990 cat loader
just a peak of what I've been designing amongst other things :rolleyes:
borrowed pic from machinery trader http://i830.photobucket.com/albums/z...der/990cat.jpg http://i830.photobucket.com/albums/z...r/PIC_1618.jpg http://i830.photobucket.com/albums/z...r/PIC_1621.jpg http://i830.photobucket.com/albums/z...r/PIC_1622.jpg http://i830.photobucket.com/albums/z...r/PIC_1630.jpg http://i830.photobucket.com/albums/z...r/PIC_1624.jpg http://i830.photobucket.com/albums/z...PIC_1623-1.jpg http://i830.photobucket.com/albums/z...r/PIC_1628.jpg thanks for lookin |
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WOW! That really came out nice!Although! I see you & Travis are useing the same wimpy axles. I gotta have a front row seat for the vid,Can't wait to see this monster get a good full bucket. Then watch the front of the machine go to the ground when you try to lift it.:eek::eek:
Gotta get one in there when I can.;) FGD |
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what scale is this?
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Oh, freddy, bench test failed by IHB standards Axle redesign in order :rolleyes: |
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Nice parts you made, never liked a Cat but i like your work so far! :)
How much does it weigh as of now? |
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4 wheel motors. It'll leave the rear body open for hyd system & electronics. Not to mention much more power than you'll ever get from a motor/trans/axles and alot less mechanics involve.
Review Elliot's & Kalle's Fumotec adt builds for axle design & choice of motors. Looking fantastic thus far, this one could definitely be a money maker for you... providing you alter it a bit so it isn't a Cat, just looks similar. ;) |
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Looks great Steve! Ill take one:D:D
Brian |
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if you decide to make one to sell, let me know. I will buy one for sure
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Steve, I need an order form, better start making duplicate parts.
Ben |
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Joe you have no idea of what he is using.:rolleyes: Travis |
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I've given this issue some thought :confused: tha housings definately need some up grade :rolleyes: it takes over the weight of my pans to bow these housings which is flatening the mammoth tires unfilled . 1 major faill point is the axle extension at the screw area not much meat for plastic :rolleyes: and they just look to spinly not big loader like so like my mack , I'll be making new housings ;) steel I think will be overkill . There is plenty of room to fit everything needed ;) + an operator in the cab .
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You're wrong on every point Travy.
My Komatsu is 4yrs old, I have done zero wrenching on it and it has moved several cu/yds of dirt in that time. That wdc I had with its overly complicated drivetrain, I had to split it twice to replace driveshafts. And those wdc ball shafts are a hellva alot more stout than the Tamiya dog bones/cups you're using in your loader. I guess your idea will probably be fine for you b/c you only use your stuff sparingly in rubber dirt at a few shows a yr. If Stevie has any plans to market this loader, then he better do it right or expect alot of negative feedback. Motor/trans/driveshafts/axles = problems ...especially if this loader has any significant weight to it. |
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:rolleyes: 1 power source 4 motors the motor that loses traction will spin and the others will stall out.
I have ran Izzys loader as well as many others with no problems and yes we do play with it in his yard which is a loamy sand a very heavy combination. Maybe you should scratch build one and show us how its done. http://www.youtube.com/watch?v=rrPnFYrQjo0 http://www.youtube.com/watch?v=h0Yt6K45YNE http://www.youtube.com/watch?v=AfYlIcURP0U http://www.youtube.com/watch?v=ETjkHdpHFY8 Travis |
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for sure it should be 4 drive motors. Alot simpler and smoother running with the weight of the machine. You would not need 4 seperate esc. They are alot out there the can run multi brushed motors. The Mamba max pro would be perfect.
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Travis |
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At low throttle, yes the motor with the least traction will spin alone. At greater than half throttle all four motors go no matter which one has less traction. At full throttle the power is undoubtly equal to all of them.
So you play in the dirt occassionaly... have you even worn the paint off the tracks yet, much less the bucket? ...8 months later What does Izzy figure he has for hrs on his loader in the dirt? I ran my wdc more than 250hrs for sure the 1st two yrs I had it and the Stahl would undoubtably get a 100hrs each yr, the front aluminum edge of the bucket is razor thin, I could probably shave with it, I'm gonna need a new bucket soon. I don't have to scratchbuild my own to prove my point, all the top german companies do it with a motor at each wheel for the power, durability & reliability. wdc is the only bonehead that refuses to change, and their market share diminishes moreso every yr as ppl get wise to their models' lack of substance. |
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Something kinda like this.
http://i301.photobucket.com/albums/n...kPics975-1.jpg http://i301.photobucket.com/albums/n...kPics974-1.jpg FGD |
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First of all, Steve, that's an awesome project! I cannot wait to see this thing take shape. Beyond all the bickering going on here, I'd just like to say, nice work! I am sure no matter what you use for a drivetrain, it's going to be a great model. We all have seen your other models and what you are capable of. I don't think any of us have to worry about it being strong.
On the gearmotor drivetrains, and this question is for anyone out there, what motors do the Stahl models run? What motors do the Fumotec/Vario 50 ton dumpers run? I am sure they are larger then what Stahl has, but has anyone actually located specs and the manufacturer of them? I've been looking around for gearmotors myself. Trying to find some that are small but strong. Best I have found this side of the pond are from places like Servocity, who sells something similar to what the Germans use, but is probably not exact. I'll stay out of the arguements going on right now, but in all honesty, I've been watching a lot of videos of machines with gearmotors and I'll just say I rarely see one stall for long, when a model pushes into a pile of dirt. Kind of like Joe says, maybe when you are using light throttle, and one wheel is a little on the light side (up in the air), it will spin before the others, but it seems once you hit half throttle they all dig. Axles and transmissions, or gearmotors this will still be a great build. |
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Yes, exactly like that Freddy.
That 385 motor spins about 16 000rpm with a very high quality, high reduction gearhead, oodles of power for a twenty - thirty pound model... better than any crap from Servocity or Jameco or any other surplus motor store stateside. It looks like Anaheim Automation may have some high quallity gh motors to pick from. What do you think of the gh motors you got for your scrapers Steve? (obviously too big to stand end to end within an aluminum axle for the loader, but quality wise?) |
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http://www.youtube.com/user/FumotecT.../1/2Y-oxV9QBnY
Fumotec's Bell 4206 (similar to the B50 dumper) with four brushless gh's. Frank had a vid showing this prototype as is with an 80lbs (approx) girl standing on it & so he could pull a small size car on payment. Might be on vimeo. |
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Very nice work on the loader Steve. You should be able to load even dump trailers quickly with that monster.
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These german models seem to have the perfect gh motors in them for smooth power & long term use, but there's never any marking on them so I don't know where they're sourcing them from. :confused: And I'm not going to ask them as it's their trade secret.
My 850 is using MFA ComoDrill motors. This is what's powering each track now (minus the right angle drive) with the 516:1 planetary head. Can't stall them. http://www.mfacomodrills.com/gearbox...ra_series.html |
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I know , I just got a Quote from them ;) also I got a different surce for tires ;)
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Steve, you must be twins to do as much as you do. The loader looks great so far. I wish I had the time and abilities you have.
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thanks Joe :) I wish :( I stay up past midnight on the cad and cam in the morning . but the late nights get to me some times :( . I've made my final decision on the driveline I would like the realisim of the tranny/ and diffs but like the pan for what we're doing and the time it'll take to make it bulit proof is not practical . If 4 gear motors will work for the pans , then they'll work for the loader . I got my quote from mfa right away , now it just waiting to get . those of you who run both liembach and jung , what do you think of them ? personally I like the design of the jung . and the stacked motor on pump will fit right in the cavity where the trany was to go leaving the whole rear behind the axles for batteries ;)
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greg |
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I run 12 or if I want a little more speed I run them on 18 volts, like I said though, my D8 runs 400 in/oz on each side and it will spin before it would ever power out.. What are you going to put them in Nathan
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Greg, I assumed these motors would probably be fine on up to 24 volts. They are supposed to be a 380 or 390 motor, I think? But the can is as large as any 540/550 motor I have ever seen. These are just a little shorter! Diameter seems the same.
I am really just playing around with the idea of using these. Nothing is for sure yet, but I want to build an articulated 4wd tractor. These are one of the options I am considering! |
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IDK guy's :confused: I'm going to give the MFA/commo motors a try in this , scrapers and now my mack :( .
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What exactly are MFA motors?
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quote by lil giants const. My 850 is using MFA ComoDrill motors. This is what's powering each track now (minus the right angle drive) with the 516:1 planetary head. Can't stall them. http://www.mfacomodrills.com/gearbox...ra_series.html fumotec uses them in their equipment . |
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Hey, thanks Steve! I guess I missed the link from Joe. Appreciated it.
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Got tired of moving bucket parts around :rolleyes::o a few pics and a comparison 1 behind a knight day cab on a king frame . I don't drink sada so no soda cans :o . the axles will be changed just not to sure which way I want to go yet . With the mack axle turning out to be a success I'm leaning that way ,depends on the maching time . a 4th axis on the mill would be great but I don't have 1 yet :( so I got to figure how in 3 axis , no big deal just more setup time :(
http://i830.photobucket.com/albums/z...r/PIC_1746.jpg http://i830.photobucket.com/albums/z...r/PIC_1747.jpg http://i830.photobucket.com/albums/z...r/PIC_1748.jpg http://i830.photobucket.com/albums/z...r/PIC_1749.jpg http://i830.photobucket.com/albums/z...r/PIC_1750.jpg |
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