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Author Topic: Gearchange rod  (Read 819 times)

Offline XS850

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Gearchange rod
« on: March 05, 2025, 11:02:14 AM »
Hi All, I’ve misplaced the gearchange adjusting rod so need to make a new one (originals -new - not available).
Can someone kindly give me the measurements please? Total length, thread diameter (6mm? LH & RH thread?) and rod diameter?
Many Thanks - Bruce
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Offline Sesman

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Re: Gearchange rod
« Reply #1 on: March 05, 2025, 06:22:43 PM »
For which motorcycle!?
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Offline Seabeowner

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Re: Gearchange rod
« Reply #2 on: March 05, 2025, 06:32:32 PM »
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Phil
1971  CB500K0  Candy Jade Green or Candy Gold
1973  CB500K1  Candy Ruby Red
1975  CB550F1   Shiny Orange
1978  CB550K     Excel Black

Offline XS850

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Re: Gearchange rod
« Reply #3 on: March 05, 2025, 06:50:51 PM »
Sorry - CB400F.

Seabeowner - yes, that one but nowhere available!

Cheers - Bruce
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Offline McCabe-Thiele (Ted)

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Re: Gearchange rod
« Reply #4 on: March 05, 2025, 07:11:18 PM »
I've sent you a PM.
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Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline McCabe-Thiele (Ted)

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Re: Gearchange rod
« Reply #5 on: March 05, 2025, 10:17:11 PM »
I have measured my old link rod with a set of calipers, I'm pretty sure it was the original one.

Total rod length is 61 mm, the shaft diameter is 7.8 mm.
Left hand M6 thread at the gearbox end - the threaded section is 15.0 mm long.
Right hand thread M6 pitch 1.0 at the shift pedal end - the threaded section is 15.0 mm long.
The main center unthreaded section is 26.0 mm with a taper at each end down to the thread that is about 2.5 mm at each end.

26+15+2.5+15+2.5=61

.PXL_20250305_220619739 by Macabe Thiele, on Flickr

« Last Edit: March 05, 2025, 10:20:56 PM by McCabe-Thiele (Ted) »
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Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline XS850

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Re: Gearchange rod
« Reply #6 on: March 05, 2025, 10:28:59 PM »
That’s brilliant Ted - many thanks, exactly what I need!

Cheers - Bruce
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