You can say one thing about Hitchcocks, they don’t hang about. The package arrived yesterday morning and I hastened to the shed in my lunch hour to see what I could do. Having tried unsuccessfully to unscrew the fuel tap plunger, I thought it would be worth seeing if the shaft was a friction fit. It doesn’t seem credible that a perishable cork seal would be fitted to a shaft you cannot dismantle and the contingent availability of replacement seals adds up to a serviceable part in my view.
Well, I went easy on it, from previous bitter experience - locating the stop end of the plunger in a handy slotted plate (part of a cheap Rolson T-square) clamped in the vice, using a pair of snub-nosed pliers to then grip the nipple - but pull as I might, the bugger wouldn’t shift. I stopped after one or two good goes, sighed as I inspected the burrs left in the brass, and reached for the phone.
It’s nice to talk to the guys at Hitchcocks, they really seem to get it - which is not as rare with bikes as it is with car parts departments, I have to say. You can tell they have hands on experience and appreciate that their knowledge base drives repeat business. I tell the guy where I’ve got to and what I’ve found out and when he says that the spare corks are stocked for vintage taps, which do come apart, and that the replacement ones don’t, he senses my dissatisfaction.
“I’ll pass the point on,” he says, “we don’t manufacture these pieces and if we find that people are generally dissatisfied with them, we stop stocking them. What you can try is reducing the size of the stop end before you attempt to squeeze the cork on. I haven't tried this myself but I've heard it can be done. Sorry, but that’s as much as I can tell you. You definitely shouldn’t cut the cork and try gluing it back together, don’t think that’ll work, not for a minute.”
I thank him and realise that this isn’t a half bad idea, so I set to work on the stop end with a file and in about 20 minutes it’s all looking a lot more plausible. End of my lunch hour though so I drop one of the seals in hot water to soak for the afternoon and head back to the office. I have a designer chrome wine bottle stopper, a cone with a rubber ‘O’ ring, which I shove into the hole in the seal to sink it and simultaneously begin the stretching process. It’s a little taste of no journey wasted, the cork soaks and stretches while I finish my last report for the Olympic Park.
The combination of actions works a treat and when I get home the seal goes on without splitting and we’re back in business (see photo). It’s a bit tight getting the plunger back in but so it should be. The grub screw is adjusted to stop the plunger from popping out again and the tank is recharged with gas. There’s a slight moistening of petrol where the old pipe union bolts onto the replacement brass tap but I can live with this and overall it looks like a successful repair job.
Poz needs his dinner so no time for a test ride. I put a fresh newspaper under the bike to pick up any telltale drips overnight and call it a day.
If all is well, I'll fill her up and reset the range trial. This is surely not the end of it, long term I should be thinking about refurbing the tank and opting for a single dual function tap feeding the carb via an elbow union, instead of two taps into a ‘T’ - the fewer connections the better. But for now I can allow myself to feel satisfied, a solid bit of problem solving, for once.