Bontrager La bomba especial tubeless /Cogburn CB4 bici de caza y pesca / Barak convierte bicis a elèctricas

.-..-.-.-.-.-.-

Helicopter bike rack approved for commercial use
http://reviews.mtbr.com/video-helicopter-bike-rack-approved-for-commercial-use

.-.-.-.-.

Bontrager Flash Charger Tubeless Pump
Designed with an extra air tank to store compressed air


It retails for $120 and is designed with an extra air tank to store compressed air that can deliver a shot of air to seat tubeless tires.

Tubeless tires are all the rage right now but sealing some tire and rim combinations can be a difficult and frustrating task. Some combinations can be sealed by pumping furiously with a floor pump but many setups refuse to seal, specially on the first tire install. What is really needed is a shot of air to push the tire walls out and create a seal before the air escapes out. That’s why a compressor with a trigger valve is the fail-safe solution when sealing tubeless. But compressors can be bulky, noisy and expensive. And they can’t be taken out in the field where sealing jobs are sometimes necessary.
Bontrager came up with the Flash Charger pump after two years in development and it seems to be a good one. It’s a floor pump first and foremost and it works just like one when the auxiliary tank is in the open mode. But close the big red valve and the tank becomes an air storage unit where pressure can be built up. It took about 46 pump strokes to fill the reservoir to 160 Psi. And one flip of the red lever valve delivers a shot of air to seal up tubeless tires. The auxiliary tank will store all the air too and can be used at a later time.

Features:

Alloy barrel for smooth pump action
Auto-Select head effortlessly fits Presta or Schrader valves
Top-mounted 160 psi gauge
Three-arm base gives excellent stability
Inflates tubeless-ready tires without a compressor
MSRP: $120
For more information visit http://www.bontrager.com.

http://reviews.mtbr.com/video-bontrager-flash-charger-tubeless-pump
.-.--.-.-.-.-

Video: Bontrager Flash Charger Tubeless Pump
Designed with an extra air tank to store compressed air


By Francis Cebedo September 15, 2014 GEAR VIDEO
Bontrager Flash Charger

Update: September 15

The Bontrager Flash Charger arrived at the Mtbr office and we experimented with it right away. We found a brand new tire and wheel tubeless combo that we couldn’t seal with a floor pump. So we charged up the Flash Charger with about 40 pump strokes, getting it to 160 psi. The pump is high quality and although the effort did increase with the pressure, the pump felt secure and consistent all the way to 160 psi. The handle is plastic so we could feel a bit of flex when pumping at the highest pressures.

We put the universal presta/schrader valve on and proceeded without pushing the tire to rim wall or applying any soap/sealant to help seal the tire. We released the air with the red lever and voila, it worked as advertised. We tried it on a second tire setup and it worked like a champ again. The shot of air is not unrestricted because of the universal presta/schrader head. But it worked on our first tests no problem. We’ll continue to test more combos in the future.


Video: Sealing up a new tubeless rim and tire

The 160 psi charge sealed up a huge 29er tire to about 22 psi. And since the air chamber balances out with the tire pressure right away, one can just continue on pumping to further seal the tire or get to the desired pressure.

Originally Posted: August 1, 2014

Bontrager Flash Charger

One of the cool surprises we saw at Trek World in Madison, Wisconsin is the Bontrager Flash Charger tubeless floor pump. It retails for $120 and is designed with an extra air tank to store compressed air that can deliver a shot of air to seat tubeless tires.

Tubeless tires are all the rage right now but sealing some tire and rim combinations can be a difficult and frustrating task. Some combinations can be sealed by pumping furiously with a floor pump but many setups refuse to seal, specially on the first tire install. What is really needed is a shot of air to push the tire walls out and create a seal before the air escapes out. That’s why a compressor with a trigger valve is the fail-safe solution when sealing tubeless. But compressors can be bulky, noisy and expensive. And they can’t be taken out in the field where sealing jobs are sometimes necessary.


Video: Pumping the tank to 160 psi and releasing the air

Bontrager came up with the Flash Charger pump after two years in development and it seems to be a good one. It’s a floor pump first and foremost and it works just like one when the auxiliary tank is in the open mode. But close the big red valve and the tank becomes an air storage unit where pressure can be built up. It took about 46 pump strokes to fill the reservoir to 160 Psi. And one flip of the red lever valve delivers a shot of air to seal up tubeless tires. The auxiliary tank will store all the air too and can be used at a later time.

Features:

Alloy barrel for smooth pump action
Auto-Select head effortlessly fits Presta or Schrader valves
Top-mounted 160 psi gauge
Three-arm base gives excellent stability
Inflates tubeless-ready tires without a compressor
MSRP: $120
For more information visit http://www.bontrager.com.

http://reviews.mtbr.com/video-bontrager-flash-charger-tubeless-pump




.-.-.-.-.-.-.-.-.-.-.-.-.-

First Look: Cogburn CB4 hunting fat bike
It has a rack, big tires, and a camouflage frame. The Cogburn bike is an alternative to an ATV, as there is a movement of a younger demographic of hunters that may find a non-motorized option attractive. The Cogburn has an aluminum frame, disc brakes and gears, and a rack. The tires are 3.8-inchers from Surly. The rims, handlebar, and cranks are a no-glare black to blend in with the surroundings.

MSRP is $2,199 and the rack is optional at $130 and a frame bag for $130 as well.
http://reviews.mtbr.com/first-look-cogburn-cb4-hunting-fat-bike
.-.-.-.-.-.-.-.-.

Barak can reportedly be installed on almost any bicycle, and consists of a lithium-ion battery, a controller, a thumb throttle, and a front wheel with a hub motor. The wheel replaces the bike's existing front wheel; the battery/controller mounts on either the seatpost, in a bag on the frame or in place of a water bottle (depending on the model); and the throttle goes on the handlebar. According to Micah, the whole system can be installed without any special tools or expertise, within about 15 minutes.A Barak-equipped bike should have a range of 20 to 30 miles (32 to 49 km) per three-hour charge, and be capable of a top speed of 20 mph (32 km/h).

Unlike pedal-assist e-bikes that augment the rider's own pedal strokes, Barak is more like a scooter – you just press down the throttle, and it goes. You still can pedal while motoring, though, helping to prolong the battery life while also expending less physical effort. That said, Toll informs us that the controller is designed for the addition of a proper pedal-assist system that electronically senses and responds to each pedal stroke, which he may offer down the line.

The whole setup weighs 12 lb (5.4 kg), is being made in 350- and 500-watt versions, and will also come with either a 20- or 26-inch wheel.
When it comes to electrifying regular bikes, the Copenhagen Wheel and the FlyKly may seem like simpler alternatives. In both cases, users just replace their back wheel with one that contains a battery pack and pedal-assist motor, and is controlled by a smartphone app. Micah tells us, however, that Barak offers much more in the way of battery capacity (up to 36-volts/10 amp-hours), and more powerful motors that deliver considerably more torque.

He's currently raising production funds for the kit, on Kickstarter. Pledge amounts range from US$585 for the 350-watt 20-inch version to $655 for the 500-watt 26er. More information is available in the pitch video below.

Source: Kickstarter

https://www.kickstarter.com/projects/1354698863/barak-electric-bicycle-conversion-kit-electrify-yo

http://www.gizmag.com/barak-electric-bike-conversion-kit/33306/