Unfortunately, sometimes a bad valve calibration reflect poorly on the brand. Valve tuning is another subject all-together. This results in a system with less lag in the computation of blade position and this enables it to give correction at 100 times per second versus most other system that correct 10 times/sec. It measures slope, pitch, yaw, roll and acceleration in every direction. The 3DMC2 uses a solid-state inertial sensor mounted where other systems mount a single or dual slope sensor. Topcon's 3DMC2 is fundamentally different from other grade control systems, -including Topcon's own. We done some fine grading with dozers, but it's all site work and we have the mmGPS system that seems to work just fine. I like Topcon's 3D MC^2, but it only increases the speed of dozer work, most of our fine grading is done with graders. The fewer components you need, the less likely the system will fail. Taking out the factors of having a cross-slope sensor, rotation sensor, and mainfall sensor is obvious. The advantage still going to Trimble with their dual antenna setup. Trimble allows the operator to perform a "layered" lift or offset, where only the road prism is affected, the ditches, slopes, and catches remain the same, allowing the operator to grade the entire width of the project, no matter what layer of material they are working as opposed to Topcon's limited vertical offset.Īs far as radios are concerned, the 900mhz Trimble setup does lack for distance, but can be easily compensated for with repeaters (which are needed with the 450mhz range PDL radios we use with our Topcon setups anyways).
I am able to build highly accurate road models in a fraction of the time and I can also build ONE model for an entire project and never have to worry about different layer depths. After being introduced to Terramodel and Site Vision Office I have seen the light. I've been painstakingly building 3D alignments with 3D Office for our Topcon systems over the past few years.
#What should edge distance in terramodel be software
The software alone is where Trimble has the advantage. I was fairly pleased with Topcon until last year we picked up a county road project and decided it was time to give Trimble a shot.Īs far as road grading is concerned, Trimble out performs Topcon hands down. We have it on 3 graders and two D6R dozers. I have been working with Topcon 3D MC since 2005.
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