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home built surface drive on a tracker 1436
http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=2&t=34991
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Author:  Broke Okie [ Tue Dec 04, 2012 12:37 pm ]
Post subject:  home built surface drive on a tracker 1436

It isn't as smooth looking as a lot of builds I've seen but it is functional. Started with a 212cc predator engine, hill marine 9x8 SD prop, 1.63 to 1 reduction. I added a Honda gx200 bored out Carb, a billet aluminum flywheel, 18 pound valve springs, 1.3 rocker arms, 8 degree timing key and a 7/8" exhaust header. Should be putting out right at 10 HP. I adjusted the governor for more top end (which unfortunately raised my idle until I have a chance to work that problem out) so I'm turning quite alot more rpm than factory, right at 5200 out of the water. In open water I'm running 16 MPH in open water and 18 in water from about a foot and a half to 2 or 3 inches. Now if I can just get pics to upload.

Author:  Broke Okie [ Tue Dec 04, 2012 1:21 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

This was the first test run

Author:  Walkers Bay Synd [ Tue Dec 04, 2012 2:24 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Nothing wrong with that build. Like the use of the outboard mounting makes it simple.

Author:  dguidry [ Tue Dec 04, 2012 2:32 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Great job!! All you need now is to build a wooden boat so you can say you built the whole rig. :lol:

Author:  odass [ Tue Dec 04, 2012 2:49 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Looks good!screw that wooden boat idea

Author:  Broke Okie [ Tue Dec 04, 2012 3:12 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Thanks guys. I think it is working out good. Bigger boat will have more horses and a cleaner look.

Author:  DirtNasty [ Wed Dec 05, 2012 2:03 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

post some pics of the drive assembly. I'd like to know what shaft, bearing and seal parts you used as well. I have built a long tail but not a SD Yet

Author:  Broke Okie [ Wed Dec 05, 2012 2:19 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Ok, have to try that tomorrow

Sent from my Motorola Electrify using Tapatalk 2

Author:  Walkers Bay Synd [ Wed Dec 05, 2012 10:02 pm ]
Post subject:  Re: home built surface drive on a tracker 1436


Author:  Broke Okie [ Thu Dec 06, 2012 1:20 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Was going to try to get some pictures of the drive system up today but I am working away from home and don't have any pics of it on my phone. I will try to get it tore down and upload some when I get back home, probably be next week tho.

Author:  sccoast [ Tue Dec 25, 2012 7:43 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

How long is the tail shaft? Nice build!

Author:  Broke Okie [ Tue Dec 25, 2012 8:47 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

30 inches from the back of the box, probably could be 27 but works fine.

Author:  mschumacher [ Wed Jan 02, 2013 6:41 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

im gunna bump this back up, Im wondering on your bearing assembly too. I plan on building a surface drive over the summer and was wondering about what oyu have done for the assembly

Author:  Broke Okie [ Wed Jan 02, 2013 7:10 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Sorry it has taken me a while, between the holidays and duck hunting ive been hard pressed to tear it down. Lost my other pics of it. I will get the news ones posted this evening.

Author:  Broke Okie [ Wed Jan 02, 2013 7:50 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

The shaft housing has a bearing both fore and aft with a two bolt flange bearing with locking collar on the box itself.

Author:  mschumacher [ Wed Jan 02, 2013 8:53 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Thanks! that helps a lot, I cant wait to get started on my build, but Im going to have ot wait until the next semester is over to get started on it.

Author:  Broke Okie [ Wed Jan 02, 2013 9:22 pm ]
Post subject:  Re: home built surface drive on a tracker 1436

Fyi, using the two b section belts are at least 50 percent cheaper for the setup than the cogged belt and I haven't slipped them yet except when I occasionally get too much water in the box. Does need a separate seal behind the back bearing.

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