Thanks it is still a prototype in progress but all the parts are there. I would get a real driveshaft made from one piece of 3/4in steel with both ends machined at a machine shop and bushings or bearings instead of wood pieces. Look at my belt driven version that uses normal boat propellers and not rare propellers from vietnam. If i was to do it again i think i would install the whole thing through the floor of the boat (canoe) and run the exhaust so the end is underwater because it makes a lot of noise. The summers where i live are very short so i dont have much time to test it so i lost interest, hopefully you will continue my research

Exterior tube is 1 inch and the shaft is 3/8 the rope is 1/4

@@boatfabricationchannel2991 I watched your other videos after asking that question,,ets see some more videos,,love seeing the longtails that are constructed at home without spending the big money,,you get you welds better,,and don’t b afraid of the shallow stuff,,that’s what these things are made for

@@clayton203 thanks for watching

@@boatfabricationchannel2991 don’t forget a speed test

Yes and it was full speed in this video i always go full speed for the video now im working on inventing the longtail engine that uses normal boat propeller instead of left turning

Thanks for watching! the most i got was 80hours then i made a new version and made new ones but they were still in perfect condition. Now i make them on the wood lathe with hard wood so it should last longer and probably never have to change them. Now i have been working on a version for weeks that uses normal (right hand)boat propellers because they are more available

@@boatfabricationchannel2991 thats good thank you! do you think normal ball bearings would work and be more efficient? if you glue them in place wit epoxy they should not let any water thrue.

@@lucasvanhamburg4937 yes it would probably be better but i have not tried it because i am not at that level of technology yet

@@boatfabricationchannel2991 okay thank you for taking the time to reply

Yes hello the rope works perfect because it absorbs water and it drips out at the top every 2 second maybe so not it never gets hot at all. Also there is little resistance i can spin the shaft with my fingers. I have run it at idle for 10hours straight maybe 5 times and then taken it apart and it was still perfect and it was full of rocks when i installed it. And i go 31kmh now with my new boat and the same engine and propeller

@@boatfabricationchannel2991 I got ya,,gona give this a try,,thanks for the build videos,,great build

At the store but go to a machine shop and buy a 3/4in x96” metal rod and have them machine the threads at both ends or it will end up breaking

@@boatfabricationchannel2991 what ends up breaking? The screw off the rod ends up breaking where you welded it?

Yes the end of the driveshaft ends up breaking because its not aligned properly. It can last from 5 seconds to 90hours. I have not done extended upgrades because we can only use our boats for 3 months of the year where i live so its kind of a useless invention for me.

7hp gas

Yes but its supposed to be 3/4 " because thats the normal size they use in the kits you can buy. I was just too cheap and tought it would work but it ends up breaking