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Construction Equipment If it digs, pushes, hauls dirt "off road" post it here. |
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JD 650H build
Well, I'm going to try to RC a diecast JD 650H dozer. My plan is to use Futaba 9157 (425 oz in) servos for the tracks and also the blade lift. I haven't found a clever way to angle the blade yet, so I might just skip that. I'm trying to keep this as stock as possible and retain as much weight as I can. Batteries are going to be fun to find a place for them, hoping I can do at least 4 sub C's at 5000 mah so I'll have a decent run time per charge.
The Box and unpacking: Let's tear down: (yup, kinda a messy work bench, but it gets the job done... lol) A couple of splined hubs from servo city worked perfect for mounting the sprockets to the servos. They just needed a 3/16 spacer glued between them to space the sprockets correctly for the tracks. Track servo's installed: Top view bottom view, need an aluminum plate to mount the servo's Back side, servo's don't stick out too far, I plan on mounting the hitch back on also Starting on the blade lift servo mounting I'll need a mill to make the mounting bracket and remove some of the metal to make room for the servos , so I got one of these. Wow, this thing is freakin' awesome Thanks for looking John Last edited by JohnStilwell; 03-08-2014 at 08:30 PM. |
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Re: JD 650H build
Very nice John. Your build gives me a bit of confidence in that I even may be able to do one as well.
Michael |
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Re: JD 650H build
Looking good.........but I wish you luck with the tracks, they are brittle and junk. Look great on the shelf but they won't hold up to movement. I'm looking for another solution for the tracks and drive system with this model, I've got all functions operating and my milling man is trying to figure the drive system and tracks.
Ben
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Re: JD 650H build
Well, I hope the tracks will stay together... I've come this far
Here are some comparison pics with the Bruder D4. As you can see the outside to outside track width is about the same, tracks themselves are about the same width, the 650 H has a slightly longer track length and a wider blade. Made some more progress, got the block milled to mount the servos, the blade lift working and now I sorting out where to put the electronics. These pc boards are from the servos, I had to take them apart to convert the drive servos to 360d rotation anyway, so I plan on mounting them below and inside the cab. Yup, the third one is for the blade lift servo, figured I'd do that one too. I used 2.2k resistors after removing the 5k pots which made them smaller footprint and easier to mount. I had to do the blade servo too, I messed up the pot taking this one apart, thankfully I had a spare one from the drive servos to replace it with. I'll line up 4 C cells in the lower half and put the power switch and charge jack just inside the cab door on the right side. John Last edited by JohnStilwell; 03-15-2014 at 06:18 PM. |
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Re: JD 650H build
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Cheer's, Neil. |
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Re: JD 650H build
Always liked those Deere Precision series dozers! I'm looking forward to seeing the finished model. So far, so good! I didn't think it would be possible to fit all the electronics inside one of these to make it a functional RC model, but you look like you've got it figured out. Are those the servo circuit boards I'm seeing on the cab floor?
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Nathan |
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Re: JD 650H build
Really cool!! Really small too!!!
http://www.littlemachineshop.com/pro...ory=1963256900 Here is a link to little machine shop, I have that same mill. This is a bolt on spindle lock. I originally purchased a quick change tool ER 40 or something like that size for the r8 spindle. I eventually changed and bought all r8 collets off eBay and now just use a dewalt impact driver to change r8 collets. I can change collets in about ten seconds. Just put a pin in the spindle lock and attach impact wrench to draw bar. Quick simple and effective. Plus it puts the tool closer to spindle increasing mill capacity and rigidity. It took me about an evening of tearing down and cleaning up the ways. For me it has been a perfect little mill.
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Re: JD 650H build
Oh and one more important thing, the spindle was getting really really hot. Even after proper spindle bearing break in. Found out that the spindle bearings were loaded too much. Took apart, added some proper grease (not just any but specific bearing grease) and reset the bearing load. Still runs hot on high load side milling but sounds and runs sooooo much smoother. Kind of a p.i.t.a. But a necessary step to get life and good results out of it.
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Re: JD 650H build
Espreefan:
Yes, those are the servo boards. You can get everything inside and keep the Cab interior stock too, but the only blade funtion I have is lifting. I couldn't figure out how to do the blade angle and tilt without seriously altering the stock look. Cooper: I looked into that Mill as well, but decided on the Grizzly. I plan on an 7x9 or 8x16 lathe in the future, but that's after I either CNC or DRO the mill. I'll keep an eye on the bearings, thanks for the heads up. Been running great so far. John |
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Re: JD 650H build
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I think it may be Neil.
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You are an inspiration to many To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. , you will not be forgotten. R.I.P. FGD Work Hard, Play Hard! Never Forget- 343 |
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Re: JD 650H build
#25 is the best size but they no make in K series . milling in 1 piece is best option for 1 or 2 units next would be cast but need to make many
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Re: JD 650H build
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Always wasting money, as the wife says. To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. |
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Re: JD 650H build
Yes, BF20 is the common name for them, I believe it's based on a 20" X axis. I have read a lot on his site G0704 and watched a lot of Hoss' youtube videos. Yes, Hoss is the "Mad Scientist" of the small mills
Lot's of good ideas, but I haven't the funds currently to pursue adding features to my mill yet. I'm currently awaiting another custom dump box from "the master" Reg for my Mack build. John |
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Re: JD 650H build
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Maybe there's some available? Cheer's, Neil. |
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Re: JD 650H build
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RIP FreddyGearDrive 2-12-59/12-19-11 To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. |
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Re: JD 650H build
PHOOOEY on them
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Re: JD 650H build
I love it when folk spend more on the tools than the model....nice work though, sometimes its the only way to go!
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Re: JD 650H build
Cool build and nice lathe!
Very nice and heavy dozer.
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Scott "No load is too Small" |
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