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Thanks Mike but that's not what I'm after. This is preliminary test hardware to develop a production design. Production intent is injection molded. I am sourcing properly cut bevels with tooth thicknesses adjusted to balance strength for test. My parallel depth effort above is a...

http://i965.photobucket.com/albums/a...x/DSCN3757.jpg I used #2 and #8 cutters. I can see a little too much curvature at the large end of the pinion. Small ends look pretty good and they do roll smoothly in my hands. Next step is to run them and see what happens. Question: I would like to...

I have a straight bevel gear design, 13/45 tooth 2 module using Dudley's "Handbook of Practical Gear Design". Standard calculations are based on large end of the gear. I wish to produce approximate gears using the parallel depth method. I have altered the face width so the small end matches 1.5...

If you think about this the other way around meaning increased CSA upstream rather than reduced CSA downstream it makes a lot more sense. Whether it's worth doing or not or causes some other problem are different questions.

Ivymike's suggestion sounds like a Zeromax to me. http://www.zero-max.com/products/drives/drivesmain.asp

Well both actually. Probably violating many accepted lubricant thumb rules. My original question was use of motor oils for lubricating rolling and sliding elements of machine tools exclusive of geared heads with a sump. I do actually use kerosene, motor oil, and "xtra thick" cutting oil and...

I know the safe bet is to use the lubricants recommended by the machine tool manufacturer. However, I've used motor oil for years in my milling machine and lathe. Lighter weight in the milling spindle and 50W racing oil most everywhere else. I've been told that using detergent oils in a...

How about a relief (deeper root) in the root of one or both elements? I've seen this used on roller chain sprockets in agricultural applications. Rather than debris packing hard in the root, it squirts out the side through the relief. In this case the debris is primarily soil and crop residue.

Also be aware that polymer gearing in general is quite sensitive to operating temperature whether ambient or due to heat generated by the gears in operation. Common gear materials such as acetal or nylon are roughly 1/2 as strong and 1/2 as stiff at, say 200F, compared to 70F. Second the...

"poker chip" is the term I've heard and use. Not really a technical term but most understand the meaning.

A star means I agree!

Stezza, I think you must have mis-typed. Inside fiber sees higher stress.

X2 what alansimpson said. Air cushion at the end of the stroke should do what you need. Think of an old tape machine teletype carriage return. Very fast with an air cushion at the end of the stroke.

http://en.wikipedia.org/wiki/Chrysler_Turbine_Car Can't say this car is indicative of better engineering or not but I think it's very cool.

Flexon is a source for roller chain sprockets with hubs often fully machined from near net forgings. I envision your flange needs might be similar. Perhaps they would be interested in providing forged blanks. http://web.flexon.de/index.php?id=748

Rock music is tough to hear in a vacuum too!

Be prepared to do a lot of math. Get as many transferable credits as you can from junior college so you can avoid competition from other students in the lower level courses.

You could revise lubrication to increase flow and/or cooling. Is it running hot currently? Might give you a clue toward service factor.

I would try lasleeve.com to find something close then modify for your needs. A lot less work and known materials. They have a sleeve part number listing by diamter.