pic: Cobra box version 2

[steelerborn]

Great questions.

I always like using shaft collars because they are just simple and are very reliable I have never had a problem with one, I have though with snap rings. And there is already aluminum spacers along the shafts (the blue).

The L brackets will be able to handle the transmission, but can be just bought off the shelf. And the rounds were to just minimize sharp corners but is really no big deal design wise.

The worm is a 1 in pitch diameter, and is made of steel. It has only one thread and has a pitch of 12. The worm gear is Cast Iron with 40 teeth and also has a pitch of 12. The pitch diameter is 3.33 inches.

[Tristan Lall]

Regarding the worm gear and its efficiency, for now let me just point you to a couple references found in some old posts, here and here.

Also, see here for more general references about gears.

[steelerborn]

Wow great post, I have already read the Martin Sprocket gear manual before I made the box. But thanks for all the other information on Worm gears.

[AdamHeard]

Originally Posted by steelerborn

Wow great post, I have already read the Martin Sprocket gear manual before I made the box. But thanks for all the other information on Worm gears.

Curious, what kind of machines do you have in house or available via sponsors. Edge tapping long thin plates on lower quality machines (like our mill) can be pretty imprecise for gear spacing. Hard to tell from the pic, doesn't look too long and thin but something to consider.

[cseabury]

Is this design just a suggestion or canyou make available a bill of materials etc?