Re: Diablo Shop 503
Posted: Wed Jan 05, 2022 10:08 am
The Diablo 503 motor is fairly unique being a Hirth 190R. The one thing that makes it unusual is the very small tapered output shaft measuring 24mm at the large end of the taper. The Hirth 54R motors in the Diablo 500 & 502 also have this small tapered output shaft. Common motors of the day had standard 25mm and 30mm tapers. I can only guess that Bolens requested this special taper on both the 54R and 190R so that they could supply a common clutch which is also special which I'll explain later.
Another motor that works in a Diablo without modification is the Hirth 191R. This was a far more common motor used in other sleds. It is basically the same motor except it has a larger standard output shaft. If you use this motor, you need to find a clutch that will fit the larger taper.
For the sake of keeping this topic a reasonable size, I will wait till another day to explain the process of building a motor.
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Another motor that works in a Diablo without modification is the Hirth 191R. This was a far more common motor used in other sleds. It is basically the same motor except it has a larger standard output shaft. If you use this motor, you need to find a clutch that will fit the larger taper.
For the sake of keeping this topic a reasonable size, I will wait till another day to explain the process of building a motor.
.