honda305 Home honda305 Auctions honda305 Gallery honda305 Forum


honda305.com Forum

Login
□ Search
□ FAQ 
□ 
Vintage Honda Owners,
Restorers, Riders and
Admirers

Building a Custom Gearset

Clutch, Transmission, Drive Chain, Sprockets
Post Reply
denisj
honda305.com Member
Posts: 3
Joined: Fri Oct 06, 2017 9:51 pm
Location: Sacramento, CA

Building a Custom Gearset

Post by denisj » Fri Oct 06, 2017 10:07 pm

Hi Guys!

I am the proud new owner of a CL77 with a bum low gear and low compression

Aside from top end work and the conversion to a 360 degree crankshaft I am looking to swap some gears from the other 305 machines to make mine just right.

The Goal:
To have a good granny 1st gear and a tall 2-3-4 that will get me higher speeds than stock with a taller final sprocket arrangement.

I have been looking at the parts books and notice there is a much shorter 1st gear in the Dream...I assume this is true because I vaguely remember the Dream having a big jump from 1st to 2nd in RPM

I am assuming the following:

I can install the 1st gear and counter shaft gear from a Dream into the transmission of my CL77 for a really deep/slow speed operation, AKA Granny gear 1st - Is this correct?

Performing the X-swap of 2nd and 3rd gears seems like it would defeat the purpose of separating 1st from the group - is that right?

Is there a gear ratio/ gear teeth chart or specifications I can pull from for information?

If I am way off base then please let me know. I have had a half dozen of these 250/305's apart for all sorts of repairs and would assume the pieces will fit without issue.

Thank you for your input!!

User avatar
G-Man
honda305.com Member
Posts: 5678
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
Contact:

Post by G-Man » Mon Oct 09, 2017 8:33 am

X-in the greats won't help.

You can check the tooth numbers in the respective parts manuals.

I posted a chart a couple of years back.

Just get hold of a set of Dream gears and see what works.

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

Post Reply




 

CB-77 | CYP-77 | Road Test | Riding Log | Literature | Zen | Marketplace | VJ Survey | Links | Home