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Everything posted by Doc_Brown
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The Reaper 4 x 4
Doc_Brown replied to Doc_Brown's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Thanks, I assembled them myself. From different shocks, the black ends from some old bike sets.- 44 replies
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The Reaper 4 x 4
Doc_Brown replied to Doc_Brown's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
LOL, I wish, but you just gave me an awesome idea! I will build a test track from chipboard with hills and stuff, and put some cheap sandpaper over it as grip.- 44 replies
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The Reaper 4 x 4
Doc_Brown replied to Doc_Brown's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
HAHAHA, Thanks mate! I know I want to make a video baddd, but the cool rocks are far away....- 44 replies
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The Reaper 4 x 4
Doc_Brown replied to Doc_Brown's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
There are adapters for the NXT motors to fit to more regular PF connections. Dang should have mentioned that. Thanks!- 44 replies
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The Reaper 4 x 4
Doc_Brown posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hello everyone! I'm proud to show my latest MOC... THE REAPER This model is based on Tim Cameron's "Showtime" and other similar Rock crawlers. The chassis utilizes NXT motors geared down 3:1, and one servo for steering the front wheels only. The NXT motors are connected using adapters that allow connection to regular PF elements. This project started out as a "quick" experiment that soon got out of hand!!! I enjoyed trying out ways of joining liftarms and seeing what shapes I could get out of them. Things that I'm not too happy with are the shortness of the model, and now that I have found some better pics of Showtime I can see it should be 3-4 studs longer, and lower too. The seats were far more leaned back, but due to the rear motor needing more clearance I had to pull them forward making the cab a bit cramped. LOL As for performance, I was amazed, The Reaper will easily go up 45 degree plank of wood, that is quite smooth with no major tweaks. Turning isn't the best, but that is to be expected with no diffs; and I tried to tune it to a nice balance of turning and NON wheel tearing. This crawler has no gear grinding at all, and I am very happy with the new type 2 8t. :thumbup: also I rigged the PF lights to the steering so it kind of flashes when steered! Edit: The shocks were made from combining Unimog and old bike sets, just to keep it black. Weight is 1.320 KG. After I have made a video (prob next week, Wed) I will reuse and tweak this awesome chassis, and hopefully make something a little lower. Please feel free to comment, and ask any question's. If you would like a particular pic please ask soonish as I have the lights set up hahaha. Thanks for looking.- 44 replies
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Supercar: WIP
Doc_Brown replied to legomuppet9's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Noooo, don't scrap it, I love Ford Capri's!!! Did it really have leaf springs tho???? -
Help with elevator and doors
Doc_Brown replied to marshall's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I was planning on building an elevator later this year hopefully with nxt or Ev3. There is an awesome vid on youtube somewhere where a worker above the elevator records in HD how everything works. If I find it I will link it here. Apart from that all I know is you will need a counter weigh the the lift itself. -
I have thought about spraying parts, I wanted to make a white frame for my crawler but there are not white connectors and it will look stupid otherwise. @ jon. If you use good paint I don't see why it would come off, like citadel paint. I need an airtank to test, anyone lend me one????? you know 1 x 11 orange goes for like 7 E each, used on BL??? I know they only come from one 2002 model now, but geez......
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Motor Upgrade
Doc_Brown replied to Boxerlego's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Wow that is really interesting, keep up the good research! I don't have a rpm reader so can't try these things. Don't worry man, I have a LOT of experience with pinion gears and such. -
Motor Upgrade
Doc_Brown replied to Boxerlego's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
WOW. that's a really interesting test, so the weaker magnets equal higher RPM? I'm hoping that with a bit of "force" it will fit 2mm, hahaha. -
Motor Upgrade
Doc_Brown replied to Boxerlego's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Heres the motors that are available of the shelf here in OZ. Im thinking the ym-2716 as it is 27mm dia, so will fit inside 4x8x4 studs, and has a draw of .28a so 2 could be powered by a battery box and still be almost twice teh power of the RC motors. -
Motor Upgrade
Doc_Brown replied to Boxerlego's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
OK cool 800ma it is. So if you want 2 of the most powerful motors per battery box you really can't exceed 280ma per motor. Yeh my motor is a dud, i can see the magnets inside are not alighted, obviously not glued in correctly. and its making a screechy sound now. hahaha My local electronic store sells good motors, I will post there data sheet soon. trying to get one that's 27mm dia, so will fit in a 4 x 8 battery box (old one) Thanks for the info -
I sure wouldn't mind more pics, of the truck wheels off and suspension, if you don't mind. Cheers
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I really first noticed it on the Unimog, all those different shades of orange, Kinda ruined the biggest set ever! At the moment I have a huge collection of dark bluish grey plates from all over the world. Putting them together is a real pain as I have to blend from lightest to darkest. I really hope they improve this soon. Thanks for that! I now feel "informed". So there was a great war in 2004! Yeh I missed that....
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The chassis I'm making involves both new and old technic, a challenge to combine, but fun trying! I'm hoping to study some of your pics to help my problems. Just remembered Jeremy Clarkson "tested" a Magnum on Topgear. haha
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Mini Tatra project 8x8
Doc_Brown replied to jorgeopesi's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Yes credit goes to you! that is a great design. -
Amazing! I too love your stickers, well done on these awesome models. :thumbup: So detailed, I'm guessing you see this truck everyday perhaps?