Off road: Riding at lower pressure means better performance ... but at the same time it increases the risk of failures. The limit so far is at about 20 psi, below which it’s hardly possible to dare to ride normal MTB tires.
But nothing stays the same:
In the future, air pressure can be controlled in the tire‘s double chambers. In the outer chamber, the air pressure is extremely low - ideal for maximum off road performance. In the inner chamber, directly on the rim, there is high air pressure – even a very strong impact cannot dent the rim edge. At the same time, the inner high-pressure system secures the tire onto the rim. “Burping”, the dreaded loss of air at low pressure in conventional tubeless systems, is impossible.
PROCORE is derived from "Progressive Core". The core (internal high pressure chamber) progressively absorbs even the hardest impacts.
You can mount Procore with any tubeless compatible MTB tire. The system is available for all three MTB wheel sizes (26“, 27.5“, 29“). Weight approx. 200 g per wheel. Compatible with all wheels, independent of the brand. Minimum inner rim width: 23 mm.
PROCORE is a joint development of SCHWALBE and SYNTACE.
PROCORE - the outer chamber
The outer chamber is tubeless. Therefore, any tubeless compatible MTB tires can be used. The tire is filled with some liquid sealant (approx. 60 ml) and should be at least 57 mm (2.25“) wide.
PROCORE - the inner chamber
Two special Procore components form the inner high pressure chamber: the special Procore tube and the Procore inner tire. This "core" is extremely high pressure stable and at the same time very light.
Of course, the rim must be tubeless compatible and sealed with a tubeless rim band. It should have an inner rim width of at least 23 mm. The wider the rim, the easier the installation and the better the performance under low air pressure. The very wide Syntace rims are a perfect fit.
The PROCORE valve
The patented dual valve of the Procore tube distributes the air into both chambers. The upper part of the valve is a selector. With a simple turn, you select whether air is pumped into the inner or the outer chamber.
The PROCORE Air Guide
The small red component made of white plastic ensures that the air can flow past the inner high pressure chamber into the outer low pressure chamber.
- Tire pressure can be reduced to a minimum 14 psi, thus providing a huge amount of grip. Even on the roughest terrain tires “stick” to the ground.
- The tire provides extremely sensitive cushioning.
- Due to the extra cushioning and traction there is much better steering, braking and traction control.
- No more risk of snake bites. The rims are extremely well protected from denting.
- Even in the toughest conditions, significantly lighter tires can be used.
- Excellent emergency running characteristics due to the internal high-pressure air chamber.
New: Test and riders’ impressions
THE FITTING PROCESS
- tubeless compatible tyre, minimum width 57 mm (2.25”)
- tubeless compatible wheel, minimum rim width 23 mm (with rim widths
of 21 or 22 mm the installation can turn out to be very difficult)
The inner chamber (1) consists of the Procore inner tyre and the Procore tube with dual valve. The outer chamber is the MTB tubeless compatible tyre (2).
The rim must be airtight or sealed with the tubeless rim tape. The tape should completely cover the rim base (3). A single layer of rim tape is sufficient. If the supplied 25 mm tape does not fit perfectly, buy tape of a suitable width to replace the one supplied. To pierce a hole for the valve, simply push the valve through the rim tape. Reinforce the rim tape in the area of the valve with the transparent sticker supplied to ensure optimum valve fit (4).
First install the Procore inner tyre and the special Procore tube like you would a normal clincher tyre and tube (5). Place the airguide above the valve (6) and position the inner tyre so that the grooves of the airguides are visible through the small hole (7).
Then install the outer tyre: Place the entire wheel inside the tyre. Install both beads from the left or right (8).
Before fitting the second tyre bead: Make sure that the inner tyre is still in its correct position. The line marking must be positioned perfectly at the valve (9).
Complete the installation at the valve on both sides. Caution: Before levering the last section of the tyre over the rim edge, make sure that the tyre bead is in the drop center of the rim over its complete circumference. The special Procore tyre lever helps a lot when fitting is difficult. You can hook it in onto the rim (10).
It will fix the already fitted area of the tyre bead so that it remains inside while you lever the final section over the rim.
After installation: Fill with the Doc Blue sealant! Using the tyre lever a small section of the outer tyre needs to be levered up (11).
Dosage: 60 ml per tyre. Shake the bottle well before use. Caution: The Procore system has a special valve. Do not fill the sealant through the valve! Be sure to use the special valve nut with its integrated anti-turn protection in order to seal the valve onto the rim (12).
Inflation of the inner tyre as well as the outer tyre is through the Procore dual valve. The upper part of the valve (selector) is designed to be set: With the valve completely screwed in the inner chamber is filled (13).
With the valve completely screwed out (about 6 turns) the outer chamber is filled (14).
Inflating and air pressure:
1) Inflate the inner chamber to 3 bar. 2) Inflate the outer tyre until it has bedded in properly over the entire circumference. (Use Easy Fit assembly liquid, only if the bedding in of the tyre turns out to be problematic.) 3) Subsequently, inflate the inner chamber to a pressure of 6 bar and the outer chamber to the desired pressure. Valve protection: While riding the selector should always be screwed in. Hand pumps should only be used carefully. It is best to only use pumps with a flexible valve connector. The optimum tyre pressure depends upon rider weight, riding style and preferences. Start with 1 bar then experiment with new possibilities.
Everything in one set for the conversion of two wheels to PROCORE.
2 x PROCORE inner tyre
2 x PROCORE special tube
2 x PROCORE AirGuide
2 x 60 ml Doc Blue
Tubeless rim band (25 mm)
Easy Fit / 50 ml sponge applicator
|26“ PROCORE||Set||Art-No. 16610001||€ 179,00|
|27.5“ PROCORE||Set||Art-No. 16610002||€ 179,00|
|29“ PROCORE||Set||Art-No. 16610003||€ 179,00|
Tyre Levers: The colour blue is a trademark of Park Tool for bicycle tools and is used under license.
PROCORE INNER TYRE
The special inner tyre for the PROCORE system - light and high pressure stable.
|26“ PROCORE inner tyre||Art.-No. 11600759||€ 49,90|
|27.5“ PROCORE inner tyre||Art.-No. 11600760||€ 49,90|
|29“ PROCORE inner tyre||Art.-No. 11600761||€ 49,90|
Special tube for the PROCORE system. Fitted with the patented dual valve to fill both air chambers.
|26“ PROCORE tube||Art.-No. 10400213||€ 19,90|
|27.5“ PROCORE tube||Art.-No. 10400223||€ 19,90|
|29“ PROCORE tube||Art.-No. 10400233||€ 19,90|
A small part with a crucial function: the AirGuide guides the air from the dual valve into the outer chamber. Can be used for all three wheel sizes (26“, 27.5“, 29“).
|PROCORE AirGuide||Art.-No. 3671||€ 2,90|
Doc Blue Professional
Ideally suited for Tubeless conversions. Produced by Stan’s NoTubes! It can also be used as a puncture preventative for bicycle tubes, tubular tyres and standard Tubeless systems.
60 ml bottle, Art.-No. 3710
500 ml bottle, Art.-No. 3711
Dose: 60 ml/tyre (Race bike 30 ml). Effective ca. 2-7 Months. Thereafter dries to a rubber film. Can be renewed. Only suitable for tubes with a removable valve core. Ineffective on large defects (cuts/bursts).
Tubeless Rim Tape
The tubeless rim tape is extremely user friendly and at the same time very high pressure resistant. Even on road bikes a single ply of tape is sufficient.
10 m x 19 mm, Art.-No. 887019
10 m x 21 mm, Art.-No. 887021
10 m x 23 mm, Art.-No. 887023
10 m x 25 mm, Art.-No. 887025
10 m x 27 mm, Art.-No. 887027
10 m x 29 mm, Art.-No. 887029
Makes changing tyres a snap. The new shape and surface of the tyre lever makes the assembly and disassembly of a tyre more enjoyable. For both tyres and hands too!
The new tyre levers are especially helpful in difficult assembly operations. Clip it onto the rim, to fix the already mounted section of the tyre, and it won‘t slide out when the last section is levered onto the rim.
3 piece set, Art.-No. 1847
The colour blue is a trademark of Park Tool for bicycle tools and is used under license.