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About dhc6twinotter

  • Birthday 11/01/1982

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    Washington State
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    LEGO, photography, travel, aviation, and Toyota trucks.


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  1. Nice effort there, but I think there are some things to consider: 1) Your driveshaft linking the two axles together like this will force your axles to work in a more pendular manner in relation to each other. Is this your goal? Your original idea of using the mini turntable may work if you are willing to offset the steering shaft to one side or the other (see below, however). 2) Your steering shaft running from one axle to the other will not work in this configuration. When your axles pivot around the driveshaft, your steering shaft if going to move in every direction. If you are going to use a steering shaft rather than linkages like victormendoza mentioned, you are going to have to use a u-joint and cv-joint with probably at least a 6 or 8L axle between the two. 3) Your steering configuration will cause the axles to steer in opposite directions. Is that your goal? 4) Your knuckles need more bracing, and I don't see a pivot point. The knuckles should have a pivot point in line with the CVs. 5) Your springs are mounted in such a way that doesn't provide much articulation. You'd be better off rotating the mount 90 degrees, but even that isn't optimal. 6) I would suggest removing the 6L links. This configuration will cause binding on the driveshaft, unless you use u-joints and cv joints on the driveshaft as well. Great render, and I wish I had those rendering skills. Have you built a real version of this suspension? Some thoughts to ponder: 1) How many connection points does each axle have to the suspension arms? It looks like each axle only has two connections, and this won't work. Maybe there is a mount somewhere else that I'm not seeing? Are the two axles physically connected to each other in any way, other than a driveshaft? 2) The driveshaft is going to have a lot of friction, and probably bind up if you are using it to keep the axles in line with each other. The center driveshaft will probably slide out of the pinion gears when the suspension compresses, if you don't have anything else keeping the two axles together. 3) Those red connectors are going to be pushed out when the suspension compresses. 4) The steering linkages are a good idea, but the configuration of the pivot points is going to cause the axles to steer in opposite directions. Digital renders can be a great tool, but I think physical builds are almost always needed to understand the geometry and forces at play, especially for suspension designs. :D
  2. I really like the idea behind this contest! Sounds great! I haven't built anything in a few years, but I might have a go at this contest, if time permits.
  3. dhc6twinotter

    Technic 2020 Set Discussion

    Those two are probably some of the best episodes from Top Gear (along with the Vietnam special). Speaking of the backhoe, that is probably going to be a must-buy for me. I haven't purchased a Technic set since the Xerion (stuff is just getting too expensive, especially considering I prefer to builds MOCs rather than sets). I always told myself that if LEGO offers a legitimate backhoe or tow truck, I'd buy one. Otherwise, I don't see much Technic set purchases in my future.
  4. dhc6twinotter

    42100 Liebherr R9800 Excavator

    I'm seriously thinking about just using the Spike Prime hub for my Mocs instead of the PU Hub. The six ports will come in handy, but even then, having to now find room for two battery boxes is going to be a real pain. I'm not even sure I want to invest in the PU stuff, especially if there isn't going to be any extension cables available. With the PF stuff, I've port stacked on every moc I've built that was RC. I never once had an issue with over-current protectors kicking in. The new PU stuff is nice, but there are some major drawbacks.
  5. dhc6twinotter

    Technic 2019 Set Discussion

    I light element with programable light patterns would be pretty sweet, especially if more than one pair of lights can be connected to it.
  6. dhc6twinotter

    Technic 2019 Set Discussion

    I hope there is a way to stack outputs, but it doesn't look like this is the case. Most of my mocs use two drive motors, and I've always stacked the plugs on one IR port. Now, it looks like I'll have to use two ports on the hub, and I presume there is a way to link outputs together in the app. Adding lights and such can use up ports pretty fast too! What I used to do with one BB and 4 IR Receivers may now require three bulky hubs! I really want to see some way to stack port outputs! The new PU system really seems to take up a lot of space, and I'm not a fan of having to have a whole new set of batteries for every four outputs.
  7. dhc6twinotter

    3 functions through the newer turntable

    I don't know that the new turntable would offer much of a difference versus the old one in this regard. It has more space, but I don't think space was the problem with getting three functions through the center of the old turntable. The issue was how to get three shafts spinning around each other without getting in the way of each other as well. This might help: The new turntable doesn't really solve any of these issues, other than maybe give a bit more space.
  8. dhc6twinotter

    42082 - Rough Terrain Crane

    Personally, I've never build a B model in my life, so I would prefer TLG spends more development time on the actual A model. That's just me though...
  9. Well, I think it was kind of a collaborated idea, and I really like what I'm seeing so far! There is some neat stuff!
  10. dhc6twinotter

    42082 - Rough Terrain Crane

    I'm on the fence with this set. There is no reason why a set this size couldn't have a three section boom or pendular axle. The functions just seem pretty basic to me, although I do like the multi-directions gear boxes. Too bad about all the color vomit and extra dribble. I don't really see a need for things like tool boxes and such on a technic model. That just pads the part count and jacks the price up. The crane might be my only Technic set this year, but I dunno. Maybe I'll hold off.
  11. dhc6twinotter

    42080 Forest Harvester

    Just out of curiosity, do the new valves move any easier than the old ones? The old ones could get a bit stiff at times.
  12. dhc6twinotter

    [MOC] Small 4-axle mobile crane - finished!

    Great looking model!
  13. The great thing about the new selector is that it acts a bit like a worm gear and locks the driving rings in place. It would be very hard, if not impossible, for it to be back driven. Plus, it's more compact and easier to incorporate into models. Win, win, win all around. This is the best new part in ages.
  14. dhc6twinotter

    [MOC] Mini and 1:8 scale W16-engines

    The "W" engines that VW, Audi, Bentley, and Bugatti use have four cams and one crank. When looking at the block from one of the ends, it looks like a V. The two cylinder heads are really wide though. These "W" engines are basically designed around two VR engines mounted together (The VR engines are very narrow 15 degree V engines used in many older VW vehicles. Despite cylinders/pistons being in a V configuration, the VR engines only have one cylinder head). Bugatti did use "W18" engines that did have three banks of cylinders (three heads, three exhaust manifolds, three intakes, etc) in some of the '90s concept cars, but I don't think any made it to production.
  15. dhc6twinotter

    [WIP] Mack Granite GU-813 - Review added

    This is very nice! One of the best looking Technic long-nose trucks I've seen. This looks far better than the Lego one just released.