FLAKING PAINT ON NAKED CARBON

Many who searched online for a resolution to this issue are in for not-so-good news – It was a bad idea from the start to clear lacquer any naked carbon. Don’t get confused between shiny moulded race car surfaces. These are not painted. Only a well polished high pressure mold can create this clean finish. When carbon was first used in bike manufacturing they understandably wanted to show the material off. The problem with carbon is the waxy resin surface which forms as an outer skin on the frame which cannot hold clear lacquers for very long. A bit like trying to spray onto nylon..There are a few clear coat primers out there but none very effective as far as we know.

The modern way to show carbon weave is to tint the carbon with a darker primer. This provides better grip and you can just about see the grain coming through. My advice is if you like your blistering frame then the best way would be to go this route but please don’t attempt a fresh clear lacquer respray. You are throwing good money after bad.

EXPRESS SERVICE DOWNTUBE REPAIR & RESTORE

A roof rack incident has left this Wilier damaged in a highly detailed section of the downtube. The client required his bike to be repaired within 1 week if possible so he could attend a race in Europe the following week. We managed to repair, test and restore the graphics to original within a few days.

Guess which one? The other is an original finish.

PACKING YOUR BIKE: DO’S AND DON’TS

Here are a few packing tips to help you with when it comes packing your carbon bike safely for courier delivery:

  1. Always use a dropout protector if you take the rear wheel off. It is a little plastic ‘stick’ that slots into the dropouts to stop the rear stays from being crushed in transit. Same with your forks. If you can’t get hold of one, roll up some cardboard into a tube and tape it in-between the rear dropouts. You’ll sleep better trust me!
  2. Never lean any components against a carbon surface. Wrap the frame in plastic packaging. The rubbing will damage the surface with very little effort. Carbon does not like abrasion. Secure everything in the box!
  3. Take your pedals and skewers off. Tape some cardboard over the hub ends to avoid them piercing the box.
  4. Run your chain over the big ring, adjust the rear mech in as far as it will go and lay some extra cardboard to the bottom of the box.
  5.  Before you close the box fill the rest of the space with ‘filler’ Newspapers, old packing or anything that will stop the components from rattling around inside the box.
  6. No need to wrap the packaged components with loads of tape. It just makes it harder to cut away without damaging the frame…
Look carbon dropout repair

LOOK 586 DROPOUT MODIFICATION

If you ever need an example of the level of competence within CBR here it is. A newly redesigned and injection moulded dropout to replace the original Look design.

Why did we change it? The left picture shows the original carbon dropout which is poor frankly. You can’t, without considerable risk, re-align the hanger without snapping the carbon dropout because there is NO support from the skewer when the wheel is fitted. There is too much reliance on the strength of this carbon section when, in fact, it needs to be less exposed.

This repair was for a Swiss client who loves the bike but after trying to repair it we gave up and suggested that we re-design the dropout to a different hanger system which he can replace as per normal if the hanger is damaged.

I don’t criticize the rest of the bike or the company but in our opinion this design, like some other manufacturers, have fallen short in this department. I would like to hear from Look as to why this is so. It is possible we have missed something obvious. I would be happy to share that update with you all in due course.

 

INSPECTIONS AT CARBONBIKEREPAIR: INITIAL INSPECTION

Pre and post repair inspections are key to ensuring that we have control over the quality of the weld and the warranty of our repairs.

All bikes that come into CBR are subject to an initial pre-repair inspection before we provide a final quote. There are many cases where additional fractures go undetected.

This basic inspection consists of a visual inspection in a controlled environment. This initial fee is waived if the repair is undertaken.

INSPECTIONS AT CARBONBIKEREPAIR: FULL SCAN – MICROSCOPE

Pre repair and post repair inspections are key to ensuring that we have control over the quality and the warranty of our repairs.

If you have specifically requested a ‘Full scan’ (Full Health Check) part of the scan process is still manual. The microscope is used to identify micro fractures which confirm what we are seeing on the Thermographic scan. It is best never to only rely on one source however amazing it is. Peoples lives are at risk.

INSPECTIONS AT CARBONBIKEREPAIR: FULL SCAN – THERMOGRAPHIC X-RAY

Pre repair and post repair inspections are key to ensuring that we have control over the quality and the warranty of our repairs.

Thermography is the ultimate in flaw detection. It has taken 4 years to identify a process which provides primary flaw detection using infra-red energy and 4k thermo imaging to read energy dissipation over a surface therefore providing an in-depth view of the state of the carbon. It is a myth that traditional x-ray can find all fractures when in fact what it is good for is manufacture compliance for wall thickness and anomalies such as air pockets which it reads best through cross section.This is not good enough. HD Thermography is not constrained by any shape, thickness variation or angle.

This system was developed for specific carbon inspection requirements. Not only is this effective for flaw detection at the pre-repair stage but also for post-repair inspections. We are confident at this stage of the inspection evolution that we using the best carbon flaw detection technology available to ensure conclusive results.

There are many occasions where frames are needlessly written-off.  We hope you feel more confident in asking us to check over your bike before you take someone’s word for it.

COLNAGO EPS HEAD TUBE FRACTURE AND PAINT RESTORATION

It must be Colnago week for complex repairs. This frame suffered a massive head-on collision but after a full thermo scan we were able to confirm that only the head tube lugs and tube ends were damaged making it an economical repair. Lug bonded joints are always slighly more tricky to repair as you have 2 sets of repairs as opposed to only the tube intersections of a monocoque. We replaced and repaired the lugs in the traditional manner, rebonded and stress tested the frame slightly beyond the required pressures. Only once passed QC’d was it paint restored with particle specific Colnago metallic blue and flat white colours to finish the frame to perfection.

Yet another would-be-trashed bike with a safe new lease of life.

C60 COLNAGO 100% REPAIR AND RESTORE

Written off, 2 major fractures, sheered seat post at the front mech moulding and chain stay snapped in half. Can it really come back to life and retain its original value??

It sure can. Nothing can replace qualified carbon technicians and sprayers. The repairs and paint restoration are indetectable using thermographic imaging and ultrasound. No wonder Colnago want CarbonBikeRepair to do all their restoration work in the UK.

ORBEA ORCA COMPEX REPAIR AND RESTORE

We had to make sure that when we promise we can restore this that we do it back to factory finish. Chain stay fracture and factory finish restore