Nickel and diming....

This project has been nickeling and diming me for years on my time but now I figured I should just hammer down and build it because I have the tools to do it...

When I started this concept a few years ago with my brother, I knew I could finish it quickly and it would turn out like the Gravity bike and everyone would get stoked but the more I ran with the concept and split off with my brother the more I realized I was becoming a machinist for stuff but I was still missing the CNC part to really make my parts stand out...

I can machine anything by hand to a point but it often requires special attention on things like finish work because its not a perfect smooth finish but cnc offers you a showcase of the machining effort you have put in to it, its why people love aircraft parts and crazy cnc bicycle and motorcycle parts. Theres something about leaving the raw machine marks all over it and not polishing it to a glass like finish that sometime once anodized looks like plastic...

The more I left it sit on the frame table the more it would bug me looking at it but my customers come first and its not to say that I am short on work, what you see on my blog is about 20% of the projects I can show without getting sued or thrown in jail, so it took the back burner... maybe not even the back burner, maybe almost refrigerator with a cover over it...

The day came where after some sweet wheelin and dealin I scored the CNC Bridgeport Boss 10 and did the retro fit to a brand new drive and PLC ready to take on the most complex jobs, then came the teaming up with Autodesk's new company called HSMworks which links to Solidworks and Inventor for CAM ( see the old blog posts for more details) and with those 2 things the door finally opened on making crazy parts a reality... No paying for machining that I can't afford... I would do it myself and let it run all night on crazy parts.

   This is the project my brother and I came up with to build and I have been running with it since it was sketched... Lots still to come but day by day this thing is coming together....

                              

 

So come along with my machining adventure in the next weeks to see this beast come to life...

Machining aluminum softjaws to hold a expanding mandrel

plus it makes a perfect origin 0,0 right away after cutting 

I wouldn't call them softjaws really because it would still hurt if you got them thrown at you, but in the machining world anything made of Aluminum is called SOFT... ha, whatever....

These are the hub blanks Liem made on the Lathe using HSMworks Lathe Cam software

As you can see the one side of the hub was done but the other side needed to be hollowed out, plus I wanted disc rotor mounts and because the Haas Lathe we did the work on didn't have live tooling we were stuck doing it this way.

This is the expanding mandrel in my hand

 

Perfect fit ready for the hub.

Here we go... clearing it out with a pocketing cutting feature.

I didn't use a big end mill because I didn't want a lot of cutting pressure to cause it to possible spin or move on the mandrel...

Don't call me a pussy

 

switched over to a long 12mm ball end mill with relief to do this deep cut

Looks great but it was ringing like crazy so I put this wrist band I got from Autodesk University on it to reduce the chatter, perfect!

VIP status...

check that out!!!

With the mounts for the floating rotor!

On to the next parts

Dropouts on this bike are a wild one too, if you scroll up to the 3d model of the bike you will see the crazy machined dropouts so here we go... making chips.

 

cutting away..

I really like the look of ball endmilling the radius in to things and also the radius on these parts varies so theres no way I could use a normal tool

At the end I did a webbing and the part was held in by a few pieces and then I cut it out with a aviation shear... easy and fast and then I made another side in a mirrored image.

Thinking time... Sometimes its easier to draw and look at a part then using crazy modeling software.

I feel that a lot of newer engineers don't understand how important this is... you don't always need to sit and stare at the computer to make parts, go out in the shop and smell the oil.

Surplus Lockheed 6-4 Titanium

Blocks of it ready to become a king pin steering set up for the cable steering front end.

I really freestyled this part, I hope it works...

Roughing Titanium is a learning experience

If you don't machine it a lot it can be very costly if you mess up...

Called up Tom at Ox Tool to make sure I had everything right, hes rattled off the numbers on the phone by memory....

.375 depth of cut - 8 ipm at about 900 RPM with a .120 step over with a 4+ flute endmill 

He knew it... maybe he has done it before....

Side one getting some ball endmilling

and some clean up in the bearing pockets, you will see in the next weeks how this part works. 

it worked out pretty good, have to debur it and do some finish work on it but I think it will work to get the bike on the ground as a roller, just think this could have been some crazy part at Lockheed... but they were going to scrap it so I put some life back in it by making a mini F22 Raptor style steering link part... Kind of like Lockheed Skunkworks around here...

 

I got so excited about aerospace stuff I had to make a cart....

Built this beast in a few hours out of the junk laying in the off cut pile next to the saw

MLS Aerospace division just got a fresh new cart, off to powdercoating.

 

Trying is dying

Well.... I made it another year older and if you don't know I am 72 years old.... or maybe its 27.... either way I feel old in the bones...

Thanks for the birthday wishes...

I was standing around and I said to Gabe, lets build something really really rad that no one seems to think is a good idea or safe, something we can build in a day or two and take to Salton Sea to have fun with for my birthday and with all the friends from LA.

We thought about if for a few and we came up with a crazy idea to build a new flame thrower but making it powered by people to keep it more of a team builder and involvement...

Well, How would we tackle such a thing....

The more I stood there thinking the more I realized why not go backwards and build something that's suppose to put out the fire.... Like a fire pumper truck.... to shoot flames... now were talking....

But its just toooo easy just hooking up a motor to it and sitting back and shooting flames, one person can do that, and the idea was a team builder so the more I thought...

Got it!

Build something like a 1800s Fire pumper

With the fuel taking the place of the water

Some different examples of styles

It would take a full crew to make it happen back in the day, pretty neat to think of this beast throwing flames....

 

So we started with a new style of the hand pumper just freestyling...

I can't just build what has been built... that's no fun...

 

We decided what would be cooler then making it kinda like a engine and making the people the pistons and have it hand cranked as opposed to hand pumping vertically...

Heres what we tried...

First we did some sketches of what madness was in the brain...

Using some stuff laying around we made a fixture and started making a hand crank.

We used some laser drops from Seaport Stainless  = Free

 

Gabe is welding up some of the Brown and Sharp Cams we got from Edward Koehn Swiss Machining , these would be links to the tube we had left over from the Oakley Project = Both Free

Action shot for the ladies

We had these vertical steel tubes from a old Red Bull prototype ramp we built that never worked..

Free !!!!

Gabe did a sweet job cutting these holes in line...

Did you know hes in school to become a machinist now?

And is now CERTIFIED as a level 1 Machinist

I think I am a level 2 so I will watch the level 1 and ask questions....

Tacked up some sweet bearings and holders we got from

Performance Machine that get put in their motorcycle wheels, these were some leftovers from R&D

Ok... Well I didn't take many photos that afternoon because my camera went dead so heres where it went to next... A swiveling gunner seat and the Hawl Pump mounted..

Hes been waiting all year for photos like these so he can put them on facebook

He should have been a gunner in the Army...

That chair was in the trash.... so we welded it to a giant lazy Suzan bearing left over from a bar stool..

Both free 

Having a good stop for the swiveling seat I used the axle sticking out.  

Heres a side view...

 

Ok so that night I made some stuff on the gunner seat...

I was on one of the possessed fabrication nights where all I wanted to do is build... Wait... that's every night...  

 

That's some old garage door bearing rollers I cut apart and just welded the bearings on to make the gun have movement in 360 degs.

That pressure washer gun I found in the recycling at the Exploratorium because it had cracks in it...

FREE!!!

This is a shot of the wood chain guard which was a backup for a exhibit at the Exploratorium called Echo-Tube and the pump was found during the move out of the old museum, Dave Fleming and I found some really good stuff while packing up.

Close up of the brown and sharp gears that I got from the Koehn Machine shop and the big monster #50 sprocket was from when I did R&D work for Clorox, it got the wrong bore in it...

FREEEEEEEEE!!!!

Close up of that sweet pain job and pump....

Sweet 1" aluminum pipe over 1" steel tubing...

Perfect for a handle grip.

 

As you will see that's some left overs from Greg Minnaar's Bike Shop racks...

The propane tanks are held by a sample of an aluminum sail boat mass

You can see the sweet bearings in the gunner swivel at the top left of the photo.

both ----   FREEEEEEE

The seat was mounted on this giant Stainless Steel Gate Valve I found in the recycling at the Exploratorium.

I cut the back and shaped it so it didn't hang over - custom & FREEEEEE

Those are engine puller ( cherry picker ) legs at the bottom with wheels, Some one stole my cherry picker from my shop ( classic Oakland style ) but they forgot the legs.. so that week we decided it wasn't going to return so we welded the leg on the bottom, That engine puller was free so I can't complain... Making those Legs FREE too

Overall shes a sweet piece of scrap metal all welded together...

I can't say it was the best idea....

Gabe even painted his truck to get ready for the flame thrower... !

 

Then... I got a hernia and my intestines dropped in to my ball sack...

Fuck that.... I had to go get surgery for my birthday...

So much for going to desert...

and the dream of blowing minds shooting flames...

The healing process in California is styling... My titanium hand made pipe got used for a few days...

 

Well... I am resting these days but it was a bummer we didn't get to go to the desert and test.... Maybe soon...

Check out these videos to get a good idea of what we built.. 

 

This video shows us running the pump at full speed, its bypassing pressure and is not easy to pump...




We didn't have any water left in the tank for testing...

Enjoy - and don't get burned.... Until next time....