Honda CB750 Sandcast

General Category => "88 Model Distinctions" => Topic started by: bojje on March 28, 2018, 02:07:20 pm

Title: Swingarm
Post by: bojje on March 28, 2018, 02:07:20 pm

Hi!
It is very interesting with an early bike like #24/43. There are odd things with it all the time. Today when I was adjusting the drive chain I found Another thing. Look at the marks at the swingarm and you will find on this bike the signs/marks are punched in the swingarm instead of higher/relief as all other bikes I have (incl #180, #388, and higher VIN:s)
Looking forward to comments if anyone else has seen it Before. Perhaps Kerrys #28/132 has the same kind of marks.
Bo

Title: Re: Swingarm
Post by: 4pots1969 on March 28, 2018, 04:45:45 pm

Oh yes... :o :o there, the adjustment lines are drawn by digging the metal and after they made them in relief on the metal...  It's very interesting Bo  :) ;)

Title: Re: Swingarm
Post by: Steve Swan on March 28, 2018, 05:57:05 pm

Quote from: bojje on March 28, 2018, 02:07:20 pm

Hi!
It is very interesting with an early bike like #24/43. There are odd things with it all the time. Today when I was adjusting the drive chain I found Another thing. Look at the marks at the swingarm and you will find on this bike the signs/marks are punched in the swingarm instead of higher/relief as all other bikes I have (incl #180, #388, and higher VIN:s)
Looking forward to comments if anyone else has seen it Before. Perhaps Kerrys #28/132 has the same kind of marks.
Bo

Thank you Bo, for sharing a remarkable distinction!  Please keep them coming.  frame 232 has raised markings.  i wonder if the swing arms on these very early vins are same as late pre-production bikes.  perhaps Mark will see your thread and tell us what he finds on swing arm of his frame 97.

Title: Re: Swingarm
Post by: Sgt.Pinback on March 29, 2018, 01:29:52 am

Great stuff!

Title: Re: Swingarm
Post by: markb on March 29, 2018, 08:07:46 am

I don't recall seeing that. Seems like I would have noticed. I will try to remember to check this weekend.

Title: Re: Swingarm
Post by: 4pots1969 on March 29, 2018, 11:42:21 am

Mark :) I found photos in the restoration of your 97 and apparently yours is not like that...

Title: Re: Swingarm
Post by: markb on March 29, 2018, 06:29:23 pm

Thanks.  ;D

Title: Re: Swingarm
Post by: kp on March 29, 2018, 07:16:28 pm

Quote from: bojje on March 28, 2018, 02:07:20 pm

Looking forward to comments if anyone else has seen it Before. Perhaps Kerrys #28/132 has the same kind of marks.
Bo

Yes Bo Frame 28 has the same marks

Title: Re: Swingarm
Post by: 4pots1969 on March 30, 2018, 02:40:43 am

This is a very beautiful discovery of our friend Bo... :) ;)

Title: Re: Swingarm
Post by: nmbr12 on April 06, 2018, 08:52:48 pm

frame #18 /12 has the same seven distinctive lines...
                                                                                                                                                                                                           

Title: Re: Swingarm
Post by: bojje on April 08, 2018, 01:48:20 am

Hi!
Thank you for your answer about #18/12. I’ve seen the VIN in registry but since there is no mame I didn’t know it exists. Happy to hear you have one of the real old ones. Is it a bike for use or do you restore it? Would be nice to see a picture of it.
Would be interesting to hear at what VIN the ”relief” marks starts.
Best regards, Bo