efferman Posted April 19, 2013 Author Posted April 19, 2013 well, with lego the whole suspension is a bit experimental and if it wouldnt work in terrain.... well, then i have my rocksolid but not scale axles from my big G Quote
Boxerlego Posted April 19, 2013 Posted April 19, 2013 Looking at the pictures has answer my second question about steering setup. Now that is pretty sweet to have the steering all controllable by one servo motor. Quote
OleBM Posted April 19, 2013 Posted April 19, 2013 the scale fits in both sizes to their tires, has someone used this dampers for suspensions before and how does it works in terrain? This works well if you disassemble it, and then use a thick needle to poke one or two holes in the round rubber dampening part. When you then assemble it, it will work as a real shock absober in a real car. Quote
dandexter Posted April 20, 2013 Posted April 20, 2013 Probably a stupid question, but i'v been looking at the LDD file. What I am I getting wrong, gears appear to be driving the part of the turntable that is connected to the frame of the truck. Therefore it wouldn't turn the wheels, it would be trying to turn the truck around the wheels? Like I said i'm pretty sure i'm missing something. Quote
efferman Posted April 20, 2013 Author Posted April 20, 2013 to be exact the center 8 tooth gear is driving the four planetary 8 tooths which are mounted at the wheel. the four eight tooths are reacting with the static 24 tooth at the turntable and pushes the wheel forward. for more informations read this at wikipedia Quote
efferman Posted April 21, 2013 Author Posted April 21, 2013 again a minor change, but at this time from complex and fragile to simple but solid. the main reason was the big amount of universal joints wich the older version has needed. this version needs only 4, the fragile version would need 20 universal joints. as transmission system i have tried a limited slip diff. to realise this, i have used one of the white torque limiter gears. it is mounted at one of the diff outputs and is driven by the same axle which drives the full diff. this realizes at the same time the slip limiting and reducing the strain on the center 12 tooth in the diff. the complete gear ratio is 1:8 Quote
DLuders Posted April 21, 2013 Posted April 21, 2013 I like the continual innovations that you are making! Quote
GuiliuG Posted April 21, 2013 Posted April 21, 2013 I see a problem : both axles are linked together with a ball-joint ! Otherwise, they look great and efficiently built. Quote
AndyCW Posted April 21, 2013 Posted April 21, 2013 I like the limited slip solution. It looks like 8:1 overall gearing from a PF XL. How are you going to locate the axles under the chassis? v/r Andy Quote
Zerobricks Posted April 21, 2013 Posted April 21, 2013 One top. Gear up Xl 20:12 and than gear it 12:20 with half bewel gears. This way the bewel 12 tooth gears wont slip Quote
efferman Posted April 21, 2013 Author Posted April 21, 2013 I see a problem : both axles are linked together with a ball-joint ! Otherwise, they look great and efficiently built. the balljoint between the axles will be guided with my liftarm solution from my Big G. if there will happen no disaster, the axles will go straight forward. zblj, which slip on the 12 tooths? Quote
Zerobricks Posted April 21, 2013 Posted April 21, 2013 The bewel12 tooth to regular one near the diff. Quote
efferman Posted April 21, 2013 Author Posted April 21, 2013 maybe i will have a bad awakening when the Kat is pulling my mog through the forest, but i think the 12 tooths are good secured to the 24 tooths. Quote
GuiliuG Posted April 21, 2013 Posted April 21, 2013 Yes but the central axle can't compress without the rear one does the same... Quote
efferman Posted April 21, 2013 Author Posted April 21, 2013 maybe there are some influences, and i will see it first at a testtdrive, but where would be the technical reality when no one test out his sick ideas? Quote
efferman Posted April 22, 2013 Author Posted April 22, 2013 the third axle is final, because i have reached nearly 60 cm in length, the next update will be outside 100_0482 von efferman auf Flickr Quote
Someonenamedjon Posted April 22, 2013 Posted April 22, 2013 So you won't be doing the eight axles in the picture you posted? I think it will look great anyways though Quote
efferman Posted April 26, 2013 Author Posted April 26, 2013 ... of the fotobox tomorrow hopefully a vid in terrain Quote
Someonenamedjon Posted April 26, 2013 Posted April 26, 2013 oh...it looks really good though! I can't wait for the video! Quote
rm8 Posted April 26, 2013 Posted April 26, 2013 (edited) Hoo hoo. Catching my falling jaw:))) Size is everyting!:))) Change you nick Efferman => 3Gman : Giant, Gelandewagen, Germany man!:D Edited April 26, 2013 by rm8 Quote
Zerobricks Posted April 27, 2013 Posted April 27, 2013 (edited) Or Gman from HL2 :) Looks really massive! Edited April 27, 2013 by Zblj Quote
efferman Posted April 27, 2013 Author Posted April 27, 2013 please take a seat and be the co-driver Quote
Zerobricks Posted April 27, 2013 Posted April 27, 2013 (edited) Not bad, but suspension looks a bit stiff so far. But when you wil finish it, and there will be more weight, it should be fine. You used 1 servo to control 2 others? Edited April 27, 2013 by Zblj Quote
efferman Posted April 27, 2013 Author Posted April 27, 2013 yes, the suspension is actually to stiff and the frame to flexible, the final modell should work fine. the servo controls the four PF-XL with the two direction reversers. so i have the full current of the battery boxes and i need only one receiver for an multi motor setup. Quote
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