Is this true?

[ivtec]

Hi guys does this hold any water?
Plastic or Steel Gearing?

[Jim-S]

I have seen that even some cordless drill motors have "plastic gears" so ya it could be true. I had a cordless with plastic gears, the bushings or bearings wore out first and not the gears. I would think that the plastic gears are more forgiving "able to flex a little" as the steel gears are brittle can't take a lot of stress.
But of course that is not true for everything such as drag racing, I can't imagine a dragster with plastic gears.

Just thinking out loud.
Jim

[ivtec]

Originally Posted by Jim-S

I have seen that even some cordless drill motors have "plastic gears" so ya it could be true. I had a cordless with plastic gears, the bushings or bearings wore out first and not the gears. I would think that the plastic gears are more forgiving "able to flex a little" as the steel gears are brittle can't take a lot of stress.
But of course that is not true for everything such as drag racing, I can't imagine a dragster with plastic gears.

Just thinking out loud.
Jim

I have the Sg9120 and so far so good,but i know that plastic gear in Antenna Rotors and mechanical Paper cutters and other types of plastic gear gets wore off,

[Rainman]

It all depends on the type of plastic they are using if it some of the new composite materials then yes I would agreed but some of the plastic gears i have seen aren't that great have a tendency to strip the teeth off.

[jedrive]

Thank you RAINMAN.

[RDosetareh]

Amature Propaganda

I'm actually very surprised such an armature propaganda was was published. Up until I saw this published months ago, right after we improved the SG6000 and came up with the SG9120 with steel gear, I had a great deal of respect for them and their supposed knowledge, but now, it kind of makes me think twice, doubt and be a bit hesitant about their products and their claim and credibility about their products. I also think it’s very unattractive & childish to ciriticize another superior product just to try and get a false edge.

Well, I was going to ignore the matter until it was brought up in this thread. The fact of the matter is that while it is true that steel gears have backlash issues, this problem was taken care of by introducing and using alloy instead of all steel in order to keep the robust & heavy duty factor. Alloy will allow for much better durability and dependability than engineered plastic or pure steel that the author claims was originally built in DiSEqC motors.

There should be a correction made to the article. Besides the SG9120 and SG9120B, there are two additional manufacturers that use metal gears, and not one. Stab from Italy and Powertech. Powertech motors are known for reliability, durability, and power due to the main metal gear, as are the SG9120 and SG9120B. Besides these three different motors, no other manufacturer has ever used metal gear. They have always used plastic gears. Any product on the market with all metal gear is usually much more expensive than anything mechanical with plastic gear. This is common knowledge and readily available for research.

As far as mechanical stop is concerned, if a product is reliable, then a mechanical stop should not be of a concern. Only cheaper & unreliable products must provide additional assurance and backup due to product failure.

[Rainman]

Very well put Robby.