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Ptuck66
MMT Pro Member
Joined: Mon Feb 02, 2015 2:28 pm Posts: 84
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 Surface Drive Shaft Length
Got a question for you guys running smaller size sd's. I am building my first surface drive and need to know the measurment from the back of the belt housing to the center of the prop.
I know there is probably alot of difference based on brand but the more info i can get the better.
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Fri Nov 20, 2015 8:14 am |
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DENNYEDWARDS
MMT Addict
Joined: Sun Aug 09, 2009 12:50 pm Posts: 574 Location: Muscatine, Iowa
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 Re: Surface Drive Shaft Length
My son really likes his 40" shaft on his MB 7000, further prop is back of boat it will get better bite in less aerated water. Older MBs had 48" shafts on their Hyperdrives, I had a 2005, wished MB still offered a 48".
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Fri Nov 20, 2015 7:06 pm |
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Ptuck66
MMT Pro Member
Joined: Mon Feb 02, 2015 2:28 pm Posts: 84
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 Re: Surface Drive Shaft Length
Wow 40" is a lot longer than I expected. Do you have any idea what it would be on a mb mini? Or a copperhead? Copperhead would be similar to what I'm building.
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Fri Nov 20, 2015 7:32 pm |
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DENNYEDWARDS
MMT Addict
Joined: Sun Aug 09, 2009 12:50 pm Posts: 574 Location: Muscatine, Iowa
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 Re: Surface Drive Shaft Length
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Fri Nov 20, 2015 7:47 pm |
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Ptuck66
MMT Pro Member
Joined: Mon Feb 02, 2015 2:28 pm Posts: 84
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 Re: Surface Drive Shaft Length
Its a 16 hp duromax I bought on ebay. I built a longtail using it then just recently sold the frame so I could build a sd. I figure I will use this motor for now and eventually buy a 22/23hp honda or vangaurd.
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Sat Nov 21, 2015 6:58 am |
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SETx Longtail
MMT 1000 Club
Joined: Sun Sep 01, 2013 2:53 pm Posts: 3480 Location: Hardin County, Tx
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 Re: Surface Drive Shaft Length
The GoDevils come with a 36" drive, works well in many types of conditions.
_________________ #CFFITR
-Custom pool noodle -stage 4 water wings
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Fri Nov 27, 2015 9:48 am |
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Ptuck66
MMT Pro Member
Joined: Mon Feb 02, 2015 2:28 pm Posts: 84
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 Re: Surface Drive Shaft Length
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Sat Nov 28, 2015 7:04 am |
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SETx Longtail
MMT 1000 Club
Joined: Sun Sep 01, 2013 2:53 pm Posts: 3480 Location: Hardin County, Tx
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 Re: Surface Drive Shaft Length
I'm not sure exactly how that's measured since the belt housing doesn't just stop where the belt and pullies are, there's a CV joint at the bottom also. This allows the engine and belt to run on a flat plane and the angle of the drive occur at the bottom.
_________________ #CFFITR
-Custom pool noodle -stage 4 water wings
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Sat Nov 28, 2015 11:16 am |
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cumminsman03
MMT Pro Member
Joined: Sun Dec 21, 2014 4:07 pm Posts: 96 Location: Batson, Texas
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 Re: Surface Drive Shaft Length
I researched it a while back and was told outdrives were measured from center of the pulley to center of prop. I built a 30" for my build and looked pretty proportionate
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Thu Dec 03, 2015 6:11 pm |
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Ptuck66
MMT Pro Member
Joined: Mon Feb 02, 2015 2:28 pm Posts: 84
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 Re: Surface Drive Shaft Length
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Fri Dec 04, 2015 6:01 am |
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cumminsman03
MMT Pro Member
Joined: Sun Dec 21, 2014 4:07 pm Posts: 96 Location: Batson, Texas
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 Re: Surface Drive Shaft Length
Kinda. I ended up not finishing it because other projects starting piling up around the house. And I started trying to do some side jobs. Here's the link. viewtopic.php?t=59919Plus I sold my long tail rig and missed a couple hunts because my buddy's merc didn't crank at the ramp so my wife said we need another boat.
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Fri Dec 04, 2015 6:36 am |
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cumminsman03
MMT Pro Member
Joined: Sun Dec 21, 2014 4:07 pm Posts: 96 Location: Batson, Texas
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 Re: Surface Drive Shaft Length
Kinda. I ended up not finishing it because other projects starting piling up around the house. And I started trying to do some side jobs. Here's the link. viewtopic.php?t=59919Plus I sold my long tail rig and missed a couple hunts because my buddy's merc didn't crank at the ramp so my wife said we need another boat.
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Fri Dec 04, 2015 6:36 am |
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