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Forum: Construction Equipment 09-18-2022, 08:30 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

I drew out the path and also where it could be getting lost. The guide groove is inside the bore which is 4.5mm. Difficult to even see if the contours are well formed by lost wax casting.
...
Forum: Construction Equipment 09-14-2022, 10:08 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

Thanks Egronvold.

Time to step away from the ZX and tackle the barrier lift mechanism. The full scale looks to operate with a bi-stable latch which allows the jaws to engage every second plunge....
Forum: Metal forming & tools 09-08-2022, 07:52 PM
Replies: 4
Views: 949
Posted By Blender
Re: Micro TIG welders

They recently went up in price a bit so a system is 3-5k or so. Lampert is more.


That's the model I was planning on. It was out of stock for most of the year. With the recent price increases I...
Forum: Metal forming & tools 09-07-2022, 11:28 PM
Replies: 4
Views: 949
Posted By Blender
Re: Micro TIG welders

Pulled the trigger on a sunstone. The Lampert is too expensive and hard to acquire.

The reps there were responsive and future support should be good. They recommended the microscope system which...
Forum: Metal forming & tools 08-28-2022, 12:03 PM
Replies: 4
Views: 949
Posted By Blender
Post Micro TIG welders

Several of you guys appear to be using these kinds of "jewelry" welders. The results are fantastic. Looking for info and experiences. I had a little info exchange with a US brand, but our model...
Forum: Construction Equipment 08-07-2022, 01:55 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

Thanks for the kind words.

I started by looking for something off the shelf. Best option I saw was for drone/multicopter. Those were not quite right, but workable.
Forum: Construction Equipment 08-05-2022, 10:09 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

Decided I'm going to rewind the GB2208 gimbal motor for use on the slew. I've done that a few times before on RC crawlers. Would like to increase the current quite a bit too. Lots of trial and error...
Forum: Construction Equipment 07-24-2022, 09:29 PM
Replies: 18
Views: 2,331
Posted By Blender
Re: Toprace211/Huina 1550 upgrade

First pic being a box of parts :lol:

Now that you've handled the slew bearing mounts, what are the other areas that need to be improved?
Forum: Construction Equipment 07-13-2022, 11:30 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

experimented with a gimbal motor for the slew. It's a 2208 outrunner 127kV so it's super slow. Paired it with a 62:1 gearbox. It's ultra quiet and smooth, but still cogs a little at startup so it...
Forum: Construction Equipment 07-12-2022, 11:57 PM
Replies: 87
Views: 18,406
Posted By Blender
Re: Build an Excavator from Scratch

Looks great.

Will it be painted in a specific brand's colors or left in bare metal?
Forum: Construction Equipment 06-14-2022, 12:55 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

They're mid-priced. All the parts in the photo were $71 shipped. Enough to build 2 with some spares.
Forum: Construction Equipment 06-12-2022, 01:49 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

Trying the drive with side sliders is rough. Instead there are three flight modes:

1.) "Default" allows fully control of the machine. SAE excavator controls on the sticks and the tracks are driven...
Forum: Construction Equipment 06-12-2022, 01:34 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

I really struggled with the hose installation. Flat nose pliers would mangle the hose, and heat would melt the end 9 times out of 10. The German forums' talked about "hose pliers" which sent me on a...
Forum: Electronics tech 06-12-2022, 12:54 PM
Replies: 10
Views: 4,544
Posted By Blender
Re: Telemetry data of hydraulic pressure

Got the machine up and running to give this a proper test. Appears to work and is within 10% of an analog gauge. I still need to experiment with location to tap into the pressure side. Currently I'm...
Forum: Construction Equipment 05-13-2022, 04:52 PM
Replies: 87
Views: 18,406
Posted By Blender
Re: Build an Excavator from Scratch

This is looking great. The beauty panels pulled it all together so well. The metalwork shows your high standards.

The hard pipes on the boom are a great detail.
Forum: Construction Equipment 05-13-2022, 04:42 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

https://i.ibb.co/0CxNFRw/model-19.jpg
https://i.ibb.co/PW88PZg/model-22.jpg
https://i.ibb.co/RC85ydn/model-18.jpg
https://i.ibb.co/TRx5HqT/model-23.jpg...
Forum: Construction Equipment 05-03-2022, 07:42 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

Still doing a ton of painting sanding polishing. Connected the drive and slew motors to try them out, but otherwise no real assembly progress. I did decide to add hydraulic quick disconnects off the...
Forum: Electronics tech 05-01-2022, 07:02 PM
Replies: 10
Views: 4,544
Posted By Blender
Re: Telemetry data of hydraulic pressure

Trilliwilli mentioned LUA in passing. Been reading up on it. It's a programming language some TX can run. Just a day ago I was dreading having to write my own app to do some simple math. As it turns...
Forum: Construction Equipment 04-26-2022, 10:53 PM
Replies: 17
Views: 3,945
Posted By Blender
Re: Metal Hobi MH-245 kit as Hitachi ZX245 excavator

Chassis is painted and assembled. No issues to report, but i did fish a little piece of grit out of the tower bearing. Now it's silky smooth. Decided to leave the tracks raw black so they don't gum...
Forum: Electronics tech 04-19-2022, 10:22 PM
Replies: 10
Views: 4,544
Posted By Blender
Re: Telemetry data of hydraulic pressure

The arduino method is looking appealing. Could also be used to adjust/calibrate the output if needed.

As far as boost converters, Dimension Engineering...
Forum: Construction Equipment 04-19-2022, 10:01 PM
Replies: 17
Views: 3,945
Posted By Blender
Metal Hobi MH-245 kit as Hitachi ZX245 excavator

Here's a build thread of the Metal Hobi MH245 excavator kit. It's the 3 valve mono boom in 1:14.5. Had the 7 valve split boom with plow been available that would have been my choice. This is my first...
Forum: Electronics tech 04-17-2022, 10:52 PM
Replies: 10
Views: 4,544
Posted By Blender
Re: Telemetry data of hydraulic pressure

Your DC-16 is absolutely beautiful. The 3D sticks you've added look like a factory option. Very clean integration. Been casually looking for a used Jeti. They're pretty rare in the US and when they...
Forum: Electronics tech 04-16-2022, 02:30 PM
Replies: 10
Views: 4,544
Posted By Blender
Re: Telemetry data of hydraulic pressure

@trilliwilli:

Thanks for the link to the Brixl sensor. Ofcourse the Germans already have such a thing! I dug through their transmitter manual and it states there are transmitter settings for...
Forum: Electronics tech 04-15-2022, 09:14 PM
Replies: 10
Views: 4,544
Posted By Blender
Telemetry data of hydraulic pressure

Been window shopping for a fresh radio and see Jeti has a ton of telemetry options. Battery voltage/current/capacity are straightforward as are motor RPM and temp since the airplane guys all use such...
Forum: General Discussion 03-23-2022, 04:44 PM
Replies: 20
Views: 5,179
Posted By Blender
Re: What happened?

Total relief this place survived
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