I'm using a blackburn trakpump sport 2 bicycle pump. how do i secure it on the stem to fill the tire?

If I understand, you are tying to fill a tire with an air pump.

I would start by seeing if the pump works without attaching it to the tire nozzle. Is it easier to push now? I wouldn't expect the pressure gauge to go up at this test, as there will be no pressure built up. If you are still having trouble, the pump might be malfunctioning or blocked by something.

If all works well, make sure you push the hose adapter firmly on the tire stem to open the air flow, using any locking mechanism to secure it down. It can be tricky to get this on correctly.

Download this from Blackburn. It will give you an idea how it all fits together even if it's not a Blackburn pump.

http://www.blackburndesign.com/manuals/Mammoth_Airstik_MAP.pdf

Not all pumps come ready for schrader. Maybe you have to reverse the head parts.

http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html

1. Rotate the wheel so the valve is resting just above the floor. Remove the valve cap.
   

2. Unscrew the locking nut on the valve stem. Quickly press down the stem to loosen the seal. You should hear air escaping when the stem is pushed in--if you do not, loosen the nut and try again.
3. Press the pump head onto the valve and flip the locking lever to make a seal. You'll hear air escape, but it should stop after you've locked the lever. If air continues to leak out, remove the pump head and reattach it.
4. Make two pump strokes and listen for air moving into the tire. If the pump handle becomes hard to press down after only a few strokes, or if the pressure gauge elevates extremely quickly, remove the pump head and repeat Step 3.
5. Inflate the tire to its recommended pressure. Remove the head by unlocking its lever and quickly pulling it off the valve stem. Secure the valve's locking nut and cap.

Read more: How to Inflate a Bicycle Tire With a Presta Valve ' eHow.com http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html#ixzz1Brv5VfAX

http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html

1. Rotate the wheel so the valve is resting just above the floor. Remove the valve cap.
   

2. Unscrew the locking nut on the valve stem. Quickly press down the stem to loosen the seal. You should hear air escaping when the stem is pushed in--if you do not, loosen the nut and try again.
3. Press the pump head onto the valve and flip the locking lever to make a seal. You'll hear air escape, but it should stop after you've locked the lever. If air continues to leak out, remove the pump head and reattach it.
4. Make two pump strokes and listen for air moving into the tire. If the pump handle becomes hard to press down after only a few strokes, or if the pressure gauge elevates extremely quickly, remove the pump head and repeat Step 3.
5. Inflate the tire to its recommended pressure. Remove the head by unlocking its lever and quickly pulling it off the valve stem. Secure the valve's locking nut and cap.

Read more: How to Inflate a Bicycle Tire With a Presta Valve ' eHow.com http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html#ixzz1Brv5VfAX

What's different?

http://www.youtube.com/watch?v=Ehf6HL0aLTc

http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html

1. Rotate the wheel so the valve is resting just above the floor. Remove the valve cap.
   

2. Unscrew the locking nut on the valve stem. Quickly press down the stem to loosen the seal. You should hear air escaping when the stem is pushed in--if you do not, loosen the nut and try again.
3. Press the pump head onto the valve and flip the locking lever to make a seal. You'll hear air escape, but it should stop after you've locked the lever. If air continues to leak out, remove the pump head and reattach it.
4. Make two pump strokes and listen for air moving into the tire. If the pump handle becomes hard to press down after only a few strokes, or if the pressure gauge elevates extremely quickly, remove the pump head and repeat Step 3.
5. Inflate the tire to its recommended pressure. Remove the head by unlocking its lever and quickly pulling it off the valve stem. Secure the valve's locking nut and cap.

Read more: How to Inflate a Bicycle Tire With a Presta Valve ' eHow.com http://www.ehow.com/how_4779541_inflate-bicycle-tire-presta-valve.html#ixzz1Brv5VfAX

http://www.blackburndesign.com/manuals/3xPumpsManual2010_v2.pdf


see the last page

http://www.blackburndesign.com/manuals/Mammoth_Airstik_MAP.pdf

Why? it should work unless the valve on the tyre is faulty than you need an inner tube for it. You can order inner tubes from www.buggypitstop.co.uk

Your Blackburn pump has a lever on the end that you need to open before you can slip it onto the valve stem of your tube, then clamp is closed to make it seal. Then just pump it up while holding the head (end) of pump tightly on the valve stem. Check the pressure with a gauge to know when its full.

Dear Doug, to lock a hand pump onto the valve stem: 1.depending on valve type-loosen the valve lock for presta, twist off valve cap for schrader. 2.unlock the pumping handle from the pump so that you can actually "pump" the pump... 3. put the pump head on the valve of the tire, then pull up on the thumb tightening lever. This should squeeze toghether the internal rubber gasket of the pump, and lock on to your valve. 4. Begin pumping. 5. when desired pressure has been reached, push down on the thumb lever to unlock the pump. Remove it. Good Luck Fellow bicyclist!