Kirk Frameworks

[David Kirk]

Originally Posted by sokyroadie

Gorgeous, but TINY frame - what is the TT & HT?

The effective top tube is 55.0 and the head tube is 100 mm....but take that HT with a large grain of salt because the fork is long and the BB drop is large (due to the larger OD of the tire to be used) and this makes for a shorter head tube.

dave

[David Kirk]

The bike shown in the past few posts is done, boxed and gone - headed to Malaysia.

Unfortunately the seat post was shipped to the wrong address and despite grand efforts it seems stuck wherever it's at. The owner has a post that he will use so the bike is shown without the post and saddle.

The Onesto Fillet MRB frameset is built up with HED wheels, Shimano Dura Ace Di2, Velo Orange rim brakes and Rene Herse tires. I didn't weigh it before it dropped into the box but it felt pretty darn light. I think it's going to make for a fun ride.

The next bike in line is similar but will be smaller and be built with steel instead of stainless so it will get some of JB's awesome paint. More on that ASAP.

dave

[madsciencenow]

Really like this build! Curious about the di2 wire upfront? I was thinking 12-speed didn’t require this or is that only for hydro brakes?


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[David Kirk]

Originally Posted by madsciencenow

Really like this build! Curious about the di2 wire upfront? I was thinking 12-speed didn’t require this or is that only for hydro brakes?


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Yeah....interesting isn't it?

The new Di2 is semi-wireless if it's a hydro disc brake group (wires go from each derailleur to the seat post battery). If it's a rim brake group there is no longer the junction box that was typically secured to the stem and it's replaced by a small connector. But there are still wires that run from the shifters that come together and then turn into one wire that goes into the down tube and to the rest of the system.

So Di2 with rim brakes is not wireless whatsoever. Di2 with disc brakes is semi-wireless. If you want true wireless then eTap is still the only choice.

dave

[truth]

Hi Dave,

This is another gorgeous bike! When you make your lovely stainless bicycles is the fork steerer also stainless?

[wyatt_]

Love these bikes. Unfortunately a custom stainless frame like this will likely never be in my price range but I am trying to see what I can do to emulate with my own fat tire rim brake road bike. I’ve noticed you almost always spec with the Velo Orange Grand Cru brakes. Curious to know if you’ve tried the Tektro r559 brakes and if you notice a difference in performance between the two?

[David Kirk]

Originally Posted by truth

Hi Dave,

This is another gorgeous bike! When you make your lovely stainless bicycles is the fork steerer also stainless?

Yes....the steerer is stainless.

The first few stainless bikes I built many years ago had a steel steerers because stainless wasn't available. But for a long time now all the steerers are stainless.

dave

[David Kirk]

Originally Posted by wyatt_

Love these bikes. Unfortunately a custom stainless frame like this will likely never be in my price range but I am trying to see what I can do to emulate with my own fat tire rim brake road bike. I’ve noticed you almost always spec with the Velo Orange Grand Cru brakes. Curious to know if you’ve tried the Tektro r559 brakes and if you notice a difference in performance between the two?

I have not used the Tektro on the road but I have a set that I used to measure for tire clearance. I bought nearly every mid reach brake on the market and measured them all. I mounted them and set them up with a cable and felt the firmness at the lever but it was middle of winter so I couldn't ride them.

The Velo Orange have the firmest feel and I've used them extensively now and they are my go to....but others may work well also but i can't speak to that first hand.

dave

[NHAero]

Originally Posted by wyatt_

Love these bikes. Unfortunately a custom stainless frame like this will likely never be in my price range but I am trying to see what I can do to emulate with my own fat tire rim brake road bike. I’ve noticed you almost always spec with the Velo Orange Grand Cru brakes. Curious to know if you’ve tried the Tektro r559 brakes and if you notice a difference in performance between the two?

I have the R559 calipers on my Bob Jackson, as it was originally built for 27” wheels plus 32mm tires and fenders. Note that it is rated 55-73mm reach, and the VO brakes I believe are 47-57mm reach. So the 559 caliper is less stiff and I wouldn’t design a frame around that brake. I put a Paul Racer original long reach brake on the front and it improved braking over the 559, even though the 559 had Koolstop pads. I have kept the 559 on the rear, where I don't need the braking power.

[wyatt_]

This is great feedback y’all. Thanks.

[madsciencenow]

Originally Posted by David Kirk

Yeah....interesting isn't it?

The new Di2 is semi-wireless if it's a hydro disc brake group (wires go from each derailleur to the seat post battery). If it's a rim brake group there is no longer the junction box that was typically secured to the stem and it's replaced by a small connector. But there are still wires that run from the shifters that come together and then turn into one wire that goes into the down tube and to the rest of the system.

So Di2 with rim brakes is not wireless whatsoever. Di2 with disc brakes is semi-wireless. If you want true wireless then eTap is still the only choice.

dave

Thanks! Seems like a half-assed attempt by Shim to support rim brake users. I get it and it’s not that big of deal but it feels like a middle finger to rim brake bikes.


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[rice rocket]

Originally Posted by madsciencenow

Thanks! Seems like a half-assed attempt by Shim to support rim brake users. I get it and it’s not that big of deal but it feels like a middle finger to rim brake bikes.


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I thought the same initially, but having built up a rim brake bike w/ 8100, I sorta get it now.

Rim brakes don't allow for tight bends and routing that would allow for hidden cables, so you would be pairing the wire with rear brake housing to bridge to the frame anyways.

[David Kirk]

Some fillets for Friday -

dave

[DeBike]

Originally Posted by wyatt_

Love these bikes. Unfortunately a custom stainless frame like this will likely never be in my price range but I am trying to see what I can do to emulate with my own fat tire rim brake road bike. I’ve noticed you almost always spec with the Velo Orange Grand Cru brakes. Curious to know if you’ve tried the Tektro r559 brakes and if you notice a difference in performance between the two?

I have the 559 brakes on my Lemond Poprad. I am not a big fan of cantilever and the original Shorty 4's were worn out. The brake track on the rims are machined and the 559s stop the bike very well with stock pads. I have KoolStops to put on them, but will wait until the stock pads are worn before switching. I have no experience with any other long reach calipers.

[572cv]

Originally Posted by David Kirk

Some fillets for Friday -

dave

We have Tool Tuesday, and now Fillet Friday! I pretty much love all the threads on works in progress.