Mountain bike paint

MOUNTAIN BIKE PAINT

How have the manufacturers responded to the elements that can affect paint on a typical carbon mountain bike?

You have 2 options it seems:
1 – Powder coat the frame if it is alloy. The limitations are in the colour choice and the designs limitations but it is as hard as nails.
2 – The other option is to apply many more layers of paint and lacquer to absorb the shock of chips. Usually a typical road bike will receive about 2-3 layers of lacquer. In this example, this Trek MTB has about 8 layers which is clearly an indication that they want to protect the exposed surfaces from abrasion and chip damage as much as possible. There are other brands which apply std 2 pak bike spray in this many layers. Others opt for weight saving but it depends on what the bikes primary use will be.

That said there is no particular right or wrong way to paint a MTB other than the point that std bike paint can take a hammering on loose terrain compared with road bikes and therefore the manufacturers apply different solutions to MTB spray jobs.
The best overall solution, if you want to keep your bike is good aesthetic condition, is to apply Invisiframe which is a thin clear adhesive tape cut to your bikes profile. Works a treat.

CAN A CARBON REPAIR BE TOO STRONG?

Yes. This mountain bike came in for an inspection requested by a concerned customer after it was repaired by another carbon repairer. The large ‘block’ of carbon (pic left) now present on the BB/ downtube is much thicker then the original tube wall. As a result if this area were knocked during riding it will simply shere the surrounding original carbon punching a hole into the frame.

It is so important to know what you are doing when repairing composite bicycles. This is one example we see on occasion but it answers a more important, common question – ‘Can you make the repair stronger then the original section?’ The answer is usually no. We repair (pic right) to the specification of the frame for very good reason!

WE STAND BY OUR WARRANTY

This customer had a custom respray last year. Over time it developed paint flaws which were consistant with an error in the paint process. We inspected under microscope and discovered shrinking and adhesion issue which was not down to user error:

‘Hi Ben
Frame received back thanks for standing over your work.
Thanks
Alan’

BIKE SHOP SUPPORT

We make sure, as with all our bike shops, Sigma Sport are always satisfied with our service:

‘Hi guys,

The frame arrived today and, as usual, the finish is excellent. Just wanted to say a massive thank you for getting this turned around so quickly.

It is very much appreciated.’

THE DEVIL IN THE DETAIL

Some people ask about the level of detail we put back into our restoration and custom resprays here at CBR. In this case we are spraying an F8 Pinarello in a special candy blue effect. The top tube detail is replaced using an in-house template which allows us to spray in fine detail such as this. The next phase of the respray is to apply the gloss finish and polish so there are no edges to the surface. Ahhh the detail..

TREK PROJECT ONE RESTORE – PART 2

This is a fairly complex and unique restoration of a top tube where the design consists of random letters. Here is the finished restore 100% as per the original.

BSI STANDARDS FOR CARBON BIKE REPAIR

The BSI Assurance Mark is for organisations whose management systems have met or exceeded the requirements of the BSI standard or scheme. CBR is committed to the highest safety standards, customer service and workmanship. Merry Xmas and hopefully we don’t see you in 2018!

CBR UK team

COLOUR MATCHING

Some of you may know the brand and model based on the component. I want to show how complex colour can get when it is a moving target.  There is a perception that the original, on the left,  is the benchmark when in fact what it shows is an uneven colour spread which we have had to emulate. The first one we sprayed was rejected for not matching the frame in situ when in fact the original was part of a total respray where the colour shifts across the surfaces (possibly for effect I don’t know). We appreciate the challenge. It teaches us to look even more closely in order to finish the bike the way it was sprayed.

WE RIDE WHAT WE FIX!

Pictures speak louder then words. This project was part of CBR ZA’s training course in the UK. It completed the 94.7 race in Johannesburg. We ride what we fix! Congratulations Team CBR ZA

TREK PROJECT ONE RESTORE – PART 1

This is a fairly complex and unique restoration of a top tube where the design consists of random letters. The lighter part of the image shows the replacement stencil showing a facsimile of the pattern. The darker part is the top tube where the restore will take place.