Think I may have posted in the wrong subforum originally
Has anyone put a vtwin on their homemade mud motor. I ordered the mad mut motor plan (this is where you have to take a drink) to see what I can craft up. If anyone has made a thread on it I'll look harder but I've been searching all day on my poop breaks to try and find a thread where someone has made one with a vtwin. Just for reference I'll be using the predator 670 vtwin. I know I have to use a thrust bearing, possibly some others. But my curiosity is what they did with the structural strengthening for a vtwin and what u joint and what bearings were used
And if they used a 1" shaft instead of 3/4"

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It has been done by many on this site but alot of them were before the server change so a lot of photos are no longer there... Weve build a couple with some GX670's... Its pretty simple, weld your frame, find two yokes that fit the 3/4" shaft and whatever your pto on the engine side is, slap a u-joint between the yokes... Id suggest running a caged bearing in the top of the frame; other than that the lower end should be sealed with either bronze bushing or stack of bearings... There is a wealth of info on the site... If you get stuck shoot me a PM, Id be glad to help...

Thank you!

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Is there a place where you can buy a u joint with yokes that one is 3/4 inch and one is 1 inch. McMaster Carr has them but they are all the same size on both sides

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So I've come to the conclusion mcmaster Carr is a junk website. After talking with them you can't buy yokes for needle bearing u joints. I found http://www.dennysdriveshaft.com to be far superior and you can Litterally buy everything but steel that you need for a custom mud motor from them. And it's all cheaper to. Roughly half the price of mcmaster carr. There aren't bronze bushing at Dennys though

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I'm going to save the links so if anybody else needs links to the necessary parts for a vtwin build you can have them fast

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I just bought a predator 670 and put it on my old homemade LT frame. Bolted up great. But I was wondering if yall know where to get any performance parts for these motors????


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That I don't know. What I do know is if you can find a place that sells honda small engine parts/small engine performance parts, they are interchangeable. The gx630 and gx670 parts work for this motor. It's a honda clone

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Check this out http://www.boghogmudmotors.com/store/