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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Removing the inlet valve guide retaining rings.... the hard way
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<blockquote data-quote="timetraveller" data-source="post: 145239" data-attributes="member: 456"><p>No problem Peter,I am happy to try to explain what it can and cannot do. The device can serve at least two purposes. First I should make it clear that it is not intended to hold a loose guide into a worn hole. For that purpose an oversized lower guide is required but that is simple enough that any reasonably competent machinist could make one. Instead, and assuming that either the original hole and guide are a good fit or an oversized guide had been made and fitted, then my gadget can hold the guide in place either with or without a seal. It does not require the thread to be still usable and from my experience if the guide has been fretting up and down it is likely that the thread is also u/s. It is made long enough, and with its lower end designed in such a way that it can either just hold the guide down or do that and support the type of seals provided by the Spares Company. If the thread is still in good condition then the bottom of my gadget can be machined off and its length tuned to trap the screwed lock ring so that it cannot start to move up and down. That way it will hopefully prevent future problems with fretting of the guide and lock ring. I think that I posted some photographs when the batch had been made but I can always produce some more if required.</p><p>I've just had a look on the Club Shop web site and cannot see these items. Either they have sold out or they are not happy with them. If it is the latter then I need to know what the problem is if there is one. If the former then I can get more made as I paid for the CNC program for the first batch, They are made of 7075 so really tough.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 145239, member: 456"] No problem Peter,I am happy to try to explain what it can and cannot do. The device can serve at least two purposes. First I should make it clear that it is not intended to hold a loose guide into a worn hole. For that purpose an oversized lower guide is required but that is simple enough that any reasonably competent machinist could make one. Instead, and assuming that either the original hole and guide are a good fit or an oversized guide had been made and fitted, then my gadget can hold the guide in place either with or without a seal. It does not require the thread to be still usable and from my experience if the guide has been fretting up and down it is likely that the thread is also u/s. It is made long enough, and with its lower end designed in such a way that it can either just hold the guide down or do that and support the type of seals provided by the Spares Company. If the thread is still in good condition then the bottom of my gadget can be machined off and its length tuned to trap the screwed lock ring so that it cannot start to move up and down. That way it will hopefully prevent future problems with fretting of the guide and lock ring. I think that I posted some photographs when the batch had been made but I can always produce some more if required. I've just had a look on the Club Shop web site and cannot see these items. Either they have sold out or they are not happy with them. If it is the latter then I need to know what the problem is if there is one. If the former then I can get more made as I paid for the CNC program for the first batch, They are made of 7075 so really tough. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Removing the inlet valve guide retaining rings.... the hard way
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