Thorn 969 tubing!
Thorn 969 tubing is made of the same raw material as Reynolds 725, it undergoes the same processes inc heat treatment. How a frame works is not only about which steel is used, but in what diameter, thickness and shape, and more importantly, the geometry of the frame.
We don't quote weights for several reasons:
weights vary from size to size, even between sizes as there is some tolerance in manufacture resulting in difference. If you were to actually WEIGH some of the bikes/frames from other builders, who DO quote weights, you'd find them wildly different! So this is just one reason why we prefer to say, if you don't want our bike, up to 14 days after you've received it, you can return it for a 100% refund, if you're on the UK mainland we'll even collect it again (providing you kept the box) @ OUR expense.
I'm sorry that we can't weigh every frame from each range in every size and post the APPROXIMATE weights, but none of our models are race bikes, a few 100g is irrelevant relative to the other items including the rider @ say 75000g and luggage @ say 25000g
To get this in context our heaviest frame (EXP) in the smallest size would probably weigh near enough the same as our lightest frame (Cyclosportif) in the largest size.
I hope this helps, if you (or anyone else for that matter) would like to discuss this or any other issue, feel free to call me on (++44)(0)1278-441522