|
Post by crazycunuc on May 3, 2017 0:32:18 GMT -5
I've decided it's time to start tackling the aluminium...1st up..the fork sliders. After all the guts from the 1st fork spilled out all over the floor I was much more careful with the 2nd to note how everything went together. Time to begin...I was a little hesitant on getting rid of the added HP boost from the racing stickers Life Savers!! These wheels work wonders on the parts to get in all the contours and power through the pitting. I used the 120 and 220 grit wheels. I now moved the part to the lathe (just to hold it and began to wet sand by hand starting at 240, 320, 400, 600, 800 and finally 1200 grit. I was hesitant to move to the 1200 as I wanted to leave the factory brushed aluminium look however I'm really happy with how it turned out I took a couple pictures from the various stages incase anyone was curious on the surface finish for their own stuff. 400 grit 600 grit And finally 1200 grit
|
|
|
Post by ballvo on May 3, 2017 7:16:32 GMT -5
Looking most excellent!
|
|
|
Post by zambia on May 3, 2017 8:05:18 GMT -5
Keep it coming Peter - I might need to send my "72 down there for a resto..
|
|
|
Post by Jim on May 3, 2017 8:22:23 GMT -5
I like the finish right after the wheel was used on them.
|
|
|
Post by crazycunuc on May 3, 2017 8:49:21 GMT -5
Keep it coming Peter - I might need to send my "72 down there for a resto.. For sure; it still runs right...
|
|
|
Post by crazycunuc on May 3, 2017 8:55:12 GMT -5
I like the finish right after the wheel was used on them. The finish looked a lot more course in person which is why i went finer but you're right. That raw aluminium look is quite nice Especially 1st seeing it after the initial wheel to remove all oxidization / pitting
|
|
|
Post by crazycunuc on May 9, 2017 21:03:34 GMT -5
I promise I won't post a million pictures of EVERY part but after spending over a week working on this ONE part I can't resist. I decided to challenge myself and polish the clutch cover completely by hand without buffing wheels. ...again..this is the by product from working in a metallurgy lab. We get wierd about polishing things 45 years of abuse and oxidization. Rough sand to remove the major gouges in the aluminium. 120 grit 220 grit 240 grit 320 grit 400 grit 600 grit 800 grit 1200 grit 9 micron diamond spray 45 micron diamond spray (I know it's backwards but with the different buffing pads I use it works best this way) 3 Micron Diamond Spray (There's still more work to get all the fine scratches out but you get the gist)
|
|
|
Post by Jim on May 9, 2017 21:37:00 GMT -5
I decided to challenge myself and polish the clutch cover completely by hand without buffing wheels. Wow. Next try a rebore with just 400 grit wet sandpaper and a bore gauge. The cover looks beautiful.
|
|
|
Post by crazycunuc on May 9, 2017 21:47:55 GMT -5
I decided to challenge myself and polish the clutch cover completely by hand without buffing wheels. Wow. Next try a rebore with just 400 grit wet sandpaper and a bore gauge. The cover looks beautiful. Thanks Jim! I'm guessing the rebore is to clean out all the bolt holes?
|
|
|
Post by Jim on May 9, 2017 22:52:44 GMT -5
No, try a cylinder rebore for the next oversize pistons, using only 400 paper. It's the next step after polishing the cover with no power tools.
|
|
|
Post by III on May 10, 2017 1:49:22 GMT -5
No, try a cylinder rebore for the next oversize pistons, using only 400 paper. It's the next step after polishing the cover with no power tools. That would be like eating an elephant Jim..... It takes time???
|
|
|
Post by shiloh on May 10, 2017 3:34:31 GMT -5
Ive done that using diamont lapping pads used for polishing granate. Hands and fingers nearly fell off... lol Tooo much work for these old hands now. Great job, cant wait to see the bike all done and smoking.
|
|
|
Post by crazycunuc on May 10, 2017 5:39:51 GMT -5
No, try a cylinder rebore for the next oversize pistons, using only 400 paper. It's the next step after polishing the cover with no power tools5. Haha after I replied it clicked what you were saying. I think i may pass on that job And to clarify the initial rough/120/220 grits were done with the sanding wheels used on my fork sliders. Everything else was by hand.
|
|
|
Post by crazycunuc on May 31, 2017 17:16:06 GMT -5
|
|
|
Post by ballvo on Jun 1, 2017 11:18:42 GMT -5
You're making some good progress.
Kinda get that deja vu feeling reading over this build thread.
N.
|
|