JM1971 Posted March 22, 2014 Posted March 22, 2014 Cant go wrong with a black 9398, looks even better with lights. Quote
rm8 Posted May 15, 2014 Posted May 15, 2014 (edited) The most powerful 9398 crawler Edited May 15, 2014 by rm8 Quote
Jim Posted May 15, 2014 Posted May 15, 2014 Now, that's what I'm talkin' about! That's one bad megablocks crawler! Quote
syy89 Posted May 15, 2014 Posted May 15, 2014 Looks more like a Speedster than a Crawler to me. But nice job! Quote
JM1971 Posted May 15, 2014 Posted May 15, 2014 (edited) My 41999 xl motors was pretty fast but has nowhere near the torque of the buggy motors, nice job. Edited May 15, 2014 by JM1971 Quote
Rockbrick Posted May 15, 2014 Posted May 15, 2014 Nice, was wonderng when something like that was going to come out.... I have two rc motors waiting - but need some more battery boxes and IR receivers by the look of it.... any LXF files of it anywhere? Quote
Nico van Duin Posted May 15, 2014 Posted May 15, 2014 That's some amazing speed and power! I assume two lipos are for the rc-motors and the third one for the servo? Quote
rm8 Posted May 15, 2014 Posted May 15, 2014 (edited) Nice, was wonderng when something like that was going to come out.... I have two rc motors waiting - but need some more battery boxes and IR receivers by the look of it.... any LXF files of it anywhere? No LDD , but I can paint electric scheme, if interesting... It is like somebody with unlimited budget trying to build something crazy for drag strip:) Author used all posibilities to build the most powerful crawler using LEGO pieces only. If he can attach another 2 buggy motors and 3 LiPos - he will do it for sure:))). His only mistake - differentials;) Edited May 15, 2014 by rm8 Quote
PhyBuilder Posted May 15, 2014 Posted May 15, 2014 Assumed that too, but he connected the Lipo's in parallel, raising the current limit (multiplicated by 3). Don't know if it really works that way... Quote
rm8 Posted May 15, 2014 Posted May 15, 2014 (edited) Assumed that too, but he connected the Lipo's in parallel, raising the current limit (multiplicated by 3). Don't know if it really works that way... Yes, he increased overload protection border and current 3 times. Electric scheme uses 5 old 9v wires and 3 new PF-9v adapter wires, But it is very important to connect all LiPos right observing polarity when using old 9v wires. If not there is a risk of burning LiPos and receivers. It comes to dark side of power. Edited May 15, 2014 by rm8 Quote
Paul B Technic Posted May 15, 2014 Posted May 15, 2014 That is what the crawler SHOULD have been.... Nice work :) Quote
Rockbrick Posted May 16, 2014 Posted May 16, 2014 seems to have 'shaved' a bit off the edges of the RC motors to get them to fit (saw one of the development pictures) not so standard lego but well worth it for the results..! Quote
ddimkin Posted May 17, 2014 Posted May 17, 2014 Hi guys, just ordered my 9380 and 3rd party tires yesterday. Looked a lot but can't find info on how long the crawler runs with the original battery box (appr. in hours). Can someone share please? I'm sure I will have a lot of fun with it since nearby I have a great park with lots of offroad spots :) so I consider getting/building a spare battery box. Thanks a lot!! Quote
legomuppet9 Posted May 17, 2014 Posted May 17, 2014 Hi guys, just ordered my 9380 and 3rd party tires yesterday. Looked a lot but can't find info on how long the crawler runs with the original battery box (appr. in hours). Can someone share please? I'm sure I will have a lot of fun with it since nearby I have a great park with lots of offroad spots :) so I consider getting/building a spare battery box. Thanks a lot!! You have to buy your own AA Batteries and insert them. Then when they run out you replace them. Quote
ddimkin Posted May 17, 2014 Posted May 17, 2014 Thanks, I know that.. I was just wandering how long it rides with alkaline batteries so I can ruffly compare how long will it ride with NIMH batteries. Quote
piterx Posted May 17, 2014 Posted May 17, 2014 that's insane man o.o it would be interesting seeing how to connect wires to achieve the same result! Quote
JM1971 Posted May 18, 2014 Posted May 18, 2014 Thanks, I know that.. I was just wandering how long it rides with alkaline batteries so I can ruffly compare how long will it ride with NIMH batteries. 6 AAA batteries have a capacity of around 4500mAh, L Motors use between 225-450 mA per motor, so 5 hours at a guess. Check out eneloop batteries, they are pretty good. Quote
ddimkin Posted May 18, 2014 Posted May 18, 2014 (edited) Wow.. perfect.. thanks!! Just need to decide now with wich solution to go - Li-Ion or NiMh: post11: http://www.eurobrick...showtopic=95405 post23: http://www.eurobrick...showtopic=72170 The regulator is very interesting - from what I see it can output even currency (e.g. 9 or 10 volt) even if there is less on the input. Read also here.. need to read it again myself :) Btw. do you guys receive an email notifications when on topic replies? I don't even if it is set up in my account :( BR, Daniel Edited May 18, 2014 by ddimkin Quote
JM1971 Posted May 18, 2014 Posted May 18, 2014 Oops that should be 6 AA batteries which is around 11400 mAh, but I don't think they would last 10 hours, the man to ask is doc brown because he did rock crawler exhibition with a course he made and got though tons of batteries. Quote
OzBen Posted May 18, 2014 Posted May 18, 2014 Oops that should be 6 AA batteries which is around 11400 mAh, but I don't think they would last 10 hours, the man to ask is doc brown because he did rock crawler exhibition with a course he made and got though tons of batteries. Non stop they go for about 1.5hrs before a noticeable drop in performance. The batteries were budget brand long life alkaline Quote
ddimkin Posted May 18, 2014 Posted May 18, 2014 How about using this regulator to have 9v for longer time: http://www.ebay.co.uk/itm/350963713406?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 Quote
ddimkin Posted May 22, 2014 Posted May 22, 2014 Can someone please tell me which lego-parts are these - In the video you see them on s. Thanks a lot!!: and can they just replace the original ones without any further mods? Thanks a lot!! Quote
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