Author Topic: Restoration: 1968 CB77 aka Superhawk : pics as of 12/27/2021  (Read 9322 times)

0 Members and 1 Guest are viewing this topic.

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Restoration: 1968 CB77 aka Superhawk : pics as of 12/27/2021
« on: December 19, 2020, 08:40:53 AM »
Moderator SteveD says its all right to post on a non SOHC4, so here goes:
Not a RestoMod. As close to original as budget will allow.

I bot this bike in 1998 from a lady who was running a General Store in Berlin, KY. I was on a 3 day camping outing with my wife, and 2 other riders. I was riding my 1988 Honda Hawk GT, the one with the interesting if not anemic V Twin 650cc Shadow engine, and the twin spar aluminum frame and single sided swingarm. Linda had a Kaw ZL600. A cruiser with shaft drive, dual baloney cut mufflers, and a detuned Ninja 600cc engine. Still it put out about 70hp and could stomp on any of us. She would have preferred a sportier layout, but the cruiser style was low enough she didn't have to tippy toe at stops.

Anyway, we were enjoying the ridge roads of northern KY when we pulled in to the General Store for some R&R. Got to talking to the proprietor, a lady in her 70s. She said she had a motorcycle. We said we wanted to see it. She took us into the Liquor Store portion of the store. Back then KY was stingy with Alcohol permits, and she had the one for her area (county?). It was a small lockable closet of a store. And parked in there was this all white, 305cc Super Hawk, all original. with a 1974 plate on it. A true "barn find". I offered her $500 for it and she agreed. She got the title and signed it over to me, I picked it up with my trailer the next weekend.

Her husband had bought it new, put about 4,000 miles on it, then died, unrelated to the motorcycle. She parked it in the liquor store in 1974 and there it sat. For 28 years! When I got it home, I went over it and found that time was not kind. The double leading shoe brakes, front and rear, had corroded to where they were inoperable. The number of pivot points on the brake linkage is about 6 and they were all locked up. Inside the drums, the brake shoes were disintegrating, and more stuff like that. I fixed all of those issues and got it started.  I began riding it around and got the kinds of remarks you couls expect from those in the know of what it is. Honda's first stab at a high performance street legal motorcycle. It can do a true 100mph, won fuel economy records at 100mpg, and was the bed for all kinds of racers. Its sister bike the CL77 Scrambler won the Baja 1000 in stock trim. But even at all that the other sister CA77 Dream was the more popular of the 3, but I hated it. Single carb, 360 degree crank, valanced fenders, funky ass front end, etc.

The CB77 is a dual carb, dual points, 180 degree crank, ..this article tells the differences better than I can:
https://enacademic.com/dic.nsf/enwiki/3124580

I rode this bike about 2000 miles, took it on overnight "tours" with sport bags, bedroll, tank bag, windshield. I've got a real nice pic of me, the Superhawk, Linda and the ZL packed for a trip.

But it came to pass that I couldn't get the cam chain to hold its tension. I'd adjust it and with in miles it was noisy again. Finally I pulled the cam chain tensioner off (its very much like the CB750s, or the 750s is like the Superhawk's). and found that the wheel on the end of the arm had seized (another victim of father time) and the chain had cut it down to nothing as it wouldn't turn. That put an end to riding it, and it was parked, till now.

It is 98% original. But I won't be able to get it running without replacing some parts. The exhausts are full of holes, the chainguard needs repair (they all did). I had to replace the handlebars s I took a little spill on it, and some of the original cabling was replaced. Original paint is not going to happen. It is speckled all over with rust, frame,, gas tank fenders, all painted surfaces. I've about settled on using white powder coating all over. The rims are speckled all over with rust, etc. But, my goal is to keep it as stock as possible. So it will actually be rideable and worth something too.

Here's where we are:












I've sourced some new rims, but I'm still trying to see if someone won't rechrome the original ones.
More later.

« Last Edit: January 05, 2022, 08:09:33 AM by MCRider »
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,399
  • Central Texas
Re: Restoration of a 1968 CB77 aka Super Hawk As of 12/18/20
« Reply #1 on: December 19, 2020, 09:14:21 AM »
Hey Ron...what a great story, I’ll be following this. 



I have a renewed interest in these ‘60’s era Honda’s.
Going to check out a ‘67 450 for sale next week.



« Last Edit: December 20, 2020, 05:41:10 AM by Stev-o »
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Tintop

  • Old Timer
  • ******
  • Posts: 3,965
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 12/18/20
« Reply #2 on: December 20, 2020, 05:28:58 AM »
Following along Ron, looks like a fun project.
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 HondaMan

  • Someone took this pic of me before I became a
  • Really Old Timer ...
  • *******
  • Posts: 13,924
  • ...not my choice, I was nicknamed...
    • Getting 'em Back on the Road
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 12/18/20
« Reply #3 on: December 21, 2020, 06:10:41 PM »
Boy, does that bring back the memories! My first "big" bike was a 1968 SuperHawk (there are only about 1100 of the 'genuine 1968' versions out there, identified by the hump on the front of the seat, at the tank). The '68 has the large intake valves, netting it 100 MPH (mine would only do 98 with me sitting up) where most were 89-92 MPH best. The rest of the bike is pretty much standard Hawk fare, so most of the Hawk arts will fit. Mine got 68 MPG at 65 MPH in the Midwest where I used to tour: around Illinois and Missouri in those days. GREAT handling. I bored mine to 337cc, 10.25:1 Rocky pistons, then it would do a little over 100, but the needle wobbled a lot about 95 so I couldn't tell for sure(?). It sure changed the bottom end when I did that, and strained the starter to where it went from 'barely' starting to [not], kickstart mostly. After the 337cc mod, it would not electric start cold, only hot (which took just a touch of the starter).

Mine had the "Western" handlebars, about 1.5" rise, instead of the more common flat ones. Later I had clipons on it when I raced it. If you replace the long adjuster shaft of the shifter linkage you can lay flat down on the tank, but the rear brake becomes an accessory for lack of a pedal to still reach it! Those double front shoes, though, are like throwing out an anchor for a stop, mine were great.
« Last Edit: June 11, 2021, 07:35:51 PM by HondaMan »
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 12/18/20
« Reply #4 on: January 05, 2021, 10:33:49 AM »
Thanks Stev-o, TinTop, and HMan. I learned how to ride on a CB77 when I was 15. On my cousins dairy farm, he let me ride his over the dairy farm on the cowtrails. Large flat rolling fields. 1st, 2nd, and sometimes 3 gear. Real fun.

And so we continue. The bearings in the rear wheel were crunchy and so we removed them for new ones. Used a bearing puller set, I had forgotten I had bought it. CBJoe reminded me and there it was on a shelf. Used his too. It took pieces from both to get them out. And a torch, but once approached they gave little resistance.


We disassembled the brake linkages by grinding the rivet pins off and driving them out. I got replacement rivets from a local 305 guru who had made some extras from a project he did. The linkages will get fresh chrome.


The swingarm is a unique piece in my experience.

« Last Edit: January 05, 2021, 10:38:27 AM by MCRider »
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,399
  • Central Texas
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/03/21
« Reply #5 on: January 05, 2021, 04:08:18 PM »
Hey Ron...what a great story, I’ll be following this.

 I have a renewed interest in these ‘60’s era Honda’s.

--Edit--

BOUGHT Going to check out a ‘67 CB450 last week!

'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/03/21
« Reply #6 on: January 17, 2021, 10:35:57 AM »
That's a classic Steve-o. Often referred to as a black bomber, 4 speed, toaster tank, etc.

Have fun!
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/03/21
« Reply #7 on: January 17, 2021, 10:54:00 AM »
The build continues. The forks came apart with a little torching around the seal area. Not much and they popped apart. Just like a 750. Or better said the CB750 (pre-K2) is just like the Super Hawk.


We continued on with the disassembly of the brake linkage. Much of it had seized from sitting. Had to Grind, file, drill, and punch out the old rivets so I can have the pieces rechromed.






And we disassembled the tail light to get the bracket powder coated as well.

Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/17/2021
« Reply #8 on: January 17, 2021, 11:41:29 AM »
I think I have 160 DLS arm and linkage , original good chrome.. not sure if they are the same .
Here is some local Inspiration. .
« Last Edit: January 17, 2021, 11:43:17 AM by 754 »
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Old Scrambler

  • My CB750K3 has been in 39 States & 5 Provinces
  • Old Timer
  • ******
  • Posts: 3,811
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/17/2021
« Reply #9 on: January 18, 2021, 10:50:07 AM »
Glad you persisted with success on the forks ;).......taillight bracket is silver no matter what color the bike........I have a nice swingarm in red and an NOS top-triple along with used shifter and brake linkage, a speedo and a few other pieces if your interested.........I assembled a white CB77 for a friend in 2018 and have a few parts including a complete motor.

I bought a new CB450 in May of 1967...........completely modified it in early '69 with alloy fenders, custom seat, glass-tank, upswept megas, and new-style clocks sourced from Japan (via friend in Navy)......traded in August for sandcast CB750.
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2020 ROYAL ENFIELD Himalayan

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/17/2021
« Reply #10 on: January 18, 2021, 11:27:45 AM »
Glad you persisted with success on the forks ;).......taillight bracket is silver no matter what color the bike........I have a nice swingarm in red and an NOS top-triple along with used shifter and brake linkage, a speedo and a few other pieces if your interested.........I assembled a white CB77 for a friend in 2018 and have a few parts including a complete motor.

I bought a new CB450 in May of 1967...........completely modified it in early '69 with alloy fenders, custom seat, glass-tank, upswept megas, and new-style clocks sourced from Japan (via friend in Navy)......traded in August for sandcast CB750.

Silver? Paint or chrome?

I'll keep your parts in mind. Thanks!
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/17/2021
« Reply #11 on: January 18, 2021, 11:28:09 AM »
I think I have 160 DLS arm and linkage , original good chrome.. not sure if they are the same .
Here is some local Inspiration. .

Very nice!
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/17/2021
« Reply #12 on: January 24, 2021, 06:23:43 AM »
Here's the fork tube bottoms: (Identical to the early CB750 forks, except the size)


Further disassembling of brake linkage: (boy its gonna be a #$%* to get these back together. But the chrome was just to bad to use and the joints were locked up):




More after this morning's Shop Time!

« Last Edit: January 24, 2021, 06:26:48 AM by MCRider »
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Tintop

  • Old Timer
  • ******
  • Posts: 3,965
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/24/2021
« Reply #13 on: January 24, 2021, 12:51:22 PM »
Have you sourced rivets to replace the 1's you've drilled out Ron?  Just the kind of small thing to become a 'got cha' at assembly time, having been there done that.
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 MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/24/2021
« Reply #14 on: January 24, 2021, 02:07:27 PM »
Have you sourced rivets to replace the 1's you've drilled out Ron?  Just the kind of small thing to become a 'got cha' at assembly time, having been there done that.

Aha! There is a CB77 guru by the name of Ellis "Buddy" Holman lives in Carmel, a distant suburb of Indianapolis. He did the same thing 20+ years ago, and made the replacement rivets on his mini-lathe. They are a special shape. I called him and asked if he could make more.  Price being no object.   ;)   He said he had 6 more left over, just the number I'll need.  He sent them to me FOC! (free of charge)  Motorcycle people are the best.   :)
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/24/2021
« Reply #15 on: January 25, 2021, 09:15:44 AM »
We broke down the rear shocks. They were not cooperating at first. But after turning the spring tension down to the lowest level, the covers could be pulled down to get the clips out.  I'll get the covers powder coated the same as the rest. I've got a pair of chrome RedWings w/ chrome springs for actual use. But I figured for resale the OEM shocks may have some value. 




CBJoe used his recently purchased Honda pin wrench to remove the seal covers off his CB77 forks:


We futzed around, sizing up the chainguard situation. I have two, the original and one from a parts bike. Both have the notorious break in the rear mounting tang. All CB77s broke their chainguards sooner or later.  They have been repaired but the welds are bird doo doo. I think I'll pop for a new one on eBay. Since I won't be riding it, no fear of the chainguard breaking. Let the next owner get that privilege.


We've about disassembled it completely. Gotta get the swingarm bushings out and source some new ones.
« Last Edit: January 25, 2021, 09:25:40 AM by MCRider »
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Magpie

  • Old Timer
  • ******
  • Posts: 3,314
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #16 on: January 25, 2021, 10:10:54 AM »
Following!
I have a 1964 CB77 that's apart and at my painter's now. It's had a rough life but hopefully will look good when I'm done.


I've recently finished a 1967 Street Scrambler.

The CB77 was my first bike in 1966 and the CL77 my second bike in 1967. Not these particular bikes though but the same models.
Cliff.
« Last Edit: January 25, 2021, 10:13:15 AM by Magpie »

Offline Old Scrambler

  • My CB750K3 has been in 39 States & 5 Provinces
  • Old Timer
  • ******
  • Posts: 3,811
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #17 on: February 10, 2021, 01:25:12 PM »
Cloud Silver paint on the taillight..........ebay chainguard looks good but is paper-thin ;)
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2020 ROYAL ENFIELD Himalayan

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #18 on: February 10, 2021, 02:16:58 PM »
Cloud Silver paint on the taillight..........ebay chainguard looks good but is paper-thin ;)

You talking to me?  I thought I'd do the taillight in the same white as the rest of the bike. Is cloud silver more authentic?

I got the chainguard but haven't opened the box yet.  :(
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Old Scrambler

  • My CB750K3 has been in 39 States & 5 Provinces
  • Old Timer
  • ******
  • Posts: 3,811
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #19 on: February 10, 2021, 04:38:48 PM »
All OEM tail light units were painted BLACK on the CB72 and CB77 models shipped to the US............but only a few anal individuals know this ;)
« Last Edit: March 30, 2021, 02:47:01 PM by Old Scrambler »
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2020 ROYAL ENFIELD Himalayan

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #20 on: February 11, 2021, 05:09:22 AM »
All OEM units were painted silver on the CB72 and CB77 models shipped to the US............but only a few anal individuals know this ;)

Interesting.  :)
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MauiK3

  • A K3 is saved
  • Old Timer
  • ******
  • Posts: 4,331
  • Old guy
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #21 on: February 11, 2021, 08:05:52 AM »
Dumb question
What was wrong with the chain guard that made them prone to breaking?
Cool project
1973 CB 750 K3
10/72 build Z1 Kawasaki

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #22 on: February 11, 2021, 12:09:46 PM »
Dumb question
What was wrong with the chain guard that made them prone to breaking?
Cool project

It was mounted with 2 points near the front, on either side of the chain, and one in the rear, outboard of the chain.  The rear was hanging out there on a single thin metal tab.  High frequency vibration would sever the tab just above the mounting bolt hole. It could then wag side to side and further deteriorate.  The fix is to weld the tabs back together, but its thin metal. I have one that is that way.  Another way to fix it was to lay a piece of flat steel on the inside to splice the tab back together and then weld it. Then drill a hole in the scab and run the rear bolt through the chainguard tab and the scab.  This works but is difficult to make it look clean. I have one like that, too.  The fixes would often break again.
« Last Edit: February 11, 2021, 12:11:34 PM by MCRider »
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline Old Scrambler

  • My CB750K3 has been in 39 States & 5 Provinces
  • Old Timer
  • ******
  • Posts: 3,811
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #23 on: February 11, 2021, 06:02:39 PM »
I have sometimes glued a thin layer of nylon on the backside of a welded tab.........then paint.......and add a nylon or rubber washer between the bolt-head and guard.
Dennis in Wisconsin
'64 Triumph Cub & '74 Honda CB750 Bonneville Salt Flats AMA Record Holder (6)
CB750 Classic Bonneville Racer thread - http://forums.sohc4.net/index.php/topic,135473.0.html
'63 CL72 Project(s)
'66 CL77 Red
'67 Triumph T100C
'73 750K3 Owned since New
'77 750F2 Cafe Project
2020 ROYAL ENFIELD Himalayan

Offline MCRider

  • Such is the life of a
  • Really Old Timer ...
  • *******
  • Posts: 14,376
  • Today's Lesson: One good turn deserves another.
Re: Restoration: 1968 CB77 aka Superhawk : pics as of 01/25/2021
« Reply #24 on: February 12, 2021, 04:34:23 AM »
I have sometimes glued a thin layer of nylon on the backside of a welded tab.........then paint.......and add a nylon or rubber washer between the bolt-head and guard.

All good ideas!   :D
Ride Safe:
Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."