| Discussion Forum: Thread 325936 |
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| | | Author: | Gandalf68  | | Posted: | Aug 21, 2022 13:27 | | Subject: | Can you help me identify these parts please ? | | Viewed: | 103 times | | Topic: | Help | |
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| I'm having trouble figuring out what parts are used to form these "bubbles"
I thought it was 3626c + 30151b but the 30151b "dome" is too large to be able
to align 4 of them diagonally like in the picture
(There is 7 studs between the domes at the bottom and the grey "wall" at the
top)
Any ideas ?
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| | | | | Author: | SylvainLS | | Posted: | Aug 21, 2022 13:34 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 43 times | | Topic: | Help | |
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| In Help, Gandalf68 writes:
| | I'm having trouble figuring out what parts are used to form these "bubbles"
I thought it was
|
[p=3626c]
+
[p=30151b]
| | but the 30151b "dome" is too large to be able
to align 4 of them diagonally like in the picture
(There is 7 studs between the domes at the bottom and the grey "wall" at the
top)
Any ideas ?
|
I think you have a parallax problem: they ARE 30151b with 3626 inside.
The top and bottom ranks are on studs but the middle ranks are not connected
and just hold by being in quincunx.
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| | | | | | | Author: | Gandalf68 | | Posted: | Aug 21, 2022 14:33 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 31 times | | Topic: | Help | |
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| In Help, SylvainLS writes:
| | In Help, Gandalf68 writes:
| | I'm having trouble figuring out what parts are used to form these "bubbles"
I thought it was
|
[p=3626c]
+
[p=30151b]
| | but the 30151b "dome" is too large to be able
to align 4 of them diagonally like in the picture
(There is 7 studs between the domes at the bottom and the grey "wall" at the
top)
Any ideas ?
|
I think you have a parallax problem: they ARE 30151b with 3626 inside.
The top and bottom ranks are on studs but the middle ranks are not connected
and just hold by being in quincunx.
|
Oh thank you very much for the confirmation  I indeed thought for a moment
that the middle ones were in quincunx but i was not sure because the domes being
slightly leaned i wondered if they could hold without slipping
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| | | | | | | | | Author: | SylvainLS | | Posted: | Aug 21, 2022 14:43 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 27 times | | Topic: | Help | |
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| In Help, Gandalf68 writes:
| | […]
Oh thank you very much for the confirmation I indeed thought for a moment
that the middle ones were in quincunx but i was not sure because the domes being
slightly leaned i wondered if they could hold without slipping
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Well, I just tried in Studio and you can do it without the parts colliding… but
it’s because the collision detection is lax with cylinders.
So I think real bricks will ‘squeak’ a bit, so beware of scratches between PC
parts, less with the new MABS ones I think.
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| | | | | | | Author: | rylie_aitch | | Posted: | Aug 21, 2022 14:37 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 30 times | | Topic: | Help | |
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| In Help, SylvainLS writes:
| | In Help, Gandalf68 writes:
| | I'm having trouble figuring out what parts are used to form these "bubbles"
I thought it was
|
[p=3626c]
+
[p=30151b]
| | but the 30151b "dome" is too large to be able
to align 4 of them diagonally like in the picture
(There is 7 studs between the domes at the bottom and the grey "wall" at the
top)
Any ideas ?
|
I think you have a parallax problem: they ARE 30151b with 3626 inside.
The top and bottom ranks are on studs but the middle ranks are not connected
and just hold by being in quincunx.
|
No, I think it is this:
You can tell by the lines going out from the stud holder, and the way they don’t
go around the studs at the bottom (more visible on the bottom right).
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| | | | | | | | | Author: | SylvainLS | | Posted: | Aug 21, 2022 14:49 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 39 times | | Topic: | Help | |
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| In Help, ryanaitch writes:
| | […]
No, I think it is this:
You can tell by the lines going out from the stud holder, and the way they don’t
go around the studs at the bottom (more visible on the bottom right).
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Oh, yes, you’re right!
I was too focused on checking it was a 2x2 footprint to look at other hints.
But it’s still a 2x2 part so what I just said in my other post stays true: they’ll
‘squeak’… but a bit less because the contact surface is smaller
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| | | | | | | | | | | Author: | SylvainLS | | Posted: | Aug 21, 2022 15:01 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 31 times | | Topic: | Help | |
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| Mathematical proof of why it will squeak:
— A diagonal is √(3×3+5×5) studs center to center.
— There’s 2 diameters and 2 radii on it.
— So the parts’ diameter should be 1.94 studs max (diagonal ÷ 3).
— The parts have a diameter of 2 studs… minus the usual 0.1mm on each side =
1.975 studs.
— 1.975 is greater than 1.94.
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| | | | | | | | | | | | | Author: | Gandalf68 | | Posted: | Aug 21, 2022 15:22 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 33 times | | Topic: | Help | |
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| In Help, SylvainLS writes:
| | Mathematical proof of why it will squeak:
— A diagonal is √(3×3+5×5) studs center to center.
— There’s 2 diameters and 2 radii on it.
— So the parts’ diameter should be 1.94 studs max (diagonal ÷ 3).
— The parts have a diameter of 2 studs… minus the usual 0.1mm on each side =
1.975 studs.
— 1.975 is greater than 1.94.
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For the record, i tried 51283 and 30151b on Studio and they both works fine apparently.
Though, the 51283 will look better if looking from an angle 
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| | | | | | | Author: | wyvern | | Posted: | Aug 21, 2022 14:38 | | Subject: | Re: Can you help me identify these parts please ? | | Viewed: | 34 times | | Topic: | Help | |
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| It looks to me like the clear "shell" is
In Help, SylvainLS writes:
| | In Help, Gandalf68 writes:
| | I'm having trouble figuring out what parts are used to form these "bubbles"
I thought it was
|
[p=3626c]
+
[p=30151b]
| | but the 30151b "dome" is too large to be able
to align 4 of them diagonally like in the picture
(There is 7 studs between the domes at the bottom and the grey "wall" at the
top)
Any ideas ?
|
I think you have a parallax problem: they ARE 30151b with 3626 inside.
The top and bottom ranks are on studs but the middle ranks are not connected
and just hold by being in quincunx.
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France, Grand Est
USA, Colorado
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)
