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Author Topic: Ross’ 1975 CB750  (Read 46845 times)
Galactica
1000 Class
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Posts: 4637
« Reply #105 on: November 09, 2023, 08:19:19 PM »
Thanks for that Dave.

But back to my front brake.  Now, I’ve ordered a master cylinder rebuild kit.  Scheduled to arrive next Thursday.  It’s really just a shot in the dark.  There’s probably nothing wrong with the old one.  I think I’m just rubbish at brakes.
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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
magpie
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Posts: 629
« Reply #106 on: November 10, 2023, 12:14:02 AM »
The SOHC engines are generally noisy I find, at least with mine. A carb sync does help. There is a damper for the primary chains but nothing in the clutch basket like the DOHC's.
If you pull the pan you can measure the deflection of the chains to see if they are still in spec. This is described in the workshop manual. Cliff.
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I
Galactica
1000 Class
******
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Posts: 4637
« Reply #107 on: November 10, 2023, 09:31:48 AM »

If you pull the pan you can measure the deflection of the chains to see if they are still in spec. This is described in the workshop manual. Cliff.
[/quote]

Whoa.  I’m not planning on getting into major mechanical stuff just yet, unless it’s absolutely necessary.  From the little I’ve read, it’s not seriously as yet.  Dang, I don’t even have a manual.  ☹️
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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: 4637
« Reply #108 on: November 11, 2023, 04:29:40 PM »
Man, what a storm last night.  We’ve been in our house over 20 years.  Never had the power out as long, 5 hours.

Today, I opened up the doors and did a vacuum sync.  My bench sync was so close, it really wasn’t worth the effort.  I’ve never really been good at setting air mixture screws.  But once again the bench setting seemed pretty good.  One turn out from seated.  

Now, if only I could get the front brake sorted.  ☹️☹️

Really looking forward to getting her out and put her through her paces.
« Last Edit: November 11, 2023, 04:42:38 PM by Galactica » 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
******
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Posts: 4637
« Reply #109 on: November 11, 2023, 05:04:34 PM »
Up to +- $4522. 
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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: 4637
« Reply #110 on: November 11, 2023, 05:39:10 PM »
The Delkevic exhaust sounds really good in the shop, but is fairly loud.
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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
hardrockminer
BCCMC Star (5K)
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Posts: 5626
« Reply #111 on: November 12, 2023, 05:21:17 AM »
It adds up fast doesn't it?  Chain, sprockets, tires, brake parts, battery, maybe a new seat....
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Past rides include a 1973 Suzuki GT380 & a 1975 Kawasaki Z1B

I currently ride a 1975 Kawasaki Z1B - Classic Plated
I also ride a 1980 Kawasaki KZ 1000 LTD - Classic Plated, and a 2006 Honda Goldwing with a Daytona 2+2 sidecar

My Sweetums rides a 2019 Suzuki DR650
Galactica
1000 Class
******
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Posts: 4637
« Reply #112 on: November 12, 2023, 08:44:25 AM »
Ha, I didn’t even get new chain & sprockets!
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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
Steve G.
1000 Class
******
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Posts: 4644
« Reply #113 on: November 13, 2023, 10:42:32 PM »

 
  There’s some great stuff for your bike available from this place !!!

   https://www.charlies-place.com/
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Garage Residents:
'74 Honda CT70
'74 Norton 850 Interstate
'81 Laverda Jota Mk11 180
'89 Honda RC30
'91 BMW R100GS
'08 Honda XR650L
'08 BMW R1200GS

Previous Garage Residents
 1966 Keystone Tas 50
 1981 Can-Am 250 MX6
 1966 BSA 250 Starfire
 1972 Triumph 650 hardtail chopper
 1976 Honda 400-4 Supersport
 1982 Can-Am 500 Sonic
 1982 Suzuki SP500
 1984 Kawasaki KZ 750 L4
 1979 Honda CBX
 1988 Ducati 750 Paso 750 Euro
 1972 Suzuki 750 GT ‘Kettle’
 1972 Kawasaki 750 H2
 1993 BMW R100GSPD
 1984 Honda CR500
 1979 Honda CBX sandcast
 1975 Honda 400-4 SS
 2001 Moto Guzzi V11 Sport
 2006 Yamaha FJR 1300
1972 Norton Combat Roadster 810
 1972 BMW R75/2 SWB
 1980 Honda CBX
 1970 Honda Trail 50 K1
Galactica
1000 Class
******
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Posts: 4637
« Reply #114 on: November 16, 2023, 10:00:42 PM »
AAAGGHH!!!  I’m rubbish at brakes. 

So I got the brake light pressure switch and master cylinder kit today.  Installed them.  Put some fluid in the reservoir.  Pumped the lever a few times.  Some bubbles came up.  Then nothing….  No fluid at all is going into the system.  WTF!?
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
Steve G.
1000 Class
******
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Posts: 4644
« Reply #115 on: November 16, 2023, 10:04:12 PM »
   Often it take an overnight sit to allow the air to contain in one spot for easier displacement. often tapping the master cylinder and rolling it around to release air out of corners,,,,,yes its frustrating. 
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Garage Residents:
'74 Honda CT70
'74 Norton 850 Interstate
'81 Laverda Jota Mk11 180
'89 Honda RC30
'91 BMW R100GS
'08 Honda XR650L
'08 BMW R1200GS

Previous Garage Residents
 1966 Keystone Tas 50
 1981 Can-Am 250 MX6
 1966 BSA 250 Starfire
 1972 Triumph 650 hardtail chopper
 1976 Honda 400-4 Supersport
 1982 Can-Am 500 Sonic
 1982 Suzuki SP500
 1984 Kawasaki KZ 750 L4
 1979 Honda CBX
 1988 Ducati 750 Paso 750 Euro
 1972 Suzuki 750 GT ‘Kettle’
 1972 Kawasaki 750 H2
 1993 BMW R100GSPD
 1984 Honda CR500
 1979 Honda CBX sandcast
 1975 Honda 400-4 SS
 2001 Moto Guzzi V11 Sport
 2006 Yamaha FJR 1300
1972 Norton Combat Roadster 810
 1972 BMW R75/2 SWB
 1980 Honda CBX
 1970 Honda Trail 50 K1
rz5mark
1000 Class
******
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Posts: 1849
« Reply #116 on: November 16, 2023, 10:16:17 PM »
I've been known to crack the bleeder, fill the reservoir and walk away for a time.
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hardrockminer
BCCMC Star (5K)
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Posts: 5626
« Reply #117 on: November 17, 2023, 05:31:50 AM »
I finally bought a mityvac.  They work.
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Past rides include a 1973 Suzuki GT380 & a 1975 Kawasaki Z1B

I currently ride a 1975 Kawasaki Z1B - Classic Plated
I also ride a 1980 Kawasaki KZ 1000 LTD - Classic Plated, and a 2006 Honda Goldwing with a Daytona 2+2 sidecar

My Sweetums rides a 2019 Suzuki DR650
Runningdog
1000 Class
******
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Posts: 4931


In Dog Beers I've only had one.
« Reply #118 on: November 17, 2023, 07:40:16 AM »
Quote from: hardrockminer on November 17, 2023, 05:31:50 AM
I finally bought a mityvac.  They work.

+1 on the Mityvac.
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Past:  '82 Suzuki GS400E; '82 Suzuki GS750E; '81 Yamaha Virago 750; '82 Suzuki GS650GL; '77 Yamaha DT250; '80 GS 850; '86 Kawasaki ZG1000; '78 XS400; 1971 Motobecane Mobylette; 1980 Yamaha SR250; various parts/project bikes, 2004 ZRX 1200; 1977 CB750K; '73 Triumph TR5T (Vintage Plate) .
Present: ; '75 Honda XL250 (Collector Plate);  '04 Wee-Strom;  1973 Honda CB350 6-million Dollar Project;   1979 GS750E
Galactica
1000 Class
******
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Posts: 4637
« Reply #119 on: November 17, 2023, 08:49:52 AM »
Quote from: rz5mark on November 16, 2023, 10:16:17 PM
I've been known to crack the bleeder, fill the reservoir and walk away for a time.

Yup.  Did that overnight.  No joy.
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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