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1962 cb72 racer project

Want to keep a Restoration Log? Post it here! You can include photos. Suggested format: One Restoration per Thread; then keep adding your updates to the same thread...

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cmineo
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Posts: 126
Joined: Sat Oct 11, 2014 7:04 am
Location: lehigh valley pa

1962 cb72 racer project

Post by cmineo » Tue Sep 20, 2016 10:45 am

here is another of my madness ideas .... inspired by the original 1962 cb72 I saw on ebay this past week ... I fell in love with the bike so I started making my own to rip around on .....

I just started mocking up based on the actual dimensions of the racer .... it wont be an exact replica but will be heavily influenced by the original bike
Attachments
CBR72.jpg
CBR72.jpg (119.26 KiB) Viewed 315 times
CBR72a.jpg
CBR72a.jpg (121.46 KiB) Viewed 315 times
CBR72b.jpg
CBR72b.jpg (90.21 KiB) Viewed 315 times
s-l1600 2.jpg
s-l1600 2.jpg (152.73 KiB) Viewed 315 times

cmineo
honda305.com Member
Posts: 126
Joined: Sat Oct 11, 2014 7:04 am
Location: lehigh valley pa

Post by cmineo » Tue Sep 20, 2016 11:56 am

im considering this mod ..... yes or no ? im using a 305 motor I have as a spare for this build

https://bore-tech.com/product/358cc-big-bore-kit

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Tim Allman
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Joined: Tue Dec 02, 2014 9:25 am
Location: Guelph, Ontario, Canada

Post by Tim Allman » Tue Sep 20, 2016 2:23 pm

I suggest that you use a few more spokes. And that seat is going to hurt before the first corner. I look forward to seeing the progress!

jgger
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Joined: Wed Jun 15, 2016 3:36 pm
Location: Corona Ca

Post by jgger » Tue Sep 20, 2016 8:31 pm

^^^Good catch! Haha!

cmineo
honda305.com Member
Posts: 126
Joined: Sat Oct 11, 2014 7:04 am
Location: lehigh valley pa

Post by cmineo » Mon Sep 26, 2016 8:10 am

I was a busy little beaver .... im far from done and figuring out the challenges of this build so far .... but I loosely mounted in the power plant into the stock cb77 with almost no modification of the frame, I just had to trim off the upper two engine mounts for clearance of the DOHC .... the sprockets lined up and I had to flip the stock cb77 rear tire ...

I also need to fab up a upper rear engine mount even though the rest of the mounts lined up easily ...

im using a front black bomber rim so I can stop this beast .... we will see if this works. I need to fab up intake boots to level out the carbs as well ....

ignore the paper mock up on the gas tank ... im welding steel in over the winter
Attachments
cb72 racer1.jpg
cb72 racer1.jpg (355 KiB) Viewed 252 times
cb72 racer3.jpg
cb72 racer3.jpg (416.62 KiB) Viewed 252 times

cmineo
honda305.com Member
Posts: 126
Joined: Sat Oct 11, 2014 7:04 am
Location: lehigh valley pa

Post by cmineo » Tue Oct 04, 2016 11:53 am

after much research I knew I saw this type of racer before and I finally found the pic online

this is a cr77 305cc DOHC setup from 1962

I plan on keeping my style tank ( because I finally have it welded up in metal ) and I don't think my cb77 frame will easily fit this bread loaf style tank

.... ignore the loosely attached exhaust mounts, im welding up new mounts so it attaches to the lower frame mount and not the swingarm bolt haha ... I had to verify road clearance
Attachments
cr77.jpg
cr77.jpg (128.96 KiB) Viewed 220 times
cb72r 500e.jpg
cb72r 500e.jpg (308.77 KiB) Viewed 220 times

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