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Flaming river rack and pinion for headered Mustangs

  • Thread starter Thread starter artbillingsley
  • Start date Start date May 26, 2004
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65 fastback

Founding Member
Mar 17, 2002
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Northern VA
Jun 2, 2004
#21
  • Jun 2, 2004
  • #21
I thought he said at one time that the turning radius is no worse than TCP's rack?
Click to expand...

TCP's turning radius sucks. That's the biggest grip I have with my R&P.

What is the turning radius of Randall's Rack?

Tim
 
6

68 & 00 GT

New Member
May 14, 2003
2,407
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0
HOUSTON TEXAS
Jun 2, 2004
#22
  • Jun 2, 2004
  • #22
65 fastback said:
TCP's turning radius sucks. That's the biggest grip I have with my R&P.

What is the turning radius of Randall's Rack?

Tim
Click to expand...
that means how sharp you can turn right ?
 
R

Ronstang

New Member
Apr 4, 2004
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Jun 2, 2004
#23
  • Jun 2, 2004
  • #23
63_Fairlane said:
A couple fo questions for Randal:

1. Is all of the force riding on the center bolts or does the mounting block have some guide material for the link?

2. Are all of the include fasteners grade 8?

Thanks for the replies.
Click to expand...
Even if the mounting block has lips machined in to spread the load to the actual rack it is of rather small area and the long length of the overhanging centerlink ends + the tie rods themselves are going to try to produce some rotational movement at the block. If there is no deflection there I would be very surprised, and if there is some I still would not be comfortable relying on 2 grade 8 bolts for my life and anyone else on the road near me.
 

skywalker

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Dec 22, 2003
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Pensacola, FL
Jun 2, 2004
#24
  • Jun 2, 2004
  • #24
65 fastback said:
TCP's turning radius sucks. That's the biggest grip I have with my R&P.

What is the turning radius of Randall's Rack?

Tim
Click to expand...
And stock is great?
 

65 fastback

Founding Member
Mar 17, 2002
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Northern VA
Jun 4, 2004
#25
  • Jun 4, 2004
  • #25
And stock is great?
Click to expand...

That's what I mean. The stock turning radius isn't great and the TCP Rack & Pinion turning radius is WORSE.
 

skywalker

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Dec 22, 2003
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Pensacola, FL
Jun 4, 2004
#26
  • Jun 4, 2004
  • #26
65 fastback said:
That's what I mean. The stock turning radius isn't great and the TCP Rack & Pinion turning radius is WORSE.
Click to expand...

See that contradicts what I had previously been told, which was that the TCP radius is about the same as stock: any change is negligible.
 
7

70XR7ConvertCat

Member
Jun 1, 2004
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Livermore, California
Jun 4, 2004
#27
  • Jun 4, 2004
  • #27
65 fastback said:
That's what I mean. The stock turning radius isn't great and the TCP Rack & Pinion turning radius is WORSE.
Click to expand...

Do you have any way to quantify the increase in turning radius? I've been told by Speed Direct the turning radius on the soon to be released Steeroids rack http://www.speeddirect.com/index.aspx?nodeID=75 appears to be no worse than stock. In other words, if there is any increase it isn't noticeable.

Steve C.
 
R

Ronstang

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Apr 4, 2004
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Jun 4, 2004
#28
  • Jun 4, 2004
  • #28
70XR7ConvertCat said:
Do you have any way to quantify the increase in turning radius? I've been told by Speed Direct the turning radius on the soon to be released Steeroids rack http://www.speeddirect.com/index.aspx?nodeID=75 appears to be no worse than stock. In other words, if there is any increase it isn't noticeable.

Steve C.
Click to expand...
I think they are using a J-Car R&P which means that there is no way they are going to be able to maintain the stock steering radius. I did quite a bit of R&D with this rack about 7 years ago and I can tell you that it simply does not have the travel. SpeedDirect's R&P is also not going to clear any type of tubular headers so I guess their engineers are as stupid as FR's since it seems they missed the largest part of their target market.
 
V

vrooom

New Member
Apr 17, 2003
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Jun 5, 2004
#29
  • Jun 5, 2004
  • #29
Ronstang said:
I think they are using a J-Car R&P which means that there is no way they are going to be able to maintain the stock steering radius. I did quite a bit of R&D with this rack about 7 years ago and I can tell you that it simply does not have the travel. SpeedDirect's R&P is also not going to clear any type of tubular headers so I guess their engineers are as stupid as FR's since it seems they missed the largest part of their target market.
Click to expand...


Did you hear that from someone at SpeedDirect?
 
R

Ronstang

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#30
  • Jun 5, 2004
  • #30
vrooom said:
Did you hear that from someone at SpeedDirect?
Click to expand...
Hear what? It looks like a J-Car rack, I have heard from others it IS a J-Car rack, and I can tell by looking at the pictures that the orientation of the mount and rack are right where every header I have ever installed needs to be.....plus I have heard it does not clear headers. I do not remember where I heard any of this info because I knew looking at the pics the first time I saw this setup a month or so ago that it was not going to work to my standards so I never followed up on what I heard.
 
7

70XR7ConvertCat

Member
Jun 1, 2004
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6
Livermore, California
Jun 5, 2004
#31
  • Jun 5, 2004
  • #31
Ronstang said:
...It looks like a J-Car rack, I have heard from others it IS a J-Car rack, and I can tell by looking at the pictures that the orientation of the mount and rack are right where every header I have ever installed needs to be...
Click to expand...

Randalls Rack uses a J-rack, but I don't know about Speed Direct. Rack travel isn't the only factor determining turning radius. For example, if the tierods are moved inboard at the spindle (shorter lever arm), some loss in rack travel can be compensated for. The information I posted about turning radius came directly from Speed Direct, BTW.

Steve C.
 
R

randallsrack.co

New Member
Apr 10, 2003
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Jun 10, 2004
#32
  • Jun 10, 2004
  • #32
Good questions. The system has been designed to prevent twisting forces on the bolts. The center block takes all the twisting force and the bolts apply clamping torque. Bolts are not intended to apply torque AND resist twisting forces at the same time. This was one of the riddles that had to be fixed to make this design work.
Randall
 
R

randallsrack.co

New Member
Apr 10, 2003
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Jun 10, 2004
#33
  • Jun 10, 2004
  • #33
Bolts

Good questions. The system has been designed to prevent twisting forces on the bolts. The center block takes all the twisting force and the bolts apply clamping torque. Bolts are not intended to apply torque AND resist twisting forces at the same time. This was one of the riddles that had to be addressed to make this design work and it was not the only riddle either.

www.randallsrack.com
 
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