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FAQs from Scoprega

  • Question: Most kites now have valves in the main bladder and the back pressure from those valves is triggering the switch from low pressure to high pressure pumping. Is this something that can be tweaked by service personnel or possibly changed in a future version of the pump? As it is now the low pressure assembly is only being used for a few seconds on many kites.
  • Answer: We supply standard a 7-piece universal adapter that should be OK with the most common kinds of valve; we also have different adapters in our catalogue that can be purchased separately and that could suit different kinds of valve; but in case of special or non-standard valves, the adapter should probably be supplied by the kite manufacturer.
  • Question: We have noticed that when you remove the hose from its pocket, for pumping, the pump can lean and possible tip over. Is tipping still an issue with the LP pump assembly?
  • Answer: Waiting for an answer to this question.
  • Question: I am getting a lot of questions about the designs of the new pump's pump assemblies. I am afraid that there is an uphill battle with people that had bad experiences with the old hardware. If you could provide us with more technical information about the pump it would be very helpful in addressing these concerns.
  • Answer: The new pumps really are not comparable with the old ones, the assembly idea is new, easier and smarter. Also the pump's functionality is easier and the pump is more reliable. The most frequent problems of BST pumps have been solved:

    • The switch from LP to HP has been improved: it is a flow-switch composed of a magnet and a reed, so it's a magnetic mechanism and more difficult to break than a mechanical one (as the BST micro spring)
    • The fan has been reinforced and ribbed; it won't break.
    • Better HP performance (1 bar = 14.7 psi) is attributable to a single high efficiency piston (instead of BST's 2 pistons).
    • The new design also has better interior ventilation.
    • Also the hose has been reinforced for HP, and the screw connection provides more grip.
  • Question: We are still wondering about the BK charger. I have been telling people to stick with the 10-hour charging time and disregard the red->green light statement in the instructions. There have been some concerns about the heat of the battery. I do not know what to say about that. More technical information about the BK would be helpful.
  • Answer: First of all be informed that we decided to give up the multi-purpose charger idea, as we faced too many troubles with it. In a short time both the batteries (NiMH and Lead-Acid) will have different chargers for 120 V and 230 V. The charging cycle of the new batteries is 10 hours, the heat is normal and there is no risk that they will get damaged before their standard lifetime (NiMH is 800 hours, Lead-Acid is 400 hours). Regarding the Lead-Acid battery, since it suffers the memory effect, obviously a 400 hour lifetime depends on a right way the battery is used:

    • If it will not be used for some months, it is important to put it away completely charged.
    • During normal use it is important to always use the pump until the battery is completely (or almost completely) discharged, and then to always completely charge it (10 hours).
  • Question: We are still concerned about BK battery discharge. Can we run the battery until it stops pumping the kite or should we stop before that? How are we to know what is safe? Again, more technical information about the battery would be helpful.
  • Answer: NiMH batteries: you can charge the battery whenever you want. Lead-Acid batteries: when you notice the pump slows down or has serious difficulties pumping you have to recharge the battery (always 10 hours).
  • Question: There is unexplained behavior at higher pressures. The pump seems to shift mode or somehow sense that the pressure is getting higher in the kite and is either changing how it operates or is just laboring. What is odd about this is that it starts happening at about 5 psi, which is way below its 14.7 psi maximum pressure. I might expect it to labor at 12+ psi but not at 5. If the former guess (that it is changing its behavior) is correct, it would be nice to be able to tell customers that. Could we possibly get more technical information about the how the pump works?
  • Answer: The fan (LP) phase lasts up to 0.8 psi; the pressure is low but the volume of air is high and the structure has its first inflation. At 0.8 psi the pump switches to compressor (HP) phase. It is absolutely normal that as the pressure increases the pump works harder and the noise will be different.