SPARKY
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Age: 70
Location: Phoenix
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« Reply #30 on: March 09, 2009, 02:01:15 PM » |
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Righ now there is a part of my shop that is exactly what we are doing Dan  Andy and I sometimes get behind the process and have to use full beers instead of empties---if you are ever in Phoenix we would welcome your help with the design process!!!!! lol  |
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WORDS to build by!
"--virtually the entire success of a turbo/engine system lies in thermal managemant."
Corky Bell MAXIMUM BOOST
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saltfever
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« Reply #31 on: March 09, 2009, 02:34:24 PM » |
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I agree with Dan in that the fun part of it all is the fabrication and decision making in the shop.  On the other hand some wonderful CAD and Engineering tools have have been developed and been significantly lowered in price in recent years. If affordable, I would rather get a FEA (finite element analysis) look at the cage before a real life event! |
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maguromic
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« Reply #32 on: March 09, 2009, 04:20:11 PM » |
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The big benefit for us is using the models to do the FEA and CFD work. Especially on the FEA work on the cage, like saltfever mentioned "I would rather get a FEA (finite element analysis) look at the cage before a real life event!" There are some ideas that we want to try out before we start cutting pipe. Tony
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“If you haven’t seen the future, you are not going fast enough”
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maguromic
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« Reply #33 on: March 10, 2009, 06:29:23 PM » |
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Finally the suspension design is done and we are very happy with the geometry outcome. The castor, kingpin, scrub, trail, camber curve and bump steer all look really good. The steering arm is double sheer for added insurance. Since we went with spindle mounts, Rich Bogart (Bogart Wheels) had to re design the front hubs to get the upright to fit properly. Something I never thought of but Rich bought it my attention that most aluminum rims aren’t designed for the tire pressures that LSR cars run (60PSI plus) and are prone to cracking and should be checked annually. If we don’t get spring fever from all the beautiful weather we have been having, some more might get done. Drawing by Steve Conover  |
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“If you haven’t seen the future, you are not going fast enough”
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saltfever
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« Reply #34 on: March 10, 2009, 11:52:44 PM » |
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B e a u t i f u l design by Steve. Tony, any chance we could link to the solid model somehow so we can play with it? Sometimes a "viewer" can be downloaded from the CAD OEM to allow review or manipulation by others without the ability to alter the data. If the intellectual property could be protected it would be quite educational or helpful to understand the various geometry. TIA |
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maguromic
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« Reply #35 on: March 11, 2009, 12:27:40 PM » |
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saltfever, Let me check if it can be done without giving up any of the IP. I received a few PM's on if the upright was an off the shelf part. The upright is designed to fit inside the wheel (15 x3 1/2) without protruding out of the inside cover. The spindle is an off the shelf part from Pro Works that is welded to the upright. Tony   |
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“If you haven’t seen the future, you are not going fast enough”
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Sumner
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Age: 69
Location: Blanding, Utah
Posts: 2840
Blanding, Ut..a small dot in the middle of nowhere
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« Reply #36 on: March 11, 2009, 02:52:23 PM » |
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......... The spindle is an off the shelf part from Pro Works that is welded to the upright. Tony. Tony do you have a link to that spindle? What hub can be used with it? Thanks and it looks like a great project, Sum |
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maguromic
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« Reply #37 on: March 11, 2009, 05:03:41 PM » |
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Sum, The spindle came from the Chassis Shop. http://secure.chassisshop.com/pdf/Steering-Controls-1.4.pdf Its on page 48 at the bottom. It will work with any Anglia hub or Anglia hub and wheel combo. On ours we had machine the hub about 1/4" to clear the inside part of the upright. Tony |
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“If you haven’t seen the future, you are not going fast enough”
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krusty
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« Reply #38 on: March 13, 2009, 09:53:27 AM » |
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You can do this: go to the site www.solidworks.com. Scroll down to the bottom of the page and click on eDrawings under FREE CAD TOOLS. Download the free program SolidworksViewer for either the PC or Mac. Then, if Tony sends you the file(s) as .dwg files, you will be able to manipulate them without being able to alter the file content. We also used Solidworks to design our new chassis and our engineer shared design progress with me via emails with zipped files. Solidworks is especially suited to finding out how parts will fit in available space(s), but a PITA to generate framework plans that you can cut pipe off of. vic
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maguromic
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« Reply #39 on: March 13, 2009, 09:14:09 PM » |
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The reader is available, but trying to do it without giving up the Intellectual Property (IP) is what we are working on. Vic, I know what you mean about Solidworks, that's why I am going to draw the frame using Unigraphics NX. After running the CFD program, we had to move the front wheels out further from the body (moved them around till we found the optimal spot for this car) as it was a choke point for the air. This made the A arms longer, and doing the FEA showed that the arms had to be re designed. Their isn't a big change on top, but the lower arm is now billet and two pieces. Tony Removed the wrong picture. I will add the correct one soon. Design by Steve Conover  |
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« Last Edit: March 13, 2009, 11:31:45 PM by maguromic »
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“If you haven’t seen the future, you are not going fast enough”
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1212FBGS
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« Reply #40 on: March 14, 2009, 12:31:22 AM » |
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how far out did ya wind up moving the wheels? are you doing the CFD? I'm having a problem with the students and my CFD stuff..
Kent
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maguromic
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« Reply #41 on: March 15, 2009, 11:23:39 AM » |
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how far out did ya wind up moving the wheels? are you doing the CFD? I'm having a problem with the students and my CFD stuff..
Kent
Originally we had the wheels about 4" from the body, after playing around with the CFD program, we found the optimal spot to be 6" from the body. One caveat, this is optimal for our nose, body shape (cowl forward), suspension and front aero strategy. It will be different on other cars with different parameters. I didn't do the CFD work, another one of the usual suspects working on the build did. If you want I can ask him for you. I know with the ALMS race season going, he is not here that much, so he might not be able to work at a fast pace on it. Tony |
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« Last Edit: March 15, 2009, 11:32:30 AM by maguromic »
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“If you haven’t seen the future, you are not going fast enough”
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maguromic
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« Reply #42 on: March 22, 2009, 07:47:26 PM » |
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Haven't had much to update till now, but here is the updated rear setup. Originally we were going to have duel inboard brakes. But when we ran the numbers we didn't see any benefit, only the extra drag and difficulty in changing gear ratios. It was decided to go back to outboard brakes. The rear is drawn with a GMC block as that's the only drawing I had, but it will be set up for C, D and E motor plates. If any of the guys working on the car wants to run a AA engine it will also have the room. The four bars going toward the driver are there just for alignment purposes and will not be in the frame drawing.   |
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“If you haven’t seen the future, you are not going fast enough”
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krusty
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« Reply #43 on: March 22, 2009, 08:16:49 PM » |
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Looks good, Tony. Makes me skeered to post pics of our new, somewhat old school/primitive RMR (but I'm gonna do it soon as I get the pics uploaded to Photobucket) vic
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maguromic
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« Reply #44 on: March 22, 2009, 08:30:34 PM » |
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Looks good, Tony. Makes me skeered to post pics of our new, somewhat old school/primitive RMR (but I'm gonna do it soon as I get the pics uploaded to Photobucket) vic
Vic, I have seen your handy work in IMSA and Trans-Am. Anything your are involved with is very far from primitive. Post some pics of that car. As far is this build, its just some of your old friends from Gloy's trying to have some fun.Tony |
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“If you haven’t seen the future, you are not going fast enough”
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