Author Topic: CB400f custom top yoke  (Read 1431 times)

amx1992

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CB400f custom top yoke
« 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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Online Laverda Dave

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Re: CB400f custom top yoke
« Reply #1 on: March 31, 2019, 09:36:22 PM »
That's a nice piece of work. Always good to see real craftsmanship 👍
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline mattsz

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Re: CB400f custom top yoke
« Reply #2 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?

amx1992

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Re: CB400f custom top yoke
« Reply #3 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.

Offline mattsz

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Re: CB400f custom top yoke
« Reply #4 on: April 01, 2019, 06:56:24 PM »
Interesting, thanks!

Offline Trigger

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Re: CB400f custom top yoke
« Reply #5 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  ;)

amx1992

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Re: CB400f custom top yoke
« Reply #6 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

amx1992

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Re: CB400f custom top yoke
« Reply #7 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

Offline Trigger

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Re: CB400f custom top yoke
« Reply #8 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

Offline paul G

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Re: CB400f custom top yoke
« Reply #9 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

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