[kba-pro]

After success execution of several CRF's swing arms shortenings one of our team body asked to do the same on his FS450. And we decided why not.
Happy owner and bike on the picture.

 

[kba-pro]

As usually we started with object digitalization:

 

[kba-pro]

All critically important areas and surfaces are found and marked in red. This is from what CAD designing of the Jig will start.

 

[kba-pro]

CAD design of the Jig is made.

 

[kba-pro]

While waiting for the Jig parts cut with a laser, made the bath for swingarm.

 

[kba-pro]

Well, parts from laser shop arrived.

 

[kba-pro]

Plug&play.....
brilliant benefit of Lego type joints design

 

[kba-pro]

Checking the accuracy of digital materialization. As it was expected everything fits brilliant.

 

[kba-pro]

Since everything is checked and fitted on the Jig, cutting work can start on........ and first in the row are all brackets

 

[rrrr1rob]

Awesome job. I wanted to do something similar to my 500EXC swingarm. I envisioned mounting one end of the jig on a linear rail so I could adjust the length and keep the movement perpendicular to the swingarm bolt and axle. I'll stay tuned to see how this works out.

 

[kba-pro]

Marking of the cutting lines.

 

[kba-pro]

Cutting, damn cumbersome, is at least twice as difficult as cutting with a Japanese swing arm. Walls are really thick and that was surprised, but this is understandable because it is casted.

 

[kba-pro]

Hand mill job:

 

[kba-pro]

And wualaaa .... this is what the cut space looks like.

 

[kba-pro]

.

 

[kba-pro]

Chain guide brackets fitted and attached

 

[kba-pro]

Joints surfaces are matched. Now is clear visible for how much swing will become shortened, and how idea of the Jig works.

 

[kba-pro]

Weld joints final fillenting

 

[Bigfatredpig]

Damn that’s some impressive work.

 

[kba-pro]

Damn that’s some impressive work.

Trying to do my best