Possible SBP to LBP adapter group buy?
Hi all,
After rebuilding my front suspension and upgrading my drum brakes to '73 up discs, to get my car to a single bolt pattern quickly, I've decided to just get adapters for my rear axle. I'll maybe look at a different rear axle this winter or further in the future. Looking at the options I've found on amazon, ebay, etc, I'm a little disappointed. most have a really large center bore (70-73MM) making them lug centric to the car, and taking a lot of meat out around the lug nuts (see image below). When I used bolt on adapters on my 5th ave as spacers to run mustang bullit wheels, the adapters were hub centric to the car, and I feel that is pretty important, especially given our cars only have 7/16" lug studs. the other crazy thing, is of the options I found, all but one used metric M12-1.5 studs instead of 1/2-20(?!).
On a weekend, I quick designed an adapter that would be hubcentric to the car as well as hubcentric to the wheel. I sent it to a machine shop I've worked with in the past for work to get a quote for 2, and they were quite expensive. I know with parts like this, piece price usually goes down with quantity, especially if he's developing a program for a CNC mill or lathe just for 2 of them. I've asked him how many he'd need to make to get them into the $80-100/pr range, told him of the potential market for a product like this, and if he'd be interested in doing a limited run. He's going to get back with me soon with what that number is. In the meantime, I got the OK from the administrator of the site to gage interest and see how many might be interested in a group buy.
here are the details:
they'd be machined from 6061 T6 aluminum.
they are 1" thick
lug nut pockets are 1.16" diameter (I measured my 3/4" impact socket, and it's 1.12" diameter, non impact 1/2" drive was 1.05")
I've designed it with a 59mm inside bore (2.323") to make them hubcentric to the car.
I currently have them designed with a 1/4" tall, 2.81" hub for the wheel (mopar size) so the wheels would be hubcentric to the adapter as well.
I was assuming just using the same studs the rear axle uses, so the stud holes/pockets are currently sized for these studs:
https://www.rockauto.com/en/moreinfo.php?pk=1060239&cc=1243178&pt=7680&jsn=850&optionchoice=0-0-1-1
would anyone be interested? if so, let me know either in PM, on this thread, or email me at [email protected] with the subject "FABO wheel adapters" so I see it easily in my flood of junk mail.
now some feedback I'd like from you guys in this thread:
1) would there be more interest to make the adapter hub ford sized, to make them hubcentric for those who want to using OEM or aftermarket wheels intended for mustangs? if so, can somebody verify the hub size? I think it's 70 or 70.5mm (2.756-2.776), but am not certain.
2) would you be OK with getting just the aluminum parts and a recommendation for wheel studs, or would you prefer to have them fully assembled with studs?
3) is there a different/better wheel stud? I found some other options under the generic section on rockauto that I was looking at, too, and may switch to these: https://www.rockauto.com/en/moreinfo.php?pk=9842748&cc=0&pt=7680.
4) would you want 7/16-20 lugnuts included to bolt to the car?
Hi all,
After rebuilding my front suspension and upgrading my drum brakes to '73 up discs, to get my car to a single bolt pattern quickly, I've decided to just get adapters for my rear axle. I'll maybe look at a different rear axle this winter or further in the future. Looking at the options I've found on amazon, ebay, etc, I'm a little disappointed. most have a really large center bore (70-73MM) making them lug centric to the car, and taking a lot of meat out around the lug nuts (see image below). When I used bolt on adapters on my 5th ave as spacers to run mustang bullit wheels, the adapters were hub centric to the car, and I feel that is pretty important, especially given our cars only have 7/16" lug studs. the other crazy thing, is of the options I found, all but one used metric M12-1.5 studs instead of 1/2-20(?!).
On a weekend, I quick designed an adapter that would be hubcentric to the car as well as hubcentric to the wheel. I sent it to a machine shop I've worked with in the past for work to get a quote for 2, and they were quite expensive. I know with parts like this, piece price usually goes down with quantity, especially if he's developing a program for a CNC mill or lathe just for 2 of them. I've asked him how many he'd need to make to get them into the $80-100/pr range, told him of the potential market for a product like this, and if he'd be interested in doing a limited run. He's going to get back with me soon with what that number is. In the meantime, I got the OK from the administrator of the site to gage interest and see how many might be interested in a group buy.
here are the details:
they'd be machined from 6061 T6 aluminum.
they are 1" thick
lug nut pockets are 1.16" diameter (I measured my 3/4" impact socket, and it's 1.12" diameter, non impact 1/2" drive was 1.05")
I've designed it with a 59mm inside bore (2.323") to make them hubcentric to the car.
I currently have them designed with a 1/4" tall, 2.81" hub for the wheel (mopar size) so the wheels would be hubcentric to the adapter as well.
I was assuming just using the same studs the rear axle uses, so the stud holes/pockets are currently sized for these studs:
https://www.rockauto.com/en/moreinfo.php?pk=1060239&cc=1243178&pt=7680&jsn=850&optionchoice=0-0-1-1
would anyone be interested? if so, let me know either in PM, on this thread, or email me at [email protected] with the subject "FABO wheel adapters" so I see it easily in my flood of junk mail.
now some feedback I'd like from you guys in this thread:
1) would there be more interest to make the adapter hub ford sized, to make them hubcentric for those who want to using OEM or aftermarket wheels intended for mustangs? if so, can somebody verify the hub size? I think it's 70 or 70.5mm (2.756-2.776), but am not certain.
2) would you be OK with getting just the aluminum parts and a recommendation for wheel studs, or would you prefer to have them fully assembled with studs?
3) is there a different/better wheel stud? I found some other options under the generic section on rockauto that I was looking at, too, and may switch to these: https://www.rockauto.com/en/moreinfo.php?pk=9842748&cc=0&pt=7680.
4) would you want 7/16-20 lugnuts included to bolt to the car?