BOBCFL: 1970 Mercian Custom Superlight

It's been a while but what a way to start back up.  Really digging this bike! Normally cottered cranks turn me off but they seem absolutely perfect on this bike.  Plus the 3 speed corncob in back...

It's amazing how despite it's age and components you can still tell this bike was built for speed.

Timeless.

My Bikes: 1983 685mm Specialized Expedition

It occurs to me I haven't shown what I'm working with so I'll copy and paste part of an email I had sent to the MiyataSpecTour group after finishing this build.


Well todays the big day!  All the boxes have been checked, parts installed, and components have been dialed!  After a 2 years of looking for a frame my size, 1.5 years of finding the parts, and over 50 hours of polishing (since i was doing it on a budget most of my parts came pretty pitted and oxidized)/installing/tuning/modifying my build is officially complete!

Before I drop the link for pictures here's a run down of the bike:

• 1983 Specialized Expedition 68cm (thanks cliff!)
• Mavic A719 36 hole rims, Sapim(?) spokes (rear tied and soldered), Shimano XT M760 hubs (thanks paul)
• 2010 700x32c Gumwall Panaracer Pasela TG 
• 2008 SRAM 990 Cassette 11-34t
• ~1985 Shimano XT 50-45-28t 170mm Crankset (FC-6206)
• 2010 128x68mm Shimano UN-54 bottom bracket
• 2010 Dura-Ace 10 speed bar end shifters
• Campagnolo (not sure of the model) Brake Levers
• 1981 46cm Nitto Randoneer handlebars
• 1987 ~100mm Nitto Technomic Stem
• Dura-Ace Headset (not sure of the year)
• ~1992 Dura-Ace AX 26.6mm seatpost shimmed to 26.8 (thank you Pabst!)
• Shimano XT canti's upfront, new Tektro CR720's in the rear (actually a really decent brakeset with good looks)
• 2008 Green B17 w/ Hammered Copper Rivets
• New Dura-Ace cabling throughout
• 2009 Nitto Nice Rack (front)
• 2010 Axiom Streamliner DLX Rack (rear)
• 1979 and 1981 Kirtland TourPak panniers (I have a matching handlebar pack and mount but not sure if I'm going to use it just yet)
• MKS Pedals w/ NOS Cages, Christophe leather straps

'

Yep, I love my bike

And yep, I'm 6'6" w/ long legs.

Tutorial: Installing Alloy Fenders with Weather/Noise Proofing

When installing the fenders on my bike I decided to use some weather stripping to seal up the fork from the elements as well as using the stripping for vibration dampening.  I've since ridden a couple hundred miles on the bike and everything is holding great.  I was nervous this would not be a durable solution but it has proved to be quite effective.

I used aluminum fenders and don't see the point of risking breaking plastic fenders to do this.  The fenders are some generics I bought at a DC swap meet for $10 including hardware.  All and all, counting the sheers, the total came to just under $25.

You'll need

• Weather Stripping

• Metal Sheers

• Aluminum Fenders
• Permanent Marker
• Optional: Pliers or small hammer

Step 1:

Posses a frame that has at least 30mm of clearance between the fork blades, and chain/seat stays as well.  My fork had ~35mm of clearance for reference.

Step 2:

Gently place your new front fender between for the for blades and mark each side on the fender with a permanent marker so you know how wide your cuts have to be. Then use your eyes to estimate how deep into the fender you will have to cut out to fit the bike.

Step 3:

Once both sides are marked make your cuts.  Remember to always cut short of your marks the first time in case your markings are too big. The whole key here is too make a good even flap.  You will not cut out all that you marked. It's a real good idea to file these cuts down.  Here's what my final markings and first flap looked like:

Step 4:

Cut 2 pieces of the weather seal that are each long enough to wrap around the fender.  Looking back on it now it is completely feasible to use one long piece but no biggy.  Now place an end of each piece of sealer under one of the flaps you cut INSIDE the fender.  Fold the flap down on top of both of them, I ended up tapping it down with a trim hammer to secure it.

Step 5:

Now wrap each piece of sealer over the outside of the fender and underneath the opposing flap.  Be sure to cover the corners as to not scratch the bike.  Pictures do a much better jorb of explaining. 

Step 6:

Mount your newly improved fender!  I also went ahead and put a strip between the fender and it's frame to cut down on noise.  Also it's a good idea to do this to where ever the fender mounts to the frame so I put some between the rear fender and it's frame mounts.

 

Safe travels!