The second camshaft for a pair of Seal 15cc petrol engines to a design by Edgar T Westbury. The two camshafts that have been made are turned differently to allow (hopefully) the engines to turn contra rotating propellers.
The answer to a problem of the wrong cam profile fora Seal engine turn out in fact to be a bonus! Since it is the pattern required to run the engine in reverse as it were for powering a contra running engine in a twin engine power boat.
A question is asked to clear up some confusion over Cam profiles and firing order. Also how best to build a pair to power contra rotating propellers.
Three camshaft blanks are being made before profiling the cams takes place. One is being made from steel that will then be hardened as an experiement. They are destined to be used in two Seal engines being built as a twin petrol instalation in a model calssic boat. Follow the build here.
Work starts on the Seal camshaft at last. Even though this one is a practice to pove the system of turning. Another two will have to be made for the two engines proper.
Today’s session started later than usual and was more of a potter around cleaning up after the last few days work. I then spent time sorting out the filing cabinet fitted in the new frame between the Myford Lathe and the Milling machine. Quite a relaxing session really and perhaps that’s why about 1200 [...]
article model engineer by Edgar T Westbury regarding the building of his Seal 15cc petrol engine
|
|
Aluminium Bar remnant Lathe mill Model Engine 19Kg £11.85 |
|
|
RDGTOOLS 2MT REVOLVING LATHE CENTRE FOR MYFORD LATHE £14.50 |
|
|
Myford ML7 Headstock Belt £5.30 |
|
|
2 Cee spanners for the myford Super 7 or ML7R lathe £13.50 |
|
|
Myford Super 7 motorising assembly with clutch £275.00 |
|
|
Myford Super 7 30 20 t Tumbler sleeve gear £24.00 |
|
|
Original Myford Super 7 Lathe Top Cross Slide £175.00 |
|
|
Myford Super 7 Lathe Motor Belt £5.30 |
|
|
Myford ML7 Lathe Tail Stock Tailstock £95.00 |
|
|
Myford ML 7 Lathe Motor Belt £5.30 |
|
|
Myford Super 7 Headstock Belt £5.30 |
|
|
Myford Super 7 Lathe with many accessories £1,040.51 |
|
|
Myford Lathe long bed £1,850.00 |
|
|
Myford gearbox Myford lathe quick change gear box £550.00 |
|
|
Moore Wright 0 1 Outside Micrometer Lathe Myford £4.99 |
|
|
RDGTOOLS LATHE DRILL TAPPING ATTACHMENT EMCO LATHE £14.95 |
|
|
5 of 1 2 Clarkson milling cutters Myford lathe steam £4.99 |
|
|
MYFORD LATHE COVERML7 LIVE STEAM USE £10.00 |
|
|
Myford 1A Hydraulic Copying Lathe Manuals £22.99 |
|
|
Myford Longbed Woodturning Lathe £200.00 |