Author Topic: Anyone done a K model to Morris Mag rear brake conversion to disc?  (Read 956 times)

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Offline newday777

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I picked up some NOS Morris Mags after a few years of conversations with a couple of long time friends(last of 5 brothers) that had the Ross Seeley shop here in NH. The rear wheel is a disc w/caliper(Morris never did drum brake wheels) and NOS Tickle rear sets w/master cylinder. Thinking of putting them on my K6 project that is in the works.
I searched through a large number of posts using the search function and had a real hard time finding what I needed for any conversion posts(the search function use each individual word you put in the search....).
Has anyone on here have a link of has done it that I could pick your brain on it? I know I'll need to fab up stay for the caliper mount and I got a few axle spacers but no instructions. They've been sitting on shelves for probably 47 years since they had the shop and have long retired now and we are down to the last brother. He doesn't remember the fitment to set them up. The anticipation is building!  8)
Once I get this sorted I will offer up a second set.
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 newday777

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #1 on: April 18, 2022, 03:47:17 am »
I first met the Ross brothers back in 1975 when I bought my new K5 and would go in their shop and drool over the Seely kit for the 750. Fred used to come to the Honda shop and get parts from me. Later in the early 80s I'd stop in and visit when I was back in town from out west and in the past 8 years we got reacquainted at the local breakfast shop and did our bench racing there. They(actually down to the last brother) still have a collection of Nortons, BSAs, stock and Seeley framed, and a number of other Brit bikes. Always great to glean history from old racers and builders.
I'll be riding this stock low mile Norton this Wednesday to the local bike night. It runs sweet, I started it up for David on Friday when I picked up the Morris wheels.
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 Tintop

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #2 on: April 18, 2022, 04:55:04 am »
What a great find.  That NOS AP caliper is worth a few $'s, & can't read the master but looks like a Hearst-Airheart.  I would suspect that the only issue to fit is the spacing width of your existing swingarm. 
1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline newday777

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #3 on: April 18, 2022, 05:07:31 am »
What a great find.  That NOS AP caliper is worth a few $'s, & can't read the master but looks like a Hearst-Airheart.  I would suspect that the only issue to fit is the spacing width of your existing swingarm.
Lochead caliper and Pagehiln master.
I haven't had time to play with fitting them up yet as I'm in process of expanding my work room from 10'×11' to an extra 11'×26' to make it 11'×35' total. Then I need to make a work stand to have the bikes up high to work on them. Might make an old school tilting table.
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 Tim2005

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #4 on: April 18, 2022, 11:42:17 am »
The footrest plates, rearset assemblies and Pagehiln master cylinder are almost certainly for a Seeley Honda frame. It suggests that is what the wheels were destined for too

Offline newday777

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #5 on: April 18, 2022, 11:59:11 am »
The footrest plates, rearset assemblies and Pagehiln master cylinder are almost certainly for a Seeley Honda frame. It suggests that is what the wheels were destined for too
Yes very much so.
But the plates do fit a K model frame.
« Last Edit: April 18, 2022, 12:02:14 pm by newday777 »
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 seanbarney41

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #6 on: April 18, 2022, 12:13:32 pm »
I could show you pictures of my Shelby Dowd set up that came off a K4, should be very similar, but did not use rearsets and used Hurst Airheart components.  The caliper bracket will act as one of the wheel spacers on the brake side might need another spacer inside or outside caliper bracket, use stock spacers with the Morris sprocket carrier on that side, mc probably bolts to inside of rearset bracket?
If it works good, it looks good...

Offline Don R

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #7 on: April 18, 2022, 01:30:54 pm »
 Try searching "Morris mag"
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Offline scottly

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #8 on: April 18, 2022, 07:20:08 pm »
The footrest plates, rearset assemblies and Pagehiln master cylinder are almost certainly for a Seeley Honda frame. It suggests that is what the wheels were destined for too
Yes very much so.
But the plates do fit a K model frame.
Sorry Stu, but those plates will only bolt onto a Seeley frame. The Tickle rear-sets came with plates cut from 5/16" aluminum and clamps to attach to the stock Honda frame at the triangle. I wondered for years and years what those parts were for. ;D
My bike came with the same Morris wheel, and the same Circle Industries aluminum sprocket, but with a Gremeca caliper and MC. The Seeley frame was designed to accept the stock rear wheel and brake, and the Morris wheel was designed to fit the stock frame.   
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Offline newday777

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #9 on: April 18, 2022, 07:43:54 pm »
Ahha! Ok then good to know that. Thank you.
I did get one of those plates for the K and the clamps. Guess I'll have to fab up another and clamps for the other side and a master(I did get an extra master)
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 Tintop

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #10 on: April 19, 2022, 06:07:36 am »
Not sure which is a copy of which, but that Pagehiln master cylinder is exactly the same as the Hearst-Airheart's I ran on my dual engine kart. 
1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline newday777

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #11 on: April 19, 2022, 06:14:50 am »
Not sure which is a copy of which, but that Pagehiln master cylinder is exactly the same as the Hearst-Airheart's I ran on my dual engine kart.


The Pagehiln is from 1976-1979 stock from Seeley. My friend David Ross was the importer to the USA back then.
« Last Edit: June 19, 2022, 07:42:58 am by newday777 »
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 Tim2005

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #12 on: April 19, 2022, 11:06:01 am »
Not sure which is a copy of which, but that Pagehiln master cylinder is exactly the same as the Hearst-Airheart's I ran on my dual engine kart. 

Yes they certainly look the same, even down to the plastic bung in the filler hole- it's odd it was copied that closely. I don't know if they are the same bore though - any idea?

Offline newday777

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Re: Anyone done a K model to Morris Mag rear brake conversion to disc?
« Reply #13 on: April 19, 2022, 11:17:48 am »
Not sure which is a copy of which, but that Pagehiln master cylinder is exactly the same as the Hearst-Airheart's I ran on my dual engine kart. 

Yes they certainly look the same, even down to the plastic bung in the filler hole- it's odd it was copied that closely. I don't know if they are the same bore though - any idea?

I haven't opened them to check the bore yet.
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