Pin Drive Wheel Would like to pick some brains about this wheel I’ve had tucked away in my garage for over 30 years. I’m thinking this might have been on a friends old Pinto from back in the day. Anyone know what this wheel is or what it belongs to. I’d like to get another one but don’t know what it is. It’s a magnesium wheel for sure and the only stampings it has on it is the 6 240 on the outter edge of the wheel. I’m also wondering if it’s for an aviation application (airplane)? Any help is appreciated!
I have no clue so I'm not able to help directly...... But those 6 holes on the backside; are they unthreaded? Not sure why they are there. (?) I do see a "witness mark" circling the spindle hole on the front. Maybe some type of oversized knock-off was used.
I'd bet they are from the Cam-Am series, 70's Formula 1 or Indy car racing from the late 6o's to mid 70's Looks like 15" by 15"
Those are pin drive wheels, an adapter with six pins is on the front hub, or rear axle, and the pins engage the holes in the wheels that are retained by knock offs. And I agree with @Nacifan .
Based on the photo of the wheel face and the ruler it looks like it would be about a 13" rim at the area where the tire bead seats. That seems small for Indy, but then I've never owned an Indy car. Lynn
You may want to delete "spindle mount" from the thread title, as noted above they are a pin drive wheel. The lack of a taper on the front side of the bore for the K.O. tri-bar (or hex nut) to seat against is making me think it is unfinished.
Ok, I understand you. But when you mean unfinished do you mean the machining process. It does had the double-sided tape where balancing weights lived once upon a time ago.
Here’s my odd onesie Halibrand, which is similar to the OP’s. I was told by the seller it was on the #20 car in the 1970 Indy 500. I never could confirm. I’m pretty sure that car wasn’t a Pinto though.
@FunBucket1970 It is from a March 722 Formula 2/Formula B car [Rear] around 1972 vintage Here is a full set Here is a newer March 762 with similar pin drive but no "knock-offs"
Not much to add that others haven't already pointed out, but those stampings to the left of the 6 24o look similar to USAC inspection stamps I've seen on earlier Halibrand Indy wheels. Hard to tell from pics, but the ones I've seen have a year stamped within the symbol. Mag wheels were inspected every year, which would explain why it looks like it was double-struck. Original Halibrand pin drives had a 6x5-inch bolt circle, these may be the same. If so, an NOS Halibrand hub could be used to drive these, but it takes quite a bit of work to make it happen AND you gotta find the hubs first!
During the same year as the March 722 , Lola built a "T240" formula B car that had similar looking wheels. Chassis # HU6 T240 [HU = Huntington Factory #6 model T240] was delivered to Charlie Powell from Riverside Ca. [not far from where @FunBucket1970 is located] So the numbers 6 240 could mean it was designated for the above car. Here is chassis # HU6 After following it's provenance the car was purchased by Alex Penrith (Ojai, CA) 2014) in 2014 [who still owns it] BUT the spoke wheels on the Lola had ribbed spokes [Like Jongbloed wheels] so I think the March 722 is more correct. here is a link on the Lola Heritage website [with photos] http://www.lolaheritage.co.uk/type_numbers/t240/t240.html
I understand. The pinto that belonged to my friend was a Pro Stock Drag pinto. Which saw lots of work out of my garage back in the day. That’s why I had mentioned it probably belonged to a pinto.
with all the off topic photos and talk of Ford Pintos, I am moving this to the off topic forum... and it is "pin drive" wheels not "pin mount"
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