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Re: [GMCnet] lower steering shaft complete new replacement [message #265674 is a reply to message #265670] Sat, 08 November 2014 16:54 Go to previous messageGo to previous message
Matt Colie is currently offline  Matt Colie   United States
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
Senior Member
KB wrote on Sat, 08 November 2014 17:15
I thought Alex was concerned with centering both the gear box (relative to the wheels) and the u-joint (relative to the gearbox), but maybe I misunderstood.

What I was trying to ask is which is better: a CV joint and a single non-linear u-joint (OEM configuration), or two u-joints phased to mostly cancel out the non-linear rotation? I've no clue. Maybe it doesn't much matter in a non racing application. High speed cornering in a GMC upsets the dog (and the passenger...) Shocked

Karen
1975 26'

Karen,
You are right about centering the steering box relative to the wheels, and when that is right then the lower U-joint is also centered.

There is another little gotcha in the CV joint to the steering wheel. If the steering shaft (not the wheel, but the shaft) is not straight ahead when the wheels are, then signals won't set or cancel - pick one - and the wheel won't lock at anything close to center.
I had to play mix and match for most of a day to get that all back the way it was supposed to be. It was worth it.

And - About Corners...
We love it when a pickup is tailgating us into an exit ramp. The dog is usually flat on the rear bed and we always stow to travel, so we go in to the turn and watch him struggle to stay with us.... Smile

In engineering circles, a normal Cardin (cross type universal) joint is deemed to be acceptable to about 12° of offset. And the irony comes that they don't like being zero offset because the rollers won't circulate.

Matt



Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
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