Friday, September 25, 2009

Filing out holes ...

Here you see two 5/8" holes ...
but I need 20mm holes ...

Having finally filed the top hole out large enough to fit the 20mm bolt ... I am pondering the effort required to file out the other one. I WILL do it ... eventually. But I think I'd rather go get a haircut right now ...
If the option was to go to the dentist ... I'd start filing again. It really takes time to do this, my T-shirt soaked in sweat, I come home all filthy and my wife wants to know what I've been doing ... just filing ...

Wednesday, September 23, 2009

Axle Mounting Tabs

12" x 2" x 0.5" steel plate
Cost me $3 at the local scrap yard.

You don't see both at the moment ...
but I drilled two 5/8" dia. holes ...
after I laid out the two mounting tabs across the steel.
BEFORE I cut the tabs off ... because my little fingers wouldn't be able to hold that little tab when it wanted to start spinning ... and I am allergic to messy blood and missing finger parts.
(Been there ... Done that!)

Why 5/8" (15.875mm) and not 20mm?
I don't have a drill bit that big.
The large rattail file and I will have to enlarge the hole slightly to accommodate the 20mm axle bolt. (sigh) Jack tried to teach me better than to do all that manual labor ... but sometimes you just don't have the appropriate tool ... :-)

The Wheels Came!

This is a 20mm diameter bolt that will be the axle.
That is a 1/4" diameter bolt below it.
I purchased it at my local Industrial Fastener store.
Big-Box and TSC don't carry something like this.

I'm thinking of getting the center turned down a little bit.

The Mickey Mouse ears just arrived today.
The top one has the 20mm axle bolt in it.

The ring on the rear drive wheel is for my GEBE engine.

I've got it leaning up against the tree so you can see the 20mm axle bolt in place. I'm sure the two of them will handle A LOT MORE than 300 lbs. (which is more than I weigh) ... just a little engineering overkill. Next time I'll use 15mm axle bolts and hubs.

Tuesday, September 22, 2009

Still Waiting.

I'm waiting for the wheels to show up ...
they were shipped ... so, any day now.

In the meantime I need to scrounge up some thick scrap metal to make the axle mounting tabs.

Thursday, September 17, 2009

FINALLY -- The Bottom Bracket!!

Here are the headsets dismantled so that you can see the welds ... after I cut out chunks in the middle to shorten them.

Finally ... at long last ... I gave up procrastinating
and worked on finishing the adjustable bottom bracket unit.
This is what a mess it looks like after I finish welding it.
spatter, lumps, and everything.

Here it is after I've sanded off the paint
and smoothed it down with the flap disk.

Yes, I smoothed both front and back.
It looks like I even managed to center
the front derailleur tube on the BB.

Wednesday, September 16, 2009

In Between Shifts

Here's what you wanted to see ...

Okay, so this is where I was starting from today.
in between my work shifts ...
I was able to work on the trike.
I didn't have 2 identical headset thingies ...
But I do have 2 black ones ...
And since they aren't going to be right next to each other ... maybe it won't be so obvious.

Still haven't finished the adjustable Bottom Bracket.
However, the two headsets have been cut-down, resized, welded, and are ready to use on the two front wheels on the tadpole Warrior trike. The wheels are in the mail ... a friend of mine had them made up. Now I just need some scrap 1/2" plate ... to make two small parts.

Tuesday, September 15, 2009

In Between Work

Ok.  So I haven't finished the bottom bracket unit ... yet.

But I did get started on the two headsets for the front wheels.
You can see the two little tubes at the top left ...
The two headset tubes still need to be cut down to size
after I put the cups in the little tubes and measure ...
so they both turn out the same.

One of the head tubes was sitting around ... 
the other I cut out of a small front fork that was laying around.

I'm a little thrashed after 14 hrs of work that finished at 1:30 a.m. this morning ... the trashed part came because I got up at 6:30 a.m. yesterday morning ... and drove 516 miles last night.  I'm just not recovered even after 5 hrs of sleep.  So, I'll get back to this later.

Tuesday, September 8, 2009

Under-Seat Steering (USS)

For my own information as well as yours ...
I took some fotos of the steering on a trike made by S&B Recumbents. This steering has also been modified for the use of a tiller-stick over-seat steering.

This is an overhead view of the steering mechanism.
It uses a round tube at 90 degrees to the main tube.
I believe it has 15mm axle Phil Wood hubs. It is definitely NOT very massive ... quite petite almost, but designed to carry a 250 lb. person.

Here's a view of a hub with the arm and both linkage rods.

This shows the connection between the steering and the linkage arms. There are additional tubes that are actually frame support members and not related to the steering. Pay attention to how the 90 degree arm is connected with the steering headset.

Note the chain routing ...
As wells as the linkage.

Here's a close-up view of the axle connecting with the headset. Notice the grease fitting.

With everything straightened up ...
This is a view of the bottom of the linkage.

Saturday, September 5, 2009

A Little Progress

Looks pretty straight down the length.
The hammer is NOT part of the frame ...
just a weight to hold the frame in place.

Looking from the rear wheel end.

The next step is to make the adjustable bottom bracket.
I clamped a hacksaw blade on each side to allow a little space for paint. See, even dull dead blades are good for something.

It's been welded up ...
only on the outside edges.

I need to "fish-mouth" this tube and weld it on.

Thursday, September 3, 2009

Sanding and Things

They tell me that when sanding pieces of metal tubing with a flap-disk attached to a 4-1/2" grinder ... you should clamp the metal in the vise -- instead of holding it in your hand. Otherwise it is very easy to sand away a few layers of skin faster than you can let go of the grinder switch.

There's the current frame configuration.
I'm trying to decide if I want to make any alterations (such as boom vertical angle) before continuing on ...