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New ride!(9 posts)

New ride!Ye Olde Balde One
Jul 10, 2003 12:14 PM
Deda EM2 frame lovingly built by Corrado Spada.

Frame is ceramic blasted (like 3t Prima 199 bars), then decals applied and gloss clear coated to finish.

I'll build it with a mix of Record and some lighter parts (Spada seatpost - 135gm and wheels - 1380gm), then Climb to Kaiser, here I come!
... that's badda...Akirasho
Jul 10, 2003 12:30 PM
... make sure you post pics of the finished project!

Be the bike.
My new ride...13.882lbs!Ye Olde Balde One
Jul 23, 2003 9:42 PM
Well, I built it!!!!

Some parts are going to change, ie: CAT-USA brake calipers (Record DP's right now with Al pad T-nuts) and FRM cranks (I use 177.5mm - Campy Records are 656gm with 53 x 39t rings...) with an FRM ISIS Al BB, although the Ti one I have in there is 138gm. Then with some sub200gm bars and a lighter saddle (Selle Italia Evo3 130gm is what is on there for now), maybe I can hit 13.5lbs total weight.

Pic's to follow.
I used to use the Prima 199 barsB2
Jul 10, 2003 1:11 PM
but I didn't know they were "ceramic blasted".

Is this a very common procedure? Is the idea to place a thin ceramic coating over the metal to add strength?

Bryan
YesDustBowl
Jul 11, 2003 4:35 AM
It is relatively common. Unually it is done with steel beads though. By blasting the surface a small amount of deformation is done to the metal on the surface of the part. This results in the surface metal being left in compression and improves the strength of the metal. It is especially useful to prevent cracking because it helps to close existing cracks (we are talking about tiny cracks, not ones large enough to see with your eye). A similar procedure is done to windsheild glass (although performed by quick cooling and not bead blasting) to prevent crack growth. Independent Fabrications bead blasts their Ti bikes and may have more info for you on their website.
I used to use the Prima 199 barsYe Olde Balde One
Jul 11, 2003 6:12 AM
The caramic bead blast is less aggressive than sand blasting. It irons out imperfections small enough that they can't be seen with the eye, but that could propogate into cracks and causes microscopic surface hardening. Ambrosio are starting to use this on their rims after drilling for the same reasons. This apparently increases frame life by 30-40%.

Deda, 3t and Modolo use this process on their lightweight bars and some other components for the same reasons as well (Deda call it KET), using it on tubes before they are assembled into a frame has some of the benefits (SC61.10A), but handling and working on the tubes takes the benefit away in the most highly stressed areas, the junctions of the tubes.

This is all according to Corrado Spada, who is a third generation frame builder, wheel builder, and component producer.

We decided on the high gloss clear coat to show off the weld quality, Corrado is very proud of his welding skills.
re: New ride!CritLover
Jul 10, 2003 8:03 PM
Where is Spada made? I'm not familiar with them. Nice looking frame by the way.
Here's another pictureYe Olde Balde One
Jul 11, 2003 6:15 AM
re: New ride!aliensporebomb
Jul 11, 2003 11:26 AM
Wow. Understated and gorgeous. I love it.

And those welds - they look like they were done by a
freaking machine they're so uniform. Very impressive.