Author Topic: Doms CB550F1 project  (Read 48412 times)

Offline Bryanj

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Re: Doms CB550F1 project
« Reply #285 on: September 17, 2023, 10:53:04 PM »
Advisable for new on kicstart shaft inside cases

Online Oddjob

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Re: Doms CB550F1 project
« Reply #286 on: September 18, 2023, 02:17:12 AM »
No, I meant you can buy cheaper alternatives Dom, not reuse old ones. The ones on the gearbox shafts are special so need to be Honda ones, the rest of them should be ok to use copies. I'd certainly use a new one on the clutch basket for instance and on the kickstart shaft if removed. When you go to replace the primary damper rubbers you'll think you need to remove the 3 screws but IIRC it's just the circlip you need to remove to split it in half. Don't remove the screws unless you have to. Far too many fall out again afterwards.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline DomP

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Re: Doms CB550F1 project
« Reply #287 on: September 19, 2023, 03:28:29 PM »
No, I meant you can buy cheaper alternatives Dom, not reuse old ones. The ones on the gearbox shafts are special so need to be Honda ones, the rest of them should be ok to use copies. I'd certainly use a new one on the clutch basket for instance and on the kickstart shaft if removed. When you go to replace the primary damper rubbers you'll think you need to remove the 3 screws but IIRC it's just the circlip you need to remove to split it in half. Don't remove the screws unless you have to. Far too many fall out again afterwards.

Interesting you should say that Ken, I thought they needed removing too (they dont) so set about taking them out with a JIS screwdriver, they were already loose but the staking prevented them from fully undoing by themselves. I'll be making sure they are tight and staked when I put it all together. 

The dampers when removed were pretty hard.
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Online Oddjob

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Re: Doms CB550F1 project
« Reply #288 on: September 19, 2023, 04:39:00 PM »
When you fit the new rubbers you may think it's not going to go back together. A little silicon oil on them works wonders.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline DomP

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Re: Doms CB550F1 project
« Reply #289 on: September 19, 2023, 05:03:01 PM »
When you fit the new rubbers you may think it's not going to go back together. A little silicon oil on them works wonders.

Oh that's good then, there was a very small amount of play in it
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Online Oddjob

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Re: Doms CB550F1 project
« Reply #290 on: September 19, 2023, 06:37:41 PM »
Before or after the new rubbers Dom.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline DomP

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Re: Doms CB550F1 project
« Reply #291 on: September 19, 2023, 09:34:58 PM »
Before or after the new rubbers Dom.

With the old rubbers Ken, still waiting on my DS order due to a few backorder but my Cruizinimage pistons are on their way.
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline DomP

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Re: Doms CB550F1 project
« Reply #292 on: September 21, 2023, 04:46:30 PM »
My plan is to prep the engine ready for paint this weekend except for the barrels as they'll be going off to Bryan for some work.  There's not much paint left on them, just a bit of black remnants from a previously bad paint job so a bit of nitromors and a bit of scotchbriting should sort it.  I was going to use carb cleaner as a final pre paint prep then Simoniz vht aluminium silver paint followed my a 'Millyard bake'
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline DomP

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Re: Doms CB550F1 project
« Reply #293 on: September 21, 2023, 07:09:27 PM »
I have a question, has anyone on here any experience with straightening bent fins?  I've got a few which are out of sight and minor enough that they can be ignored but two on the cylinder head are top left and obvious.  I've watched a few videos of warming with MAPP gas and carefully tweaking back, do I dare risk it before painting or just accept them as battle scars?
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline McCabe-Thiele (Ted)

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Re: Doms CB550F1 project
« Reply #294 on: September 21, 2023, 07:43:23 PM »
Think of it as age related patina.👍
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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Re: Doms CB550F1 project
« Reply #295 on: September 21, 2023, 07:51:00 PM »
If you don't get the heat just right, the alloy easily snaps. Best leave be unless you're doing a concours engine renovation.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

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 DomP

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Re: Doms CB550F1 project
« Reply #296 on: September 21, 2023, 08:13:02 PM »
Ted and Julie, I think you're correct. Let's hope the temptation doesn't get the better of me!
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline McCabe-Thiele (Ted)

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Re: Doms CB550F1 project
« Reply #297 on: September 21, 2023, 08:22:12 PM »
You will be well disgruntled if one snaps as NJ has warned you.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline K2-K6

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Re: Doms CB550F1 project
« Reply #298 on: September 21, 2023, 08:22:45 PM »
Agree if you're not confident, to leave it, as snapping a bit off will look worse.

If you waht to try something to feel what it moves like, an old / broken clutch lever of similar, clamp end in vice, put ring spanner on it and pull very slightly to tension load it, then heat with torch where you want it to bend, then you'll feel it yeald as the heat reaches critical point to let it move. No real increase in pressure, just as it comes in range you'll feel it start to soften enough so it moves easily.

Some use soap on surface to see it going brown as it approaches the right heat level too.

Offline McCabe-Thiele (Ted)

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Re: Doms CB550F1 project
« Reply #299 on: September 21, 2023, 08:56:20 PM »
Using soap as a temperature indicator that takes me back to the 1960s.👍👍👍
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

 

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