No ovalization at the headtube based on Platy pics I can find, there's a lug there. Which is one of the cool things about TIG and fillet joints, the builder can mess about with the tube all they want without having to find or shape a lug for it.
On Tuesday, January 26, 2021 at 2:22:38 PM UTC-8 Paul Clifton wrote: > Yep, that shows it. A vertical oval near the head tube, transitioning to a > sideways oval as it gets towards that bottom bracket. > Does the Platypus do that? > > Paul > > On Tuesday, January 26, 2021 at 3:31:53 PM UTC-6 lconley wrote: > >> This? >> [image: Rosco_Baby-52_1600x (2).jpg] >> Laing >> >> >> On Tuesday, January 26, 2021 at 4:26:05 PM UTC-5 Paul Clifton wrote: >> >>> I can't tell from the picture, but I was talking about the tube that >>> connects the top tube to the bottom bracket. I think one of the early >>> drawing of the platypus showed it though. >>> >>> On the baby bike, the tube is an oval near the head tube and near the >>> bottom bracket, but it is circular in the middle. The plane of the >>> ovalization changes, so if you look straight on from the side of the bike, >>> the tube looks bigger near the head tube and skinnier at the bottom >>> bracket. But if you look straight down from the top of the bike, the tube >>> looks fatter near the bottom bracket and skinnier near the head tube. >>> >>> I can't even draw it with a pencil to show you because my lines aren't >>> good, and it's barely perceptible in photos. I've been trying to capture it. >>> >>> So like, if you have a playdough snake laying on a table. Smash it >>> against the table near the head and pinch it near the tail. The head gets >>> flat in one direction. The tail gets flat 90 degrees. Now imagine doing >>> that with a metal tube. >>> >>> Paul >>> >>>> >>>> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/64e4a6ef-101b-4a66-ac6e-1457f874b5e5n%40googlegroups.com.
