I recently tested a new butyl inner tube.
This one from Panasonic and called R’air is supposed to Panaracer R’air be as
efficient as latex. Thanks to a new Air flex material, we
would have a tube with the elasticity of latex but Panaracer R’air without the porosity. Coupled with a
light weight of 64g, I had to try this product which aims to be the perfect Panaracer R’air compromise in terms
of performance, resistance to pressure
and heating.
The tests took place as usual
favorite place, the Salbert climb ( see last latex chamber test) . The first session Panaracer R’air took place on 06/09
but was shortened because a light wind
got up on my second climb. For the
second series carried out the day before yesterday, the country email list conditions were more stable and
optimal with 21 degrees, sun and little wind. I have nevertheless grouped in the following table the
results of the 2 days which are not uninteresting.
On 06/09 I started
with a warm-up climb with a 75g Vittoria latex inner tube coupled with
GP4000s. We can see that between the first climb and the second the difference is
1 watt. This is certainly the effect anthony gegwetch senior systems analyst of the slight headwind felt (5 to
10 km/h according to the weather reports). I still made a third climb
with the Panaracer still on GP4000s to note that the latter
seemed more efficient but by barely 1 watt. But with the effect of the wind I preferred
not to conclude anything.
The day before yesterday the wind was very light
(less than 5km/h) and allowed for
better conclusions. Again 3 climbs, the first always in
Vittoria/gp4000s latex then the next 2 in Panaracer. Well I again have the same gap
of one watt in favor of the Panaracer. Thus the latter clean email would allow to offer
a better rolling resistance while being more resistant to pressure
! From a comfort point of view it is also very good, very similar to a latex.