Bockscar 2.0

[SPARKY]

BC II will be the fourth car built on the table that Skip Higginbotham built  it is handy

[manta22]

Stainless;

Better check the size of that rectangular tubing in your floor structure. The inspectors at Speed Week looked askance at the same size tubing that I used in the floor of my chassis. I also had a 7075-T6 stressed panel riveted to the bottom. There needs to be clarification between primary and secondary structural members in the rule book. Some inspectors think that any chassis tubing needs to be 1 3/4" 0.125.

I submitted photos of my bare chassis but so far, no word at all.

Regards, Neil  Tucson, AZ

[kiwi belly tank]

If it's around the driver it will be considered as part of the roll cage & in this case would be 1-5/8 minimum.
You probably should seek prior approval on that before moving on Mate.
  Sid.

[Stainless1]

The old floor structure was 1 x 1 tube between 1.5 inch frame rails... and about half as much as I am adding here.  I will send an inquiry to Lee Kennedy, but I am not concerned.   There are 1.66 frame members and cross members integrated with the 1.5 x 1 sub-frame floor members.   I finished the floor except for a couple of inches of welding that I can't get to... yet.  So far the car is built a lot tougher and safer than the last one.

[kiwi belly tank]

Would hate to see you get caught out by rule 3.B.1 "minimum 1-5/8 round tubing - including the bottom & rear".
  Sid.

[Stainless1]

I see what you are saying, but there are 3 larger than 1.625 x .120 cross tubes in the driver protection area on the bottom.  There will be 4 across the back, God only knows how many on the sides and 3 on the top.  Note to Lee going out this morning.

[kiwi belly tank]

Yeah, best to cover your a$$, no pun intended!
  Sid.

[Stainless1]

Yeah, best to cover your a$$, no pun intended!
  Sid.

Sid, that looks like pun intended to me 
Just ordered axle materials (necessary for those of us that live in the boonies) onlinemetals.com has 25% off thru Wednesday.  No I am not pitching products, just helping my fellow racers find material at a reasonable price.  These guys had the best price before 25% off.

[Sumner]

... onlinemetals.com has 25% off thru Wednesday.  No I am not pitching products, just helping my fellow racers find material at a reasonable price.  These guys had the best price before 25% off.

I get all my aluminum from them, just got a bunch.  I get all my steel from a local shop.  I usually buy full sticks and the guy gives me great prices.  A few years ago when steel went up I wondered so call all the places in Farmington, NM and he was way under them.  For aluminum I do better with onlinemetals.com.

You are moving along quickly.  Thanks for the posts,

Sumner

[Stainless1]

Sum, I find a lot of my material at the Yard here in Wichita, but no one has 1 & 1.5 x .250 4130 tube around here.  Found one place that had it in their Chicago warehouse for twice the price...

[tauruck]

Ihaven't been online much lately but the project looks good guys.
Thanks for the inspiration.

[Rex Schimmer]

Stainless,
Did you mean 1.5 inch dia x .25 wall, 4130 tubing? not 1inch x 1.5 inch x .25 wall 4130 tubing? which I don't think is a size that is available.

Rex

[Stainless1]

Rex, ordered both 1 x .250 for the spindle holder tube and 1.5 x .250 for the axle. When assembled it will look a little like this... although the locating divots may be in different places since the front end suspension design may change if we eliminate the VW front suspension and go 4 bar.

[Stainless1]

I picked up the JD2 model 3 bender from my friend Eric.... the 7.5 inch CL radius die set showed up, so I made my first bend.  The calculations said start with 57.4 inches of tube... I decided to play it safe and did 60, bent the tube, cut the legs off since there was extra on both and here we are....
I need to cope the bottom of the legs, then the cross bar a little for the hoop and I think I have the back of the hoop ready to weld in.... or at least tack in. 
The bender did a nice job on the bend.  Front hoop next after that...

[4-barrel Mike]

Sweet! 

Mike