Rear splined hubs and splined axles

[Mechanicaldan]

Hi all,

I was just wondering how other teams deal with the internal splines required for a rear wheel hub?

We have purchased Suzuki Alto CVs in the past and have gotten the hub wire EDM splined by one of our sponsors, and then we do the rest of the machining to the hub. We often experience a long delivery time due to the work load at our sponsor. (3 months or more to get our parts splined for free, so we wait.) We sent out for other quotes this year, but $1000 for 2 hubs in NOT an option for our team.

Has anyone considered using an available ATV rear hub?

Anyone else manufacture their hubs and care to share how they do it?

Cyclone Racing
www.cyclone-racing.com (http://www.cyclone-racing.com)
Iowa State University
Project Director

[Ben Beacock]

We're using Suzuki ATV CVs and machined our own aluminum hubs. They're currently out being splined by a sponsor and should be done next week (about 2-3 week turnaround). We're really lucky to have them since we have 4 half shafts, a shaft extension, differential input shaft, 4 hubs, front driveshaft, rear driveshaft and probably more to do!

I've never heard of wire EDM splining but it sounds expensive. The company we use has machines that reciprocate and cut them out with a tool. They told me they have about $1mil in tooling for various splines and gears.

Ben Beacock
Co-Manager
2004 Gryphon Racing - University of Guelph (http://www.soe.uoguelph.ca/uogracing)

[Travis Garrison]

When we have to do splines we try to make our own sinusoidal splines when ever possible, dirt simple to make on a cnc mill...course if you don't have access to cnc equipment this won't help you much...

Here's a pic of the splines..

http://dot.etec.wwu.edu/fsae/images/Sinusoidal%20spline%20on%20cv%20tripod_JPG.jpg

We have also made stubs to weld onto the atv cv's I believe your are talking about...and after you've got the male sinusoidal spline on your cv, doing the hub is a cake walk.

I believe the machinists handbook also has a couple of options listed (even supplies strength calculations) that, while not always the easiest thing to make are much simpler to pull off than conventional splines in your average shop...

Travis Garrison