Bockscar 3.0 Streamliner

[Stainless1]

Stainless: Enjoying your latest build! 
Having everything in a systematic state of confusion always helps! 

Woody, I like to think of it as semi-controlled chaos... 

[Rex Schimmer]

One of my favorite quotes that I think came from Einstein, "Neatness is the hovel of a small mind!" I use this to justify the situation in my shop.

Always great to watch your progress Stainless, that car has about the ugliest noise I have seen in a while.

Rex 

[Stainless1]

Hey Rex, it hasn't made any noise yet... but the nose might need a job...   

So i reassembled the rear, torqueing all the studs to 8 lb ft with Loctite and the lug nuts to 65 with anti-seize.  I used an online calculator to figure max torque for a 1/2 inch grade 5 fine thread bolt in 6061 with an inch of engagement .  It told me max torque would be about 80.. So I'm OK with not trying to pull the threads out of the aluminum.
After assembly there was no rattle or movement between the wheels like I had before...
It is a cool design. 

[Stainless1]

Well I guess this is a good time as any to throw out another concept...
One is the Buddfab concept that came with the car... not necessarily a reflection of what was built so far, but fairly close. 

The other is 3.0 to start... it includes the as built as well as some of the direction I'm headed.  Of course Pork Pie put the drawing together.    Y'all know I'm not a fan of big front wheels... that's why I put the ones that came off the liner on the back of the lakester.    This pic has 18 inch front wheels and the back of the motor compartment at 23 inches... that might yet end up at 22.  I might know in a week or so.  It will improve the taper if I can get away with it.  I have to remember the primary purpose is K and J.... and then I if everything sorts out ok.  A dry sump is making the "I" look more possible... I just need to find one... but that doesn't have to happen right now. 
 

[Rex Schimmer]

My vote is for the small tire front end, IMHO it is much more aero.

Rex

[manta22]

My vote is for the small tire front end, IMHO it is much more aero.

Rex

Think "What would Jack do?"

[sabat]

Long, low and languid baby!

[Dynoroom]

The car on the upper left seems to close the hole in the air better...

[bubruins]

I agree with Dynoroom that left looks like it returns to laminar flow easier. I'm going to be making very similar compromises with the lakester project as far as lengthening a section and keeping an open tail for simplicity and reliability. You can always add chute doors later so my priority would be smooth transitions for the lengthened section.

[Stainless1]

Well like I said, concepts.... I'm actually not building either of those... The concept on the left has a 2.5 inch slot for the chute to come out... and only 1 chute. I am looking for ways to reduce the width of the Kammback...  Everything is up for grabs at this point. 
To me the big wheel humps look cool, very "old Streamliner" looking, but I'm concerned the air gets very disturbed up there. 
Stay tuned... more to follow over the next 2 years   

[floydjer]

🤔

[Stainless1]

Yikes! That looks like it should fly... literally... No Jerry, I'm not building that either. 

On the hunt for GSXR 1000 and Hayabusa dry sumps.  The GSXR should fit all the way down to the 600.  I joined Apex Speed Forum... those guys used those motors with dry sumps back in the day... and  I'm now hoping they have some laying around the shop they need to get rid of. 

[tauruck]

I hope you find what you're after Stainless. You'll get lucky. 🙏👊👊

[Rex Schimmer]

A quick note about "laminar flow". Laminar flow does not exist past about the center of the almost any car, even ones that have been designed specifically for long runs of laminar flow, check out Rog Frevogal's build for his streamliner. That car was specifically designed to have "long runs of laminar flow" but the flow became turbulent about half way back. "Attached" turbulent flow is what you are looking for at the rear of the car and the transition from the side of the car to the tapering rear is very important and the original Budfab design does appear to have a better transition.

Rex

[Stan Back]

I don't know much about streamlining (former Street Roadster owner), but I do know that years ago, the Budfab entry set some fantastic records at Bonneville and El Mirage. 

Mayhaps one of you more familiar might post something about the many records they set and comments of how they and with what they did it with.