<span class="highlight">Boat</span> <span class="highlight">Loader</span> reduction gearbox details needed

Thnaks for that...looks very good apart from the initial lift to the vertical.......

.I do have a front mounted winch such as you have and am considering some form of yoke to pull it from the upright position and up and over as well

maybe at the end of the day I may have to lift just like you do abd then follow your example

cheers

say what,,,, my spelling is crap...... beer oclock time :-)

Thanks for that......what I am chasing is the specs or where to buy a worm drive reduction gearbox suitable to be turned by a 12v electric drill..

this is what the commercial loaders use.........I was hoping someone with one can look on theirs and see if it has a brand or sticker or specs

jump on line .... rs components australia ..... everything you will need to build what you want ,,(well i think anyway..)
Cheers
Joe

I did not see any worm drives in the latest RS components catalog.

Bungarra, I'm making my own worm drive. 36:1 should do it, testing this tomorrow.
Its a side loader BTW.

V8...I am not completely locked into a rear loader and would be interested in any comments and ideas you have on the side loader you are building

as for making your own worm drive that sounds like something interesting but tricky......I have a well equiped workshop but I am assuming a lathe of some sort is required unless there are various componets off the shelf that you are sourcing?

cheers

bungarra, the reason for a side loader is the 26' sailboat hitched behind the car - too much trouble to unhitch it to load/unload the dinghy.

Making worm drives is not too tricky - I'm not a machinist - but doable on a decent lathe. The worm only requires a feed ratio to suit (4mm pitch in my case) and a tool ground for acme thread.

The gear is the tricky bit, I managed to adapt the thread cutting spindle with an addition of a toothed belt sprocket. This drives another at about level with the compound feed handwheel. I then fit my dividing head in place of the compound feed, couple its input via universal joints (from 1/4" socket drives) to the output of the toothed belt shaft.
Working through the change gear ratios of the thread cutting spindle I found a large number of gear teeth were possible, from 36 to many hundreds...

The table of the dividing head is horizontal and rotates the gear blank at the disired speed ratio to the lathe spindle. A single cutting tooth rotating on a shaft between chuck and life center does the gear cutting.

Good luck if you're game to try this, I found it fun to figure out, have never read or heard anybody else doing it this way.