Kawasaki Z650 Seventies Special

Bevelheadmhr

Coast to Coast
DTT BOTM WINNER
Test fitted the new billet yokes to take the wider 43mm forks in the pic below, after which I decided to machine the underside top yoke so it sits over the adjuster nuts, as it'll look better and give an extra 10mm or so of ground clearance, at the expense of making adjustment trickier.

Still not got the head back, I suspect a lot of shops are using C19 as an excuse for poor service.

IMG_9670arrow.jpg
 

Coxbow

Active Member
I etch my stuff. Saline etching, with copper sulfate and salt, is super cheap, really easy and relatively low toxicity. I use vinyl as a resist most of the time.

really nice result ! could I have your formula, I do this with 2 acids and water, very toxic !
 

Jimbonaut

Over 1,000 Posts
DTT SUPPORTER
I'd like to learn more about your process too Irk. Never etched, but would like to try
 

Coxbow

Active Member
It's quite easy to explain, make a negative sticker of what you wan't to etch, dip the part in your solution, wait... ( it "eats" the metal approx 1mm per 30 minutes )

I did it with aluminium copper and brass, it work's with the same mixture, works best with aluminium.
 

irk miller

You've been mostly-dead all day.
DTT BOTM WINNER
I'd like to learn more about your process too Irk. Never etched, but would like to try
1:1 mixture of copper sulfate and salt. I use 500mL of water per 200 grams of salt/copper sulfate mixture. You can adjust your mixture per need. I sometimes go stronger. Dissolve in hot water. If you etch on a warm hot plate, it can shorten etch time. As the aluminum etches, the surface will collect oxide that inhibits the etch, so I take a soft bristle brush and brush off the surface every 20-30 seconds. The oil tank cap is a 10 minute etch.
 

Coxbow

Active Member
10 minute etch ! That's about 3 times faster than my corrosive mixture ! I'll try it out, thanks
 

Bevelheadmhr

Coast to Coast
DTT BOTM WINNER
The top yoke has been modded to drop it over the adjuster nuts, while work has started on making the adaptor plates to mount the R6 discs to my old billet front wheel. The R6 forks are now ready to go on the bike, though I will be painting the fork lowers black. With the bike being at my mates workshop, it might be awhile before I can go and check up on progress, since we ae in lockdown again.
 

Attachments

Bevelheadmhr

Coast to Coast
DTT BOTM WINNER
The front end is now almost complete, just need to pretty up the disc adaptor plates by machining them to match the discs, and paint the fork lowers black, and maybe also paint the spokes too..
IMG_9699Anot.jpg
IMG_9701 (2).JPG
 

DTT Bike Of The Month Gallery

DTT Light or Dark

www.jadusmotorcycleparts.com
shop.themotoworks.com
www.cognitomoto.com
https://www.townmoto.com
www.speedmotoco.com
www.lostapostle.ca/
www.sparckmoto.com
Top Bottom