Motor size and capacity and performance......
Posted 08 April 2011 - 01:54 AM
Posted 08 April 2011 - 03:46 AM
Posted 08 April 2011 - 04:56 AM
I think a lot of the mass-market mounts used to use plastic reduction gears too that would fall apart after several years.
Which mounts are you talking about? The LXD 75 and CG5 don't. Even if they did, they wouldn't "fall apart" in a few years.
Posted 08 April 2011 - 04:58 AM
Look at the size of the Hale telescope's motors vice the size of its mount.
Posted 08 April 2011 - 08:01 AM
Posted 08 April 2011 - 08:08 AM
Posted 08 April 2011 - 08:21 AM
The torque is magnified many many hundreds of times by the gear box built into many of them, and another 180 to 300 times by the worm gear.
When a motor strains due to out of balance, we hear it, but that doesn't mean that there is a problem. It just means that the motor is working harder than it needs to because of unbalance or drag (or both).
Putting a bigger motor means it would strain less, but it also means that it would draw more power in normal (balanced) operation than would be necessary.
This is not a problem if you run it from a 110 Vac power source, but a very large percentage of people want to run their scopes off of a car battery or power pack. This makes it far more desirable to use as small a motor as necessary for the task, but the compromise is that the operator should keep the balance close to minimize the current draw.
So, there is always a tradeoff. Most of the time, I personally run off of a 3 amp supply and I can run two Go-to mounts with no problem as long as they are not slewing at the same time (GCE and Meade LXD-750 which uses a TINY motor for such a giant mount). So for me, the motors are fine, and I like being able to run the both without needing a bigger power supply.
Everything that engineers do is a compromise. Your requirement for bigger motors may not sit well with the majority of users requirements to keep power consumption as minimal as possible.
Posted 08 April 2011 - 04:12 PM
Posted 08 April 2011 - 04:52 PM
Posted 09 April 2011 - 01:46 AM
Instead of high power you can use torque and time to destroy things.