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February

February seems like a blur
Mark dropped by with a Colnago TT frame. He had been to the electroplater and a couple of thing had been pointed out that needed attention before plating. A little bit of filler in one of the rear drops, a bit of silver at one of the joins. You don’t often get to see one of these frames let alone be trusted with working on one.

Colnago TT frame

Colnago TT frame

Jeremy’s touring frame continued. A little bit slower than I hoped while I waited on a set of seat stays to match those fantastic Llewelyn drop outs. Planning on having this at the Hand Made Bicycle show in Melbourne. Last weekend in April #hbsa2018 . Better get a wriggle on.

Llewelyn D/Os for touring frame

Llewelyn D/Os for touring frame

Rear stays assembled in the jig

Rear stays assembled in the jig

Bundit came by with another request. A set of Lowpro style forks and bars for his Rosin style street fighter. The bars are still to come. See my Instagram post for more on this build. # g.duke_bikeframes

Low pro style forks

Low pro style forks

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Posted by on February 28, 2018 in Uncategorized

 

Jeremy’s Touring frame

Jeremy wanted a touring frame to suit his particular body. He also wanted a traditional fancy lugged frame with all the extras a touring bike needs. He went off and got measured up and after looking at the options for lugs in my stash he decided on a set of Oscar Egg lugs. I drew up the frame and had a closer look at the lugs. Most lugs are designed around the idea that frames are more or less square, ie that the top and seat tube are pretty close to each other in length. Jeremy wanted a shorter top tube so the lower head lug was going to need some tweaking. I cut a slot in the crotch of the lug and adjusted it. I brazed it up with bronze. My frames are usually silver brazed, using less heat, so this wont effect things when I put the frame together. he also wanted to use an allen key binder bolt so I filled the ears of the lug so it wouldn’t get crushed over time, once again with bronze. These are the things you have to do when dealing with older pressed lugs. It takes a bit longer but is worth it in the end. Once that was taken care of I filed up the tubes for the front triangle and lay things over the drawing. Happy with that I tacked it together in the jig and then proceeded to silver braze things together. The front triangle came out rather nicely with only 0.3mm deflection over 600mm of tube length. The rear triangle is next

Oscar Egg lugs and a fork crown

Oscar Egg lugs and a fork crown

Filling the ears on a seat lug

Filling the ears on a seat lug

Tubes, lugs and a drawing

Tubes, lugs and a drawing

Tweaking a head lug angle

Tweaking a head lug angle

Tweaking a head lug

Tweaking a head lug

Post braze check

Post braze check

 
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Posted by on January 24, 2018 in Uncategorized

 

Period correct forks for Stuart’s Le Mans

Stuart wanted a set of forks to fit his Le Mans frame. As you can see it has the original version of an integrated headset. While that only really effects the length of the steerer it did seem important to create something that was of the era. So, a pair of original Reynolds fork blades and a Haden crown seemed appropriate. Enjoy your Christmas and in the words of one of my favorite TV programs ever. “Lets be careful out there”

Integrated headtube

Integrated headtube

Haden crown and Reynolds blades

Haden crown and Reynolds blades

Genuine Haden

Genuine Haden

Period correct (for the le Mans)

Period correct (for the le Mans)

 
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Posted by on December 11, 2017 in Uncategorized

 

Product testing at the Giro della Donna

Over the dirt at the Giro della Donna

Over the dirt at the Giro della Donna

Like the showers at Roubaix!  After the Giro della Donna

Like the showers at Roubaix! After the Giro della Donna

While we missed the big wet the following week end, it was still pretty damp and dirty but that certainly didn’t detract from a fantastic day. Since I have complete faith in the bike I think the only product under test here was me. Have already signed up for next year so might see you there. https://cyclingtips.com/125km-holden-giro-della-donna/

 
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Posted by on December 11, 2017 in Uncategorized

 

November news

In Late October I spent a week at Lake Eyre in South Australia. It is the largest lake in Australia and the lowest point in Australia at 15 meters below sea level, when it is dry. Its a salt lake and the location of the record breaking land speed record by Donald Campbell in the early 1960’s. Its one desolate place and while I am glad to have had the experience of seeing it I was kinda glad to be back and looking at the tools again.
I finally tied up the details of a touring frame for Jeremy in WA. We have been discussing this for at least 12 months and have at long last got things sorted.

Jeremy's touring frame

Jeremy’s touring frame

You will see more of this in the coming months.
Bundit dropped another project off before I left for Lake Eyre so I got that finished. You might think the dropouts look a little strange sloping down from the chain stay. This is partly because it is a frame modification rather than being built with these dropouts but it does mean they run parallel to the ground and that the gearing remains constant along the length of the D/O slot

Dropouts removed

Dropouts removed

Slotted and lined up

Slotted and lined up

Single speed conversion

Single speed conversion

 
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Posted by on November 14, 2017 in Uncategorized

 

Caitlan’s Rob Bailey

Caitlan’s beautiful chrome Rob Bailey was suffering from a case of seat post slippage. No matter how much she tightened the binder bolt it never really felt tight and the post slipped down under load. Looking at the seatpost lug it was clear that the hole in the ears was a bit too big for the bolt and this resulted in the ears deforming inward. ,while the bolt moved further out toward the back of the lug. The traditional way to fix this problem is to braze a piece into the ears, filling up the larger holes and then drill it out to match the bolt. To do this to the Rob Bailey would have meant destroying the chrome. A costly and more complicated job than was needed. I decided to machine up some stainless steel bushes that could be bonded into the lug. I made them with the appropriate diameter holes for the binder bolt and left a small lip on both of them so the epoxy would be tempted to give way when they were tightened. The flats are clearance on the back of the seat tube. If your interested, I used Devcon plastic steel to bond them together. Unfortunately I forgot to take pictures after I assembled them into the frame, but the seatpost was finally tight when it left the shop

Rob Bailey seat lug

Rob Bailey seat lug

Binder bolt and bushes for Rob Bailey

Binder bolt and bushes for Rob Bailey

Rob Bailey seat lug fix

Rob Bailey seat lug fix

 
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Posted by on October 6, 2017 in Uncategorized

 

gduke at Amys Gran Fondo

What a great day     http://amysgranfondo.org.au/

gduke at Amys Gran Fondo

gduke at Amy’s Gran Fondo

gduke @ Amy's Gran Fondo

gduke @ Amy’s Gran Fondo

 

 
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Posted by on September 20, 2017 in Uncategorized