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SOHC.co.uk Forums => Project Board => Topic started by: amx1992 on March 31, 2019, 08:22:27 PM

Title: CB400f custom top yoke
Post by: amx1992 on March 31, 2019, 08:22:27 PM
This is a top yoke i made for my cb400f cafe racer build. Made on a mill and lathe, probably took me about 8 hours.

I'm really that i was able to get the ignition switch, dash lights and speedometer on it, but i would like it to have sat a little lower.

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Title: Re: CB400f custom top yoke
Post by: Laverda Dave on March 31, 2019, 09:36:22 PM
That's a nice piece of work. Always good to see real craftsmanship 👍
Title: Re: CB400f custom top yoke
Post by: mattsz on April 01, 2019, 12:29:22 AM
This is a top yoke i made for my cb400f cafe racer build. Made on a mill and lathe, probably took me about 8 hours.

As I'm not a metal worker, I'm curious - what part of the fabrication of that nice-looking piece of work was done on a lathe?
Title: Re: CB400f custom top yoke
Post by: amx1992 on April 01, 2019, 06:50:54 PM

As I'm not a metal worker, I'm curious - what part of the fabrication of that nice-looking piece of work was done on a lathe?

The two holes for the stanchions and the stepped hole for the spindle were all bored in the lathe. Basically the whole part is spun around the centre of each hole.
Title: Re: CB400f custom top yoke
Post by: mattsz on April 01, 2019, 06:56:24 PM
Interesting, thanks!
Title: Re: CB400f custom top yoke
Post by: Trigger on April 01, 2019, 10:06:21 PM
Where's the pinch bolts for holding the stanchion securely?


On a slab yoke, usually countersunk at the front  ;)
Title: Re: CB400f custom top yoke
Post by: amx1992 on April 01, 2019, 10:33:43 PM
Where's the pinch bolts for holding the stanchion securely?

Theyre countersunk into the front, like Trigger says
Title: Re: CB400f custom top yoke
Post by: amx1992 on April 02, 2019, 06:27:54 PM
No offence here but isn't the metal kinda thick to bend inward enough to grip the stanchion securely, I get the groove cut into the metal so that it can compress but the amount of metal that has to be pulled inward makes me wonder. How longs the pinch bolt?

Fair enough. The bolts have about 30mm of thread engaged, and when i do them up off the bike, you can see the gap closing up, and that's without doing them that tightly
Title: Re: CB400f custom top yoke
Post by: Trigger on April 02, 2019, 10:04:35 PM
Well, so long as it works that's ok.

I guess that you have never built a slab yoke then Ken  ;) You will have to join the chopper club  :o ;D ;D ;D
Title: Re: CB400f custom top yoke
Post by: paul G on April 03, 2019, 08:03:37 AM
Sooner walk to London with a nail in my shoe than ride a chopper, thanks  ;D ;D ;D

 ;D ;D
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