Doms CB550F1 project

[Trigger]

I had a bit of a deeper delve into my bike yesterday, the air box has been messed with to the point I'm not sure what's missing even when looking at the Cmsnl parts list.  I'm guessing lots of the parts aren't even available any longer which leaves a bit of a dilemma.

Can anyone advise me as to why I have two cut wires in the loom that have been connected seemingly the wrong way? Hopefully I've got the carb parts here to reassemble and bench sync and fuses on their way so I might be able to test the electrics by next week...who knows I might even get it started.

This is the part you need for the bottom of your air box Dom >>>> https://www.ebay.co.uk/itm/355020970267?hash=item52a8e6191b:g:qzcAAOSwF8Nk-KJG&amdata=enc%3AAQAIAAAAwHvKo2rJus4LgdssI7kGjCt8xNFvDZkkQLL%2F3dC27wc96qT4KCMTLEUyfuOXsFaM9D%2B5IchmMOY2CKs0fKgdgBzl6m7YD5IdJUDvgxlrQovxO1zokbKr7zD3Ve1pXdZKgn7USjGsYDVk77mryw%2F%2BV7n%2F8N6TSOQ3K7EntaPaE1%2FufwdtEiFICxLaABemyOxC8dA7MII5NQHLckHv0%2F%2Frhb2qkUIC9w%2BboHMtGqHx2QYBbGECceSXtnBYJQPAAXbhqA%3D%3D%7Ctkp%3ABk9SR9yBoMvNYg

[DomP]

Thanks Trigger, for now I'm reserving all my funds for this damn engine.  What is the rotor thread for removal, m16 x 1.5?

[Trigger]

Thanks Trigger, for now I'm reserving all my funds for this damn engine.  What is the rotor thread for removal, m16 x 1.5?

That size is correct. Looks for a car wheel nut at that size, thread it in by hand attach a impact gun and it is off 

[Oddjob]

If you've got other Hondas or are maybe planning to buy them in the future this is the tool I use.

It's a genuine Honda tool and works really well, never failed yet. I just find the right thread, thread it into the rotor and hit one of the cross pieces with a rubber mallet. It's not as cheap as a bolt but you don't need an impact driver.

https://www.davidsilverspares.co.uk/CB500K1-FOUR-1972/part_61715

The upside of buying genuine tools is they sell really well when you no longer need them, usually for more than you've paid as they are always going up in price. Plus they tend to make working on the bike so much easier, I have hundreds of genuine tools, pity your not closer, I could pop round and let you use them. You'd be able to borrow my valve compressor as well 

[DomP]

Thanks Ken, you'd be welcome as its getting on my eaves a bit.  Interestingly an M16 x 1.5mm bolt isn't the right size on this rotor the thread looks a bit smaller than 1.5mm comparing it to the bolt I've bought.  Genuine tool it might be then.

[K2-K6]

  Oh no, not thread pitch again 

[Trigger]

Someone must of buggered the thread Dom, you will have to use a pulley to get it off 




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[DomP]

The thread looks clean as, could the bolt be 1.75mm?!

Plan B in action

[Oddjob]

I'll check the rotors I have off at present, thread the tool into them and then check the pitch and let you know.

[Trigger]

The thread looks clean as, could the bolt be 1.75mm?!

Plan B in action

Defiantly a 1.5, just tried it on 3 different ones. Unless they have put a 400 one on 

[Trigger]

Oh no, not thread pitch again 
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[Oddjob]

Just checked the Honda tool and they are all 1.5 pitch, the arms are marked 16, 18, 20, 22.

Check the bolt supplied to be 100% sure that's 1.5mm and they've not sent something else by mistake.

[DomP]

I'll blame the bolt I got from my local tool hire shop, it cost me nothing as they couldn't be bothered to charge me for it.

[Trigger]

I'll blame the bolt I got from my local tool hire shop, it cost me nothing as they couldn't be bothered to charge me for it.

You can not any old bolt, if it snaps you will have another problem. The bolt needs to be high tensile and that is why a car wheel bolt is ideal 

[Seabeowner]

I used a bolt from a Fiat van. Got the end turned down like the real tool. No impact, so tighten, hit with mallet, tighten, hit with mallet and they pop off.