Bell 50 ton Dumper - ADT

[Azonic]

Originally Posted by elliot330

I initially went with the Tekin FSR but it kept trippin out under load, so I then fitted a Holmes Hobbies TorqueMaster BR-XL - it can handle the 12volt battery and is tunable. Really holding up well, until I got it wet! It doesn't like the water at all.

Servonaut S20!

[elliot330]

Originally Posted by Azonic

Servonaut S20!

Yep, that was the first to be fitted, but I removed it straight away. I didn't like how the filters in the esc remove the direct drive. It was fine on the flat ground, but whenever I was offroad I didn't like it. But to be fair I came from a scale crawling background and prefer the direct response from a rock crawling esc. I guess its just personal preference.

[Azonic]

Originally Posted by elliot330

Yep, that was the first to be fitted, but I removed it straight away. I didn't like how the filters in the esc remove the direct drive. It was fine on the flat ground, but whenever I was offroad I didn't like it. But to be fair I came from a scale crawling background and prefer the direct response from a rock crawling esc. I guess its just personal preference.

Ok, maybe your right about that, im from the scale crawler scene so i know what you talking about, but i kinda have got used to it even tho in some situation its hard to keep control of the trottle when climbing and such.

Yeah it sure is.

[elliot330]

Originally Posted by Azonic

i kinda have got used to it even tho in some situation its hard to keep control of the trottle when climbing and such.

Yes, that's the same problem i had.. when I was trying to drive over a rock or boulder, I had to apply more and more power, but once over the obstical the dumper suddenly shot forward, even though I had let off the throttle?? I spoke with Jorg at servonaut and he explained that the "filters" in the S20 were the result of this.. the esc is very clever and filters/smooths out the input from the driver giving a smoother drive, great for lorries and trucks on the road, but I just couldn't get to grips with it off road. However, all that said, I fitted it in a Wedico 966 and it was completely different, maybe its the difference between mechanical and electrical drive

[apfubar]

Originally Posted by elliot330

Yes, that's the same problem i had.. when I was trying to drive over a rock or boulder, I had to apply more and more power, but once over the obstical the dumper suddenly shot forward, even though I had let off the throttle?? I spoke with Jorg at servonaut and he explained that the "filters" in the S20 were the result of this.. the esc is very clever and filters/smooths out the input from the driver giving a smoother drive, great for lorries and trucks on the road, but I just couldn't get to grips with it off road. However, all that said, I fitted it in a Wedico 966 and it was completely different, maybe its the difference between mechanical and electrical drive

It could be that the 966 is geared down so much in 1st (so they don't blow the motor) that it is very sensitive to voltage changes, where as the Bell is using the torque of the motors rather than rpm.

Just a thought, any idea if the top speeds are comparable between the two (in any of the three wedico gears)?

Cheers,
AP