Wanted Rockshox Mag21 Fork Pump, just recently purchased a cannondale M300 that has Mag21s, thought i would be able to screw a football pump bit onto a standard shock pump but it does not work.
Les meilleures offres pour Rétro Pompe Rock Shox Mag 20 21 mag20 mag21 Rockshox sont sur eBay ✓ Comparez les prix et les spécificités des produits neufs et d'occasion ✓ Pleins d'articles en livraison gratuite!
Les meilleures offres pour Rétro Pompe Rock Shox Mag 20 21 mag20 mag21 Rockshox sont sur eBay ✓ Comparez les prix et les spécificités des produits neufs et d'occasion ✓ Pleins d'articles en livraison gratuite!
Saw that one, i dont really want to spend that much on it. They will only be pumped up once then left.....was hoping someone would have an old one in shed/garage.
Saw that one, i dont really want to spend that much on it. They will only be pumped up once then left.....was hoping someone would have an old one in shed/garage.
I've been through this recently, has your football needle got a hole in the side near the tip? If so cut it off just below the hole, also if you had to use a presta/schraeder adapter between the needle and the shock pump, this was where air was escaping on mine, then put an O-ring between them to make it airtight, I used a band of old tube, wrapped round. After I'd done this it worked fine.
All you need is the needle, even a hole at the side should work.
On a MAG21 the needle goes through the 'valve' and the end tends to locate into small recess in the top of the adjuster rod, this keeps it steady.
a hole at the side if poor quality can tear the valve.
Otherwise, it is your pump with a problem, what are you using?
...or you forks are leaking the air through the 'valve' (just a bit of rubbery plastic material)
(or your needle and it is damaged, the needle part does sometimes come loose from the thread part or the seal for the adaptor itself isn't made, some lack an o-ring here or there in the pump head.)
But
I've used this style of bump (and still do) but with a dial that reads to ~60PSI, most come with high pressure dials.
You only need accurate ~40PSI reading.
I have many of the syringe pumps, but they all fail eventually.
Only the 'black' rigid one last a long time, and is much easier to use.
Apologies if you've tried this already - but if you get a pump bit/ kit with an adaptor tube then you should be able to fit it to a modern shock pump. It's what I did for my 1993 Specialized Future Shock forks.
5 Pcs Pump Adaptor Kit. Pumping up tyres, air beds and balls with these pump adaptor kit. Pump Adaptor Kit. Suitable for Bicycle tyres, most inflatable balls, footballs and air beds. 1 kit with 3 needle.
www.ebay.co.uk
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