Paul Boratko Posted February 19, 2014 Posted February 19, 2014 Ok, well I hope you can model it as accurately as possible. Also I don't think I've seen a muscle car in this scale with these tires before, it should be interesting. I've tried to make an old sports car in this scale before and it was extremely hard to fit everything you want in it. Good luck! I think these are the same wheels... Not sure though... Quote
nicjasno Posted February 19, 2014 Posted February 19, 2014 I love how you correctly angled the upper wishbones for some anti dive geometry. :) Quote
piterx Posted February 19, 2014 Posted February 19, 2014 this looks promising man :) i like the way you made the front axle Quote
LegoPanda Posted February 19, 2014 Posted February 19, 2014 it is one of my favorite cars, i hope you will make a great representation of it Quote
VKTechnic Posted February 19, 2014 Author Posted February 19, 2014 I think these are the same wheels... Not sure though... Yep, same wheels. I love how you correctly angled the upper wishbones for some anti dive geometry. :) Got that from your video on A-arm suspensions Quote
VKTechnic Posted February 22, 2014 Author Posted February 22, 2014 Sorry for the lack of updates, I've been a tad busy. Anyways, the rear axle has been completed: Unfortunately, LEGO bricks don't bend well enough to make good leaf springs. I tried 1x12 plates as well as 1x16 axles, and neither of those bend enough to make a soft suspension. On the other hand, flex axles are too soft to support the final model's weight. Thus, I developed some 3rd party leaf springs in Autodesk Inventor: These will be printed some time next week, but for now, I'll make some mock-ups and get working on the chassis. Quote
unimog123 Posted February 22, 2014 Posted February 22, 2014 Nice axle! Great leaf spring idea, Lego should manufacture similar leaf springs for some of there truck models preferably the 42029 Pickup Truck. Quote
Technyk32231 Posted February 22, 2014 Posted February 22, 2014 (edited) Sorry for the lack of updates, I've been a tad busy. Anyways, the rear axle has been completed: Unfortunately, LEGO bricks don't bend well enough to make good leaf springs. I tried 1x12 plates as well as 1x16 axles, and neither of those bend enough to make a soft suspension. On the other hand, flex axles are too soft to support the final model's weight. Thus, I developed some 3rd party leaf springs in Autodesk Inventor: These will be printed some time next week, but for now, I'll make some mock-ups and get working on the chassis. Weird, I was just thinking about this. Are you goind to use spring-under or spring-over? Edited February 23, 2014 by Technyk32231 Quote
Hrafn Posted February 23, 2014 Posted February 23, 2014 Unfortunately, LEGO bricks don't bend well enough to make good leaf springs. I tried 1x12 plates as well as 1x16 axles, and neither of those bend enough to make a soft suspension. On the other hand, flex axles are too soft to support the final model's weight. Thus, I developed some 3rd party leaf springs in Autodesk Inventor: I hope your leaf springs work out! I know a couple of people have used 2791 as a leaf spring, with 2790 in the middle to connect to the axle being suspended. It sort of works but isn't ideal. Quote
MrNumbskull13 Posted February 23, 2014 Posted February 23, 2014 (edited) Couldn't you just use two flex axles per side? Edited February 23, 2014 by MrNumbskull13 Quote
VKTechnic Posted February 23, 2014 Author Posted February 23, 2014 Another problem I didn't mention with flex axles is the fact that they move side to side. With real-life leaf springs, the axles don't need linkages because the leaf springs only provide motion up and down. If I were to use flex axles, I'd need extra linkages, and they will only act as a shock absorber. Same with the idea posed by Hrafn: the rear axle would have no stability with forward-backward movement. Quote
nicjasno Posted February 23, 2014 Posted February 23, 2014 Why don't you like plate leaf springs? They offer enough flex. I found all my leaf sprung cars to be quite soft. Quote
piterx Posted February 23, 2014 Posted February 23, 2014 XD probably because your cars weigh something near to the real counterparts lol Quote
Technyk32231 Posted February 23, 2014 Posted February 23, 2014 XD probably because your cars weigh something near to the real counterparts lol True dat. Quote
VKTechnic Posted February 23, 2014 Author Posted February 23, 2014 Why don't you like plate leaf springs? They offer enough flex. I found all my leaf sprung cars to be quite soft. I built a mock-up leaf spring setup and I found it to be too stiff for the model I'm building. Plus, mounting them is a little awkward, as I don't have the 1x4 lightsaber pieces. For now, though, here's a chassis with the mock-up springs: I redesigned the rear axle as well, so that the axle is as close to the spring as possible. Here's a picture of the axle alone: Quote
unimog123 Posted February 23, 2014 Posted February 23, 2014 Nice job! You are using the hockey spring for the steering, right? Also, are you going to have a working steering wheel? I'm interested to see how those leaf springs work out. Quote
Saberwing40k Posted February 23, 2014 Posted February 23, 2014 I like that axle, but I can think of an idea for well working leaf springs, that uses those 2l rubber connectors. It's good for models like this, as I have used it in a large trailer model. Unless, of course, you want to go the 3d print route. Quote
HorcikDesigns Posted February 23, 2014 Posted February 23, 2014 The chassis promises a lot... :D However, are you planning to power it by just one L motor? ;) Quote
Milan Posted February 23, 2014 Posted February 23, 2014 For THIS truck I used 1x 10 and 1x12 axles to act as a leafs. Very tidy and clean solution, but the vehicle has to be heavy for suspension to work. The truck weights about 3.5 kg. Your car will weight much less though.... Don't forget that make it more stronger than it needs right now, as the weight will grow. Quote
VKTechnic Posted February 23, 2014 Author Posted February 23, 2014 Nice job! You are using the hockey spring for the steering, right? Also, are you going to have a working steering wheel? I'm interested to see how those leaf springs work out. Yep, using hockey spring, The chassis promises a lot... :D However, are you planning to power it by just one L motor? ;) Yep, just one. The drivetrain is really simple, so I don't need much power. For THIS truck I used 1x 10 and 1x12 axles to act as a leafs. Very tidy and clean solution, but the vehicle has to be heavy for suspension to work. The truck weights about 3.5 kg. Your car will weight much less though.... Don't forget that make it more stronger than it needs right now, as the weight will grow. I tried 16L axles, and I didn't really like them either. There isn't a good way to mount them without the axles moving around. Quote
VKTechnic Posted February 26, 2014 Author Posted February 26, 2014 (edited) Progress has been done! I removed the engine scoop and started working on the front end. Plus I installed a working steering wheel. Random facts: The car has Ackerman steering geometry, and the front shocks are mounted to the top wishbones (for accuracy, of course). Edited February 26, 2014 by Victor Kojenov (TFOL) Quote
unimog123 Posted February 26, 2014 Posted February 26, 2014 I agree! Great front grill, and do I see a dashboard coming along in dark grey? Quote
fasterthanlight Posted February 26, 2014 Posted February 26, 2014 Looking good so far! But I think its a few studs too wide for the size of the tires :( The headlights on the real car are right to the edge on either side of the car, but its looking like the tires are sticking out too far Quote
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