"Shot in backstays"

[wafter]

I've come across this term a little when looking at frames but can't find a definition - could someone please enlighten me? Ta

 

[Poacher]

Try searching for "shot in seat stays".

 

[Cycleops]

I’d be interested too. Maybe someone who’s familiar with welding techniques could explain why they are so difficult to do.

 

[raleighnut]

A lot of work compared to just welding em on the side.

 

[wafter]

Try searching for "shot in seat stays".

Thanks - found this thread on Retrobike which appears to explain it.

In essence (and please correct me if I'm wrong) it appears that "shot in" stays essentially intersect / are attached to the seat tube end-on, rather than the more traditional method of attaching them to the sides of the seat tube and cutting them at an angle to give a smoother aesthetic.

Not sure what the advantage is of shot-in stays other than aesthetic; seems like a weaker way to to attach the two parts tbh due to the reduced contact area for brazing. I guess pretty much all modern tig-welded steel frames are "shot in" by this definition.

 

[fossyant]

fastback was another word.

 

[Ian H]

Shot-in stays appear to go straight into the seat-tube. A bit of showing-off by the frame builder. An alternative bit of fanciness is the wrap-around arrangement.

 

[midlife]

There was shot in, fastback and italianate. All variations of the same theme.

 

[Cambram]

Have a look at Fake Colnago posted by Cambram in this section. Second or third page shows pictures at various stages of "restoring" my frame with what I understand are "Shot In" seat stays. It requires a steady hand and the right diameter file to get the angle correct. They look neat when finished and reduces the width over the stays at the top perhaps with the intent of reducing drag. A couple of inches off my waistline would be even better.

 

[midlife]

About 3 pages down, pictures of all 3 types

http://www.hetchins.org/403.htm

 

[wafter]

Thanks guys - great info and I think between you all bases are comprehensively covered

 

[BalkanExpress]

Shot in stays have a bit of a reputation for cracking under extreme stress. For example, SBDU did not recommend them for bikes that were going to be raced. I don’t have any evidence that this is a real world, normal usage problem.

 

[midlife]

Carlton had their own version called the "Victor" seat stay cluster, but dropped it because of problems with failure. Strange setup with the seat stays tapering down to almost a point where they went into the seat lug. Early Giro D'Italia frames had them. I'll have a Google.

 

[midlife]

https://www.cyclechat.net/threads/carlton-criterium.245111/

 

[fossyant]

Shot in stays have a bit of a reputation for cracking under extreme stress. For example, SBDU did not recommend them for bikes that were going to be raced. I don’t have any evidence that this is a real world, normal usage problem.

30 years and counting on my handbuilt SLX with fastback. Looks miles better than on the sides