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Forums28
Topics3,984
Posts19,069
Members1,019
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Most Online238 Feb 9th, 2024
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Re: Official prop thread
[Re: dlabrosse]
#12897
01/18/12 12:31 AM
01/18/12 12:31 AM
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Joined: Oct 2009
Posts: 88 Belmont, MA
Georges
Senior Member
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Senior Member
Joined: Oct 2009
Posts: 88
Belmont, MA
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Dominique, By backward reliability, do you mean satisfactorily as well? I try to gauge if your new martec, in addition to reliability, makes the backward thrust significantly more efficient - even with our small 15hp YM?
It is still always stressfull for me to pull out of a slip with strong wind from the hip. I would love to have more thrust and less torque:-)
Last edited by Georges; 01/18/12 09:20 AM.
-- Georges Foot Loose #467 - CPYC - Winthrop
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The J/30 Class Association has partnered with West Marine and is now a member of the West Marine affiliate program. You can support the J/30 Class when you make your West Marine purchases online. The J/30 Class Association receives a percentage of sales from your purchases when you click through from our website. Click the logo above and you will be directed to the West Marine website with a cookie that identifies you as a J/30 affiliate. You can also use any discounts that you may be authorized.
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Re: Official prop thread
[Re: NaturalHigh]
#12911
01/20/12 04:40 AM
01/20/12 04:40 AM
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Joined: Oct 2007
Posts: 160 Vancouver, BC, Canada
dlabrosse
Senior Member
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Senior Member
Joined: Oct 2007
Posts: 160
Vancouver, BC, Canada
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Georges,
I mean that I can actually get backwards. There was so much slop in my prop that I needed to get to at least mid range RPMs to get any thrust in reverse. Often the prop would not properly unfold either. I sent it to Martec for a rebuild but the metal was sufficiently pink that they could not guarantee the integrity of the prop if it was re-built. So I bought a new one. Immediately I noticed reduced vibration and real thrust at idle in reverse. Way easier to get out of my slip. Which I do entirely in reverse. Yes I am satisfied with the performance of the prop. Have not gotten into nearly as much trouble getting in and out of the slip since it was replaced.
Dominique Labrosse Red Five, #92
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Re: Official prop thread
[Re: NaturalHigh]
#12966
01/28/12 12:24 PM
01/28/12 12:24 PM
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Joined: Oct 2010
Posts: 203 Oxford, MI
Conundrum
Senior Member
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Senior Member
Joined: Oct 2010
Posts: 203
Oxford, MI
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I have been away but excited to weigh in on the Martec. I bought a brand new Martec 14x14x1 for Conundrum for 2011. I found the backing power and the braking to be lacking and wondered why. My Catalina 30 had the same prop and it was 15 years old and still had good backing ability as well as good braking power. Tha Cat has 4000# more to stop. I wonder why the J config is as it is. Is true for the rest of you, Poor backing and braking? I do go forward at 6.6 kt @ 2600rpm and Yanmar 13 2GM
Don King
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Re: What's wrong with this picture?
[Re: NaturalHigh]
#13084
02/22/12 10:18 PM
02/22/12 10:18 PM
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Joined: May 2007
Posts: 2,669 Portsmouth, RI
Rhapsody #348
Past J/30 Class President
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Past J/30 Class President
Joined: May 2007
Posts: 2,669
Portsmouth, RI
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Absolutely send it back for refurb. As long as the hole for the pivot pin hasn't been over-bored too much with an over-sized pin used already. Martec will weld up and refinsh the surface per my previous post in this thread.
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