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Steering Rack Identification
Posted: Thu Jan 01, 2015 5:45 pm
by Gary Schulz
Steering rack question; is there any way to tell me what i've got here? Is this a mk1 or mk2 rack? I am trying to sort through several racks and arms I have here and I am looking for my original mk1 rack and arms so I get the right geometry.
How do you tell a mk1 from a mk2 rack?
Thanks
Steering Rack 1.jpg
Steering Rack 2.jpg
Steering Rack 3.jpg
Re: Steering Rack Identification
Posted: Thu Jan 01, 2015 7:31 pm
by Spider
I'm pretty sure that's a MKI Rack.
Re: Steering Rack Identification
Posted: Thu Jan 01, 2015 9:42 pm
by Andrew1967
Mk1 rack has about 2.3 turns side to side.
Mk2 has about 2.7 turns if I remember correctly.
Mk2 also usually has rack centralising machined hole in the inner rack (with a plastic plug in the rack housing) that can be accessed through the grommet in the floor on the other side of the toe board to the column shaft.
Re: Steering Rack Identification
Posted: Fri Jan 02, 2015 3:57 pm
by cheleker
Andrew, caution with the centering hole comparison. Reproduction racks have been made for Mk II+ that do not have the hole.
Anyone know what the turns are for the Pose Pack (a.k.a. Sports Pack) racks?
Re: Steering Rack Identification
Posted: Fri Jan 02, 2015 7:28 pm
by Spider
cheleker wrote:Andrew, caution with the centering hole comparison. Reproduction racks have been made for Mk II+ that do not have the hole.
Anyone know what the turns are for the Pose Pack (a.k.a. Sports Pack) racks?
That's what I thought and not all production MKII racks had them either.
Re: Steering Rack Identification
Posted: Fri Jan 02, 2015 8:44 pm
by Andrew1967
cheleker wrote:Andrew, caution with the centering hole comparison. Reproduction racks have been made for Mk II+ that do not have the hole.
Anyone know what the turns are for the Pose Pack (a.k.a. Sports Pack) racks?
Thanks, that's something to remember.
The number of turns side to side is the easiest way to determine Mk1 from Mk2 then ?
Re: Steering Rack Identification
Posted: Sat Jan 03, 2015 8:11 am
by LarryLebel
I know a MkI has 2.7 turns and MkII is less, so, Andrew1967's numbers are backwards. FYI you can't mix and match MkI/II racks and MkI/II steering arms.
Re: Steering Rack Identification
Posted: Sat Jan 03, 2015 9:13 am
by Andrew1967
LarryLebel wrote:I know a MkI has 2.7 turns and MkII is less, so, Andrew1967's numbers are backwards. FYI you can't mix and match MkI/II racks and MkI/II steering arms.
Hmm, maybe I have got it arse about face and stand to be corrected if so, Larry.
I thought the Mk1 rack had the fewer number of turns which explains the much poorer turning circle of a Mk1
Re: Steering Rack Identification
Posted: Sat Jan 03, 2015 9:29 am
by Spider
Andrew1967 wrote:LarryLebel wrote:I know a MkI has 2.7 turns and MkII is less, so, Andrew1967's numbers are backwards. FYI you can't mix and match MkI/II racks and MkI/II steering arms.
Hmm, maybe I have got it arse about face and stand to be corrected if so, Larry.
I thought the Mk1 rack had the fewer number of turns which explains the much poorer turning circle of a Mk1
I'm sure a MKI had fewer turns than a MKII, the MKI has 15 teeth on the rack and the MKII had 25.