Thank you for the very insightful video Brian. I bought a tiger cub last year and it is fitted with the same Wassel system. The timing feels slightly out and I was scratching my head about how to check the timing, you have given me a good understanding now. Cheers Ian
It sounds like a jet engine, but it’s the fan and combustion roar of my diesel heater, it runs on full blast until the workshop gets to 20 degrees then throttles right down to just a slight background hum, but lovely and warm in winter. Thanks for you positive response, regards Brian
Thanks for explaining this so clearly, way better than the manual. I did noticed you refer to 32 degree BTDC, the 1954 Terrier I am working on says 8 degrees BTDC, how did you know it was 32.
Hi, the 8 degrees you are referring to is the static or retarded position, i.e. when the advance unit is not rotating and is pulled back by the 2 small springs. This fully retarded position is so you can start the bike without it kicking back, once the bike is running the bob weights in the advanced unit are pulled out by centrifugal force to overcome the tension of the 2 small springs and as the revs increase the timing advances to the optimal setting which is 32 degrees btdc for the Cub (as per the manual) There would be no problem setting the ignition timing statically with your 8 degrees with the points just opening, however when fitting electronic ignition you have to set it up on full advance. Many years ago in my teens one of my first bikes was the 150cc Terrier with the points in the distributor and plunger rear suspension.
@@TheCADengineer Thank you for the well explained reply, I now understand the 8 degree reference. Please keep making more video's like these to help and share you're knowledge...Thank you
My advance unit has a slot and pip design. What do I need to do to get the wassel replacement to fit. I'm sure I need to cut a groove on the new part but how do I know where to cut? Thanks
Have you bought the electronic ignition unit yet? If so you may find that the taper on the new unit shorter and may miss the location pin, or if it doesn't try to lever the pin out of the way of taper so it sits just flush, that way it will stay held in the camshaft but not be in in the way. I don't think cutting a grove is the best way as it's a bit of trial and error to get it in the correct position first time and you may get it wrong. However you could mark the front face of the of the case with a sharpie in relation to the pin, fit the unit into the taper but not pulled in to tight; just so its held against enough as not to move, fit the stator and see if you are in range of the vernier slots, if not then move on the taper as required, when you have found the correct position mark the magnet plate in relation to the previous mark you made on the casing, then when the magnet plate is removed, transpose your mark to the taper and cut out the slot with a Dremel or the like.
Thank you for the very insightful video Brian. I bought a tiger cub last year and it is fitted with the same Wassel system. The timing feels slightly out and I was scratching my head about how to check the timing, you have given me a good understanding now. Cheers Ian
Top class instructional video..is that a jet engine in the background ❤
It sounds like a jet engine, but it’s the fan and combustion roar of my diesel heater, it runs on full blast until the workshop gets to 20 degrees then throttles right down to just a slight background hum, but lovely and warm in winter. Thanks for you positive response, regards Brian
Very good exalant
Thanks for explaining this so clearly, way better than the manual. I did noticed you refer to 32 degree BTDC, the 1954 Terrier I am working on says 8 degrees BTDC, how did you know it was 32.
Hi, the 8 degrees you are referring to is the static or retarded position, i.e. when the advance unit is not rotating and is pulled back by the 2 small springs. This fully retarded position is so you can start the bike without it kicking back, once the bike is running the bob weights in the advanced unit are pulled out by centrifugal force to overcome the tension of the 2 small springs and as the revs increase the timing advances to the optimal setting which is 32 degrees btdc for the Cub (as per the manual) There would be no problem setting the ignition timing statically with your 8 degrees with the points just opening, however when fitting electronic ignition you have to set it up on full advance. Many years ago in my teens one of my first bikes was the 150cc Terrier with the points in the distributor and plunger rear suspension.
@@TheCADengineer Thank you for the well explained reply, I now understand the 8 degree reference. Please keep making more video's like these to help and share you're knowledge...Thank you
Very good
My advance unit has a slot and pip design. What do I need to do to get the wassel replacement to fit. I'm sure I need to cut a groove on the new part but how do I know where to cut? Thanks
Have you bought the electronic ignition unit yet? If so you may find that the taper on the new unit shorter and may miss the location pin, or if it doesn't try to lever the pin out of the way of taper so it sits just flush, that way it will stay held in the camshaft but not be in in the way. I don't think cutting a grove is the best way as it's a bit of trial and error to get it in the correct position first time and you may get it wrong. However you could mark the front face of the of the case with a sharpie in relation to the pin, fit the unit into the taper but not pulled in to tight; just so its held against enough as not to move, fit the stator and see if you are in range of the vernier slots, if not then move on the taper as required, when you have found the correct position mark the magnet plate in relation to the previous mark you made on the casing, then when the magnet plate is removed, transpose your mark to the taper and cut out the slot with a Dremel or the like.