larry Malmberg)
> 2. Re: Battery Question (Les)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 31 Oct 2007 10:48:07 -0800
> From: "Larry Malmberg"
> Subject: [C38] Battery Question
> To: "'Catalina 38 Listserve'"
> Message-ID: <001401c81bee$95822580$7101a8c0 at lmi.local>
> Content-Type: text/plain; charset="us-ascii"
>
> Am looking to replace our 4 house batteries, they are 100 amp each, any
> recommendations? Will also most likely replace the start battery too. We
> currently have Chairman batteries which have served us fine, the cost of
> lead has gone through the roof, thank you US Military LOL, so am looking for
> alternative type batteries, I have heard of a fiber type battery but can't
> seem to find much on them. Any suggestions would be appreciated.
>
>
>
>
>
> Best regards,
>
> Larry Malmberg-President
>
> Larry Malmberg Investigations and Security, Inc.
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> ------------------------------
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> Message: 2
> Date: Wed, 31 Oct 2007 16:43:14 -0700
> From: Les
> Subject: Re: [C38] Battery Question
> To: larrypi at linkline.com, Catalina 38 Listserve
>
> Message-ID: <1193874194.6751.3.camel at localhost.localdomain>
> Content-Type: text/plain
>
> On Wed, 2007-10-31 at 10:48 -0800, Larry Malmberg wrote:
> > Am looking to replace our 4 house batteries, they are 100 amp each,
> > any recommendations? Will also most likely replace the start battery
> > too. We currently have Chairman batteries which have served us fine,
> > the cost of lead has gone through the roof, thank you US Military LOL,
> > so am looking for alternative type batteries, I have heard of a fiber
> > type battery but can't seem to find much on them. Any suggestions
> > would be appreciated.
> >
> >
> >
> >
> Hi, Larry,
> We have 4 Trojan T-105's on JACE. Easier to install (62lbs each),
> and
> that gives us 450 AH total capacity, >100 useable within the 25% range
> of usage. Currently they list for $138 at most solar outlets, and you
> may find them cheaper. The last set lasted <5 years with horrible
> treatment by me, so I think they are a good and economical solution.
> However they do not fit the stock box under the table settee, I have two
> there and two in a plastic box strapped into the quarter berth.
>
> Regards,
> Les H
>
> Regards,
> Les H
>
>
>
>
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