New posts

Reply to thread

Message

Thank you all very much for the information. The plan I have decided on is to map the profiles of the cam by building a jig I can mount it in and use the followers to achieve a relatively accurate view. Then I'll compare the profile to the maps I have. I'm guessing that I can establish the cam's position in the centre of it's maximum lift and work back from that. Just to flesh out the story of how I came to have no base settings... I was told the engine was running the relatively common SS cam. The engine is a race motor from my Domiracer replica and after a hard couple of seasons of being campaigned with some success was in need of a rebuild. I found the cam nut to be loose as I dismantled the motor and simply removed the Vernier sprocket and chain before the barrels. It was only when I lifted the barrels and discovered the A65 followers I realised I was dealing with an unusual cam. Anyway, the rebuild stalled at this point due to work and a lack of information. It was only when I showed the cam to my friend Pete Lovell that he said he thought it might be a Dickenson A65 or a Triumph profile which were both popular back in the day. I'd like to keep running the cam as it seemed to work quite well when I ran the bike at Cadwell. I'd love to get in contact with Lloyd Dickinson if anyone has any contact info. Of course I'll have a look on the web but I imagine he's retired now.
I have learned an important lesson from this, never assume that you know what's in your engine if you've never looked inside!

<blockquote data-quote="Purity Vendetta" data-source="post: 405292" data-attributes="member: 6623">Thank you all very much for the information. The plan I have decided on is to map the profiles of the cam by building a jig I can mount it in and use the followers to achieve a relatively accurate view. Then I&#039;ll compare the profile to the maps I have. I&#039;m guessing that I can establish the cam&#039;s position in the centre of it&#039;s maximum lift and work back from that. Just to flesh out the story of how I came to have no base settings... I was told the engine was running the relatively common SS cam. The engine is a race motor from my Domiracer replica and after a hard couple of seasons of being campaigned with some success was in need of a rebuild. I found the cam nut to be loose as I dismantled the motor and simply removed the Vernier sprocket and chain before the barrels. It was only when I lifted the barrels and discovered the A65 followers I realised I was dealing with an unusual cam. Anyway, the rebuild stalled at this point due to work and a lack of information. It was only when I showed the cam to my friend Pete Lovell that he said he thought it might be a Dickenson A65 or a Triumph profile which were both popular back in the day. I&#039;d like to keep running the cam as it seemed to work quite well when I ran the bike at Cadwell. I&#039;d love to get in contact with Lloyd Dickinson if anyone has any contact info. Of course I&#039;ll have a look on the web but I imagine he&#039;s retired now.I have learned an important lesson from this, never assume that you know what&#039;s in your engine if you&#039;ve never looked inside! <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" /></blockquote>

[QUOTE="Purity Vendetta, post: 405292, member: 6623"] Thank you all very much for the information. The plan I have decided on is to map the profiles of the cam by building a jig I can mount it in and use the followers to achieve a relatively accurate view. Then I'll compare the profile to the maps I have. I'm guessing that I can establish the cam's position in the centre of it's maximum lift and work back from that. Just to flesh out the story of how I came to have no base settings... I was told the engine was running the relatively common SS cam. The engine is a race motor from my Domiracer replica and after a hard couple of seasons of being campaigned with some success was in need of a rebuild. I found the cam nut to be loose as I dismantled the motor and simply removed the Vernier sprocket and chain before the barrels. It was only when I lifted the barrels and discovered the A65 followers I realised I was dealing with an unusual cam. Anyway, the rebuild stalled at this point due to work and a lack of information. It was only when I showed the cam to my friend Pete Lovell that he said he thought it might be a Dickenson A65 or a Triumph profile which were both popular back in the day. I'd like to keep running the cam as it seemed to work quite well when I ran the bike at Cadwell. I'd love to get in contact with Lloyd Dickinson if anyone has any contact info. Of course I'll have a look on the web but I imagine he's retired now. I have learned an important lesson from this, never assume that you know what's in your engine if you've never looked inside! :) [/QUOTE]