How do you work out 930 axle lengths?

[Allen Bolt]

I am curious how any of you have worked out axle lengths with two 930 CV joints.

1. Do you start off with the axles horizontal and with the stars pushed as far apart as possible?
2. Do you start with the stars in the middle of the CV?
3. How much do 930 joints plunge anyway?
4. Do you allow for the stars sliding on the axle splines?
5. Do you fix the stars solid to the axle with snap rings?
6. Do you only fix the star at the gearbox end of the axle?
7. What about gearbox and axle setback and compound angles?

Sorry for all the questions at once but any replies and information would be appreciated.

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[baja_driver]

the way I have done it for my car(5-1600) is to move the swing arm up (with the stub axle in) so that the two flanges (tranny and stub axle) are even or horizontal. this gives the closest point they will come together. now measure inside flange to inside flange. then reduce by 1/4 inch per side. for example an axle measured to 18 3/4 inches would then become 18 1/4 for true overall length. this prevents the axle from slamming to hard into the flange on the tranny with arm flex and lateral movement of the axle in the CV's. also I do use clips at the end and limiting straps to limit the angle and make sure I am not hurting the CV's by over extending the axle.

[Fourstroker]

Baja_Driver has got it right on. There is no other way to do it. The short length will always be your limiting factor. Be careful how back angle you have as that will play a factor in your overall CV angle as well

[J.JOHNSON]

Is this on stub axle or floaters?

[Allen Bolt]

I was only thinking about stub axles, but what difference would floaters make to setting the axle length?
Thanks for ally your replies and help.

[Fourstroker]

I was only thinking about stub axles, but what difference would floaters make to setting the axle length?
Thanks for ally your replies and help.

On floaters and/or midboards you have to figure the longest axle length that will fit between the inner drive flange on the trans and the outer hub cap. To some extent the deeper the cap the more down travel you will be able to gain because you will be able to use a longer axle. You will ultimately be limited by the cv angle.

[fraser123usus]

I was told by the local buggy shop to use there mock up axles and do the same set the axles up at zero degrees extend the axles till they touch the hub plates and subtract 1/4 of an inch. If you are only measuring to the hub face your axles may be shorter then they need to be due to the fact that the mounting flanges are dished to acomidate the use of longer axles allowing you to get more angle on your cv's and more travel.