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Posts Tagged ‘shellac’

Hmm, what to do when your recycled old commuter doesn’t have fittings for a bidon cage?

Well, I found this Tioga brand handlebar mounted one in a local bike shop (LBS) – but in black… anyway, I bought it .

I was hoping for plain alloy to match the road king’s other shiny fittings and brown tones…also, on its first use the bottle bounced out on a big bump and nearly smashed due to the loose fit and springiness in this cage.

My solution was to twine it, not that it was a neat or easy job, but here goes :

as it was – black and springy

taped, twined and starting to shellac

ta daa! — rough’n’ready damping

at last – a bottle in front of me that stays put

The job was done with two single pieces of twine, and the hardest part was to finish the winding so that the twine ends don’t unravel off the double sided tape when first wet with shellac, and also to negotiate the many changes in radius of the curved shape without leaving gaps…

I cheated somewhat by clamping the ends with a bulldog clip after shellacking, then recoating gently when dry, and finally putting a spot of clear epoxy on it, just in case!

I feel that if I did another of these I could improve on this one, but am generally happy with the result. It matches the twined kickstand fairly well.

Perhaps it’s otherwise easier to twine the bottle?

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The mainly alloy stand, as purchased.

Here is a budget adjustable kick stand that I have decorated for a friend’s older bike that didn’t have one. The stand is the same type that I used on the restored Malvern Star bike featured earlier – it’s basic, but reasonable, for the $13 that it cost at a department store, provided that it is used on a firm surface and the bike is of moderate weight. I prefer these stands to the ones where you have to cut the one piece alloy leg to length, as you can’t make a mistake with this one !

Twined and partially shellacked, primer on top plate and bolt.

The reason I decorated it this way is simply because I thought it looked too plain and shiny for an older bike. The method is to tape the leg section with double sided sticky tape, wrap it tightly with white twine and give it several coats of amber shellac until satisfied with the colour. The steel top plate and bolt were painted to blend in with the red bike that will be wearing it.

The finished stand.

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Cardiff cork grips with packaging

This post is in response to some blog searches on cork grips recently – it seems that there is some interest in them !  I use the Cardiff brand grips – they also make grips in wood and leather, according to their packaging. I sourced mine from Cheeky Transport in Newtown (Sydney) which is a great little bicycle commuter oriented shop that stocks many quality accessories. The grips come raw but I like to shellac them to give a warmer colour and some physical protection.  The bikes I’ve used them on are my old modified Speedwell and a restored Malvern Star, both 40-50 years old and they are among my favourite grips. They are warm with a very slight “give” and a comfortable curved shape that fits the hand easily. I am not sure whether they could be cut down for twist grip shifters though, or what to use for cutting them, perhaps I would nervously put them on a snug fitting wooden dowel, mark first (wrap around tape ?) and cut slowly and straight with a very sharp stanley knife so the end cuts meet. Good Luck, I haven’t tried it !

the raw grips

The grips are loose fitting on normal bars and need to be secured. As I may need to remove them one day, I use double sided sticky tape rather than glue, by sticking some strips of tape over the bar and peeling away, then simply pushing the grip over the tape and right on down to the bar end, which has kept them on firmly so far. If required, a small amount of shellac could be run into the tiny gap between the grip and bar to lock it on. I haven’t tried removing grips done this way but it should, I hope, be possible.

part way through the process

Remember to check that everything is fitted on the bars and you are happy before doing the final fit as obviously it is a hassle to add or remove accessories unless they have split clamps like the brake levers on my Speedwell. A split clamping handlebar stem would be preferable too, but old bikes don’t seem to have them.  I usually give my grips about  8-10 thin coats of shellac with a 3/4 inch brush, sometimes with a couple of drops of maple wood stain added to give a brown rather than yellow tint. The grips will need to be supported, e.g. on an old set of bars while staining, and the shellac can be recoated fairly quickly but make sure it is dry first as you get a blotchy effect if the coating below is still damp and it is partially dragged off – I try coating about every 15 minutes on a dry warm day. Shellac wears off eventually and needs to be recoated after a period of time – any scuff marks back to the cork can be touched up with a few coats on a fine brush.

Split clamps on the alloy polygon levers - Speedwell.

Clean the brushes in methylated spirit, which you will also need if you have bought the shellac in flake form as it is the solvent. If you find the grips too slippery or too dark in colour they can be sanded back a little with fine sandpaper and lightly recoated. This slipperiness is only a problem for me when wearing Damart gloves, so I use the ones with no fingers to get some skin grip on the shellac – luckily I don’t live in a very cold place.

on a coaster braked Malvern Star

Happy Cycling.

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Well, I couldn’t help thinking about those drop handlebars, so I decided to have a go at restoring them. Yesterday I bought an adjustable kick stand as the bike didn’t have one. it looks too shiny, so I decided to tone it down a bit with shellac and twine, a process that I picked up on from reading “Lovely Bicycle” – ( see blogroll right ). I like the look, I’m not kidding myself that it has any practical function here, and this is the only place that I will use it on this bike except for shellacking the cork hand grips, as I think it can be easily overdone.

Shellac uses methylated spirit as a solvent and dries quickly, allowing for many re-coats, as it needs multiple coats to get enough density of colour. I first applied the double sided tape to hold the twine in place then wrapped the twine tightly and applied the shellac with a brush. It’s important to make sure the ends of the twine are in place firmly as they have a tendency to lift until a few coats have been applied. I keep coating until the colour looks right, sometimes adding some other shade of wood stain if it is too yellow.

I used the old handlebars to hold the grips while I coated them and then realised that I really liked the look of the old bars with cork grips. So, armed with flat and round metal files and coarse sandpaper I set about removing the heavy corrosion, then used steel wool to smooth the surface before applying rust converter. This works on rust, neutralising and blackening it, while slightly brightening non-rusted metal before forming a cloudy effect on it. The converter should be wiped off the non rust areas fairly quickly. When it dried I used steel wool again to polish, then coated the bars with clear epoxy.

Whether I use these original bars or not will now depend on how comfortable they are, and that will depend partly on how high I can raise them with the short quill stem. I can’t glue the grips until I know for sure – cork grips need adhesive to hold the bars without slipping :

I fitted the cloth rim tapes – one new and one reconditioned – as they were the original tape type – and then fitted the 28″ tubes and tyres – here they are with the kick stand after its multiple coatings of shellac :

King Parrots were feeding on the Cootamundra Wattle seeds and chatting as I worked today.  Now, back to the paintwork….

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