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darboots - 1961 CA77 from boxes

Want to keep a Restoration Log? Post it here! You can include photos. Suggested format: One Restoration per Thread; then keep adding your updates to the same thread...
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G-Man
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Location: Derby, UK
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Post by G-Man » Tue Jul 03, 2018 9:24 am

Yes - it was the AJS & Matchless owners' club area. About 8-10 other bikes there. Overall about 4-500 bikes on display.

G
darboots wrote:Cheers guys.

Love the Matchless Graham. Is that another hidden away behind yours?

The colour was chosen for me - the guy I'd bought the parts from had already had the powder coating done, along with the engine rebuilt (oil is leaking from the head gasket), and wheels re-rimmed, laced and the whitewalls fitted, etc. Some parts were missing, but overall, I'm very happy with my first restore. There are still a few details to complete, but it's mostly there and as we're moving house soon I'm glad it'll be on the road.
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

darboots
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Joined: Fri Mar 04, 2016 6:33 am
Location: Bristol, UK

Post by darboots » Thu Apr 11, 2019 7:22 am

Well, it's been a while...

After the MOT (road worthiness test in the UK), I managed to take the bike along to one of our IAM (Institute of Advanced Motorists) meetings to show it to the other guys. When I got it home following the meeting, I noticed that the speedo was 'stuck' around 120mph, and the needle would not return.

I know I didn't achieve 120mph, so have had to remove the unit to find out what's going on. I was hoping for a sticky needle, but have found that the return spring has wound itself tightly around the needle spindle and snapped. This seems due to the magnetic drive cup being 'sticky'.

Is anyone able to recommend a reputable speedo repair company in the U.K.? Or, someone who is able to supply a new return spring? Maybe a suitable (read cheap) donor speedo that I can get a return spring from a lesser bike?
1961 Honda CA77 Dream Touring
1983 Yamaha RD350 LCII YPVS
2006 KTM 450 EXC Racing
2014 Kawasaki ZZR1400FEF (ZX14R)

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G-Man
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Post by G-Man » Fri Apr 12, 2019 1:08 am

It's not too difficult to strip these down but you are going to have to look out for a spare speedo to get a spring.

Sounds like you must have it apart already. I think I may have a cosmetically damaged one soewhere.

Will you be at Stafford?

G

darboots wrote:Well, it's been a while...

After the MOT (road worthiness test in the UK), I managed to take the bike along to one of our IAM (Institute of Advanced Motorists) meetings to show it to the other guys. When I got it home following the meeting, I noticed that the speedo was 'stuck' around 120mph, and the needle would not return.

I know I didn't achieve 120mph, so have had to remove the unit to find out what's going on. I was hoping for a sticky needle, but have found that the return spring has wound itself tightly around the needle spindle and snapped. This seems due to the magnetic drive cup being 'sticky'.

Is anyone able to recommend a reputable speedo repair company in the U.K.? Or, someone who is able to supply a new return spring? Maybe a suitable (read cheap) donor speedo that I can get a return spring from a lesser bike?
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

darboots
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Posts: 75
Joined: Fri Mar 04, 2016 6:33 am
Location: Bristol, UK

Post by darboots » Fri Apr 12, 2019 1:52 am

G-Man wrote:It's not too difficult to strip these down but you are going to have to look out for a spare speedo to get a spring.

Sounds like you must have it apart already. I think I may have a cosmetically damaged one soewhere.

Will you be at Stafford?

G
Hi G,

I have the unt stripped to the frame inside - I need to open up the staked parts to have access to the needle spindle and magnetic cup. I can see the spring wound tighty around the boss just above the cup, and the cup seems to be very tightly bound to the drive cup - they don't move independantly very well. I imagine the spindle has tightened the spring into oblivion, which has eventually snapped it.

If you're interested in parting with your cosmetically challenged speedo, I'd be interested. Unfortunately I won't be at Stafford this time around - other 'duties' call.

Darren
1961 Honda CA77 Dream Touring
1983 Yamaha RD350 LCII YPVS
2006 KTM 450 EXC Racing
2014 Kawasaki ZZR1400FEF (ZX14R)

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G-Man
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Joined: Wed Mar 25, 2009 5:17 pm
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Post by G-Man » Fri Apr 12, 2019 1:36 pm

Hi Darren

I've had a full-on day today and forgot to look. Will look tomorrow.

G
darboots wrote:
G-Man wrote:It's not too difficult to strip these down but you are going to have to look out for a spare speedo to get a spring.

Sounds like you must have it apart already. I think I may have a cosmetically damaged one soewhere.

Will you be at Stafford?

G
Hi G,

I have the unt stripped to the frame inside - I need to open up the staked parts to have access to the needle spindle and magnetic cup. I can see the spring wound tighty around the boss just above the cup, and the cup seems to be very tightly bound to the drive cup - they don't move independantly very well. I imagine the spindle has tightened the spring into oblivion, which has eventually snapped it.

If you're interested in parting with your cosmetically challenged speedo, I'd be interested. Unfortunately I won't be at Stafford this time around - other 'duties' call.

Darren
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

darboots
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Posts: 75
Joined: Fri Mar 04, 2016 6:33 am
Location: Bristol, UK

Post by darboots » Fri Apr 12, 2019 2:12 pm

No problem at all Graham. I appreciate your time. I'm in no real rush.

Darren
1961 Honda CA77 Dream Touring
1983 Yamaha RD350 LCII YPVS
2006 KTM 450 EXC Racing
2014 Kawasaki ZZR1400FEF (ZX14R)

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G-Man
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Posts: 5678
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
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Post by G-Man » Sun Apr 14, 2019 12:31 pm

Hi Darren

Not the prettiest speedo in the world but works smoothly.

Image

Image

Click on this for video

Image

G
darboots wrote:No problem at all Graham. I appreciate your time. I'm in no real rush.

Darren
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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