True Temper tubing (AVR vs OXII Comp)
sean garrick
Can anyone tell me what the differences between True Temper's AVR and OXII Comp tubesets are. Any info on heat treatments or butting.
Thanks
Sean
gar...@eng.buffalo.edu
Joseph Broach
gar...@acsu.buffalo.edu (sean garrick) writes:
>
>
>Can anyone tell me what the differences between True Temper's AVR and OXII Comp tubesets are. Any info on heat treatments or butting.
an AVR frame that is fully double butted, but I have seen an AVR frame with
just the seat tube butted. OX-II is obviously the higher end of the two and
I would guess is stronger and lighter than AVR.
-J.B.
>
>Thanks
>Sean
>gar...@eng.buffalo.edu
>
Michael Pieczarka
: Can anyone tell me what the differences between True Temper's AVR and OXII Comp tubesets are. Any info on heat treatments or butting.
Looking in the True Temper catalogue for '93 and the '94 cat. the major
difference between the AVR and OX series tubes ( OX3, OXRCX, and
OXULTRA2, no listing for OXII Comp ) is that the OX tubes are heat
treated and the AVR tubes are not. Comparative top tube butts are:
AVR .9 .6 .9
OX3 .7 .5 .7
OXRCX .7 .5 .7
OXULTRA2 .76 .56 .76
Michael V. Pieczarka
Rocky Mountain Race Support
--
MARK LU
In a previous article, rmra...@rainbow.sosi.com (Michael Pieczarka) says:
>sean garrick (gar...@acsu.buffalo.edu) wrote:
>
>: Can anyone tell me what the differences between True Temper's AVR and OXII Comp tubesets are. Any info on heat treatments or butting.
>
>Looking in the True Temper catalogue for '93 and the '94 cat. the major
>difference between the AVR and OX series tubes ( OX3, OXRCX, and
>OXULTRA2, no listing for OXII Comp ) is that the OX tubes are heat
>treated and the AVR tubes are not. Comparative top tube butts are:
> AVR .9 .6 .9
> OX3 .7 .5 .7
> OXRCX .7 .5 .7
> OXULTRA2 .76 .56 .76
Does heat-treating a tube make it lighter or are the higher end
OX tubes lighter because of the tube wall thickness and butting?
What are the 3 numbers beside each of the tube names? Are they
wall thicknesses and what measurement unit?
rich...@cruzio.com
> sean garrick (gar...@acsu.buffalo.edu) wrote:
>
>
> Looking in the True Temper catalogue for '93 and the '94 cat. the major
> difference between the AVR and OX series tubes ( OX3, OXRCX, and
> OXULTRA2, no listing for OXII Comp ) is that the OX tubes are heat
> treated and the AVR tubes are not. Comparative top tube butts are:
> AVR .9 .6 .9
> OX3 .7 .5 .7
> OXRCX .7 .5 .7
> OXULTRA2 .76 .56 .76
>
differences in the RT tubes? (I know - spoken like a pain in the arse
picky steel builder - I apologize).
Cheers,
KB
Harry Phinney
: > AVR .9 .6 .9
: > OX3 .7 .5 .7
: > OXRCX .7 .5 .7
: > OXULTRA2 .76 .56 .76
: Does heat-treating a tube make it lighter or are the higher end
: OX tubes lighter because of the tube wall thickness and butting?
Heat treating a steel in no way changes either the density or the
stiffness of the metal. The heat treated tubes are lighter only because
they have thinner walls. Because they are thinner they will (given the
same diameters) be more flexible. The heat treatment can allow the use
of thinner walls while maintaining a reasonable level of strength and
durability.
: What are the 3 numbers beside each of the tube names? Are they
: wall thicknesses and what measurement unit?
The numbers are apparently the wall thicknesses of the butted sections
in millimeters - e.g. the AVR is .9 mm thick at the ends, and .6 mm
thick in the middle, which happens to be the same as Columbus SL tubing.
Note that the wall thicknesses don't necessarily tell the whole story,
since different manufacturers might supply the tubes with butted
sections of different lengths. Does True Temper really hold
their walls (or claim to) to +-.01 mm?
Harry Phinney ha...@cv.hp.com