A4 System One chamber progressed: Two chambers progressed: Three chambers progressed: Four chambers progressed: Five chambers progressed: Six chambers progressed: Seven chambers progressed: 5 theoretical operating keys 25 theoretical operating keys 125 theoretical operating keys 625 theoretical operating keys 3,125 theoretical operating keys 15,625 theoretical operating keys 78,125 theoretical operating keys Figure 18. If you were using a 7-pin core in an A4 master keyed one-step progression, using a factor of five, this chart shows what you’d have. A3 System One chamber progressed: Two chambers progressed: Three chambers progressed: Four chambers progressed: Five chambers progressed: Six chambers progressed: Seven chambers progressed: member to think about “expansion” of your system, leaving many extra combi- nations for future use. It’s better to over- plan than to find yourself lacking at a later date. Key Blanks Each Kaba Peaks key blank is restricted and has an ID number that must remain intact. It cannot be removed, stamped over or altered. Those under contract may not duplicate another party’s key blanks, and blanks cannot be sold, lent out or given away. Kaba states that all key records must be maintained and autho- rization procedures followed to not lose the product line. 6 theoretical operating keys 36 theoretical operating keys 216 theoretical operating keys 1,296 theoretical operating keys 7,776 theoretical operating keys 46,656 theoretical operating keys 279,936 theoretical operating keys Figure 19. If using a 7-pin core in an A3 master keyed One-Step Progression, using a fac- tor of six, this chart shows what you’d have. ber 1 (.0125") wafer pin does exist, you won’t find it in any OEM or aſtermarket A2 pin kit. Let’s explore the added key changes that exist in a single increment A4 Sys- tem. If you were using a 7-pin core in an A4 master keyed one-step progression, using a factor of five, Figure 18 shows what you’d have. 78,125 is surely a big difference from 16,384 as given in this two-step progres- sion type. Let’s see what the A3 System can provide. If you were using a 7-pin core in an A3 master keyed One-Step Progression, us- ing a factor of six, Figure 19 shows what you’d have. 48 KEYNOTES SEPTEMBER 2016 Read Carefully. This is why the SFIC A3 and A4 systems are single increment Remember that their pin lengths (incre- ments) are different; everything else is the same. Remember that the A3 System isn’t reliable and is generally no longer used based on key interchange and especially core failure. But, the A2 and A4 systems are both still used. Order of Progression When you’re deciding the order of the progression sequence in the chambers, several factors should be considered. First, how many chambers will be held (not progressed)? Second, how many combinations are necessary? Always re- illiam M. Lynk, CML, CPS, ML, M.Ed. has been a ksmith since 1975 and the owner of www. Sglobal.com. Bill is an IC specialist, an industry author, the subject matter expert on IC for ALOA, and an ALOA ACE instructor, teaching classes on interchangeable cores and master keying across the country. He has originated SFIC Technical Manuals for both national and international lock manufacturers, and main- tains a working relationship with the major lock and security manufacturers throughout the world. In 2013 and 2015, he was named Keynotes Author of the Year. WWW.ALOA.ORG Figure 20. Each Kaba Peaks key blank is restricted and has an ID number that must remain intact. In the next installment, we will go over the key tolerances, pins, pin kit, combi- nating and other topics related to this product line.
