Kirk Frameworks

[NHAero]

Terrific story, thanks for sharing!

[NHAero]

Back to our regularly scheduled programming

Reading back through this long thread, so full of bike wisdom and experience, I saw that the JKS Special is typically built with 953 top and down tubes (do I have that right?) If one of those frames is fillet-joined, and because there are non-stainless tubes as well it will be painted, can you then use the more builder-friendly brass to do the fillets? Is the silver required only when left unpainted?

Thank you as always

[David Kirk]

Originally Posted by NHAero

Back to our regularly scheduled programming

Reading back through this long thread, so full of bike wisdom and experience, I saw that the JKS Special is typically built with 953 top and down tubes (do I have that right?) If one of those frames is fillet-joined, and because there are non-stainless tubes as well it will be painted, can you then use the more builder-friendly brass to do the fillets? Is the silver required only when left unpainted?

Thank you as always

Hey - thank you for the question.

With steel tubes one can lug or fillet braze them with either brass or silver....either can make a lifetime joint. With stainless, one can only braze with silver as the brass will not bond properly to the tube. So even if it's a stainless tube being brazed to a steel tube it needs to be silver. If it's stainless and brazed the filler material is always silver.

Make sense?

dave

[NHAero]

Originally Posted by David Kirk

Hey - thank you for the question.

With steel tubes one can lug or fillet braze them with either brass or silver....either can make a lifetime joint. With stainless, one can only braze with silver as the brass will not bond properly to the tube. So even if it's a stainless tube being brazed to a steel tube it needs to be silver. If it's stainless and brazed the filler material is always silver.

Make sense?

dave

So, are the filleted JKS frames with a mix of stainless and not-stainless tubes all done with silver?

[David Kirk]

Originally Posted by NHAero

So, are the filleted JKS frames with a mix of stainless and not-stainless tubes all done with silver?

The JK Special is a lugged frame built with a mix of stainless and steel and it is silver brazed. There is no fillet JK Special.

My fillet frames come in two versions....all steel, brass fillets and fully painted...or the Onesto version which is all stainless with silver fillets and no paint needed.

I don't offer any mixed material fillet frames. I hope that makes it clearer and no more muddy!


dave

[NHAero]

Originally Posted by David Kirk

The JK Special is a lugged frame built with a mix of stainless and steel and it is silver brazed. There is no fillet JK Special.

My fillet frames come in two versions....all steel, brass fillets and fully painted...or the Onesto version which is all stainless with silver fillets and no paint needed.

I don't offer any mixed material fillet frames. I hope that makes it clearer and no more muddy!


dave

Thanks very much. I'm enrolled in the remedial comprehension class and hope to make progress

[David Kirk]

This week's build is an Onesto Fillet - meaning stainless tubes and silver lugs and zero paint or clear coat. I brazed the front triangle together today and got 1/2 of the finish work done.

Back at it on Monday!

dave

[AR2266]

Originally Posted by David Kirk

These two experiences left deep impressions on me. The old white guy who seemed so scared that he was ready to kill me to defend himself and the black woman, who had more then enough reasons to hate a young white man, opening her arms for me. I wish I could make sense of this but even after nearly 40 years it’s as much a mystery as it was then. I hope life treated these two Niceville residents well.

Lovely story Dave.
We could read more.

I'm not sure, despite the 40 years since, if things have changed for the better.

[David Kirk]

Originally Posted by AR2266

Lovely story Dave.
We could read more.

I'm not sure, despite the 40 years since, if things have changed for the better.

I suspect that the old "colored" sign on the backside of the old gas station is long gone and that's good...I also suspect that very little else has changed for the better.

dave

[GParkes]

Originally Posted by pdonk

Tears of joy I hope, not tears that you missed out on this opportunity.

No, I sold the bike to Adam.................

[Hilltopperny]

Originally Posted by GParkes

No, I sold the bike to Adam.................

Thanks Gerry! I had it out yesterday morning for a ride through the Mohawk Valley and back up to my place yesterday. A great bicycle for sure!

Sent from my SM-S127DL using Tapatalk

[David Kirk]

A Onesto Fillet ready to have its kit installed next week.

Happy 4th all!


dave

[Greyfox]

Hi Dave,

I was wondering what the difference would be in weight between a lugged frame, one in 953 stainless and the other in your regular steel, say a 56cm.

Thanks. Love the work.

Greyfox

[David Kirk]

Originally Posted by Greyfox

Hi Dave,

I was wondering what the difference would be in weight between a lugged frame, one in 953 stainless and the other in your regular steel, say a 56cm.

Thanks. Love the work.

Greyfox

Good morning -

Thanks for the question. Honestly it's very hard to give you an accurate answer on this. The two materials used the make the tubes weigh the same so if the tubes were the same diameter and wall thickness they would weigh the same. But...since the Reynolds 953 stainless material is so very strong it can be made thinner than most steels and this results in a tube that is lighter than steel.

The steel I most often use is Reynolds 853 Pro and it is nearly as strong as 953 so the walls are nearly as thin and this means it's nearly as light. Lots of "nearly's" in there. So in the end my 953 stainless framesets are slightly lighter than those that I make from 853 Pro.

How much different? A rough guess is a few ounces...1/4 pound at the very most depending on the frame size. I suppose that this could be a little or a lot depending on your perspective on these things. From where I sit the difference is slight.

I hope that adds up.

dave

[NHAero]

Would you be able to tell us the weight of the frame/fork in the photos, as a baseline, and whether it was made of the lightest of the choices you have, or was made for a heavier rider?