Adjustable offset triple tree project

[ski_powder]

Hey guys,

I'm making a set of custom adjustable offset triple trees for my '10 s1000rr and thought that documenting the process would be interesting.

Details: 7075 aluminum
-8 to +4 offset
Titanium bolts
Adapter for ignition and clutch cable bracket
Mounting of spoiler fairing below the bottom triple like the OEM version

Last night I did some quick test cuts in 6*6 timber to make sure that all of the toolpaths were correct and to get a general idea of what they would look like. Started getting tired and didn't bother running the finishing cuts on the bottom triple tree, just roughed out the contour. Gonna start cutting aluminum tomorrow!

Cheers,
Sebastian

[ski_powder]

Made some progress today in cutting the top half of the top triple tree. Tomorrow I'm going to try and do the same for the bottom triple tree since it's already programmed. Going to start working on machining the soft jaws that will allow me to machine the bottom side of these items hopefully early this week.

Cheers,
Sebastian

[TWISM]

Wow, very nice. Looking forward to seeing the done deal.

[Wolielmo]

+1. I 'm on board too.
Will you be able to sell?

[ski_powder]

Made progress today by cutting the bottom triple tree. I'm going to try and machine the soft jaws tomorrow as the weather seems to have taken a turn for the worse up here.

Wolielmo: I don't see why not if there would be interest.

Cheers,
Sebastian

[ski_powder]

I got the soft jaw clamps designed,programmed & cut last night and I faced the underside of the top clamp to get it's final shape. Unfortunatelly I realized last night that I didn't have a ball nose cutter to finish the pockets on the underside. Ordered a new cutter so it will be here by the weekend.

Cheers,
Sebastian

[ski_powder]

I found a small ball nose endmill at home and it allowed me to finish the top triple tree. Having experimented with various toolpaths I settled on the scallop look by keeping the step over large enough to prevent the endmill from cleanly finishing the floor. I think that I will decrease the step over in half for the final product to produce more tooling marks that are closer together (prototype is from 6061 aluminum which is around 60% cheaper than 7075!) I also decreased the fillet size on the backside to see if a smaller fillet looked better.

What do you guys think? Does the CNC milled scallop look better, or should I clean the floor with a standard straight endmill and make it smooth for the final product?

I need to make a custom part for my buddies road bike so there will be no progress for 1-2 days.

Cheers,
Sebastian

[Rush66crp]

Originally Posted by ski_powder

I found a small ball nose endmill at home and it allowed me to finish the top triple tree. Having experimented with various toolpaths I settled on the scallop look by keeping the step over large enough to prevent the endmill from cleanly finishing the floor. I think that I will decrease the step over in half for the final product to produce more tooling marks that are closer together (prototype is from 6061 aluminum which is around 60% cheaper than 7075!) I also decreased the fillet size on the backside to see if a smaller fillet looked better.

What do you guys think? Does the CNC milled scallop look better, or should I clean the floor with a standard straight endmill and make it smooth for the final product?

I need to make a custom part for my buddies road bike so there will be no progress for 1-2 days.

Cheers,
Sebastian

I vote for making it smooth.

[Wolielmo]

I like it the way it is.
(prototype is from 6061 aluminum which is around 60% cheaper than 7075!)
We all hear about 7075 aluminum products and sellers that are proud to say they use it,
but is it that better?
Will your prototype broke or bent?

[Thugsfatboy]

Very nice work