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About roeltheworld

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[MOC] Chevy K5 Blazer
roeltheworld replied to Madoca 1977's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Another instant classic! Absolutely love the innovative piston links and automatic dif lock. Epic work! -
I've been playing around with the system, and figured out a tighter mechanism. The Porsche has smaller wheel wells than the Camaro so there should be less forward and backward movement of the axle. This movement is affected not by the moving 'arms' or beams, but by the connector that holds the wheel axle. With a 3-stud length connector, the movement is about 1 stud forwards and backwards. The original design has another problem, which is that the wheel connector is 3x3 in size, and this is too large to fit inside the 49.5x20 wheel rims. That forces the wheels out, which makes the movement much worse. You can use the 49.5x14 wheels of the Camaro, but they don't look as good. So, I made a two stud axle connector, and this has a forward a backward motion of about half a stud either way. Also it fits better in the wheel rims. Sadly, the rotation is a little less pronounced, and the rear arms/beams are weaker than the front ones that have the gears attached. You can adjust the length of the outward arms between 4 and 6 studs. It won't matter. The new axle connector can have either axles or pins through them. The gears need to be changed from 24-8-24 tooth, to a 20-12-20 combination, due to the degree rotation of the arms. Above shows an early prototype. Here it is in the Porsche. As you can see they still touch the edges, but as my Porsche is a shelf queen anyway it will do just fine.
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I wanted to see if the system would fit in the 10295 Porsche. So I gave it a shot and I am quite pleased with the result: This is the Targa version (modded a little spoiler with left over parts, and I think the black tires are cooler) So first step was to remove the old system and put in the replacement pivot system. The steering axis had to be moved up one stud, so I made a modified version which is actually better than my original above. I'll add the update to my rebrickable later on. The thin pivot system fits perfectly: I used the 1x4 thin liftarm with wide axle hole together with a 1x5 pinhole thin liftarm. That 1x5 beam holds the gears together to avoid slippage. As you can see below, I used a larger cog together with the 8-tooth and this works really well. The movement of the wheels is now quite good, and definitely better than the original. I'm sure some of you can mod the steering linkage more efficiently, but for a proof of concept first draft I am quite happy with this experiment.
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Hi all, I got the BMW E30 alternative model of the 10304 Camaro by Firas, which is a stunning rebuild and highly recommended. That model however does not have a steering mechanism due to parts available, so I wanted to create a suitable virtual pivot mechanism that would fit in that scale of cars. https://rebrickable.com/mocs/MOC-196487/ysmajor/virtual-pivot-steering-15-stud-cars/#details It could be that the position of the 1x2 thin liftarms right next to the 24-tooth cog is illegal, as there is a little pressure between the parts when attached. Here it is in the E30. I have changed the wheel rims with something I had lying around, but the 10304 tires are the same size and work well with it. Here is the steering in action (with HOG system going underneath to the backseat):