rocwandrer
100 W
I have a special (personal, not professional) project I need help with. I need a DC motor capable of very high torque for short bursts.
Ideally, it should be capable of at least 6000w output for 3 seconds at perhaps 70% of no load speed. More watts would be much better.
Duty cycle under these conditions must be more than 10%, but higher (up to about 50%) is better. It will only run for about 3-6 minutes at a time before a complete cooldown.
Efficiency is not as important as cost, but higher efficiency is a bonus.
Weight is not as important as cost, but lower weight is a bonus.
I am thinking a brushed motor on a starter motor relay to save the cost of any sort of controller.
If there were an easy way to make it have just a touch of soft start, that would be awesome. Otherwise, I'll have to build a mechanical soft start (rubber pucks?).
I'd love to get 50 hours of operation between servicings (brushes and bearings?) If the service is easy and inexpensive I could live with less. Starting out with used motors would be fine if there is a good source.
This place has never failed me yet. So. Ideas?
Richard
Ideally, it should be capable of at least 6000w output for 3 seconds at perhaps 70% of no load speed. More watts would be much better.
Duty cycle under these conditions must be more than 10%, but higher (up to about 50%) is better. It will only run for about 3-6 minutes at a time before a complete cooldown.
Efficiency is not as important as cost, but higher efficiency is a bonus.
Weight is not as important as cost, but lower weight is a bonus.
I am thinking a brushed motor on a starter motor relay to save the cost of any sort of controller.
If there were an easy way to make it have just a touch of soft start, that would be awesome. Otherwise, I'll have to build a mechanical soft start (rubber pucks?).
I'd love to get 50 hours of operation between servicings (brushes and bearings?) If the service is easy and inexpensive I could live with less. Starting out with used motors would be fine if there is a good source.
This place has never failed me yet. So. Ideas?
Richard