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Lunch » Tags » Sport And Outdoor » Reviews » Zefal 23 Mini Double Shot

Zefal 23 Mini Double Shot

1 rating: -1.0
Sport and Outdoor

<br>Now available with an optonal Soft touch handle, a alloy thumblock lever and a alloy cover cap<br>Up to 6 bar / 90 PSI<br>Weight 100 g<br>

1 review about Zefal 23 Mini Double Shot

Emergency Use Only Please!

  • Aug 17, 2003
  • by
Rating:
-1
Pros: Very lightweight, compact, fits in jersey pocket

Cons: Not durable, takes many strokes to obtain desired psi.

The Bottom Line: For weight weenies willing to sacrifice durability and stroke efficiency.

This review is based on two years use for road and mountain biking use. When this pump first came out, Mt. Zefal touted the lack of weight to cater to the weight weenies out there. I will try to highlight several areas of this pump in order for you to make your own judgment about this pump.

Weight: It is definitely one of the lightest on the market. My grams scale showed that this pump weighs in at a feathery 100 grams.

Pump handle: Made of plastic that is a straight piece that does not fold. Luckily, the end of the handle is rounded so that it will not hurt your hand when you start to pump at higher pressure.

Pump body and head: Again, all made of plastic. Even the thumb lock on the pump head is made of plastic. In order for this small (8 inches when fully compressed) pump to achieve more air volume, there is an extension tube within the body to almost double the volume of air. When fully extended, the pump is approximately 15 inches long. Within the pump head, there are two plastic adaptors in order for the pump to work with Schrader or Presta valves. It takes less than a minute to perform this change. The only metal in this pump is a rod that holds the thumb lock in place to the pump head. The thumb lock is easy to use when new (more on this later).

Pumping Ease: It definitely starts easy but becomes very difficult to pump once the pressure exceeds 60 psi. This pump is rated for a maximum pressure of 90 psi but in my experience using it on my road bike, I was lucky to reach 70 psi with lots of effort. With each stroke of the pump, my mountain bike tire would increase by .25 lbs. With my road tire, each stroke would increase the tire pressure by .33-.50 lbs. If you do the math, you would have to pump at least 150 strokes to obtain decent tire pressure for either the mountain or road tire.

Ergonomics: Definitely not one of the better pumps in this department. Many of its competitors now use a folding handle to give you a better grip while at the same time, more leverage. If this pump had a folding handle, I can probably see the 90 psi maximum rating. Without it, there is much difficulty pumping to higher pressures. Pump head and thumb lock ergonomics are similar to other compact pumps as well as normal floor pumps.

Accessories: The pump comes with two plastic clips for you to attach the pump to your bike's water bottle holders. I definitely recommend using them on your road bike but don't try them on your mountain bike. They don't hold the pump that securely for off-road use. I have seen this pump launch itself a couple of times during my off-road downhill runs.

Durability: This is an area of weakness. This is where I would like to bring to your attention more about the metal rod that holds the thumb lock in place. What I have found over time, this metal rod will slowly cut through the plastic head that holds the thumb lock. When this happens, the thumb lock now becomes useless because it can't lock the pump head to the tire's valve anymore. It then becomes pump replacement time. Other than that, the rest of the pump can take a beating.

Conclusions: I have reservations recommending this pump due to two factors. The first, it takes many strokes in order to pump your tires to any decent pressure and second, the metal rod that cuts through the pump head. Having this pump is better than not having a pump at all. If you are a weight weenie, you may be willing to live with these shortcomings, but for me, I would rather go with something like Topeak's Road Morph. You will find that I did a review of that pump for Epinions. Hope this review has been informative for you.

Recommended:
No

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