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dual motors single prop
http://mudmotortalk.com/mmt_v2/viewtopic.php?f=6&t=68270
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Author:  ffryan [ Fri Sep 16, 2016 6:16 pm ]
Post subject:  dual motors single prop

I'v been contemplating on building a mud motor for my small boat a long tail is my choice on the type. As far as hp more is better right? but is two better then 1?
I'm looking at 2 HF 6.5 hp engine join together by a chain on a go cart type clutch on each motor and one sprocket in the center with a pillow block attaching the shaft.

Pros.
More hp for less money
useable clutches
changeable gearing for more speed out of the motors

cons
Slightly more weight
more parts to brake

I would like to achieve the speed of a short tail but the abilities of a long tail.

Here is my questions to you all Have you ever seen anyone attempt this?

Attached my concept for the idea

Author:  FL_waterfowler [ Sat Sep 17, 2016 5:18 pm ]
Post subject:  Re: dual motors single prop

Interesting concept, I've personally never seen anything like it. Best of luck with this build I'll be watching to see how it comes out!


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Author:  sandybottoms [ Tue Sep 20, 2016 7:08 am ]
Post subject:  Re: dual motors single prop

Seems like it would be tough to keep both motors perfectly in sync. Good luck

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Author:  reharbert [ Tue Sep 20, 2016 7:27 am ]
Post subject:  Re: dual motors single prop

I don't want to sound negative or rain on your parade...but I think the only reason to do this would be for the satisfaction of doing it and having something unique. I don't believe it would ever be as reliable as simply using a 14-18hp single engine and drive.

The more moving parts, the more problems. If you take it on though, it would definitely be a conversation piece!

Author:  redlined_b16a [ Tue Sep 20, 2016 8:33 am ]
Post subject:  Re: dual motors single prop

Be a neat project,I have been dreaming up a 90 horsepower Honda D15 engine set up.

Author:  BERNIE255 [ Tue Sep 20, 2016 10:30 am ]
Post subject:  Re: dual motors single prop

Theres a longtail with one motor in front of the other, seen it a few years ago


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Author:  mogenduck [ Tue Sep 20, 2016 2:14 pm ]
Post subject:  Re: dual motors single prop

just a thought but if you have ever seen a tractor pull contest they stack multipul engines on a tractor I donno how they get all too work on one axel but it might help you

Author:  Will [ Wed Sep 21, 2016 6:05 am ]
Post subject:  Re: dual motors single prop

You have a good idea for a clutch on each motor, that will eliminate any rpm differences. I would suggest belts over chain though.

Author:  joel1847 [ Sat Oct 08, 2016 12:16 pm ]
Post subject:  Re: dual motors single prop

Almost all Navy ships use two engines per shaft coupled through a reduction gear and in design aren't that much different than a long tail, just with inboard engines. With clutches, I see no reason why it wouldn't work and it should weigh less than using two longtail engine setups. Weight of a 20hp LT vs. a twin engined single shaft LT? Shouldn't be too much off. What I've noticed here lately is that there are a whole lot more performance parts for smaller engines than there are for larger HP engines.

Joel
norcal

Author:  50fps [ Sat Oct 22, 2016 9:03 am ]
Post subject:  Re: dual motors single prop

Mudbuddy built the Dominator years ago..

download/file.php?id=34955&mode=view

Author:  Will C [ Sat Oct 22, 2016 5:20 pm ]
Post subject:  Re: dual motors single prop

Dam that's a good one

Author:  dead animal [ Sat Oct 22, 2016 5:22 pm ]
Post subject:  Re: dual motors single prop

yea, mb had one several years ago. i'm sure they copied it from somebody else. lol

there are vids of it on youtube.

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