(2022-04-08, 16:57)Thom Kok Wrote: oops. I meant to say that if the length of each hose is already correct right now as you say, then I should send a message to Vincent to tell him it is alright to add them to the github repo. The naming is fine. Me and Vincent thought that the length was incorrect. This was probably the reason why the hoses mentioned by Vincent were not added to studio yet. Your desired change looks good. It would be great if this gets used instead of the current version.
Got it. Well, the 13L hose on LDraw has 41 ribs and is 255 ldu in length, which equals 12.75 studs long and 102mm. That's a hair shy of the 102.5mm I think it should be, and 2mm short of what TLG considers it to be (104mm, which would equal 13 studs, 260 ldu or 41.6 ribs). However, photos of this part in real life show a range of 38-41 ribs, and of course it also depends on whether the particular specimen you measure has been cut exactly at the midpoint between ribs.
So, in short, there are a number of different lengths this part could correctly be, and the LDraw part 71645 is one of them.