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 Longtail build- First MM got a few ?'s 
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MMT Member

Joined: Wed Aug 21, 2013 8:35 am
Posts: 7
Post Longtail build- First MM got a few ?'s
Hey there I'm taking my first dive into the mm world and have a few questions. I recently bought a mud buddy frame with all the controls and everything except a motor. Guy said there was a 24hp Honda on it that he moved to a SD frame. Planning on putting it on a 1648 hull. The motor I have in mind is a Kohler CH 940 a 34hp 1-1/8" shaft motor.

So here's my questions:

1) Does anyone for see any problems using that particular motor?

2) What size prop should I be using?

Thanks for any help. It's much appreciated.


Wed Aug 21, 2013 8:51 am
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MMT Member

Joined: Thu Mar 10, 2011 9:38 am
Posts: 33
Location: Land of 10,000..............TAXES!
Post Re: Longtail build- First MM got a few ?'s
1. Depending on the diameter of the shaft on the Honda, you may need to change the engine side u joint yoke. Also, go online to the various engine retailers and see what the height to the center of the engine shaft is for both motors. If different, it may increase the amount of work for the conversion.

2. Call Jake at Backwater for prop size recommendation. Also, you can look on-line at some of the other manufacturers. Some of them list prop size for various motors.

Hope this helps and good luck!

Mudde

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15x42 Duracraft trying hard to stay ahead of a SWOMP 23!
Just a tiny little island of conservatism floating in a sea of liberalism!

"Fathom the hypocrisy of a government that requires every citizen to prove they are insured...., but not everyone must prove they are a citizen."
And now, any of those who refuse, or are unable, to prove they are citizens will receive free insurance paid for by those who are forced to buy insurance because they are citizens". Ben Stein


Wed Aug 21, 2013 9:25 am
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Joined: Wed Aug 21, 2013 8:35 am
Posts: 7
Post Re: Longtail build- First MM got a few ?'s
Thanks I know the shaft size is the same but hadn't thought about the shaft height I will look into that.


Wed Aug 21, 2013 9:29 am
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Joined: Wed Aug 21, 2013 8:35 am
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Post Re: Longtail build- First MM got a few ?'s
On a 35hp
Go devil calls for a 10x6
Backwater inc calls for 9x8
Mud buddy calls for a 10x5
Beavertail calls for a 9x6

Any suggestions. 1648 typical hunting load would be around 1000 lbs( 3 guys @230lbs plus gear)


Wed Aug 21, 2013 9:19 pm
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MMT F.E.

Joined: Sat Feb 19, 2011 11:48 pm
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Location: Eau Claire Wi
Post Re: Longtail build- First MM got a few ?'s
9x8 seems to be good all around prop some guys go down to a 9x7 for the power can also get a 10x5 from backwaterinc

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1648 alumacraft with a 35 backwaterinc


Wed Aug 21, 2013 9:26 pm
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MMT Member

Joined: Thu Mar 10, 2011 9:38 am
Posts: 33
Location: Land of 10,000..............TAXES!
Post Re: Longtail build- First MM got a few ?'s
I would go with what Jake says. My experiences have been quite good with him. He recommended a prop for my homebuilt LT and I think it was spot on. Call him and give him your specs and he will fix you up.

Mudde

_________________
15x42 Duracraft trying hard to stay ahead of a SWOMP 23!
Just a tiny little island of conservatism floating in a sea of liberalism!

"Fathom the hypocrisy of a government that requires every citizen to prove they are insured...., but not everyone must prove they are a citizen."
And now, any of those who refuse, or are unable, to prove they are citizens will receive free insurance paid for by those who are forced to buy insurance because they are citizens". Ben Stein


Thu Aug 22, 2013 8:49 am
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Joined: Wed Aug 21, 2013 8:35 am
Posts: 7
Post Re: Longtail build- First MM got a few ?'s
Mudde can you pm the number of who you're talking about? The number or business name got asterisked out in the post.


Thu Aug 22, 2013 9:01 am
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Joined: Thu Mar 10, 2011 9:38 am
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Location: Land of 10,000..............TAXES!
Post Re: Longtail build- First MM got a few ?'s
PM sent

_________________
15x42 Duracraft trying hard to stay ahead of a SWOMP 23!
Just a tiny little island of conservatism floating in a sea of liberalism!

"Fathom the hypocrisy of a government that requires every citizen to prove they are insured...., but not everyone must prove they are a citizen."
And now, any of those who refuse, or are unable, to prove they are citizens will receive free insurance paid for by those who are forced to buy insurance because they are citizens". Ben Stein


Thu Aug 22, 2013 9:11 am
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MMT Member

Joined: Wed Aug 21, 2013 8:35 am
Posts: 7
Post Re: Longtail build- First MM got a few ?'s
Alright next question is on the cavitation plate. The previous owner said that he had "modified" the frame to work on a tall transom by cutting the brace supporting the cav plate, raising the angle and filling in the space with weld. So I'm using the frame on a regular transom. I've cut away the weld fill. But before I just go welding it back is there a certain angle that the plate should sit in relation to the tail of frame or frame/motor itself?


Sat Sep 14, 2013 1:50 pm
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