Check these little cuties (Hitachi Carb drain screws)

From a german XJ-rider who´s apparantly good with a lathe:

 

I like mine better. I didn't start with an already existing setscrew... I started from scratch :

 

Both sets are nice........the originals just plain suck.....

 

They do, if you think that's a Plhilips head on them. Otherwise they are just fine; not as pretty to look at though.

 

However, the others are much easier to turn out with an Allen wrench vs. a JIS screwdriver.....

 

Rice_Burnarr: nice, when you sell the bike you should keep those.

 

Haha! Of course I'm keeping them! If I were to value my labor as it would be on the open market, I'm into those screws for about as much as my bike is worth. The real pain is that blind hex hole. I don't have the equipment to do it right, so I resorted to brute force and ignorance. Those I've got.

 

You´re welcome to like whatever you want, bro´; my reason for posting is that I hadn´t seen this (quite elegant, IMO) solution for an allen-headed replacement screw before, and I thought they might inspire to make or get made if needed

I like these ones because: they are well- and (almost) locally made, extremely fair priced and: Laying here on my desk, ready to be installed

 

Chacal sells them.....it would have been a lot less labor by buying them......

 

Cool! I like the ones you posted too!. I just like mine better.

 

Rice_Burnarr: rotary broach or EDM not in your bag of tricks? mine either, so i use store bought screws. how do you do it?
Finn: i thought about using set screws but their harder than Chinese algebra and i don't get along with 3mm hex keys. those are nice and it's good to support your local guy
fiveofakind: sometimes labor and money have nothing to do with it..........that's why we don't have 2012 Hondas

 

Clearly would have been way less labor to buy them, but Chacal doesn't sell what I made. Mine are different.

Mine incorporate the O-ring feature and they also sit flush with the outside of the bowl once installed. Details that are not currently available elsewhere at this time. You know it's not just about the money, right?

 

I completely understand.....it is the self satisfaction of making it yourself...regardless of time & cost......and that is priceless....

Send me four of those...?????


Chacal's screws:

 

Who me ?
i'am building a rack from parts now i'll see if i have 4 left over

 

Polock, A rotary broach is exactly the tool I would add to my arsenal if I were to attempt something like this again. Not currently in my bag of tricks, but it's on the list of future additions. An EDM would be fantastic, but I don't think I'd ever be able to justify having one of them here. I'd have to earn real money and stuff if I did that.

I mentioned brute force and ignorance above... Machine a hex punch out of O1. Harden and temper it. Drill a pilot hole. A little lube, and then cold form the hex shape in a little fixture on the hydraulic press. OK... So I got the ignorance, but the brute force was hydraulically assisted.

 

wow, for a minute there i thought you were going to do that blacksmith thing with a forge and a big damm hammer with sparks and bellows and smoke and all that medieval stuff

 

Now that would make a good u-tube video!

 

OK then there was a little bit of that medieval stuff... On my first attempt, instead of cold forming the hex hole, I tried to hot form it by heating the pre-drilled slug with the Oxy-Acetylene torch first before driving the punch into the hole. Didn't work. All that resulted was a punch half welded into the hole and once I managed to extract the punch from the hole it was clear that the heat resulted in as much metal moving on the punch as on the workpiece.

Didn't look quite like the blacksmiths shop, but there were some sparks flying and hammers swinging though!

Not sure I agree. I'm not camera friendly...