How are cranking RPM's of a starter measured? By cutting off fuel supply, cranking the engine and measuring the RPM? Or during a normal start? I would have done it while cutting off fuel supply.
On this website: The Garage - For RX-8 specialist services and professional rotary engine help | Rotary Revs
I read that the N3H1 starter achieves 220 to 250rpm, and the uprated 2kw starter up to 290rpm. Also, the engine needs a minimum of 250rpm to start, or as I understand it, to combust and provide enough power to start up completely.
Now I am ordering parts, and I want to know whether my starter is shot and is one of the causes of my poor starts, since the engine started this winter to accelerate very slowly. In that case I would just buy the 2kw starter and see.
According to this topic: http://ift.tt/2itHja1
I take it that cranking rpm is measured with the fuel supply off, which gives us a constant and clear reading, not biased by any combustion inside the engine. But I just want to check to be sure. I will measure the cranking speed of my RX8 while I cut off fuel supply and report back.
On this website: The Garage - For RX-8 specialist services and professional rotary engine help | Rotary Revs
I read that the N3H1 starter achieves 220 to 250rpm, and the uprated 2kw starter up to 290rpm. Also, the engine needs a minimum of 250rpm to start, or as I understand it, to combust and provide enough power to start up completely.
Now I am ordering parts, and I want to know whether my starter is shot and is one of the causes of my poor starts, since the engine started this winter to accelerate very slowly. In that case I would just buy the 2kw starter and see.
According to this topic: http://ift.tt/2itHja1
I take it that cranking rpm is measured with the fuel supply off, which gives us a constant and clear reading, not biased by any combustion inside the engine. But I just want to check to be sure. I will measure the cranking speed of my RX8 while I cut off fuel supply and report back.
How do I measure cranking RPM's?
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