Tune-A-Fish
BOTM LOSER Proudly Deplorable
Re: Yamaha rd350 road racer
How about cutting in dowels for apposing head bolts?
How about cutting in dowels for apposing head bolts?
jpmobius said:You can still center up the head and drill for pins, and you can with care make additional heads fit the pins in an existing pinned cylinder but it isn't convenient. Hollow dowels around the head bolts would be great, except there is still a fixturing problem with centering up the heads on the cylinders. Not actually a problem, just a pain as regardless of how you do it, you have to make some sort of fixture to precisely center the head so you can bore holes for the dowels. Little pins are easier because you can just take a gun drill (which is just a long twist drill) and drill between the fins on the head directly into the cylinder once you have it jigged up. You could do the same through two of the head bolt bores if you don't mind the removal of so much material - Air cooled RD heads pretty commonly crack at the head bolt bores as it is - so personally I go with some small pins. I use some small spring pins - also called tension pins, split pins expansion pins etc. - which are spring steel rolled into a cylinder with a split down one side. Roll pins which are like a little sheet rolled in to a dowel would work fine as well or even just a plain steel solid pin. I drill the holes through both head and cylinder to the diameter of an interference fit and then bore just the head to a tight slip fit. That way the pins stay in the cylinder. You have to be quite careful where you drill to make sure there is enough materiel to support the pin in the cylinder.
Yeah, I was happy to have an extra set in case something went wrong. There was and is still a great possibility that it week happenSav0r said:Wasn't say yours are junk, more so that I'd probably mess the machining up and I'd rather not do that to good cylinders.
Maybe they were at some point ha, then the guy put them on feebaydeviant said:Orange is pretty.
Did this come from a dumpster?
Haven't said too much style wise on this, but I'm not going to go with a pristine finish on this one. The fairing has a been there and seen a thing or two look to it, and the bike does too, so for now I'm leaving it that way. Gonna build it mechanically sound (as much as a smoker can be) and leave the rest pretty sweaty. Kinda like I "found" an old race bike from back in the day and just washed it up.Tune-A-Fish said:When you get a set all done you should sent them and the heads to restocycle for a vapor blast carbys too!
hurco550 said:Haven't said too much style wise on this, but I'm not going to go with a pristine finish on this one. The fairing has a been there and seen a thing or two look to it, and the bike does too, so for now I'm leaving it that way. Gonna build it mechanically sound (as much as a smoker can be) and leave the rest pretty sweaty. Kinda like I "found" an old race bike from back in the day and just washed it up.
That said, those vapor blasted parts you post do look great! Maybe if I decide to tear it back apart and make it shiny someday I'll go that route
Absolutely. And that's any project. I remember that feeling when I was building stamping dies, and the 95% 5% holds true there as well. My boss would come out day after day asking why the die that "looked" finished wasn't making parts.teazer said:When we think a project is 95% complete, in reality we are really only half way there.
Ha yeah my projects and other people's tooVonYinzer said:Hey... At least your projects are in the same state as your garage lol.