View Full Version : Bolt pattern 5 on 5.5 diameter


elroots33
11-11-2010, 09:29 AM
Hello,
Does anyone of you could give me the diameter of the studs on a 5 on 5.5 bolt pattern ?
I must drill a flask with this bolt pattern, but I don't know exactly the real diameter.
Thanks

36-3window
11-11-2010, 09:58 AM
if you are talking about old ford 5 on 5-1/2" , the studs have 1/2-20 thread

Nortin
11-11-2010, 10:11 AM
The drill bit for drilling holes for the studs is undersized so the splines on the stud will cut their way into the flange material. Drill size is critical to a strong stud installation

elroots33
11-11-2010, 05:28 PM
Oh, sorry ... I think I didn't right explain my need ...
Yes, I talk about the early Ford bolt pattern.
When we talk about 5-1/2" (139.7mm), measured between the center of a stud and the exterior of those are not adjacent of it, can we consider this 5-1/2 dimension is also the diameter on which the 5 studs are positionned ?
I must draw on my flask the circle on which the studs will come, and I want to be sure of the diameter.

36-3window
11-11-2010, 05:45 PM
i think we are missing each other with the translation , but if you drew a line through the center of each of the 5 studs 5-1/2 inches would be the diameter

set your compass at 2-3/4"...that's the radius..... then draw a circle from the center point. that will give you the bolt circle. divide the circle into 5 equal parts and that's the bolt pattern

curious...why do you need to put this on a flask? i keep brandy in mine

edit: i wasn't thinking clearly with 2-1/2 , 2-3/4 inches is correct

seb fontana
11-11-2010, 05:50 PM
Maybe means disc..

30spdstr
11-11-2010, 05:51 PM
The radius of 5 1/2" is actually 2 3/4".

mr.chevrolet
11-11-2010, 05:53 PM
the radius would be 2-3/4"

propwash
11-11-2010, 05:53 PM
I think he's asking for the I.D. of the actual stud....

dj

big duece
11-11-2010, 05:53 PM
2 1/2 radius would be 5 dia, 2 3/4 radius would be 5.5 circle dia.

LANCE-SPEED
11-11-2010, 06:11 PM
When measuring bolt pattern its a criss cross measurment, center to center of stud . same as titening lugs. If it was from lug to lug that would be a large pattern?

crminal
11-11-2010, 06:16 PM
Measure center of one stud, skip the adjacent stud, to the outside of the next stud (the third stud).
This is for 5 lug pattern.

shmoozo
11-11-2010, 06:23 PM
Flask?

elroots33
11-11-2010, 06:25 PM
I'm going to make these flasks to change the Volvo 5 x 108mm I have on my rear end to the 5 x 139.7mm of early Ford.
That is to use the same wheels as the front end, where I've got Ford 46 drums.
Thanks for all these precisons

seb fontana
11-11-2010, 06:26 PM
Maybe means Flange....

elroots33
11-11-2010, 06:27 PM
To change the dimension of the rear hubs and the bolt pattern, if you prefer !

sawbuck
11-11-2010, 06:28 PM
Measure center of one stud, skip the adjacent stud, to the outside of the next stud (the third stud).
This is for 5 lug pattern. this is the right way

seb fontana
11-11-2010, 06:33 PM
Ah, wheel adaptors!! Check here...http://rockcrawler-mrt.com/boltpatternref.html

elroots33
11-11-2010, 06:33 PM
Yes, I know that way to measure, Crminal, but I just want to know if this dimension is also the diameter of the circle that studs make !
Your way is to measure, when the diameter is needed to draw and drill the holes, do you understand !?

elroots33
11-11-2010, 06:39 PM
Yes, Seb Fontana, a sort of adaptors, but placed and welded around the Volvo hubs, behind the drums.
I make this job to not use external adaptors which enlarge a lot (about 60mm) the rear end.

crminal
11-11-2010, 06:42 PM
Yes, I know that way to measure, Crminal, but I just want to know if this dimension is also the diameter of the circle that studs make !
Your way is to measure, when the diameter is needed to draw and drill the holes, do you understand !?

I get it now. If I were home, I'd get a circle template out and measure for you.
For now, I'll turn it over to a fellow Hamb'er:p

elroots33
11-11-2010, 06:45 PM
Sorry, guys, it's near 2:00am in France, and I go to bed !! Thanks a lot !