Could someone please help, i buit my own SD Looks great work for 5 min then belt started to slip! could one of yall please tell me what type of pulleys and belt or clutch these motors take. I have a 18h kolar rpms are about 3600, would love some help ive put in alot of time and effort into this build any help would be appraciated also were i could get this stuff would be great!

what kind of belt

i put a 50 inch v belt on a 3.5 top pulley and a 4inch on the bottom i have no clue what type of set up these SD motors use, ive built this motor just buy looking at pics of MD and Gator tail.

Timing belt

Let's see some pix of this home build!

Chain and sprockets...alot cheaper than a timing belt setup and it won't slip!!

v-belts are not the best, slip too much for this application. Like the other guys said chain and sprockets or timing pulleys with 3/4 to 1 inch wide belts. I used martin H pitch timing pulleys for my build, the H is for heavy duty ba beeeeeeh. Think I had about 150 bucks tied up in them+ the tapered bushings to go in them for the right size bore. Don't give up these home builds will whip your butt if you let them.

man thanks alot your right im about to pull out my hair! i got this thing done stuck it in the water it worked fine right off the bat then the more gas i gave it the slower it ran! i thought i was done with this thing!

Here are a few pics of the motor

idont have the finished pics yet but there coming

That brace is gnarly looking! I like the vintage coke machine also

I'm using a outboard transom mount on my build as well and have been struggling trying to fab up a trim system. The ob mount has holes for statics trim positions but I wanted to be able to adjust it on the fly. Any ideas as far as the trim and very nice build.

coke machine was put on the back burner for now i need to finish it soon! as far as the trim goes, man mine only works when i lift it out of the water. that was the only thing i didnt think threw. mine would have worked better if i had lowerd it 3''. i tried to copy copper head MM theres seems to work good. if you had anymore questions be happy to answer them!

Man that is awesome that you were able to fab up that motor! Best of luck with it. Let us know how it turns out.

Man I hope no one accidentally trips and falls on that brace...could really hurt !!

I wish I had some helpful tips but I've never tried to build my own but it looks cooler then a polar bear's toe nail and I'm sure you'll get the bugs worked out soon....keep us posted, good luck!