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Post by gatormarcstaug on Jul 25, 2011 23:07:12 GMT -5
Kerry, the sheaves are parts from some Tamiya racecars back in the 90's they were actually rollers to help guide the cars around the walled track. When I bought them I just didn't get enough . I also have some larger ones from Tamiya but they are too large for this project. The boom is actually made from angle and round tubing. The long pieces are called chords and the short pieces on the angle are called struts. To do a proper Manitowoc boom you need to turn the angle out then run tubular chords. though it is possible they made tubular boom for those cranes as well. I never saw one. hope this helps. If need be PM me!
Gator
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truckmaniac
Local Delivery Truck Driver
An other town,an other place,an other truck,an other race !
Posts: 378
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Post by truckmaniac on Jul 26, 2011 2:43:34 GMT -5
Amazing work!!! Wow...very big model there on Your bench!!!
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kerr54
Local Delivery Truck Driver
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Post by kerr54 on Jul 26, 2011 18:10:05 GMT -5
Thanks truck, glad you could drop by. Gator I did read somewhere how someone used a simular item to make those sheaves. UUghhh I can't remember. Oh yes I remember, it was wheels from a HO scale train car I believe. After sanding down the face of each one he glued them together. Although I don't think I'll be using that on this. I will think about that later as I need to finish what I started for now. But did you have a jig for making those booms? Or did you just lay it out and go? Either way they look great. I want to keep in mind also that I want this boom for my crane to fold because I want this to go on my heavy hauler truck. But also extend it if I want to display it. Anyways, talk with you guys later. Kerry
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ewaskew
Local Delivery Truck Driver
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Post by ewaskew on Jul 26, 2011 18:36:19 GMT -5
Very nice detailed scratch building. Earl
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Post by gatormarcstaug on Jul 27, 2011 0:41:54 GMT -5
Kerry, For the boom I made a jig of sorts after drawing out the angles on a large piece of graph paper. I have it out in the garage. I will take a pic and post it. And if I can find the sheaves I will take a pic of them.. But you are doing a fine job!
Gator
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kerr54
Local Delivery Truck Driver
Posts: 189
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Post by kerr54 on Aug 1, 2011 5:34:46 GMT -5
thanks Gator and Earl, here is an update on my crane. The track drives are coming along and this first picture is where I sorta put the two side pieces together by building the what I call the tail section. After putting the two sides together I began work on putting the support wheels together for which I had already cut out the disc for these earlier. But here is the parts required for this. As you can see, they may not be like the original machine but as someone said before, you create the illusion of the real thing. They may be like the real thing but I could not get a look at the real wheels or rollers just the size from the outside. Here is the rollers installed and all I have to do is to clean up the shaft from the outside and add the bolt heads to the end of the shaft. I see now I should have got more detailed photos of this as I will do that later this week. Now I can continue with building the rest of the track rail across the top. this last one is where the track rail is complete along with the rollers installed and now for some cleanup and fine tuning. I will get more detailed pictures of this, this week. Thanks guys. Kerry
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Deleted
Deleted Member
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Post by Deleted on Aug 1, 2011 6:26:30 GMT -5
Great work, Kerry. Think this will be ready for Fulton in November?
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rronning
Local Delivery Truck Driver
Heavy Equipment 911
Posts: 82
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Post by rronning on Aug 1, 2011 10:39:37 GMT -5
This thing is crazy. Its coming along great.
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41chevy
CDL Student Driver
MY B-61
Posts: 743
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Post by 41chevy on Aug 1, 2011 11:03:10 GMT -5
The pins he is talking about, are what the "teeth" in the drive sprocket engage (mesh) with to move the tracks. The clearest photo I can give you is a M 4 Sherman, but All track laying vehicles use some variation of this type of pin and gear method to move the vehicle. Paul
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kerr54
Local Delivery Truck Driver
Posts: 189
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Post by kerr54 on Aug 1, 2011 19:21:44 GMT -5
Hi Jimb, Nice to see ya, I think it will be or I am shooting for that anyways to be ready for November. I think with this as a load on my heavy hauler it should be interesting. Not to mention fun. Thanks ummm rr, it sure is testing for me but so far everything is working out. It's turned into mostly a weekend thing for now with work n all. Hi Paul, I see what you mean now and I did go and take another look at the real one and just my luck there happen to be a couple of mechanics there and they did say that the two sprockets (track and drive chain) are as one piece. It's alittle difficult to explain to you but I do need to cut the spokes out of my sprocket and after I get the final size from the piece I'm working on, I will start on the track sprocket. I've taken measurements and many pictures to help so it should be okay. Here are a pic or two to so as you can see. These should be interesting. Hope this helps. Cheers guys Kerry
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41chevy
CDL Student Driver
MY B-61
Posts: 743
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Post by 41chevy on Aug 1, 2011 20:20:58 GMT -5
Kerry, I see the drive slots in the center of the tracks, looks fairly easy to copy. Nice! Paul
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truckmaniac
Local Delivery Truck Driver
An other town,an other place,an other truck,an other race !
Posts: 378
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Post by truckmaniac on Aug 4, 2011 0:53:40 GMT -5
Very good work and good progress on crawler crane.Looks realistic right now.MOre!!!
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kerr54
Local Delivery Truck Driver
Posts: 189
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Post by kerr54 on Aug 6, 2011 20:30:52 GMT -5
Thanks Werner, I have been working on the drive sprockets today and I've taken several pics and I will post a update tomorrow as I finish my weekend work. Kerry
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kerr54
Local Delivery Truck Driver
Posts: 189
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Post by kerr54 on Aug 8, 2011 19:51:48 GMT -5
Hello everyone, Well my weekend work didn't turn as much work as I hoped but I did get the drive sprockets made and I have some pictures of how I did that. Some of my methods may be crued to some but you have to work with what ya got right? The first pic is where after I got my final size for the sprocket I took my circle cutter and cut the disc alittle over size to allow for cleaning and such. After snapping them out of the sheet I cut them from this is what I have to work with. After using the circle cutter I have center so I drilled small holes the size of my tool for the drimel. But I did glue four pieces to the other four to make four wheels and then drilled the holes. This is what it looks like in my drimel. After filing and careful sanding it is to the correct size. Next I glued to the surface of the blanks, my templet from my cad program and set it up on my drill press as I did with the other sprockets and drilled three different size holes all the way around following the templet. Now after being very careful and with some luck, this is what I finished with. Ready to be gone over very good with a couple of files. Now after I filed and sanded and shaped them to what I want them to look like this is what I have. Ready for the next step. This step is where I cut 52 small triangular shapes for the spokes that glue to the shaft and wheel. Now after carefully placing each one in place it is now time to let dry really good and it's time for some clean up and final sizing. Note that I had also cut out the teeth during the first round of filing. But this is what will go into the frame and with some luck it will all work out well. I hope this helps and I am going to have to make sure it all lines up. Until the next one guys. I hope you enjoy and take care. Kerry
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41chevy
CDL Student Driver
MY B-61
Posts: 743
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Post by 41chevy on Aug 8, 2011 20:48:51 GMT -5
Now those look excellent!!! Well worth the work IMO. Paul
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