Author Topic: 550 F2 started!  (Read 7934 times)

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1
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Re: 550 F2 started!
« Reply #150 on: January 15, 2022, 08:42:30 PM »
The frame looks OK Roo. I've never seen those ripples along the top tube either 🤔🤔🤔
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Laverdaroo

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Re: 550 F2 started!
« Reply #151 on: January 15, 2022, 11:18:49 PM »
Its on the transmission page, should be 91207374000 but check


 Thanks mate. couldnt find it.
Mornings are the invention of the devil!
1977 CB550F (new money pit!!)
2002 VFR800 VTEC
1977 CB400F (current money pit!)
1998 Ducati 748\853 conversion
1980 ish CB750KZ in a billion bits (need to get rid!!)

Offline Laverdaroo

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Re: 550 F2 started!
« Reply #152 on: January 15, 2022, 11:35:43 PM »
ordered, just all the bearings and the rubber and plastic for the engine and we can start the dismantle once there's abit of room.
Mornings are the invention of the devil!
1977 CB550F (new money pit!!)
2002 VFR800 VTEC
1977 CB400F (current money pit!)
1998 Ducati 748\853 conversion
1980 ish CB750KZ in a billion bits (need to get rid!!)

Online Bryanj

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Re: 550 F2 started!
« Reply #153 on: January 16, 2022, 06:12:58 AM »
Dont forget the "hidden" crankcase bolt and you have my number, just not this week as i am away in deepest darkest Cornwall

Offline Oddjob

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Re: 550 F2 started!
« Reply #154 on: January 16, 2022, 06:36:42 AM »
I'm fairly sure the ripples are not uncommon. Seem to remember seeing them when I took the paint off my frame in the late 70s, I think they are harder to see with black paint on but with grey there is light and shadow so they show up a lot more.
Don't play stupid with me, I'm better at it

Offline Sesman

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Re: 550 F2 started!
« Reply #155 on: January 16, 2022, 08:42:26 AM »
Me too. I have them on my 77 F2, but the plot is straight and true. The light and angle of view can also exaggerate them. I gave mine a good rub down to flatten them slightly and after powder coat they are barely detectable.

I’m sure they are as a result of the manufacturing process, but i can’t explain how or why.

Offline Seabeowner

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Re: 550 F2 started!
« Reply #156 on: January 16, 2022, 08:49:45 AM »
Third that, pretty sure there is some on one of mine.
Phil
1971  CB500K0  Candy Jade Green
1973  CB500K1  Candy Ruby Red
1975  CB550F1   Shiny Orange
1978  CB550K     Excel Black

Offline Sesman

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Re: 550 F2 started!
« Reply #157 on: January 16, 2022, 08:53:20 AM »
Roo.

On bearings, rubber and plastic. Are you aware that the gasket sets don’t include the rubber ‘pontefract cakes’ in the cam/head?

Just checking as it was extremely frustrating when I got to the final assembly stage and found they’re not supplied. NJ stocks them. If your not familiar with the camshaft set up there is bit of a trick to getting the cam chain on the sprocket. It involves ensuring you have the chain resting on the cam on the correct side of the cam wheel/shaft. The manual photos give you a good clue.

Offline Oddjob

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Re: 550 F2 started!
« Reply #158 on: January 16, 2022, 10:07:39 AM »
A trick I found useful was putting the barrels on, then putting the camchain tensioner in place, making sure it's located in the slot in the bottom crankcase. Now undo the locking nut on the tensioner and push the blade back as far as it will go by hand, nip up the locking nut and when you come to fit the chain onto the sprocket you'll find it a lot easier.
Don't play stupid with me, I'm better at it

Online Bryanj

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Re: 550 F2 started!
« Reply #159 on: January 16, 2022, 11:21:15 AM »
Itl be because the top is not a "tube" but two stampings welded together and stamping causes stretching and shrinking of the metal

Offline Oddjob

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Re: 550 F2 started!
« Reply #160 on: January 16, 2022, 12:50:32 PM »
Roo, need a favour. Can you measure what size the top mount is on the rear suspension. Not the thread but the section where the mount sits, I need to order some rubber mounts for my dampers but don't know what size they are and the frame not available to measure ATM.
Don't play stupid with me, I'm better at it

Offline Laverdaroo

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Re: 550 F2 started!
« Reply #161 on: January 16, 2022, 07:19:20 PM »
just decorating Ken but I'll do it tonight for you mate.  Bear with........
Mornings are the invention of the devil!
1977 CB550F (new money pit!!)
2002 VFR800 VTEC
1977 CB400F (current money pit!)
1998 Ducati 748\853 conversion
1980 ish CB750KZ in a billion bits (need to get rid!!)

Offline Laverdaroo

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Re: 550 F2 started!
« Reply #162 on: January 23, 2022, 08:46:10 PM »
Right, house decorated and on the market..........and breath!


House done,,,,,,,tick

Been fishing,,,,,,,,tick

Blanked like a dog,,,,,,,,,,tick! ;D


Shed o'clock! 8)

Still waiting on a bit of room but got the all clear on the frame, it's a gnats biased to the right by .5mm and I reckon I can live with that. Happy days :)

Amazing that nobody has really noticed these ripples until 'numb nuts' here chucks a bit of grey acid etch at the frame. I think you're right Ken Cool its a standard thing, I had an idea it was a manufacture process thing from the stamping but glad it's all cool and straight. Cost me 4 bottles 'of Dog' for the check......winning! ;D

Thanks for all the advice on the hidden bits and bobs. I've got the Pucks Phil but didnt know about the other  points about hidden bolts etc. Ive not done one of these before so looking forward to the pondering sessions if I'm honest......That is when I get my shed back and can get at stuff! I'm no where near re-assembly, that would involve dissasembly and currently all the crap from the house that, apparently doesn't look good to perspective buyers has to go in the shed.
I mean, what's wrong with a  lifesize Valentino Rossi standing next to an M1 R1?? I ask yer, some folk!  It looked ace under the stairs and now its on my bench in the sodding shed!

Onwards ;D
Mornings are the invention of the devil!
1977 CB550F (new money pit!!)
2002 VFR800 VTEC
1977 CB400F (current money pit!)
1998 Ducati 748\853 conversion
1980 ish CB750KZ in a billion bits (need to get rid!!)

Offline Laverdaroo

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Re: 550 F2 started!
« Reply #163 on: February 05, 2022, 03:59:45 PM »
Managed a bit more work on the carbs today in between doging hopuse jobs for 'The Long Haired General' and currently bobbing them together in the bit of space Ive ,anaged to climb nto in the shed to have a quite fettle with Planet Rock to sooth the soul for a few hours.

Whilst fiddling my thoughts wandered to brakes and teh twin disc set up I want to do on the front. Ive managed to get a complete set up of twin discs, calipers, new stainless pistons and honda seals so I have all I need for the bottom until I start on the hub modifications (as read on here by Bryan and the rest of the super knowledgable) in the various chats and posts. That being said, I think I might be asking a few questions come the time. However, I havent really thought of what master cylinder I'm going to run on the renthal bars i have for the final build. Theyre 7/8" medium rise street bars in a matt black cerecote finish and look superb. I'd like a reasonably priced master to go with t but getting a little confused on the ratio's required for the build up. Ive read 17mm cylinders and plungers, 19mm and I think 16 too. I realise the extra force required for teh extra caliper but get a little 'hooped' when it comes to the ratios; smaller bore more pressure meaning smaller plunger or larger piston to fill the larger sytem at the same pressure.

Can anyone help out on this?
Phil, (SESMAN) di you o a twin set up, up front? What di you come to as a good solution?


Anyway back into it, just thought I'd type ths now before I climb back into my hollow to continue in the shed.

Answers on a post card please....
Mornings are the invention of the devil!
1977 CB550F (new money pit!!)
2002 VFR800 VTEC
1977 CB400F (current money pit!)
1998 Ducati 748\853 conversion
1980 ish CB750KZ in a billion bits (need to get rid!!)

Offline Oddjob

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Re: 550 F2 started!
« Reply #164 on: February 05, 2022, 04:06:44 PM »
I'm using a CB1300 front master cylinder on mine Roo, it has a mirror mount if that's important. A lot don't. It also has a front brake light switch on it in case you want to ditch the lower yoke version. I got the braided brake lines from HEL.

I'm lucky as I own a CB1300 and just replaced the clutch and brake master cylinders for radial ones so the old ones were spare. The clutch MC will also be used if I can finish the hydraulic clutch conversion I'm planning.

https://www.ebay.co.uk/itm/203648282305?hash=item2f6a622ec1:g:GOcAAOSw1dhhZY0w

I have a spare original cap for the reservoir and a spare lever if your getting that.
« Last Edit: February 05, 2022, 04:11:22 PM by Oddjob »
Don't play stupid with me, I'm better at it

 

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