Cpp Spindles Offset Spreadsheet Attached

[LostMy65]

As Jeff at Cpp promised.
just unzip and open
<<attached>>

[LostMy65]

Jeff asked me to post this youtube video on the site.
The video is called “next engine 3d scanner at jay leno’s garage”
He wants people to see the equipment they used to get these measurements.
As he said; 'we don’t use a tape measure and a piece of string! LOL'

http://www.youtube.com/watch?v=ggvzcGdZsTc

http://www.youtube.com/watch?v=qT7oHfMmZLw

http://www.youtube.com/watch?v=cmijRV-qlvc

[LostMy65]

Looking at the spreadsheet, it gives the move out/in in relation to whatever you have and what you're going to.

So yes, it states the move in/out in relation to going from drums to discs.

[chevy_mike]

I went ahead and coverted this to a PDF so it is easier for people to open and not need to download, unzip and open in Excel.

Enjoy!

[LostMy65]

^Thanks.
Great idea.
Posted via Mobile Device

[LostMy65]

Here is Jeff@Cpp's post:

the offset measurements will be different when going from drum brake to disc brakes but never the less i have any measurement needed. I actually have a chart i can scan an e-mail for anyone of you guys to post on the board, who can help me get this done, email me direct at jeff@classicperform.com Thanks Jeff!

[LostMy65]

This thread is in response to a question that has left some confused.
The discussion is in regards to wheels being moved out when converting to disc brakes.
(TrackWidth / Offset)

There's threads and posts scattered through the forums that talk about their wheels being moved outward when converting to discs, or going to drop spindles.
This can be a problem if you are running wide tires, or you just don't want to see you front wheels farther apart over stock drums.

Cpp advertises that their Modular Spindles will Not move your wheels out.
Some have said they move your wheels in.

So the question that we were trying to tag down is:

In relation to what?

'They move your wheels in as in relation to drums, discs, or other brand drop spindles?

Jeff provided the spreadsheet above, and chevy_mike has converted it to pdf that can be read with a simple free pdf reader such as adobe acrobat pdf reader.

Now we want user experiences from those who made such conversions either from drums to discs, or discs to drop spindles, or from another brand than Cpp.

I'll start by adding chevy_mike's:

Originally Posted by chevy_mike

I will share info I have about these spindles. I am going to try to get some actual measurements of these and the stock '65 drums I pulled off.

A happy side note for those wanting to run 15x8" rally or stock style wheels and typically have clearance issues with the lower A arm lip, around the lower ball joint, these give you enough clearance to not rub or require you to trim the A arm (which I don't like). Here is a pic to show the clearance and I did cycle the steering from lock to lock and no issues anywhere.

Originally Posted by lolife99

I hate to say it,... but it looks like that a-arm has already been trimmed.
Normally the "nose" of the lower a-arm is thicker than that.

Originally Posted by Riveted1

I thought the same thing lolife. But, I'm running 15x8 rallies on my '67 w/the CPP modulars right now and they clear just fine.

Originally Posted by lolife99

Now that I think about it,... common sense tells me, it might be because the CPP Modular spindles are only an "advertised" 2 inch drop.

Unlike all the other 2.5" and 3" drop spindles.

Originally Posted by Riveted1

Yeah, I always forget about loosing that .5" drop

[LostMy65]

Originally Posted by chevy_mike

Trust me, these were untouched arm, on original ball joints, with original drum brakes. Pic just looks weird.

Yes, the extra .5" of drop would definitely run into issues with clearance.

Originally Posted by raic65

Chevy_Mike,

You may want to check the clearance with weight on the suspension. A the suspension goes into bump, that clearance will decrease. I had a similiar situation when I installed the CPP spindles on my truck only to find out after putting the truck down, my lower control arms would contact the wheel before full lock.

..........................

[LostMy65]

[LostMy65]

In the 'Changes in Wheel Location' chart above, it states that the CP4S4-1 should only move my wheels out 1/16"
.

.

I really need to take the wheel off a 3rd time and check those measurements again.
Because according to my measurements, it really does look to move my wheels out atleast 3/8 per side.
.
Doing the best I can, I get 6" from center of upper balljoint to WMS.
.

.
For the discs I get about 5" from center of upper balljoint to outer edge of rotor.
.

.
And then another 1-1/2" from outer edge of rotor to WMS.
.



It wouldn't be the rotor itself, could it?

[LostMy65]

I had a chance to triple check my measurements.
This time I ran a straight edge across the wheel and took a measurement to center of upper ball joint. I am absolutely positive the CP4S4-1 moves my wheel out at least 3/8 of an inch, and more than likely 5/8" out.

Although this is contrary to the spreadsheet Jeff provided above, others have posted from hands on experience that converting from drums to discs with even Cpp's drop spindles will move your wheels out. Most have said they saw an increase of around 3/4" per side.

However;
Those who have converting from drums to discs with Cpp's Modulars say they didn't notice an increase in track width.