Showing posts with label Bullet. Show all posts
Showing posts with label Bullet. Show all posts

Saturday, 16 May 2015

Riding The Bullet – Radio 4 documentary detailing the Royal Enfield Bullet



Sit back, listen and enjoy the dulcet tones of BBC Radio 4 on a journey through the history of the much-loved Royal Enfield Bullet… Riding The Bullet presented by Steve Carver.

Production notes: first broadcast on 13 July 2005, I recorded the documentary from the radio during a repeat on 23 July 2011.

Monday, 9 March 2015

Saving a Lady

Tappet cover wing nut, early-50s Bullet
Being poor and mean, I prefer to scavenge or else home-brew wherever possible so you can readily imagine my recoiling in miserly horror at the thought of shelling out five quid for something which cost pence (or rupees) to make.

Such a thing is the little gewgaw which holds the tappet cover in place on a Royal Enfield Bullet. It looks cool, mirrors the original Redditch set-up and is actually rather useful if you want access in a hurry or at times of stress. Of course if you're found wanting for lack of spanners, being able to remove the cover will be of little use – but that's to over-think the problem.

Chennai Bullets ship with a domed nut which is not unattractive but doesn't have quite the charm of the original wing nut or the repop version available from the usual sources.

Chennai Bullets ship with a domed nut
Aftermarket repop wing nut







The aftermarket nut is a casting, drilled and tapped through the fat part (much like, I imagine, Kim Kardashian). I don't have a furnace but I do have a lathe though I don't have a ball turning attachment (that's something else I need to make). What all this equates to is I can't cast my own wing nut but I can turn something approximating it in use if not in aesthetics but which won't have the attractive ball-end on the wing.

Clear as mud?

Scrabbling about the workshop for some scrap I lit upon a length of 13mm hex bar. I have a number of these waiting for future projects but for this particular one, the limelight had arrived. Once chucked, I cut off the threaded end, faced it and put on a slight chamfer.

Scrap 13mm hex bar


First steps…
The stud for the cover has an M8 thread (at least, for those Bullets made after 1999). I selected a 6mm drill as a pilot and drilled a suitable hole. Next I used a 6.9 tapping drill for tapping M8. Then I tapped the hole taking care not to snap the tap (I wanted a blind hole). That done, I used a 10mm drill bit to put a little chamfer on the thread.

Drilling the nut…

…and tapping it M8
Setting aside the body of the wing nut I rummaged up a bit of 8mm steel rod, measured a length I deemed suitable to make the 'wing' and set to on the lathe, turning it to a diameter just below 6mm and then threading it M6. I left the other end slightly larger in lieu of a ball.

Turning the 'wing'

Threading the wing M6
Back to the body, I used a centre drill bit on my pillar drill to make a pilot hole, a 5.2mm tapping drill to take it to the required diameter and an M6 tap. I cut off the body at a suitable length put it back in the lathe to face and chamfer it, put a drop of thread locker on the wing, screwed it into the nut and the job was done.

With the thread cut…

…it's time to part off the wing
(I don't like parting off in the lathe)



The finished wing nut in situ
It isn't as pretty as the original but it does have an old-world charm that I think is rather appealing plus I saved a satisfying £5. Now I just have to figure the best way to grind the fins off the cover itself for a ’50s-like appearance.

What's that? Oh, cockney rhyming slang for a 'fiver'. Lady Godiva…

Tuesday, 23 December 2014

Royal Enfield Bullet Lucas ammeter ‘conversion’ – free


Ladies and gentlemen, the Royal Enfield instrument panel – 'casquette' in Enfield speak – the Redditch company's take on Triumph's nacelle, shown here in its largely faithful Indian-built incarnation. Largely, because there's a couple of glaring exceptions to its appearance and it isn't difficult to guess which they are…

Both speedometer and ammeter are decidedly unappealing but of the two, the OE ammeter is worst. With its lumpen green and red detail the best that can be said of it is that it's visible – much like dog shit sprayed with fluorescent paint is visible. The speedo doesn't exactly shout 'period' but it is, arguably, a little less offensive.

For many owners, riding is what owning a Bullet is all about and the instruments exist for reference and no more – bollocks to appearance. For others, the machine is a canvas on which to paint their notion of a 1950s mount, some even going so far as to rebuild the bike with a rigid rear courtesy of Hitchcock's catalogue of tempting bling.

I fall somewhere between the two: I like period appointments but I'm cheap and mean, which means I'd rather put the cash in the tank or at the least, spend it on practical upgrades. And wherever possible I prefer to roll my own.

Ammeter looks even worse now
Okeh, so I was tempted by a Smiths Chronometric knock-off on ebay at under 20 quid. Two minutes to fit, looks cool and suprisingly accurate according to GPS (the odometer however is…well, shit, frankly).

To complement it, I wanted a Lucas ammeter but for a cheapskate the cost is prohibitive, and no mount of jumbling turned up one at suitable voltage any cheaper.

Time to think laterally…

It occurred to me that the OE ammeter is dirt cheap when new and practically giveaway, used, on ebay after a Lucas upgrade. Cheap equates to candidacy for experimentation which meant I could experiment with mine and replace it cheaply if it all went tits up as the say. After all, there's nothing actually wrong with the original, it works perfectly well as an ammeter.

With access to any kind of DTP or drawing software and a printer, you can draw a new face which looks just like a Lucas or Miller instrument with which to transform your original. Find inspiration by looking at vintage ammeters on ebay and draw one according to what you like best. Here's what I chose:

I found this ammeter on a bike for sale on ebay, copied it using Adobe's InDesign…

…and printed off plenty of examples as back-ups

Removing the ammeter from the bike is as easy as disconnecting the battery and undoing a couple of nuts from its terminals. With the ’bars at left lock you can access the instrument at the headstock as well as from the front of the casquette with the headlamp removed. Once undone, the ammeter is pushed upwards to free it from the bike. Be aware that it's a tight fit and may require some persuasion. Don't be tempted to strike it with anythng hard – the casing is very soft alloy and easily warped or split.

Now the fun starts. There's no easy way to disassemble the device because the bezel is crimped in place. However, with a jeweller's screwdriver, you can carefully work the soft alloy of the rim, gradually loosening it until it comes free, revealing the face within.

After cutting out a slot for needle deflection I carefully pasted the new face into place. The bezel went back on with a bit of persuasion and I used the rounded end of a pencil to pinch it down and secure it. A smear of clear bathroom sealant around the body and the face of the ammeter sealed it. Back in place and connected up it worked a treat and looked pretty good too. I suppose the new face may fade over time but with a bit of luck fading will add patina for greater 'authenticity'.

A marked improvement over the original (reflection from overhead strip lights)