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Author Topic: Top Tree Identification please  (Read 551 times)

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Online newday777

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Top Tree Identification please
« on: March 25, 2023, 11:26:17 AM »
Edit..Question is answered 😊

Hey guys
I have a NOS top tree I bought from a friend last fall, I was hoping it was for the CB750K but it's not. The 750 has a different offset from the center shaft angle to the fork tubes. There are a few differences in the shape below the stem nut contact surface and where the fork tube clamps come off the handlebar bungs.
Can anyone identify it? Do you have pictures of one on your bike to help identify it?
« Last Edit: March 25, 2023, 03:16:56 PM by newday777 »
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Kelly E

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Re: Top Tree Identification please
« Reply #1 on: March 25, 2023, 11:34:23 AM »
The new one looks a lot like the one on my 74' CB 550 K0.
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The Rust Bros. Garage Collection
1974 Honda CB 550 K0                                            1971 MGB/GT
1975 Honda CB 400F Super Sport                          1972 MGB/GT
1977 Kawasaki KZ 1000 LTD                                   1985 GMC S15
1978 Kawasaki KL 250
1980 Suzuki GS 1100E
1982 Honda CB 900F Super Sport
1983 Honda CB 1100F
1984 Honda VF 700S Sabre
1984 Honda VF 1000F Interceptor
1990 Moto Guzzi 1000 Le Mans
1994 Kawasaki Concours ZG 1000A9
2005 Harley Davidson Fat Boy

Online newday777

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Re: Top Tree Identification please
« Reply #2 on: March 25, 2023, 11:46:42 AM »
Quote from: Kelly E on March 25, 2023, 11:34:23 AM
The new one looks a lot like the one on my 74' CB 550 K0.

Pictures??
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Don R

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Re: Top Tree Identification please
« Reply #3 on: March 25, 2023, 02:09:10 PM »
 The fork to stem offset is 45mm on a 500/550, 50mm on a 750F which has a wide gauge mount pattern and close center bolts for the ign switch mount. The 750 K has a 60 mm offset.
 My 750 K1 had a cb500/550 triple tree with a longer welded stem apparently to influence the handling.
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Online newday777

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Re: Top Tree Identification please
« Reply #4 on: March 25, 2023, 02:13:48 PM »
Quote from: Don R on March 25, 2023, 02:09:10 PM
The fork to stem offset is 45mm on a 500/550, 50mm on a 750F which has a wide gauge mount pattern and close center bolts for the ign switch mount. The 750 K has a 60 mm offset.
 My 750 K1 had a cb500/550 triple tree with a longer welded stem apparently to influence the handling.
Not much help without a drawing
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Shtonecb500

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Re: Top Tree Identification please
« Reply #5 on: March 25, 2023, 02:45:22 PM »
its a 500/550 top triple - the pictures below are from a 74'550 and a 71'cb500.

I gave my buddy a top triple for his 500 but its actually a 750k top triple - wanna trade? here is a picture.
« Last Edit: March 25, 2023, 02:51:00 PM by Shtonecb500 »
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73/74'' CB500/550 resto-mod - sold
75' 750f 91' cbr f2 swap cafe - mock up
74' 750 chopper hardtail - complete - sold
74' CB750/836kit - Black mix & match - daily rider - always tweaking
71' cb500 K0 survivor - complete
71' K1 - CANDY GOLD/BROWN Winton kit - in process

Online newday777

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Re: Top Tree Identification please
« Reply #6 on: March 25, 2023, 03:10:59 PM »
I do believe it is the 500/550 top tree.
I already found a 750 tree so I don't need another.
« Last Edit: March 25, 2023, 03:15:19 PM by newday777 »
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A
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