General Part Discussion

[Lyichir]

4 minutes ago, SNIPE said:

Soo, maybe an icons/creator fishing reel 3 in 1 set using the new 20T sprocket gear, maybe with a 2 speed gear box and adjustable drag but without damaging rubber parts

 You know, that's something I never thought of building but now that you mention it it could make an interesting build!

As a Ninjago fan I also wouldn't be surprised to see that sprocket gear in some sort of spinner mechanism before long (since getting something spinning fast and continuing to spin when it's released can be key for those sorts of play features)

Edited Tuesday at 08:39 PM by Lyichir

[2GodBDGlory]

Wow, interesting stuff! So apart from the massive wheel, we get:

- ~11L link, which will probably have some good generic uses

- 64T gear, which probably won't be useful in the average MOC, but should open up some new possibilities

- 20T freewheel gear, which seems really revolutionary! That seems like a seriously useful and unique part!

4 hours ago, Jundis said:

@Divitis and @2GodBDGlory:

This could be a chance to build your CVT ;-)

True, true!

Do we have any thoughts about that DBG new-style wave selector part? In the past when it was recolored from blue to orange, it was actually a different mold, with a different shift pattern. Any chance this is also a new mold, with a different shift pattern for this year's supercar? Or is it just a straight recolor.

[Timewhatistime]

46 minutes ago, Jockos said:

This new gear might be used for radio controlling pneumatic valves as when the valve reaches its end point there wouldn't be any harm made to the system.

I don't think so.

The ratcheting mechanism of a freewheel doesn't work like a clutch gear (as e.g. in the white 24t gear).

So when the valve reaches its end point, the freewheel mechanism will still press on it, causing a lot of stress for the parts.

[2GodBDGlory]

6 minutes ago, Timewhatistime said:

I don't think so.

The ratcheting mechanism of a freewheel doesn't work like a clutch gear (as e.g. in the white 24t gear).

So when the valve reaches its end point, the freewheel mechanism will still press on it, causing a lot of stress for the parts.

Or if you're rotating it the other way, there's only going to be a minimal amount of torque available before it starts to freewheel

[HydroWorld Outlook]

28 minutes ago, R0Sch said:

You can easily calculate the exact tire and wheel size from this. Tires are 24.4cm in diameter meaning 30.5L and the full wheels are 22.4cm in diameter meaning 28L. Hailfire was 26.5L.

So they are bigger than the Hailfire Droid Wheels! Awesome! 

13 minutes ago, Timewhatistime said:

So when the valve reaches its end point, the freewheel mechanism will still press on it, causing a lot of stress for the parts.

Yes, that is also true. However, it's definitely a good part for making sure certain components can only spin in one direction, without having to build and rely on a custom ratchet. That opens the door to many new mechanisms that were not possible before.

Edited Tuesday at 08:52 PM by HydroWorld Outlook

[Jockos]

44 minutes ago, Auroralampinen said:

Um, it might be not that usefull. In the real life you cannot pedal backwards and in the lego lifestyle video when he is spinning the pedals backwards the wheel is still like it should be. So if you really want to only make motorized pneumatic switch working one way it will be revolutionary. But you still have to manually switch the switch to lower the cylinder:). 

EDIT. Since i want to be sometimes really technical. Track bikes which rides on oval tracks and penny farthings plus unicycles and some ordinary bikes can have/has only fixie gear without any freehubs. That one you can technically pedal backwards thought its really difficult and the lego road cycle isin't a fixie so it will only work one way as the free wheel/hub should work:). 

 

11 minutes ago, Timewhatistime said:

I don't think so.

The ratcheting mechanism of a freewheel doesn't work like a clutch gear (as e.g. in the white 24t gear).

So when the valve reaches its end point, the freewheel mechanism will still press on it, causing a lot of stress for the parts.

 

4 minutes ago, 2GodBDGlory said:

Or if you're rotating it the other way, there's only going to be a minimal amount of torque available before it starts to freewheel

Ahh, I see, thank you! 

[R0Sch]

3 minutes ago, 2GodBDGlory said:

Or if you're rotating it the other way, there's only going to be a minimal amount of torque available before it starts to freewheel

The new freewheel gear clearly has an inner core with axle hole connected to the wheel (green) and an outer shell with the 20T gear (dbg). I assume it will be something like this in terms of main principle:

[HydroWorld Outlook]

20 minutes ago, R0Sch said:

The new freewheel gear clearly has an inner core with axle hole connected to the wheel (green) and an outer shell with the 20T gear (dbg). I assume it will be something like this in terms of main principle:

Interesting. Given that the setup is shown here is the most likely principle used for this bicycle's rear wheel, and given that the core is bright green like this, I am starting to wonder if this freewheel mechanism might actually consist of two separate parts, and this bright green core inserts into the silver toothed shell mold. Perhaps this could be the case? They could also be integrated into a single piece as suggested here, but if they're separate elements then that would magnify the utility of this new part, or set of parts. The green core would be a relatively tiny piece by itself, but this is an 18+ set after all, so it wouldn't surprise me. 

Edited Tuesday at 09:14 PM by HydroWorld Outlook

[Ngoc Nguyen]

I can use this freewheel gear in my next mobile crane.

[aeh5040]

I might be wrong but it looks to me as if the holes at the end of the spokes are slightly angled to allow for the offset - look at the shadows on the table. If so, this shows nice attention to detail, but I do wonder about wobble, and it will limit their usefulness for anything else.

Interestingly, the 64t gear will only mesh exactly in grid with a 16t (for a 1:4 ratio) or with itself.  Of course there should be plenty of scope for meshing with other gears at diagonal approximations to the right spacing, as usual.

Very excited about the new parts, in any case!

Edited Tuesday at 09:26 PM by aeh5040

[R0Sch]

19 minutes ago, 2GodBDGlory said:

Do we have any thoughts about that DBG new-style wave selector part? In the past when it was recolored from blue to orange, it was actually a different mold, with a different shift pattern. Any chance this is also a new mold, with a different shift pattern for this year's supercar? Or is it just a straight recolor.

It's the same shift drum profile profile (checked both sides). Just a simple recolor of 3584 for "nice part usage" and possibly in the upcoming Koenigsegg 1:8 as well.

[N-4K0]

4 hours ago, R0Sch said:

Nope. The pedals are dbg and so is the 4L axle with stop. It's just a brightened rendering side-effect. You can see the real color on the lifestyle shots better and compare to the lbg chainring. The chain is flat silver as mentioned in the other post.

Ah. I was debating whether it was DBG or LBG as a recolor didn't really seem necessary, but thanks for the correction

Edited Tuesday at 11:58 PM by N-4K0

[burak]

11 hours ago, HydroWorld Outlook said:

The second part I mentioned—41mm wheel (part 68327)—has a central axle hole as well as six pin holes around it, so that piece would fit the criteria, but modifications at the back of the bicycle would be required in order to make space for since it is slightly larger and significantly thicker than the Wedge Belt Wheel elements.

Good point.

Soon you'll also be able to use the new 30.4mm D. x 20mm wheel introduced in the tumbler set in August. That one has an axle hole in the center, 6 pinholes and only a slightly larger diameter than the pulley wheels.

 

10 hours ago, aeh5040 said:

I might be wrong but it looks to me as if the holes at the end of the spokes are slightly angled to allow for the offset - look at the shadows on the table. If so, this shows nice attention to detail, but I do wonder about wobble, and it will limit their usefulness for anything else.

Interestingly, the 64t gear will only mesh exactly in grid with a 16t (for a 1:4 ratio) or with itself.  Of course there should be plenty of scope for meshing with other gears at diagonal approximations to the right spacing, as usual.

Very excited about the new parts, in any case!

If I got it right the upper and lower pinholes on either end of the spokes are not on the same height if laid flat, but instead have an offset of 1,5 studs. In that case the spokes would need to be solid and not flexible to make the wheel rigid, but we'll have to wait for a review to confirm it. It's interesting to see so many links with offsets introduced recently, like 5429 and 7684. But I'm happy to see more of them, as they enable new ways to form solid connections, e.g. in car chassis.

[Jurss]

Most probably, spokes are rigid, as You can't tension them like on real bicycle. And wheels would be really wobbly with some soft spokes.

[Lipko]

Um, I think it is possible that the spokes are actually made of rubber, and and they will be tensioned. Some pixel geometry whizkid should measure.

[msk6003]

Now I realize 64t gear can mesh with 16t directly and make 1:4 gear ratio.

This gear will be super useful. Even I still want 32t.

[Lipko]

17 minutes ago, Lipko said:

Um, I think it is possible that the spokes are actually made of rubber, and and they will be tensioned. Some pixel geometry whizkid should measure.

Yup, I don't know how much the perspective distortion is, but the spokes assembled into the wheel seem to be half stud longer than the spokes on the table.
I'm at work, I cannot attach pictures.

Edited 23 hours ago by Lipko

[aeh5040]

36 minutes ago, Lipko said:

Yup, I don't know how much the perspective distortion is, but the spokes assembled into the wheel seem to be half stud longer than the spokes on the table.
I'm at work, I cannot attach pictures.

It would certainly make sense if they were stretched slightly, and if the material was chosen accordingly.

[Jurss]

1 hour ago, Lipko said:

think it is possible that the spokes are actually made of rubber, and and they will be tensioned.

Bur rubber is still elastic, it is not like steel or carbon spokes on real bicycle. Then better would be those string like connectors. 

[Lipko]

1 hour ago, Jurss said:

Bur rubber is still elastic, it is not like steel or carbon spokes on real bicycle. Then better would be those string like connectors. 

I'm just guessing here. It might be some fiber reinforced rubber that suddenly stiffens around the half-stud stretch. But we will see soon I guess.

[2GodBDGlory]

14 hours ago, R0Sch said:

It's the same shift drum profile profile (checked both sides). Just a simple recolor of 3584 for "nice part usage" and possibly in the upcoming Koenigsegg 1:8 as well.
 

Got it, thanks! A more neutral recolor is nice to have

[Stereo]

Really depends how much friction it has, and how far it has to turn to ratchet to the next step, but a one-way clutch is the central component of a clock so it might allow more compact pendulum clock designs.

 

As long as the spokes are a whole number length it'd probably be fine to rebuild it with thick beams if you want more strength, and use fullsize pins at the hub.  They're using the new spoke piece and thin pulley to match aesthetics.

[Davidz90]

13 minutes ago, Stereo said:

one-way clutch is the central component of a clock so it might allow more compact pendulum clock designs

Exactly this. Also ,the 64t gear will be a very useful addition for making large gear ratios, especially if it can be matched with 8t at some reasonable spacing. Even with 16t (which meshes with it at a regular spacing), a chain of 1:4 ratios (16:64) may have lower friction than multiple 1:5 (8:40). 

[R0Sch]

Every material has a yield strength and can be deformed elastically without permanent deformation, even brittle materials like glass. But I highly doubt the part designer chose the same elastic material as this soft hose for instance, which is made of MTPO or TPU.

My best guess as a mechanical engineer is that the spokes are made of POM (same as pins and axles) which is a bit flexible but still strong enough to withstand repeated assembly /disassembly without breaking and a high enough yield strength (min. 60 MPa) and min. 9% elongation at yield, 30% at break.

[aeh5040]

1 hour ago, Davidz90 said:

Exactly this. Also ,the 64t gear will be a very useful addition for making large gear ratios, especially if it can be matched with 8t at some reasonable spacing. Even with 16t (which meshes with it at a regular spacing), a chain of 1:4 ratios (16:64) may have lower friction than multiple 1:5 (8:40). 

Actually the 64t monster is looking a bit awkward for spacing.  Besides the 16t at exactly 5 studs, the only reasonably good fits in the 1:1 studless technic grid seem to be:

8t at (4,2) (i.e. 4 studs across, 2 studs up), 0.03 studs too tight

24t at (5,2), 0.11 studs too tight

36t at (6,2), 0.07 studs too loose 

I did not investigate using technic bricks and plates yet.