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Re: Volvo G990 Grader
looks great Stefan :) Looks like I see wear rings and wiper seals , Neoprene I assume ? did you buy them or make them ? I assume the later
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Re: Volvo G990 Grader
Thanks! The material for the wear rings for the piston as well as for the "wipers" is PTFE, the "whiter" looking white. The smaller, slightly transparent wear rings for the piston rod is from polyamide PAS 60. No deeply founded rationale for the choice, but simply what I had available. You assume right: Self made. Not sure the "wiper" will actually wipe (that´s my reason for the quotation marks :rolleyes:). Some of them don´t have the smallest diameter at the very end. Will probably redo them when I get a better turning tool.
Stefan |
Re: Volvo G990 Grader
Stfen I don't know if you come up with a wiper for you cylinders yet but I needed a wiper and a o ring for Liembach cylinder and went to my local place that rebuilds cylinders and the parts guy came up with what I needed for the wiper it was some kind of a semi hard fiber it worked great. Ed
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Re: Volvo G990 Grader
Thanks for the fiber stuff tip. I spent some time with the CAD program (pretty long, actually :o) and came up with the so called "anchorage" for the lift cylinders. The shapeway price is $54 for the stainless version.
https://drive.google.com/uc?id=0B_yT...k9KYTY1RkI4czg https://drive.google.com/uc?id=0B_yT...VM1aEdTRTgwYW8 The cylinder portion, bevel inclusive, is 19 mm (3/4") in diameter by 11 mm long. https://drive.google.com/uc?id=0B_yT...zI0RUwxaHF6cFk https://drive.google.com/uc?id=0B_yT...2NtQ2NydU5DTWs Stefan |
Re: Volvo G990 Grader
i am simply awe struck to see the amount of work and detail that people like you and D8R are putting into your creations. I've always loved rc and dremped of such a detailed model but you guys are putting it down in metal WOW!!! and from scratch. My dream is to do such a thing with an excavator so you all can count on me following your stories. Thanks joe [little giants] for leading me here, an awsome forum no doubt!!!
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Re: Volvo G990 Grader
Stefan, glad to see you are still working on the Volvo. When I look back at all your photos again, and everything you've machined, it really is humbling. I'm not a machinist by trade, but I do try to get by, making parts for my own builds. I have a good night on my mill, now and again, but the parts I make are so simple. If I start feeling good about what I do machine, but then see what you are capable of, well, it sort of just humbles a guy and helps him realize he's got a long way to go, and a lot to learn, before he can think about building something like your grader. Then again, I do not mind feeling humbled in the light of your work, as long as you keep sharing more photos of it, and the process you use to make your parts! Always learn something new each day. :)
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Re: Volvo G990 Grader
Wow, Nathan, you made me speechless for quite a while there :o but thanks a lot for the warming words. I´ll try to do them justice in the future as far as I can. But there are much more skilled people out there, in my case you have to attribute most of the alleged success to expensive machines and good tools. This project is the main reason I bought my mill, the lathe, the welding gear, the soldering equipment, the CAD program, and a lot of other things. I even had to buy a new PC before I could start. And don´t forget I let companies do a good deal of the sheet cutting and foundry details. If I have any particular asset it is probably patience. So, aim high, keep learning and don´t feel too humbled.
Stefan |
Re: Volvo G990 Grader
Stefan, outstanding work you doing, really impressive!
What lathe and mill are you using? |
Re: Volvo G990 Grader
Thanks. Both machines are from Wabeco; one F1210 mill and a D6000 lathe.
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Re: Volvo G990 Grader
Quote:
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Re: Volvo G990 Grader
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Re: Volvo G990 Grader
I agree WOW
greg |
Re: Volvo G990 Grader
Found some more pictures, and, since Nathan amongst others (me included ;)) likes to see the process of making parts, I will not withhold them.
So this is how I aligned the piston rod with its ring head during soldering. Note the small ring of solder paste around the piston end. I found the result to be rather sensitive to the amount of solder paste. Too little, and the solder did not fill the joint properly. Too much, and the solder spreads all around the correct place. What you don´t see in the picture is the small stub (1.5 mm, 1/16" long) at the end of the rod inserted in a corresponding hole in the ring. For maximum strength the fit should be loose to leave a ring shaped gap for the solder to enter. I made the hole about 0.15 mm (6 "thou") oversized. https://drive.google.com/uc?id=0B_yT...jZXYmZtc1E4cjA The next pic I just shot to show how the solder was added. I´m not so good at adding the right amount manually for these delicate jobs, so I bent a piece to fit around the rod and stuck it in the paste. When the water in the paste boils those small pieces of solder tends to move away from the corner, so have some pointed object at hand for pushing them back. https://drive.google.com/uc?id=0B_yT...khlVFA0MG5WY2c https://drive.google.com/uc?id=0B_yT...1hTWlg2dmt1VzQ Stefan |
Re: Volvo G990 Grader
Thanks very much for posting that! You've just taught me how to do something and I appreciate it!
Reg |
Re: Volvo G990 Grader
Thank you for the appreciation, Reg!
Meanwhile I made adapters for the chain wheels. https://drive.google.com/uc?id=0B_yT...TUxVXNaVXM5OE0 https://drive.google.com/uc?id=0B_yT...1VYYzRnYVF0czA Using off-the-shelf clamping sets. https://drive.google.com/uc?id=0B_yT...mF4OVFWVU1aekk Thanx for looking Stefan |
Re: Volvo G990 Grader
This is another amazing excellence scratch build. I know you milled some metal off to make thing perfect but only you would know but then again if you are like me that would drive me craze knowing I didn't fix it. Ed
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Re: Volvo G990 Grader
Crazy build, crazy skills! Keep it up Stefan!
Kalle |
Re: Volvo G990 Grader
Some of the circle guides. Plastic strips will be added later to form the actual glide surfaces.
https://drive.google.com/uc?id=0B_yT...TRVUTZXY3hHQlU https://drive.google.com/uc?id=0B_yT...EsxZ2NiU3pxb0k https://drive.google.com/uc?id=0B_yT...lc1TDhleXZUWTQ https://drive.google.com/uc?id=0B_yT...nRsR2FUZlA2SnM Stefan |
Re: Volvo G990 Grader
Talk about attention to detail...
You actually milled the thickness down to scale (or close enough). Looks like you are building a clock if one didnt know better. |
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