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| 18hp duromax rat tail build http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=6&t=74616 |
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| Author: | Builtnotbought [ Fri Oct 11, 2019 10:50 pm ] |
| Post subject: | 18hp duromax rat tail build |
Hey all, New to the forum and started a new project, so I've been soaking up some info. My 6.5hp Thailand longtail has worked well pushing my 14x36, but its time for an upgrade. I recently got this farm engineered rat tail for $200, it was set up as a chain/sprocket with a 5/8" keyed prop. I'm cutting it down and threading it to fit a 3/4" threaded BPS 9x5 tiger prop and swapping out to a u-joint assembly. Also replaced the some bearings and seals. Finally its being married up to a 18hp Duromax. I'm open to any and all feedback or pointers as this is my first build. Thanks for the add! |
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| Author: | Builtnotbought [ Wed Oct 16, 2019 6:03 am ] |
| Post subject: | Re: 18hp duromax rat tail build |
Little bit of an update. Whats with the lag time in posting on this forum? |
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| Author: | Wchauvin [ Wed Oct 16, 2019 12:41 pm ] |
| Post subject: | Re: 18hp duromax rat tail build |
Looks like a cool little set up bro. If it gets you to the ducks, then it’s a success for sure bro! |
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| Author: | Builtnotbought [ Sun Oct 27, 2019 4:29 pm ] |
| Post subject: | Re: 18hp duromax rat tail build |
Finally made a little progress. I cut the tappered 5/8 portion off the end of the shaft, then threaded it to 3/4 #10 to fit the BPS tiger 9x5. Still not sure how well the 18hp will turn that size prop on my 1436 flat bottom, but thats what the BPS website recommends. |
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| Author: | bear river boomer [ Sun Dec 29, 2019 9:19 am ] |
| Post subject: | Re: 18hp duromax rat tail build |
OP, where did you find those bearing housings/couplers? |
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| Author: | mudpack [ Sun Apr 05, 2020 8:07 pm ] |
| Post subject: | Re: 18hp duromax rat tail build |
Why is it so many of these interesting threads die such a quick death? ....usually just after three or four posts?? |
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| Author: | FRANKtheTAU [ Wed Apr 08, 2020 1:34 pm ] |
| Post subject: | Re: 18hp duromax rat tail build |
Because that thing probably ran like a turd and he scrapped it. |
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| Author: | DyingBreed [ Sat Feb 06, 2021 7:50 am ] |
| Post subject: | Re: 18hp duromax rat tail build |
Pound For pound. Single cylinder clone engine duromax 18hp is king . Biggest big bore. and all gx390 hop ups fit. Im running 25 mph on a 1436 w/ modded 18hp mated to a cheap twister |
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| Author: | Wchauvin [ Sat Feb 06, 2021 9:08 am ] |
| Post subject: | Re: 18hp duromax rat tail build |
That’s fast as fuck for that little rig. Good stuff bro |
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