Plea for help in answering a question – Seal camshafts
As previous readers of my blog will know I am building 2 Seal engines and am making the Cams at the moment. However, can someone please clear up some confusion for me.
1. Is the cam profiles on the published plan correct?
2. What is your understanding on the firing order for the profiles shown on the plan?
I am aware that the firing order was changed in the Aug 1947 magazine to 1, 3, 4, 2. rather than the order shown under the cams in the photo, however should the profiles also have changed?
I have seen two photo's of completed plans that seem to match the plans profiles, and I want to confirm the firing order. An early reply would be very much appreciated.
Also If anyone has any comment about how the engines should be handed or built so they will power the boat with two contra rotaing props that would also be helpful.
Kind regards
Mike
April 6th, 2009 at 4:17 pm
The answers have been found! I simply rotated the camshaft the wrong way when making the seperate 5 degree cuts. However there is a bonus. I now know how I will make the camshaft for the second engine which will need to run in the opposite direction.
So all in all not the disaster I thought I had. Life seemed brighter all of a sudden.