Main hoop positioning?

S

shoedoos

Apprentice
Jul 3, 2012
85
41
18
#11
This is the foot for my main hoop....pretty much the same spot where your roll cage is going in the pics above.....

p71022-150657-jpg.103519
 
R

RGBody87

Greasemonkey
Jan 7, 2018
118
26
18
#12
Looking good! I'll be posting up when I start installing mine later in the spring. Cant wait!
 
B

bracketchev1221

Master Mechanic
Jan 18, 2018
279
253
43
#13
Yes, you do need to box the C channel frame anywhere the cage will attach. Its not a written rule as far as I remember but if you want to have the car certified, some inspectors want it. You do not have to box the entire channel. A 6" piece in the frame that extends beyond both ends of the tube is sufficient for passing. I had to do the front of the channel on my 70 because of where the A pillar bar attached.
 
GBodyscuffle

GBodyscuffle

Master Mechanic
May 24, 2014
337
342
63
Keysville, VA
#14
Sorry to not reply sooner. Been working 6 days a week last few weeks ain't done much. I have been trying to figure out why the s&w cage kit came with 2 6x6in 1/8th inch thick plates. Any ideas?
 
B

bracketchev1221

Master Mechanic
Jan 18, 2018
279
253
43
#16
Probably for the lateral supports if you install them.
This is why. The main hoop will have 2 short diagonals going from about the height of the crossbar to the driveshaft tunnel. SInce there is no frame there, they use the plates. IF you had ladder bars or a four link, you can tie it to the front crossmember of the ladder bars.
 
GBodyscuffle

GBodyscuffle

Master Mechanic
May 24, 2014
337
342
63
Keysville, VA
#17
This is why. The main hoop will have 2 short diagonals going from about the height of the crossbar to the driveshaft tunnel. SInce there is no frame there, they use the plates. IF you had ladder bars or a four link, you can tie it to the front crossmember of the ladder bars.
OOOH okay I see now. That does make sense
 
S

shoedoos

Apprentice
Jul 3, 2012
85
41
18
#18
I didn't like the idea of welding to the floorpan when the rest of the bars are welded to the frame. Instead, I ran another diagonal across the main hoop just above the driveshaft tunnel then welded the laterals to it......that way any movement on the body cushions won't attempt to crack welds at the tunnel. The rear seat goes in easily and because I spaced the stays wide it is still functional.....

laterals-jpg.103932
main_hoop-jpg.103933
 

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