Re: Great Dane excavating co.
 

That diff looks good! Very beefy.lol Do you have a link for where you got that?OH no, what am I asking for:confused:. I promised myself I wouldn't.:cop:lol

Anyway, I'm sorry to hear it isn't going as planned just yet. I know you will get it dialed in shortly!

Re: Great Dane excavating co.
 

Redcat racing,,, something from one of their trucks. I ebayed 1/5 differential. Bunch stock parts, people pulling stock stuff and replacing then ebaying off.

I did look around for needle bearings. Cheaper too!! I did think about a sleeve for correct sizing.

Yup Steve, you might be correct on a traditional drivetrain :).

Hey reg, where is it that you showed building a axle housing? Lot of pages to sort through, and builds,, I might have to go back inside house and aww over some of your past builds again. I like my idea of using the plastic housing I got but, plastic in this things drive? I might not be able to live with that ;) lol!!! Weight isn't carried on that part but it ties in a lot of stuff that does!! Guess I should read over dadsgarage post about shortcuts!!! Don't want to but I guess I better get the calipers and calculator out!! Lol!!!🙀🙏🔩🔫. Don't know if those emojis show up but my wife got some app that changed my phone keyboard!! ( our phones are linked and whatever weird apps she gets I do too!! ,,, time to start another argument and then get punished to garage for the holidays :)!!!

Re: Great Dane excavating co.
 

Haha. I'm on a strict diet of non RC saving at the moment so I'm trying not to be misled by you building something fun...I can't help myself though, it's a disease... Maybe my current idea will also sway your attention and then you will likely be banished to garage for quite some time... We all get feeding off one another and this just gets scary....

I have built diffs a few different ways. The Tigercat and Euclid involved welding together machined parts for the housings and the 850 KW the main housings were machined from a solid chunk. Euc and KW have removable "pumpkins". The skidder has welded centers and the axle tubes come off. This type would probably work and look more realistic for the type of build you are doing. Not only that you won't have days worth of machining to redo if drilling the axle tubes doesn't go well on the first try.:eek:

Re: Great Dane excavating co.
 

Not very informative or a great job even for that matter but it may give you an idea. I didn't have a mill when I started this project so I would have done things a little different that's for sure but it does work OK.

http://rctruckandconstruction.com/sh...light=Tigercat

Re: Great Dane excavating co.
 

is very nice work
the rubber you have use to made the final tires is a Vytaflex® 30?

Re: Great Dane excavating co.
 

I'm not too knowledgable on this stuff but this is what I used

https://www.alumilite.com/PDFs/New%2...lex-Series.pdf

Shore hardness of A40 , guess the hardness scale is the "A" and number is 40 so A40. Said to be similar to wine cork.

Re: Great Dane excavating co.
 

Your concern of differential slip with a two motor axle? As long as you're not running at full power, then there's some give, like a limited slip posi, between the two motors... that's what I've found with either a 4 motor front loader or a 6 motor ADT, half throttle & machine turns like open diffs.

Re: Great Dane excavating co.
 

This just in Mr. Nutters has fallen on hard times and will do anything for food
http://i1335.photobucket.com/albums/...s1hpdgc2f.jpeg
:lol:

Re: Great Dane excavating co.
 

Would like to add to the 2-motors-1-axle discussion, but I cannot find the reference. It was posted by one of our European friends (I think on this forum) explaining that if the two motors are on opposite ends of the same axle, they should be wired in series, and when under load, the motors will create an "electrical differential" by splitting the power proportionally, based on individual motor load and RPM. If using multiple axles with 2 motors each, series wiring on each axle and parallel wiring from axle to axle.

Perhaps someone else read this or the author of the post may see this, so we can find the original discussion.

Ken

Re: Great Dane excavating co.
 

Thanks ken, always appreciate input. How I had originally thought of powering them was independently, two motors, two esc's. I can understand the wireing concept of parallel and that would make sense. I would think that wireing them in series would put more strain on first (in the series) motor. But do understand the concept of "electrical differential". Hummm, I do have six tires of correct size for a future articulated dump truck,,,,,, that would be perfect to implement on.
If I would have made the inner diameter of this trucks tires about 1/2" less I would have had more room for axle/bearings/wheel shafts. But still the compounded length of opposing motors still put it on the limits. If those darn slim bearings weren't so expensive I may have continued on that path. Couple other factors, dadsgarage haul truck has proven to be powered with one motor and that opens up a lot of the design options for axle (again to understand that I'm by far any design engineer) and my limited brain power:). Lol, all those late nights when younger!!! Alcohol kills brain cells?!? Right? Me, I figured alcohol killed off all the weak ones for me so I was good to go!! As I got older that ideal changed!! Lol!! Now if I had a decent tig welder (Christmas present?) or if a awesome builder happen to get a box of aluminum parts with instructions where to weld happen to get a package delivered to his big island home,,,,,,,and quit doing circles with a drift truck,,,,,, I may be set!!!! Lol. If you do happen to find that discussion ken, post a link. I'm sure a few more of us would benifit from that.

Haven't had much time lately and the RC funding is dwindling, have to make things a little smarter, ( not have a handful of new spare parts) as my wife and I are going to be moving. Moving about 100 yards,, trying to purchase my fathers house (old farm property) and the bank just doesn't understand when I tell them I outright own a 349 excavator, d11 dozer, several rigs, and about to acquire a large haul truck. Kind of funny to say to the loan officer as reply to "what assets do you have" lol!!! Yeah that went over like a lead balloon!!!

Re: Great Dane excavating co.
 

Sounds like this guy on the island might live close to me. I've heard of him before and I'm sure he would try to help you. If you get into contact with him could you pass along my email to him. I also need a good builder for some projects...

I'm glad to hear things are progressing next door. Your gonna need that property if my new toy flairs up an old fire in you:cool:.

Re: Great Dane excavating co.
 

I can only guess,,,,, does it have two wheels?? Lol,,, gotta make a good first impression on the neighbors,, make a giant RC construction pit in the front yard and a nice sx track in the backyard!! Ohhh, the neighbors would not be happy to be reliving the yesteryears!!!! 40 min non stop, two to three times a day!! But that was two stroke, now the 4strokes, they are a tad bit quieter. :lol::lol::lol:

That is if that's the new toy. :D

Re: Great Dane excavating co.
 

Haha, 4 stroke MX quieter. Good one.... I'm no longer an environmentalcase so my 4 stroke is going away and will be replaced by a 2 smoker! Dear Santa, I have been so good this year:rolleyes:

Re: Great Dane excavating co.
 

So does that mean you bought that Hayes that you and the wife were driving around?

What ?? you didn't say how many wheels it had! :cop::lol::lol::D

Re: Great Dane excavating co.
 

Reg is getting even bigger on the scale toys!!! Lol!!!


Got a little more done on the axle. A lot of turning time on axle parts. I found a way to bolt them together rather than needing to weld.
http://i1357.photobucket.com/albums/...psexlelrza.jpg
http://i1357.photobucket.com/albums/...pskqzeyed3.jpg
http://i1357.photobucket.com/albums/...pshdcnnqnp.jpg

Needed to make the parts beefy,, I think I'm accomplishing that:). The inner parts of axles still need a radius turned. Saving that till I get to frame parts to find exacts.

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...psb2uqmstg.jpg
And all the tires done:)

Re: Great Dane excavating co.
 

So tires ended up being about 2-1/2" X 9"? That's a bunch of rubber! Really nice job with the casting and using 3D printing for the pattern. Amazing how all the new technology is making more builds possible with really great detail.

Ken

Re: Great Dane excavating co.
 

Haha, no Hayes truck for us although my wife wants one. I think the only way you could get that one from the owner is by buying it from his estate.lol It has a good home now and will be well taken care of until he's gone. Hopefully after that who ever ends up with it will respect the old girl and not turn it into scrap. He did show where the keys are though...:cool:

Rub a Dub! Great job on the tires! I am so impressed with how well they turned out. You continue to be my hero...

Re: Great Dane excavating co.
 

awww thats nice the aluminator is paying captain silicone a compliment LOL
tires look great nice and heavy

Re: Great Dane excavating co.
 

Bahahaha!!!!!!!!!!!!!

Coop like em heavy and soft in the rear...

Re: Great Dane excavating co.
 

Everything looks great so far....like the size of this build !!!
What is the size of the tires??? Two tires have a dull appearance did you sand them to remove the shine?? If so would lightly bead blasting them be an easier way to remove the shine..

Re: Great Dane excavating co.
 

They (shiney ones) are recently made and still have some releas agent on them. The dull ones are older and more true to what they will finally look like.

Re: Great Dane excavating co.
 

Ok got it....hey how big are the tires?

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Tire size = big!!
http://i1357.photobucket.com/albums/...pse3hoqtao.jpg

Lol!! Almost 2 1/2" wide at widest point and just shy of 8 1/2 tall. Had some shrinkage , lol!!

And time for an animal torture pic, I just had to place the "bird" feeder next to window right after I moved the plant stand with the cat bed in it!! Lol!!
http://i1357.photobucket.com/albums/...psiv7atrdc.jpg

I was out in garage and kept hearing a banging, cat chirping,,,, walked right up to the both of them and like I wasn't even there!! He was crying really weird and shaking.

Mission accomplished for him biteing me at 4 in morning!!!

Re: Great Dane excavating co.
 

Maybe he's just missing Mr nutter!

Tires are insane! This will be one great build when your done.

Re: Great Dane excavating co.
 

Tire size does = big, those big tires will really add to the look of that truck when it is finished!! Keep up with the great work, always looking forward to seeing the new pics of this truck build......
KP

Re: Great Dane excavating co.
 

http://i1357.photobucket.com/albums/...psa1tnynch.jpg

Ok not looking forward to this operation. This may be one of the more difficult set ups and operations I have done. I don't have a centering chuck for this rotary table and even if I did I don't have the clearance. But the angles being cut will be parallel with table travel once moved off center. This is to allow the inner rims to be slid onto wheel hub then rotated for bolting two halves of wheel rim to the body of hub. Or should I have said like the 1:1 machines :). Ugg guess it's got to be done :).

Re: Great Dane excavating co.
 

Cooper-that cut seems to be a long way from the table. Hope your mounting is good. I haven't understood what you are doing with the wheels but I thought I would just wait until they were done. I'm sure it will be good. Question-why did you decide to make such a large truck at such a large scale? The reason I ask this is that most mines seem to match truck size with shovel size. I think they like to load with 4-6 buckets per truck. If you load this truck with your standard excavator that will be like "filling a 5-gal. bucket with a teaspoon". Do you have plans for a larger bucket or maybe a larger excavator? Keep the pictures coming.

Re: Great Dane excavating co.
 

there are plans for a large bucket rw just dont know it yet LOL!!!!!!!

Re: Great Dane excavating co.
 

Bolt a piece of metal to your rotary table then mill a circular boss to locate your rims on center. Then you can place the next one on the table and it will be located. You will have to have a nice fit though. Make it big enough to have your studs for the clamps to screw in or double nut by using the slots then a nut to hold plate then long enough to clamp rim down.

Re: Great Dane excavating co.
 

Your work looks great, getting a kick out of squirrel pictures lol! :lol: :D

Re: Great Dane excavating co.
 

Well,,,, I guess I like digging more than driving :lol: but that's the reason for such a large haul truck and small excavator to load. Also it's what I got :). When planning this type of truck I wanted to make the biggest (largest load capacity) I could. In the beginning I had excavator height to limit the build or it would have been a 797. The dumptruck I have is loaded with three scoops. That's too quick for me :). For my enjoyment I like the idea of taking a while to load and short amount of time to haul/dump.
As far as wheels, I'm done with one side for back axle rims, well almost have to cut some more. And the duel hub needs cut to accept rims. They are going to bolt onto wheel hub and when they do they will be clamping the tire. Hopefully no wheel/rim spinning. If it does happen I can mill of some material on inside of two piece rims. I made them a little thick for that reason. (I don't know what to expect with that silicone rubber in the long run. Hopefully by weekend I'll have one side done to show. Or by weekend I'll have more spare future build parts:D

Re: Great Dane excavating co.
 

I cant wait to see the new excavator to match this awesome truck....

it has to be a large front shovel , but seriously I think the tyres came out fantastic.

cheers andy

Re: Great Dane excavating co.
 

Lol!! Thanks, I'm just as much a nut as that little tree rat in the pic:lol: more nuttier than an outhouse at a peanut farm :jaw::jaw::jaw:

Re: Great Dane excavating co.
 

Thanks Steve, I was thinking other end, was going to make a piece to chuck up in the mill and then slide into part. I guess what you said but up side down:lol: I think I'll go with what you suggest. I've been wanting to make a plate with a few holes machined into it that bolts to rotary table. Having something like that would give me more future clamping ability. I was planning on clamping part around bottom ring and also having a shaft (long bolt) up through center with plate to clamp from top also. Probably have to recess it so milling tools have clearance. Was wanting to use something around 3/16 for mill to get a small as possible inside radius on cuts. Plus the endmill I want to use has shaft same diameter as cutting blades. Can run right up along part without cutting too deep. Haven't had a mill crash in long time:eek: and don't want one anytime soon. At least this operation will not be 20min set up 1 min cutting time. And one of those parts that now I need to make more parts to cut the part!!!!

Re: Great Dane excavating co.
 

"And one of those parts that now I need to make more parts to cut the part!!!!"

Welcome to the world of machining son :D

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http://i1357.photobucket.com/albums/...pszpoejvyx.png

This may give you a better idea of what I'm trying to do. The bolt flange allows the rim to rotate past mounting ears then rotated a bit to line up bolt holes.

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http://i1357.photobucket.com/albums/...psvkz4ebfk.jpg

Well this is what a couple hours in garage netted me tonight. Had to make new t slot nuts for bolts I have. (Metric/standard!! I've got all the wrong things I need!! One of these days I'll actually have what i when I need it!!). Still have to make a block for top that is recessed. That way I'll get the mill spindle clearance I need for a small endmill. It's going to bolt down from top, alignment boss bolted to plate, plate bolted to table. And also for security I will bolt down bottom ring to plate also. The bolt in center will be enough for light cuts I'm doing but why skimp on the tooling department!!! Lol!! Another tool/jig to add to pile. (That I will probably never have a use for again!!!

Re: Great Dane excavating co.
 

Cooper-that picture helps a bit but still confusing to me but no worries, I'm old!! Your fixture looks good but I would be careful with the aluminum threads. In my experience they will eventually fail. This probably doesn't help your feelings but I have at least a dozen fixtures that I used only one time. Seems like we spend more time making fixtures than actually making parts but I think that is part of the game. I'm enjoying watching..

Re: Great Dane excavating co.
 

Yeah, I don't like the idea of alum threading for milling jigs but one offs don't bother me. And I'm sure I could get a couple dozen jobs out of this before any worries. And I have the aluminum stock on hand, no steel around to use. But,,,, I have been wanting to make a bolting plate for the rotary table. If I eventually do it will be made out of steel, something that I can use for whatever other projects the future holds. :)

Another thing on the list of toys and items I am going to steal from my fellow Canadian islander if I ever get out there, that steel fixture he has on his rotary table :lol: