1968 CB77 Upgrade

[flyin_]

Here is a video of the superhawk transmission in motion. Its pretty fun to be able to split the cases and see everything in motion.

http://www.flickr.com/photos/71636845@N03/6475072573/

Does anyone know how to embed video?

[flyin_]

Nice bike, welcome the forum, lots of good info here. Your forks and seat mean it is earlier than 68. Good score!! Having the center stand drop down around a curve, must have gotten your full attention, ha?

So what year do the seat and forks appear to be? The bike has engine number CB77E-1028604 and frame number CB77 1028648. I was unsure how to identify the forks based on the bill silvers descriptions. Maybe they are not original? I guess the bike should be a 67. Its titled as a 68.

[G-Man]

The forks changed to an aluminium slider and the seat acquired a 'lip' at the front next to the tank around '67, I think. These details were the same for all bike pre that date.

Although your forks lowers are painted silver they would normally be black in your case. Aluminum ones are always silver...

G

[flyin_]

I started to sort out my replacement transmission last night. It turns out the ebay transmission I got has the 2nd and 3rd gears crossed already. Over all it appears to be in good usable condition. My main question is wear on the main shaft where the clutch seats on the shaft.

It looks like there is excessive wear at the splines. Here is a photo of the replacement main shaft splines and this is pretty much the same condition as my original main shaft. Can someone tell me if this is going to be usable?


P1060766 by flyin_, on Flickr

[LOUD MOUSE]

It is machined and issued that way. ..........lm

I started to sort out my replacement transmission last night. It turns out the ebay transmission I got has the 2nd and 3rd gears crossed already. Over all it appears to be in good usable condition. My main question is wear on the main shaft where the clutch seats on the shaft.

It looks like there is excessive wear at the splines. Here is a photo of the replacement main shaft splines and this is pretty much the same condition as my original main shaft. Can someone tell me if this is going to be usable?


P1060766 by flyin_, on Flickr

[flyin_]

Thanks for the response LM!

So I will be buttoning up the bottom cases soon. Does anyone have any advice on how they prep the top and bottom cases and remove the old hondabond/gasket? I'm worried about scratching the mating surfaces or dropping some old material into the top end (I'm doing a bottom end rebuild only).

Thanks!

[Snakeoil]

Clean rags placed properly will let you shield the top end from stuff falling. But you might be better off using something like lacquer thinner or carb cleaner to remove the Hondabond. Paint stripper also works well on gaskets, you just have to be careful and patient. I think a rag and lacquer thinner is probably the easiest.

regards,
Rob