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BRITISH COLUMBIA CLASSIC MOTORCYCLE CLUB
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Author Topic: Seat hinge  (Read 1363 times)
Galactica
1000 Class
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Posts: 4648
« on: September 28, 2023, 12:46:17 PM »
Somehow I’ve managed to lose a seat hinge for my ‘75 CB750.  The seat pan was so rusted at the front hinge, that it fell off.  It’s gotta be here somewhere, but I’ve looked everywhere and can’t find it. A new aftermarket seat arrived today and I’d sure like to install it.  Would anyone happen to have one?

Thanks,
Ross
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Past rides:
75 Honda CB750K5
80 Suzuki TS250
 ? Yamaha Maxim 550
73 Z1 900
76 Kz900 A1
77 Kz1000 A1
78 Kz1000 B2 Ltd
79 Kz1000 B3 Ltd
80 Kz1000 C
99 Triumph Tiger 900
84 Honda VF750 Interceptor
77 Honda CB750


Current ride:
2019 Yamaha Tracer900

Current project:
1975 Honda CB750K5
Galactica
1000 Class
******
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Posts: 4648
« Reply #1 on: September 28, 2023, 02:35:38 PM »
Here’s how it looks.  All I need is a hinge.

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Past rides:
75 Honda CB750K5
80 Suzuki TS250
 ? Yamaha Maxim 550
73 Z1 900
76 Kz900 A1
77 Kz1000 A1
78 Kz1000 B2 Ltd
79 Kz1000 B3 Ltd
80 Kz1000 C
99 Triumph Tiger 900
84 Honda VF750 Interceptor
77 Honda CB750


Current ride:
2019 Yamaha Tracer900

Current project:
1975 Honda CB750K5
Hawkeye
1000 Class
******
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Posts: 1546


If you can't get one, make one.
« Reply #2 on: September 28, 2023, 08:35:13 PM »
Excellent photos, Ross. I'll see if I can make one up for you tomorrow.
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Mike
___________________________________

Past: '77 Honda 400 Four Super Sport
        '79 Honda 750K
        Honda CT70
        '78 XS400
        '81 Honda GL1100 (Collector Plate) (x2)
Present: '66 Honda CT200 Trail 90
             '77 Honda 750 Four K
             '83 Honda GL1100 (Collector Plate)
             '83 Honda 750 Shadow (Collector Plate)
Future: '77 Honda 400 Four Super Sport
Galactica
1000 Class
******
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Posts: 4648
« Reply #3 on: September 29, 2023, 07:04:45 AM »
Quote from: Hawkeye on September 28, 2023, 08:35:13 PM
Excellent photos, Ross. I'll see if I can make one up for you tomorrow.

Wow, that’s a great offer.  Bear in mind, the mm graduations on the scale actually start about a mm from the end of it.

Logged
Past rides:
75 Honda CB750K5
80 Suzuki TS250
 ? Yamaha Maxim 550
73 Z1 900
76 Kz900 A1
77 Kz1000 A1
78 Kz1000 B2 Ltd
79 Kz1000 B3 Ltd
80 Kz1000 C
99 Triumph Tiger 900
84 Honda VF750 Interceptor
77 Honda CB750


Current ride:
2019 Yamaha Tracer900

Current project:
1975 Honda CB750K5
Galactica
1000 Class
******
Offline Offline

Posts: 4648
« Reply #4 on: September 29, 2023, 08:01:25 AM »
Quote from: Hawkeye on September 28, 2023, 08:35:13 PM
Excellent photos, Ross. I'll see if I can make one up for you tomorrow.

Other Hondas may well use the same hinge.  If you have an older Honda, check the hinge.  You might be able to use one as a pattern.
Logged
Past rides:
75 Honda CB750K5
80 Suzuki TS250
 ? Yamaha Maxim 550
73 Z1 900
76 Kz900 A1
77 Kz1000 A1
78 Kz1000 B2 Ltd
79 Kz1000 B3 Ltd
80 Kz1000 C
99 Triumph Tiger 900
84 Honda VF750 Interceptor
77 Honda CB750


Current ride:
2019 Yamaha Tracer900

Current project:
1975 Honda CB750K5
Hawkeye
1000 Class
******
Offline Offline

Posts: 1546


If you can't get one, make one.
« Reply #5 on: September 29, 2023, 09:27:16 AM »
My older Hondas don't have hinged seats. The bore is 1/4" - loose fit for a 6mm pin. Centre of the bore is 25mm up. There's enough meat on it to grind off a bit if that's too high, or it can be shimmed if it's too low. I'll leave the painting up to you.

PM me your mailing address. I'll mail it today or tomorrow.
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Mike
___________________________________

Past: '77 Honda 400 Four Super Sport
        '79 Honda 750K
        Honda CT70
        '78 XS400
        '81 Honda GL1100 (Collector Plate) (x2)
Present: '66 Honda CT200 Trail 90
             '77 Honda 750 Four K
             '83 Honda GL1100 (Collector Plate)
             '83 Honda 750 Shadow (Collector Plate)
Future: '77 Honda 400 Four Super Sport
Galactica
1000 Class
******
Offline Offline

Posts: 4648
« Reply #6 on: September 29, 2023, 10:22:41 AM »
Quote from: Hawkeye on September 29, 2023, 09:27:16 AM
My older Hondas don't have hinged seats. The bore is 1/4" - loose fit for a 6mm pin. Centre of the bore is 25mm up. There's enough meat on it to grind off a bit if that's too high, or it can be shimmed if it's too low. I'll leave the painting up to you.

PM me your mailing address. I'll mail it today or tomorrow.

That’s pretty cool.  Thanks very much.
Logged
Past rides:
75 Honda CB750K5
80 Suzuki TS250
 ? Yamaha Maxim 550
73 Z1 900
76 Kz900 A1
77 Kz1000 A1
78 Kz1000 B2 Ltd
79 Kz1000 B3 Ltd
80 Kz1000 C
99 Triumph Tiger 900
84 Honda VF750 Interceptor
77 Honda CB750


Current ride:
2019 Yamaha Tracer900

Current project:
1975 Honda CB750K5
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