The prop that came w/ the boat is a 14x18....I have a guy that will sell me
a 14x16 prop that will fit. I am more for getting out of the hole than
overall top speed, so I am hoping that a lower pitch prop, and foil might
help me dramatically. Thanks for the input, and if anybody else has more to
give, let me have it!
karl/wheresjerry banach
105 browns pasture rd
strafford, nh 03884
--------------------------------------------------
From: <omc-boats-request@...>
Sent: Sunday, June 07, 2009 12:00 PM
To: <omc-boats@...>
Subject: OMC-Boats Digest, Vol 26, Issue 17
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> Today's Topics:
>
> 1. 1969 silverline riviera (wheresjerry@...)
> 2. Re: 1969 silverline riviera hole shot (DOUGLAS JULIEN)
> 3. Re: 1969 silverline riviera hole shot (Lee Shuster)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 6 Jun 2009 14:10:41 -0400
> From: <wheresjerry@...>
> Subject: [OMC-Boats] 1969 silverline riviera
> To: <omc-boats@...>
> Message-ID: <BAY117-DS8902F50ABFE0574090D52AD490@...>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Going to finally get my boat in the water this weekend for it's second
> season in almost 20 years. I have been in the process of rebuilding the
> boat and the usual stuff it has required after spending 18 years in a
> garage. I have an OMC Stringer Buick v6 w/ 155 hp.
>
> Last season, I noted it had trouble getting out of the hole, (heavy
> tri-hull) and had looked into the possibility of getting a SE Sport 300
> Hydrofoil, question is, has anybody had good luck out there with a similar
> vintage boat?
>
> Thanks!!
>
>
> karl/wheresjerry banach
> 105 browns pasture rd
> strafford, nh 03884
>
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 2
> Date: Sat, 6 Jun 2009 14:08:55 -0700 (PDT)
> From: DOUGLAS JULIEN <dfjulien@...>
> Subject: Re: [OMC-Boats] 1969 silverline riviera hole shot
> To: "Evinrude & Johnson Boats of the 1960's and 70's"
> <omc-boats@...>
> Message-ID: <553945.65790.qm@...>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi Jerry:?
>
> The Silverline is longer but lighter than a Sportsman 155, so hole shot
> should be fine.? The hydrofoil is mostly useful for reducing porpoising -
> sometimes a problem with tri-hulls.? If I were you I'd make sure the
> engine is performing properly, first, then I'd try a lower-pitch prop.?
> With props you must choose what is more important - acceleration out of
> the hole, or top speed/fuel economy.? With a lower-pitch prop your
> acceleration will increase, but your putt-putt speed will decrease, so you
> won't be ramming so many docks.
>
> -Doug Julien
>
>
>
> --- On Sat, 6/6/09, wheresjerry@... <wheresjerry@...> wrote:
>
> From: wheresjerry@... <wheresjerry@...>
> Subject: [OMC-Boats] 1969 silverline riviera
> To: omc-boats@...
> Date: Saturday, June 6, 2009, 1:10 PM
>
>
>
>
> Going to finally get my boat in the water this weekend
> for it's second season in almost 20 years.? I have been in the process of
> rebuilding the boat and the usual stuff it has required after spending 18
> years
> in a garage.? I have an OMC Stringer Buick v6 w/ 155 hp.
> ?
> Last season, I noted it had trouble getting out of the
> hole, (heavy tri-hull) and had looked into the possibility of getting
> a?? SE Sport 300 Hydrofoil, question is, has anybody had good luck out
> there with a similar vintage boat?
> ?
> Thanks!!
> ?
> ?
> karl/wheresjerry banach
> 105 browns pasture
> rd
> strafford, nh? 03884
> ?
> ?
> -----Inline Attachment Follows-----
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> ------------------------------
>
> Message: 3
> Date: Sun, 7 Jun 2009 08:35:28 -0600
> From: Lee Shuster <lks@...>
> Subject: Re: [OMC-Boats] 1969 silverline riviera hole shot
> To: "Evinrude & Johnson Boats of the 1960's and 70's"
> <omc-boats@...>
> Message-ID: <D11996CF-E694-4100-91C4-E1C065F30B18@...>
> Content-Type: text/plain; charset="us-ascii"; Format="flowed";
> DelSp="yes"
>
> Carl,
>
> Doug's comments are right-on the money.
>
> You didn't mention your boat's gross weight or length, but assuming
> it's typical, you can check your boat's theoretical performance using
> this calculator:
> http://hhscott.com/evinrude/docs/BSLAC.htm
>
> What this calculator will basically reveal our the laws of physics,
> which you are up against.
>
> I have done a ton of waterski pulling in a variety of situations with
> my tri-hull Evinrude sportsman. I have a disadvantage that you don't
> have and that is I do it at 7500 Ft Above Sea level so I give 25%
> right away.
>
> Three things you can do to improve getting out of the hole:
>
> 1) Prop properly: Use a 13-inch OMC SST. The stainless steel has less
> flex and will bite better. Next best is a 14 inch Alum. The 12-inch
> prop is too much of a compromise. You will give up fuel economy and
> top speed. (You could also change upper case gear ratios but that
> would be very expensive and not practical).
> 2) Install trim tabs. They when placed in the down position, they will
> raise the stern (Lower the bow) and help the boat get on plan better.
> Conversely you can move all you passengers to the bow (not very
> practical or safe).
> 3) A foil (which extends the area and lift of the anti-ventilation or
> cavitation plate) will help somewhat, but in my experience it has the
> least effect and that's why I've placed it third in this list. It does
> help in turns to keep the prop from catching air and "blowing out"
> resulting in over-revving. I've got a String-Ray (and like it) from
> Marine Dynamics: http://www.marine-dynamics.com/ But don't expect it
> to perform miracles. It is probably the most cost-effective
> improvement you can make.
>
> Lee Shuster
>
>
> On Jun 6, 2009, at 3:08 PM, DOUGLAS JULIEN wrote:
>
>> Hi Jerry:
>>
>> The Silverline is longer but lighter than a Sportsman 155, so hole
>> shot should be fine. The hydrofoil is mostly useful for reducing
>> porpoising - sometimes a problem with tri-hulls. If I were you I'd
>> make sure the engine is performing properly, first, then I'd try a
>> lower-pitch prop. With props you must choose what is more important
>> - acceleration out of the hole, or top speed/fuel economy. With a
>> lower-pitch prop your acceleration will increase, but your putt-putt
>> speed will decrease, so you won't be ramming so many docks.
>>
>> -Doug Julien
>>
>>
>>
>> --- On Sat, 6/6/09, wheresjerry@... <wheresjerry@...> wrote:
>>
>> From: wheresjerry@... <wheresjerry@...>
>> Subject: [OMC-Boats] 1969 silverline riviera
>> To: omc-boats@...
>> Date: Saturday, June 6, 2009, 1:10 PM
>>
>> Going to finally get my boat in the water this weekend for it's
>> second season in almost 20 years. I have been in the process of
>> rebuilding the boat and the usual stuff it has required after
>> spending 18 years in a garage. I have an OMC Stringer Buick v6 w/
>> 155 hp.
>>
>> Last season, I noted it had trouble getting out of the hole, (heavy
>> tri-hull) and had looked into the possibility of getting a SE
>> Sport 300 Hydrofoil, question is, has anybody had good luck out
>> there with a similar vintage boat?
>>
>> Thanks!!
>>
>>
>> karl/wheresjerry banach
>> 105 browns pasture rd
>> strafford, nh 03884
>>
>>
>>
>> -----Inline Attachment Follows-----
>>
>> _______________________________________________
>> OMC-Boats mailing list
>> OMC-Boats@...
>> http://lists.ultimate.com/mailman/listinfo/omc-boats
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>> OMC-Boats mailing list
>> OMC-Boats@...
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Received on Sunday, 7 June 2009
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