Author Topic: CB750K8 Project  (Read 49017 times)

Offline martin_uk

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Re: CB750K8 Project
« Reply #75 on: January 14, 2015, 06:00:52 PM »
Tank badges prepared for painting.

2015_0112frame0025 by nitram2010, on Flickr

Took a while to trim the masking tape with scalpel.

2015_0112frame0030 by nitram2010, on Flickr

Painted, but masking not removed.

Used Simoniz Tough Satin Black, which does not need primer

I have tried painting with small brush but spraying gives a more uniform finish.

Not forgetting the scews

2015_0112frame0031 by nitram2010, on Flickr
« Last Edit: January 14, 2015, 06:08:59 PM by martin_uk »
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline UK Pete

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Re: CB750K8 Project
« Reply #76 on: January 14, 2015, 06:03:51 PM »
Very intricate cutting of the masking tape martin

Offline martin_uk

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Re: CB750K8 Project
« Reply #77 on: January 14, 2015, 06:07:51 PM »
Very intricate cutting of the masking tape martin

It was not perfect, but by angling the spray managed to cover sides and background to letters OK.

At least I could do most of it in the warm and also warmed up badges before painting.

I will take a pic after masking removed.

« Last Edit: January 14, 2015, 06:09:30 PM by martin_uk »
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline martin_uk

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Re: CB750K8 Project rear shock absorbers
« Reply #78 on: January 15, 2015, 06:57:23 PM »
Just stripped and cleaned shock absorbers and have added a few points I have learnt.

When taking apart it is best to take pressure off top fixing.

Ideally you would use spring clamps/compressors, but if you dont have, with great caution you can use cable ties.

First set adjuster to maximum pretension.

Use two or more cable ties to hold colis together.

2015_0112frame0040 by nitram2010, on Flickr

Set adjuster to minimum and the spring should be held compresed enough to remove top fixing. ( or collets)

Treat the tensioned spring with extreme caution  as there is quite a lot of built up energy which will release if cable ties fail, so leave on its side without contact with anything else. (If it was upright and tie/s failed it would take off)

It is a good idea to use penetrating fluid to soak the threads, push out the top rubber bush to access  from top.

2015_0112frame0041 by nitram2010, on Flickr



On CB750 there is a 17mm across flats nut that locks shaft to top and needs to be loosened using a spanner between spring coils and unscrew until reaches end of thread.

You can then hold shaft with nut and use a bar to unscrew top.

On mine one came off OK but I had to warm top part with hot air gun to expand and release.


2015_0112frame0043 by nitram2010, on Flickr


You can now easily check the damping resistance and clean up the body before reassembly, reset adjuster to max and remove ties.
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline Trigger

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Re: CB750K8 Project
« Reply #79 on: January 15, 2015, 07:01:37 PM »
Be very careful as i have a nice scar on my top lip from doing this job without a press.

Offline Bitsa (Ralph Wright - RIP)

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Re: CB750K8 Project
« Reply #80 on: January 15, 2015, 08:39:05 PM »
Well there you go let them be to get on with it
Cheers
Bitsa
Long Live Best Bitter.Status Quo and Sohc Bikes and common sense which you can not teach

Offline MarkCR750

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Re: CB750K8 Project
« Reply #81 on: January 15, 2015, 08:54:31 PM »
Martin I PM'd you about the seat but I'm not sure you got it, anyway I will get the seat out of the garage and send it this weekend or early next week, I got your PM so I have your address etc, cheers Mark.
« Last Edit: January 15, 2015, 09:33:59 PM by MarkCR750 »
Suzuki GT250A (Nostalgia)
1977 K7 CR750 (lookalike, what of I’m not sure)
Ducati 900SS (Soul & Speed)
Ducati M900 Monster (Handling & character)
Thruxton 1200 (suits me)
James Captain 197 (pure adrenaline, i.e. no brakes!)
"Eff yir gitten awvestear yir gooin te farst"
Sir J.Stewart.

Offline martin_uk

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Re: CB750K8 Project
« Reply #82 on: January 16, 2015, 11:24:36 AM »
Shocks reinstalled

2015_0116frame0022 by nitram2010, on Flickr

Not perfect but new bolt looks nice  :)

2015_0116frame0020 by nitram2010, on Flickr

Side stand with new rubber and plated fixings

2015_0116frame0012 by nitram2010, on Flickr

Ignition switch and instrument bracket, can you spot the deliberate mistake?

2015_0116frame0016 by nitram2010, on Flickr

Yokes fitted.

2015_0116frame0015 by nitram2010, on Flickr

Tail light looks OK from outside.

2015_0116frame0025 by nitram2010, on Flickr

Not so good inside

2015_0116frame0027 by nitram2010, on Flickr

2015_0116frame0028 by nitram2010, on Flickr
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline martin_uk

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Re: CB750K8 Project
« Reply #83 on: January 19, 2015, 06:03:15 PM »
Finished tank badge.

2015_0119frame0024 by nitram2010, on Flickr
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline martin_uk

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Re: CB750K8 Project
« Reply #84 on: January 19, 2015, 06:17:14 PM »
Removed the tyres, is it me getting old or just really old tyres, but hard work. :'(

Front rim quite rusty on inside  and most spokes seized  >:(

Have just ordered new DID rim from DSS with repro spokes.

Rear rim spokes not seized but quite rusty so ordered a new set.

2015_0119frame0046 by nitram2010, on Flickr

DSS dont have DID rear rims listed, almost bought a Morad alloy from another supplier, but decided against another £100 plus and the rear rim is not so visible, but the wheel is bloody heavy with the rear drum.

Rear retainer came out easly after drilling stakings.

2015_0119frame0047 by nitram2010, on Flickr

2015_0119frame0051 by nitram2010, on Flickr

Plus it helps to have the tool ;D

2015_0119frame0049 by nitram2010, on Flickr

Havnt seen this moulded rim tape before?

2015_0119frame0078 by nitram2010, on Flickr

2015_0119frame0079 by nitram2010, on Flickr

Prepared and painted instruments.

2015_0119frame0035 by nitram2010, on Flickr
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline martin_uk

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Re: CB750K8 Project
« Reply #85 on: January 26, 2015, 06:06:25 PM »
Made some progress on wheels.

Rebuilt rear with new spokes and bearings.

New DID rim for front with new spokes and bearings and lightly polished hub.

2015_0126frame0095 by nitram2010, on Flickr

2015_0126frame0097 by nitram2010, on Flickr

2015_0126frame0096 by nitram2010, on Flickr

Hub before

2015_0126frame0090 by nitram2010, on Flickr

2015_0126frame0089 by nitram2010, on Flickr

2015_0126frame0098 by nitram2010, on Flickr

2015_0126frame0099 by nitram2010, on Flickr
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline martin_uk

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Re: CB750K8 Project
« Reply #86 on: January 26, 2015, 06:09:45 PM »
Soak and heat didnt work on releasing some of spokes, so................

2015_0126frame0087 by nitram2010, on Flickr
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline Bitsa (Ralph Wright - RIP)

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Re: CB750K8 Project
« Reply #87 on: January 26, 2015, 07:02:04 PM »
Nice wheel looks good
Cheers
Bitsa
Long Live Best Bitter.Status Quo and Sohc Bikes and common sense which you can not teach

Offline martin_uk

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Re: CB750K8 Project
« Reply #88 on: January 26, 2015, 09:15:42 PM »
Nice wheel looks good
Cheers
Bitsa

Thanks Bitsa, like to say it gets easier but still tricky, but worth doing.
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline Trigger

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Re: CB750K8 Project
« Reply #89 on: January 26, 2015, 09:31:32 PM »
Martin, did you receive the fork cap mate ?

 

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