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bikermikey1
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oops

Post by bikermikey1 on Sun 13 Nov 2016, 7:35 pm

sooo... while ive been fixing up my cb i crashed my cbf 600 !!

it slid down  the road into a kerb which put a big hole in the crank case !! not good at all..

its been suggested to me - fix it up with chemical metal. has anyone got anything to say about this?

fortunately the cb5 is now in one piece and on the road so i do have transport.. i will post a picture of it shortly

all the best everyone

Mikey

sullivj
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Re: oops

Post by sullivj on Sun 13 Nov 2016, 7:38 pm

Sorry to hear about the CBF. I had one - they're nice bikes.

Hope you're OK?

I would worry about metal fragments being within the engine if it's ground right through. 

I would suggest a 2nd hand case would be better than a chemical metal one. Either way, make sure you've got all of the debris out of the engine.
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bikermikey1
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Re: oops

Post by bikermikey1 on Sun 13 Nov 2016, 7:42 pm

@sullivj wrote:Sorry to hear about the CBF. I had one - they're nice bikes.

Hope you're OK?

I would worry about metal fragments being within the engine if it's ground right through. 

I would suggest a 2nd hand case would be better than a chemical metal one. Either way, make sure you've got all of the debris out of the engine.
thanks pal , im fine . 
yep i bought a second hand cover on ebay. 
need to sort out the crank case though. 
and yes need to make sure theres nothing inside.
ill try get a picture on here

thanks for the message :-)
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bikermikey1
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Re: oops

Post by bikermikey1 on Sun 13 Nov 2016, 7:44 pm

@sullivj wrote:Sorry to hear about the CBF. I had one - they're nice bikes.

Hope you're OK?

I would worry about metal fragments being within the engine if it's ground right through. 

I would suggest a 2nd hand case would be better than a chemical metal one. Either way, make sure you've got all of the debris out of the engine.

oh i see sorry.. you mean a second hand crank case ? yes this is a good point. i wonder what would be involved in changing that..?
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bikermikey1
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Re: oops

Post by bikermikey1 on Sun 13 Nov 2016, 7:49 pm


there you have it ... nasty  Sad Mad Crying or Very sad Neutral No affraid scratch

sullivj
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Re: oops

Post by sullivj on Sun 13 Nov 2016, 7:59 pm

Very nasty indeed... I feel your pain...

I think even a specialist Ali welder might struggle with that.

Is it insured? If not, a replacement second hand engine may be the 'easiest' option.
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bikermikey1
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Re: oops

Post by bikermikey1 on Sun 13 Nov 2016, 8:04 pm

@sullivj wrote:Very nasty indeed... I feel your pain...

I think even a specialist Ali welder might struggle with that.

Is it insured? If not, a replacement second hand engine may be the 'easiest' option.

like you say.... think we will be looking into taking it apart and replacing the case...

insured yes, hesitant to make a claim though, i want my premium to go down not up . im young and live in london :-)
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eternally_troubled
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Re: oops

Post by eternally_troubled on Sun 13 Nov 2016, 8:26 pm

I fixed a crack (caused by dropping) in my case with epoxy putty/chemical metal stuff, but it was waaaay smaller than your hole!

Part of the problem you would have is that the hole goes across the joint between the side cover and the main casting/sump area... as sullivj said 'it's nasty'.

If you were going to fix it with any kind of putty you would need to take the case off so you can fix it in two halves: one fix for the case and one for the engine - even then it might not work.

The horrific bodgeing part of me thinks this:

Take it all apart and clean up all the oil and grease off it using degreaser/IPA or similar. Do this bit very well or it will fail.

Then try and bend the knackered bits back into place - they may well snap (doesn't matter). The main 'lump' in your photo looks like one of the lugs where the case bolts on - assuming this bit falls off then try and separate it into two lumps by undoing the bolt - one that fits the case and one that fits the engine.

Glue the two or more 'lumps' from above back into their respective places using Araldite Standard (an epoxy glue, not a putty) - it takes 24 hours to harden, so you might need to work out how to hold the pieces in place.

So (after the Araldite has set) you will have an engine and a cover that might fit back together a bit better, but there will still be a hole (probably). Make sure everything is clean again, then use the epoxy putty/chemical metal/JB Weld to plug the hole from the outside.

I can't vouch for how well this will work - if you are prepared to 'have a go' it might be worth it - it probably won't end up looking 'good' but if you are planning on keeping it not selling it that may not matter.


Failing that I would find another engine - this might not be such a bad idea if the insurance company let you 'buy it back' for a suitably low price (assuming you have fully comp and you have claimed).

Obviously if you aren't insured or haven't claimed you have nothing to loose by swapping the engine, other than the cost of a new engine - but you can chalk that down to experience!

It's good you got the CB5 running...
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Jameshambleton
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Re: oops

Post by Jameshambleton on Sun 13 Nov 2016, 9:22 pm

I'd say it's cheaper to get a replacement engine and use your existing engine for spares as it'll be an entire low end rebuild. 

I wouldn't personally put it through insurance for 2 reasons. 1. you lose your NCB, 2. you then have to declare that you've had to make a claim on your insurance policies for the next 5 years as it'll be logged on the insurance database that you've had to make a claim.
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bikermikey1
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Re: oops

Post by bikermikey1 on Sun 13 Nov 2016, 9:29 pm

@eternally_troubled wrote:I fixed a crack (caused by dropping) in my case with epoxy putty/chemical metal stuff, but it was waaaay smaller than your hole!

Part of the problem you would have is that the hole goes across the joint between the side cover and the main casting/sump area... as sullivj said 'it's nasty'.

If you were going to fix it with any kind of putty you would need to take the case off so you can fix it in two halves:  one fix for the case and one for the engine - even then it might not work.

The horrific bodgeing part of me thinks this:  

Take it all apart and clean up all the oil and grease off it using degreaser/IPA or similar.  Do this bit very well or it will fail.

Then try and bend the knackered bits back into place - they may well snap (doesn't matter).  The main 'lump' in your photo looks like one of the lugs where the case bolts on - assuming this bit falls off then try and separate it into two lumps by undoing the bolt - one that fits the case and one that fits the engine.

Glue the two  or more 'lumps' from above back into their respective places using Araldite Standard (an epoxy glue, not a putty) - it takes 24 hours to harden, so you might need to work out how to hold the pieces in place.

So (after the Araldite has set) you will have an engine and a cover that might fit back together a bit better, but there will still be a hole (probably).  Make sure everything is clean again, then use the epoxy putty/chemical metal/JB Weld to plug the hole from the outside.

I can't vouch for how well this will work - if you are prepared to 'have a go' it might be worth it - it probably won't end up looking 'good' but if you are planning on keeping it not selling it that may not matter.


Failing that I would find another engine - this might not be such a bad idea if the insurance company let you 'buy it back' for a suitably low price (assuming you have fully comp and you have claimed).  

Obviously if you aren't insured or haven't claimed you have nothing to loose by swapping the engine, other than the cost of a new engine - but you can chalk that down to experience!

It's good you got the CB5 running...

thanks very much for the messsage. i am leaning towards looking for another engine.  unfortunate thing is im looking to sell this 600 now (lol) so not too keen on doing a "horrific bodge" Razz and then selling... nice to sell something solid and be straight up with potential buyers and all that...
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bikermikey1
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Re: oops

Post by bikermikey1 on Sun 13 Nov 2016, 9:31 pm

@Jameshambleton wrote:I'd say it's cheaper to get a replacement engine and use your existing engine for spares as it'll be an entire low end rebuild. 

I wouldn't personally put it through insurance for 2 reasons. 1. you lose your NCB, 2. you then have to declare that you've had to make a claim on your insurance policies for the next 5 years as it'll be logged on the insurance database that you've had to make a claim.

yes exactly and the insurers already rob us

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