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Go Back   SailNet Community > On Board > Gear & Maintenance > Backing
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Thread: Backing Reply to Thread
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Topic Review (Newest First)
02-28-2009 04:22 PM
pvanv1 You can use their website contact form, or PM me for the direct tel and email.
02-28-2009 03:49 PM
dbruce85 I nave been finding the same situation with the outboard on my boat. Do you have an email address to contact Marc.
Thanks
David
02-28-2009 03:02 PM
sck5 I guess I was thinking dinghy. on a bigger boat no reverse would get to be a pain
02-28-2009 02:55 PM
pvanv1
Quote:
Originally Posted by sck5 View Post
I thrust in reverse with a good shove with the paddle on the dock. Then I fire it up and go.
Good way to go, if you have a vessel where that works. On heavier boats, where it's a toss up between lazarette-located OB and inboard power, if you have the one with OB (as I and a few of my friends do), the paddle system isn't all that effective. Also doesn't address setting an anchor in reverse. I suppose it's also OK to set the anchor from astern, and then transfer the rode to a bow chock in that case...
02-28-2009 01:13 PM
sck5 I thrust in reverse with a good shove with the paddle on the dock. Then I fire it up and go.
02-28-2009 10:37 AM
pvanv1
Backing

I have noticed that most small outboards don't back up well. Especially the through-hub-exhaust models (typically over 3.5 hp). What happens is that the exhaust washes over the prop blades in reverse, and the prop can't bite much water.

That has been addressed with modern High Thrust props on selected new outboards, but I was having trouble getting one to fit an old Merc 7.5. Couldn't find a listing on any prop selection charts to get the HT prop. It looked like the only option was going to be for me to bore out the leg of the outboard to relieve the exhaust just above the ventilation plate.

Every way I tried to get a solution, I was stopped "dead in the water". Then, I contacted Solas, and got the answer.

I traded emails and a phone call with Marc Feinman, the US marketing rep for Solas Science and Engineering. He came up with the correct Solas part number (1113-100-07) which is a 4-blade, high-thrust, 7-pitch prop to fit the old 8-spline prop shaft on the Merc 7.5 OB. No special hub sleeve needed. Retail is about $92.00 US. Our store can source it through Coast Distributors.

Marc is a great guy, very knowledgeable and quite helpful. I can't say enough about how he handled my customer service request. He's in their Tampa, Florida office. Bottom line is that he knows the applications very well. The prop selector charts didn't help me much. Most OB and prop manufacturers concentrate on the faster, bigger and newer motors, and go-fast boats. They tend to ignore sail applications. The correct part is in fact available for most small OB's -- IF you get Marc to help find it.

I know from experience that these props are excellent for sailboats -- I have one on a Nissan 9.8 on my boat. I was actually able to downsize from 15 hp to 9.8 hp, and still get better thrust, especially in reverse. Anyone who wants to improve the low-speed thrust on their outboard-aux sailboat may want to investigate these high-thrust Solas props.

 
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