when i was fettleing my primus96 i tried to get out the nrv with a nrv wrench key but the nrv was so tight or seized in the pump the tommy bar started to bend and then slipped of the nrv making it impossible to get out what with the extra tollerence the key had. So i decided to make a wrench my self from a peice of 12mm diameter steel bar i cut the slot just under sized from a spare nrv i have then filleing the slot till it was a real tight fit.The tommy bar was made from a old cheap worn out screw driver in which had to be cut with a grinder being hardened and tempered and the ends heated up till red hot and pinching each end in a vice flangeing the ends.And when i used it to take out the nrv from my primus 96 it removed the nrv no problem 10 inches long plenty of leaverage and a lot more substantional than the one what was the original i had.
Hey, Mr. O.! Nicely done! I, too, made an NRV wrench, once, but unfortunately, didn't have great luck with it. The NRV in question had already been too badly damaged for anything to work on it. Still on the docket for fettling..... Take care, and God Bless! Every Good Wish, Doc
Many thanks doc mark that was what i was afraid of the nrv being to badly damaged i paid £35 for it and it was made in 1935 and i whould of had to desolder the pump if i had a chance to restore it but another beutifull work of art put back in use what it was designed for many thanks doc mark
Brian, That's a nice tool you made. I messed up an Optimus 48 NRV and a Primus 96 NRV with the Optimus 111T "NRV Tool". A friend of mine then made a tool at home which didn't quite work, and only made matters worse. I recently gave up and bought the two sizes that are available from Base Camp. I have to go back and try to remove the two messed up NRVs. Maybe, like yours, they will come out. Thanks for the encouraging story. I HATE to damage a stove. Breaks my heart, almost. Best Regards, Al
Hi al thank you for your complement if you make one your self you can make it a lot stronger like the one i made make sure its a tight fit on the nrv.What i did to get the nrv out was to clamp the tool in a vice put the 96 tank over the tool i made sure i pushed down on the tool firmlly and slowly turned the tank with caution making sur i did not damage the tank in any way and it came out fairly easly and good luck with yours hope it goes well many thanks
many thanks gary for the compliement that is good common sense there about allways making sure you use a lead washer i have a bout 4 nrvs all with lead washers on plus several springs rubber buttons and spare lead washers a ruber washers for the nrvs which i have purchased from www.pelam.de you can buy the springs washers and button all seperate from that site these are all verry handy to keep in stock once again gary many thanks for the great advice
Hey Gary That's a great tip for the lead washers. I especially like the idea of trimming the lead while it is on the NRV.
I've found 2 of those tyre balancing weights on the road side with the intention of making gaskets for riser tubes but found that they have a non lead clip/hook built in to them. How would one go about separating the lead from this clip? please bear in mind that I'm basically cr%p at anything beyond the use of a hammer, and even then ....
Hi, I believe that the use of lead balance weights for tyres is now outlawed in the UK, and probably the rest of Europe. The modern ones are either steel or zinc alloy. You won't be able to make good washers from with either of these! I do know that a friend had some success with NRV washers made from the thick metal foil seals used to cover the corks on better quality wine bottles. Best Regards, Kerophile.
Hi Kerophile I have plenty of sheet lead, but I thought the idea of putting a hole in a samll piece and then trimming off with scissors was a great tip.
