January 25, 201214 yr Hi, I've recently got a Bultaco 198A. I believe the ignition timing is between 2.8mm and 3.0mm BTDC. I haven't yet got a TDC Tool, but I guess I'll need one. - are the standard tools OK, or do I really need a micrometer version ? But I was wondering... - what's this measurement in terms of degrees BTDC ? - I can't imagine being able to measure 2.8mm to 3mm with any great accuracy, so isn't it easier/better to measure in degrees ? Tony P
January 26, 201214 yr Hi, I've recently got a Bultaco 198A. I believe the ignition timing is between 2.8mm and 3.0mm BTDC. I haven't yet got a TDC Tool, but I guess I'll need one. - are the standard tools OK, or do I really need a micrometer version ? But I was wondering... - what's this measurement in terms of degrees BTDC ? - I can't imagine being able to measure 2.8mm to 3mm with any great accuracy, so isn't it easier/better to measure in degrees ? Tony P No, if you do not have the good tool to begin with, you will never align a degree wheel. A vernier type works, dut a dial indicator is better!
January 26, 201214 yr No, if you do not have the good tool to begin with, you will never align a degree wheel. A vernier type works, dut a dial indicator is better! As above, its worth investing in a good quality dial gauge
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