my CB125S Project

satelliteone · Nitrous Nuisance Joined: 08 Feb 2007 Karma :

McGee · O RLY? Joined: 24 Jun 2005 Karma :

Wow what a difference Thumbs Up

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◙◙► K6 GSXR 600 ◄◙◙◙◙► K5 GSXR 1000 ◄◙◙◙◙► K5 GSXR 600 ◄◙◙◙◙► 96 RF600r ◄◙◙
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Its pronounced Jixxer!

Dalemac · World Chat Champion Joined: 15 Oct 2006 Karma :

wow dude that thing looks brand new....

what tyres are they and where did u get them?
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~~YBR125~~ -> GPZ500S -> SL1000

Merv · Two Stroke Sniffer Joined: 11 Mar 2005 Karma :

wow mate that looks sweet!looks like uv put in alot of hard work,bet you cant wait to ride the thing!
cheers
martin
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1988 CBR400 NC23

ncrn · World Chat Champion Joined: 24 May 2006 Karma :

Jeez how did you get that so clean?

amazing, I'd like to do something like that some day but I don't think I could do something like that Razz

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Past: 55 Sym Jet, 91 ZZR250, 03 NSR125R. Present: 97 ER-5.
https://www.nsr125.co.uk - NSR Owners forum.

WavyGravy · Scooby Slapper Joined: 10 Mar 2006 Karma :

Thats a great job you've done on that. I'm a fan of the 70's 125S's and have rebuilt a few. Did you respoke the wheels yourself? - if so was it difficult?
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1975 CB125s, 1991 GN250, 1990 Ducati Paso 906
"Don't wake him up - He's got insomnia - He's trying to sleep it off"

shonajoy · Nitrous Nuisance Joined: 15 Dec 2006 Karma :

That's amazing, what a job Thumbs Up

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Shona

satelliteone · Nitrous Nuisance Joined: 08 Feb 2007 Karma :

thanks for the post chaps, the spokes where taken out and cleaned, Lots of manual sanding. was going to get them zinc coated, but a decent alloy paint done them justice. Maybe in the future the zinc-ing will be done.

Every part was stripped, cleaned, rust treated and then repainted, i must of went through 7 wire brushes that fit on my drill. Lots of hours taken all the paint/rust off back to bare metal. Lucky for me, only the mudguards where rotten out. The frame was brill.

The engine took ages. The clutch was replaced with EBC parts. The gears, crank case was stripped cleaned. There was more water than oil when i first drained it out..lol The bore was fine but the piston rings where stuck. A good soaking in liquid spanner and a very small dremmel wire brush free`ed them up nice. Got a Gasket kit with seals and rebuilt the engine. Lapped the valves in and now have awsome compression. Points advance retard mech rebuilt also.

I did buy a few newer parts. But spent around 100 quid. Cheap bike me thinks. and have lots of fun with it.

And i did all this without a hyanes manual. The bike is that simple.

Sure i will ride the Jaffa project, it deserves a new life. For a 31 year bike, hopefully live on for a while yet.

Would love to do somthin a little bigger, but i can only drive 125cc so i might just go and take that dreaded test. probally on the honda too. Thanks for the input guys.

gavin · World Chat Champion Joined: 05 Jul 2005 Karma :

very cool!
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1988 TZR125 : 1990 RD350YPVS/ RGV250 HYBRID : 1982 RD80LC : 1983 RD80LC : 1994 RGV250 : 1991 TZR125 / CR500R HYBRID : 1976 BENELLI 500 QUATTRO : 2006 TRIUMPH 675

Gazdaman · I did a trackday!!! Joined: 12 Aug 2004 Karma :

I take my hat off to you sir!

When I saw the first few pics I thought it was a "This is my new project I'll keep you posted" kind of thing.

And I was thinking, yeah right, that's a non-starter, it's fucked.

Well done to you, seriously you've done a very very good job.

Gaz

Welshd1k · World Chat Champion Joined: 03 Oct 2006 Karma :

hard to beleive its the same bike!!!!
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

Dalemac · World Chat Champion Joined: 15 Oct 2006 Karma :

kawashima · World Chat Champion Joined: 03 May 2005 Karma :

You are professional rebuilder Shocked

TOM M · World Chat Champion Joined: 18 Mar 2005 Karma :

That looks awesome, such a difference.

I admire your hard work, you should be proud Thumbs Up

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Now owner of a 1200 Bandit

Zen Dog · World Chat Champion Joined: 11 Aug 2004 Karma :

If my current heap ends up looking half as good as that, i'll be a happy man. Nice job.

Zen Dog
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Current - '94 VFR750FR (Dead), '00 VFR800FI, 2011 CBF125 Previous - '10 Street Triple R, '92 MZ ETZ301, '05 TTR250, NSR125R, KMX125, "Honda" Win (chinese copy of an old Honda design with a C90 engine)
My bike trip around S.E. Asia 2010/2011

satelliteone · Nitrous Nuisance Joined: 08 Feb 2007 Karma :

thanks for the brill comments chaps. Nice to see so many saying i have done a good job. Like to do somthing bigger in the future, maybe an older classic perhaps.

Whilst it is raining, the bike is getting sorted indoors. The wiring is now 100% done. New bulbs, battery. Got to find a main stand spring, tried a washing machine spring, but it was too weak and it stretched.. Also i need a clamp for the exhaust that holds tight to the front pipe. The 6V ticker tocker relay has had it too so... back to the bike breaker too see what i can find. Next is the tank, to be flushed out the tap added. when i get better weather see if i can start the engine. Love to know what it sounds like.

Any how thanks for the comments, when i get nicer weather will put up some final pics of it running. Then off to the MOT station.

Cheeerz

Jamie S · World Chat Champion Joined: 28 Dec 2006 Karma :

nice bike ! spent some work on it there !

WavyGravy · Scooby Slapper Joined: 10 Mar 2006 Karma :

Hi again

Davidsilver has the main stand return spring for £1.35, chances are they could help you with the exhaust clamp. I cant recommend them highly enough, cheaper than a main honda dealer though you do need to add VAT and postage to their prices, dont be afraid to pick their brains. They also do a genuine indicator relay for £25 but personally I'd get one elsewhere,

www.davidsilver.co.uk

this place does 6v relays for between 3 and 7 pounds, havent used then though
https://motorcycleproducts.co.uk/

When it comes to starting there might be problems, the rubber disc in the petrol tap might be hardened which can make the tap leak out the side, there is only one good position for the connection to the points, between the insulating washers, anywhere else = no spark and a very hot coil.

To set up the valve timing you line up the T mark on the flywheel with the mark, then with the points plate/auto advance/ and mounting plate removed line up the 'o' stamped on the cam gear with the notch/triangle on the cylinder head (its about 11 or 12 o'clock)

Points gap is 0.3mm

Tappets 0.05mm

Plug gap 0.7mm

You've probably already done all that but as you said you had no manual theres no harm in having a reference.

Have fun
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1975 CB125s, 1991 GN250, 1990 Ducati Paso 906
"Don't wake him up - He's got insomnia - He's trying to sleep it off"

WelshWizard · Derestricted Danger Joined: 14 Feb 2007 Karma :

real nice job I hope she fires up and works sweat for you

WelshWizard · Derestricted Danger Joined: 14 Feb 2007 Karma :

real nice job I hope she fires up and works sweat for you

Bru · Trackday Trickster Joined: 01 Feb 2007 Karma :

www.davidsilverspares.co.uk

element · World Chat Champion Joined: 23 Jan 2006 Karma :

no way. I had one of those in my garden for over a year. Was all complete but needed alot of work and I couldnt be bothered so I scrapped it..

anyways thats a damn good job there. Mine was in similar condition if not a little tidier Sad

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04' DT125RE (run-a-bout) // 89' DT125R (rebuilt + supermoto conversion)
SPARES FOR SALE. 2RK TZR // 82 DR125 // DT125R/E .... PM ME...

Jack_Cheese · World Chat Champion Joined: 14 Jul 2005 Karma :

satelliteone · Nitrous Nuisance Joined: 08 Feb 2007 Karma :

Chheeerz WavyGravy for the usefull info. I got the valve timing sused with out the book, simple design. The other bits are a nice reference, thanks.. will be getting the feeder guages out morra for a final stup.

Thanks for all that have posted, makes my heart warm.

Just for an update. when i added fuel to the tank, switch on the tap, applied the choke, two kicks and she fired up. testiment to honda engines that.. I had to set up the tick over and fuel mixture on the carb and its running sweet. The tappets need slight adjustment tho. Been riding the bike up and down the drive. How fun.. cant wait now for an MOT..

Cheeeerz guys!

satelliteone · Nitrous Nuisance Joined: 08 Feb 2007 Karma :

Well its nearly finished. Engine runs well sweet. Just a fork seal to replace and the 6V ticker tocker and then down MOT station.

Here it is the CB125S/J 1976

From this!

https://i31.photobucket.com/albums/c357/satelliteone/cb125j/DSCN0096.jpg

To this

https://i31.photobucket.com/albums/c357/satelliteone/cb125j/DSCN0237.jpg

In six months

Thanks every one who has said well done!.. Sadly i have to sell her now, my car just cost me loads and the roof need replacing, Its a VW golf MK1 Cabriolet, The MOT, Tax insurance just put me in debt.

I have put the CB125 on ebay.
https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=019&sspagename=STRK%3AMESE%3AIT&viewitem=&item=290090397943&rd=1&rd=1

My next bike project will come along soon. Just when i get back on my feet.

Chow for now..
Andy