Happy New Year, I've looked all around the forums and am drawing a blank, so hopefully you guy's can help. I'm looking for a replacement pump cup for my KampKook stove. The inside diameter of the pump cylinder is 17 mm or 11/16 (0.6875) inch. Can you recommend a place where I can buy one or two of these. Price is important, 'cuz I haven't worked in months. Now I'm still trying to revive the original cup, which is temporary at best. It's close to 90 years old, and while still in one piece, it's about a half a kettle away from complete disintegration. Thanks for your help, Perra Hunter Ps. Has anybody see that kind of a shelf before?
Hey PerraHunter, you need to look no further. Our very own member Sefaudi makes the best pump leather around. Look for him on the members section and send him a private message. He does sell it also on Ebay but cheaper direct orders and you can do PayPal. Ron
Yes, Sefa's pump cups are better than the originals. You can also purchase high temperature fiber gaskets from Kerophile and viton gaskets and pips from Spiritburner. I have done business with both of them and the products are excellent.
Hey, Perra Hunter, I, too, agree that Brother Sefa's outstanding pump leathers are better than original equipment! I've used them for many years, now, and as long as Sefa keeps making them, they will continue to be, without question, my pump leather of choice!! They are simply the best available, anywhere!!! Good luck, and God Bless! Every Good Wish, Doc
Mark I will say I haven't had the pleasure of using any of Sefa's cups but They are the cleanest looking very sharp and crisp. Better than most factory made I have seen. Dan
Hey, Dan, I'll gladly send you one to try, if you'd like it. Optimus? Coleman? Let me know, and I'll check my stash for one to send along. Once you try one, you WILL be hooked, though, so be prepared for that!! 8) PT me with your mailing address, if you want to try one of Sefa's outstanding leathers, and I'll pop one in the Post for you. Take care, and God Bless! Every Good Wish, Doc
Hi, PerraHunter Of course you could always have a go at making your own pump leathers. It's not difficult or particularly time consuming nor do you need any fancy tooling. I use a/ a short piece of 15mm (1/2") copper pipe and a piece of brass tube with the same I.D. as the pump tube to make standard sized cups. You will need some leather (pigskin) of about 1.5mm thickness cut oversize and soaked in water for 1/2 hour. This is then centred onto the brass tube (rough side down)and pushed in with the copper tube - a smear of washing up liquid in the tube will help to lubricate the operation. Leave assembled until the the leather dries and then dismantle and trim. The hole for the pump shaft fixing can be punched with any suitable sized tube sharpened to an edge - I use sections from old telescopic car aerials. A search on here will find more extensive instructions. Dave. Dried and trimmed leather. Leather removed ready for hole punching
I've not tried Sefa's pump cups as I haven't needed but one lately, so I made it. We used to make them years ago and nearly any type of leather can be used....old shoe tongue, old leather purses, old belts etc. Best, Bob
I only do the VITON & Lead washers but I can vouch for Kerophile's burner washers & Sefaudi's pump leather. Non finer
Nice photos of your pump leather tools! How does one make that nice flare on the brass tube? In case I can't find the right size brass tube, how do I contact this Sefa person? This is my first post on the CCS site. Thanks, Ken
You can find the right sized tube, use the pump tube of the stove, put the leather on the pump cup holder (backwards) and push it into the tube. I use Sefas leathers too (and my own), as the price and quality are excellent. But they are easy to make and it is a nice skill to have up your sleeve. You can contact Sefaudi (Sefa) here...Sefa for pump cups BTW, telling new members that Sefa sells pump cups is useful info, but using his full user name would make things a lot easier for those not in the know Dan
Ken (shellback), check at American Science & Surplus, 68th & Oklahoma for the brass tube, ask for Andy, tell him Murph sent you! The flare can be done with a plumber's copper pipe flaring tool, if you need one flared, send me a PM, and I'll flare it for you at the hardware store where I work one evening. Murph
shellback, Welcome to the site Ken and thanks. I just happened to have a large steel ball bearing in my junk box. This was lubricated with a smear of grease, placed on the end of the tube and the assembly squeezed in the bench vice until the flare looked about right. I annealed the end of the brass tube first. The flare makes it easier to feed the leather + the copper tube 'plug' into the tube and also allows some tolerance if you have been too generous with the size of the leather blank. Dave.
. Forgot to add that the copper pipe (or whatever you use for the 'plug') should have a small radius on the business end to avoid cutting into the softened leather. A radius is formed as matter of course if you use one of the simple rotary tube cutters supplied by plumbers merchants etc. Dave.
Wow,thanks to all for the great response to my questions on making the pump leathers. I've got the copper pipe, and thanks to Murph I might have a nearby sorce for the brass tubing and a way to get it flared! I just need to scrounge up some leather now. I think some nearby craft shops might have this sort of thing as well. Ken
Hi Dave, Murph, and Dan, I was able to get my pump cup leather to function by soaking it in water overnight. I still want to make a spare or two. I made a first attempt at firing up my Optimus 45 that's mounted in a Sea Swing and things went poorly. I did the preheat with alcohol and pumped in plenty of pressure (?) but all I was able to manage was a very sooty flame. I have the silent type burner with the three series of vertical holes. Do you think this might be an alcohol burner? Maybe I should try different fuel? Ken
I'd try Coleman fuel at this point, Mall-Wart on 27th & Morgan has it for a good price, probably the cheapest here in town. Murph
I thought the Optimus 45 was a Paraffin (Kerosene) burner ?? https://classiccampstoves.com/threads/9292 Or are the 'S' and 'SL' versions different ?? Dave.
