Re: Great Dane excavating co.
They really turned out good. What durometer did you end up going with?
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Re: Great Dane excavating co.
I made the first one a60, pretty firm, the second try is A40. I think the 40 will be better. Can squish the treads easy but I don't think the tire will roll or flex too much once on rim.
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Re: Great Dane excavating co.
Tire looks good cooper!!
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Re: Great Dane excavating co.
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Re: Great Dane excavating co.
Huge run flats ? Mike
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Re: Great Dane excavating co.
Tires look fantastic buddy... took me awhile to get caught up entirely on your thread, I was absent the last couple weeks of October.
Anyways, considering your motor options... I checked the motor output of the 4206, pulled the wheel off to get an accurate shaft rpm of 87 & my gizmo has a wheel adapter too, measuring surface wheel rpm 347. The 4206 has a 4 7/8" tire & the model moves along nearly at walking pace (I have a 36" inseam, I take big steps). http://img.photobucket.com/albums/v1...psiqiczsj4.jpg |
Re: Great Dane excavating co.
thanks joe, I still haven't decided what gearhead motors I'm going with..,, I'm waiting on some alum to show up and then ill figure out what motors will fit inside the axle housing. I may even take brian from exclusive rc advise and make printed parts once the motors are secured.
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Re: Great Dane excavating co.
I noticed a few pages back you said got some .55hp motors, they have gearheads on them too?
I did the measuring of the 4206 to try to find out what might be a good speed for your trk with 8" tires & hopefully still have plenty of power to move 160lbs with just two motors... the math works out to something between 50-55rpm. Ofcourse with your tools & talent you could also add an outboard planetary hub for more reduction from a faster smaller gearhead motor, pulling the guts out of a cordless drill. |
Re: Great Dane excavating co.
Here are the motors I got , well in mail. They may have to me taken apart and incorporated into the axle housing for a more slim mount. Being square, and the outside of gearhead may be just a little bit big. Don't know exactly till I get to it.
http://www.robotmarketplace.com/products/0-PDX256.html 90 rpm at shaft, and the stated hp is .55. Hard to believe half horse at shaft. But 256 reduction, I might not want to get my fingers swisted up in it. !! And having a half inch shaft that is already tapped at end, keyed,, that makes a lot more options I have for adding a weight bearing shaft. Your posts a while back on the adt, with fumotec axles is what gave me the idea. So reciprocating the posts, thanks. |
Re: Great Dane excavating co.
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Re: Great Dane excavating co.
those look huge or you have small hands
like mr.nutters |
Re: Great Dane excavating co.
Big hands and feet! Lol!!! No mr nutters is busy wrenching elsewhere
http://i1357.photobucket.com/albums/...ps7jhvw5mi.jpg |
Re: Great Dane excavating co.
Let's have a competition..... Guess the weight of rear axle and tires mounted when completed:D.
I say.... 27lbs. ish. :eek::jaw: |
Re: Great Dane excavating co.
Yea.
I say 27.7 lbs. ish. :eek: |
Re: Great Dane excavating co.
24.5lbs with welding 25.5 with
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im going for 26.9
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How do you get so close to a squirrel to catch them as pets . I've touched one and it took of like a rocket ! Mike
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Re: Great Dane excavating co.
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YOU REALLY DONT WANT ONE FOR A PET!! The bite through hard nuts- fingers are very soft!! So the tires/axle???? I'm slightly at an advantage here but I'll play,,, I'm saying 28.8 |
Re: Great Dane excavating co.
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Re: Great Dane excavating co.
Got some idea of what rim I'm doing. The size of these parts has made me think of using separate pieces combining into one. That requires me to learn how to weld alum. No spool gun . No tig, just the long line gun on the mig. :). But I did pick up a tank of argon. Luckily none of the welds will be visible and I'm going to be turning/milling them down. So what could go wrong!!! Lol!!! Thinking I really only need to to about 10" of alum weld all together. I still can't justify a tig welder,,,,,yet!!! Might change when I start pulling birdsnests out of the line feed!!!
http://i1357.photobucket.com/albums/...psppx0xtvr.jpg http://i1357.photobucket.com/albums/...psqeupws5g.jpg |
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