Bombus Speedshop

Bombus Speedshop
Wrenchin' without supervision since the seventies...

Monday, November 23, 2015

Monday, November 16, 2015

More pipes

So the pipework continues.
I left the idea with thick wall piping...for now.
This time I'm cutting up OEM Harley pipes instead.
The other big job with the pipes except positioning the turbos is to step them down from 1 3/4" to 1", what that the turbos have as inlet.
Did some calculation and came up with I have to shrink the circumference from 139,5mm to 79,8 mm.
To manage that I did 8 triangular slots 7,5 mm wide at the top.
This is just a measuring prototype and the final pipes must have some more massage first for the right angles out of the heads to position the turbos.
Buts that's another post......
The 1 3/4" pipe i started with.

The 1 3/4" pipe with slots.

The stepped down end ready for weld.

And the finished testpiece next to the flange.

Think I´m on the right track here, but I have not abandoned the idea with more rigid thick wall piping.
Time will tell wich alternative will walk away as the winner.

Sunday, November 1, 2015

First cut...

The first header pipe cutting exercise just happened.
Number one of MANY before the little snails are mounted for real.
This test fit felt wrong before I even started to weld.
But what the heck, I must start somewhere to make this to the Cosmic Dreamer it will be in the end.
The first, way to snug test fit.

Wednesday, October 28, 2015

The christening

Any project should have a working name and so does mine......from now on.
Hereby I baptise you to Cosmic Dreamer, or CD for short.
Cosmic Dreamer, a suitable name for a build like this.
A girlie bike with out there, dreamy specs, use and time frame.  *Hehe*

Cosmic Dreamer

Sunday, October 25, 2015

Note to self.... Sportster front hubs SUCK!

I have now laced three front Sportster front hubs.
The first, LAST & ONLY.
A Wideglide/rear hub is a walk in the park compared to this.
But now its finally laced and truing is up next.
Truing that I normally dread will be like meeting an old friend compared to lacing.

First I gave the brand new Morad rim a quick polish with the machine and then by hand. 

Then some protective tape to save the delicate, shiny rim. 

And then the madness begun...... There was times when I was very near a breakdown but finally I walked away as the winner. 

Sunday, October 18, 2015

Rear wheel

So the transformation from a fancy pile of stuff to a wheel begun.

Step one, the parts:
# The now refurbished rear OEM HD hub with new bearings and shiny black powder coat
# A shiny Akront rim
# A set of new chrome spokes



Step two, lacing: Basicly to get everything in to place




And a while later a laced wheel was a reality




Step three, truing: Yours truly halfway ready truing and almost ready for a mental institution






Step four, completion: But after lots of anger, adrenaline and instant coffee the wheel was both round and straight





Straight like ruler in the frame


Now the tire must be a part of the setup so the rest of the mockup can continue.

Sunday, October 11, 2015

Blackout

Finally the decision fell in the issue with the hubs.
A nice layer of black powdercoat became the final touch.
Now I'm gonna lace them it to a used Akront 17"x 5,0" rear rim and a new Morad 21"x 2,5" front rim.
But first some new fresh bearings will find their new home in the hubs.