Raleigh Dyna-Tech Pro

[Guinessisgoodforyou]

I vote keep too.

 

[3wheeler7]

From what I’ve read 2080 is Reynolds 753?

Don't know where you read that but it's incorrect :-

2080 is 85tons tensile tubing (source DynaTech catalogue), 753 is 75tons tensile prior to brazing and 65tons tensile after (source Reynolds tubes own data sheet).

 

[Mod-Master]

The Mavic headsets do look lovely and no doubt perform well. It is an instinct of mine to take of one valuable part off the bike and sell it to pay for the rest of it. But if it’s a quality item then you should keep it

 

[Gtpulse]

Don't know where you read that but it's incorrect :-

2080 is 85tons tensile tubing (source DynaTech catalogue), 753 is 75tons tensile prior to brazing and 65tons tensile after (source Reynolds tubes own data sheet).

I’ve maybe quoted what I read incorrectly, wisdom of the internet not always factual!

https://www.hilarystone.com/frameset5.html

https://www.retrobike.co.uk/threads/raleigh-dyna-tech-pro.55968/

 

[Gtpulse]

The Mavic headsets do look lovely and no doubt perform well. It is an instinct of mine to take of one valuable part off the bike and sell it to pay for the rest of it. But if it’s a quality item then you should keep it

Completely agree, though this one is paid for with funds from this approach on previous stuff so I’ve got a bit of slack with it!

 

[3wheeler7]

I’ve maybe quoted what I read incorrectly, wisdom of the internet not always factual!

That's why I cited my sources!
Incidentally I was talking to a chap who used to assemble the bonded Dynatech frames and - according to him - Raleigh had to abandon them due to Health & Safety issues with the adhesives used.
Anyone else heard that? Perhaps it explains why the Dynatech name lived on but the bonded lugs didn't.

 

[Guinessisgoodforyou]

That's why I cited my sources!
Incidentally I was talking to a chap who used to assemble the bonded Dynatech frames and - according to him - Raleigh had to abandon them due to Health & Safety issues with the adhesives used.
Anyone else heard that? Perhaps it explains why the Dynatech name lived on but the bonded lugs didn't.

I would like to know more thats interesting.

 

[3wheeler7]

Possibly something to do with some epoxy adhesives containing asbestos? I used to work in the aircraft industry using Ceba Geigy Redux, in the 1980s it was superseded by a non-asbestos version. Just guessing. I'll try and find out more if I see the guy again.

 

[peetee]

I believe there was no direct equivalent conventionally numbered (3figure) Reynolds tubeset for any of the bonded tubesets. The higher spec tubes on conventional frames are thinner gauges so the hole through them is larger but on the bonded frames lugs were internally sleeved into the tubes and common to all the frames so the internal dimensions of any tube in a specific position had to be common regardless of the ‘poshness’ of the tubeset. Take that little problem and add in the fact that brazing or soldering a frame affects the finished strength of the tube there was not much point trying to manufacture sets that exactly matched Reynolds conventional tubes.

 

[ferrus]

Don't know where you read that but it's incorrect :-

2080 is 85tons tensile tubing (source DynaTech catalogue), 753 is 75tons tensile prior to brazing and 65tons tensile after (source Reynolds tubes own data sheet).

Raleigh have been quite inconsistent and confusing about this. Personally, I don’t think they’re exacty comparable as the Reynolds tube sets (531, 753 etc) refer to distinct specifications; wall thickness, butting etc, and not just the metallurgy.
However they did mention it here, in this German catalogue where the 2080 Pro frame is described as (~ Reynolds 753) :
https://www.retrobike.co.uk/gallery...9&g2_serialNumber=3&g2_fileName=Raleigh91.pdf