Ok, lets do the math for 500 troops. (I'm going to assume in the following #'s that troop upkeep and gold from crpg cancel out or are negligible)
Time to recruit 500 troops @ 100% recruitment rate: 500 manhours
Cost to recruit 500 troops @ 5 gold per hour: 2,500 gold
Equipment for 500 troops:
500 * 107.16(Studded Leather Coat) = 53,580
500 * 31.76(Nasal Helmet) = 15,880
500 * 11.56(Leather Gloves) = 5,780
500 * 6.12(Sarranid Leather Boots) = 3,060
150 * 26.16(Falchion) = 3,924
400 * 30.04(Old Heater Shield) = 12,016
100 * 30.16(Two Handed Axe) = 3,016
150 * 5.08(Pitch Fork) = 762
150 * 34.84(Short Bow) = 5,226
450 * 6.44(Arrows) = 2,829
Total cost for equipment: 106,073
Estimated gold per hour via trading: 12/hr (based on averages I've calculated)
Total cost for troops and equipment: 108,573
Time to raise 108,573 @ 12/hr: 9048 manhours
Total manhours: 9548 manhours
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Time per member - 50 man clan: 191 hours
Time per member - 25 man clan: 382 hours
Time per member - 10 man clan: 905 hours
So at this rate a 50 man clan will need 8 days to raise and equip a 500 man army, assuming all members are active and working at 100% efficiency (ie just pumping out trade goods and recruiting, no traveling or anything else).
A 25 man clan will need 16 days.
And a 10 man clan will need 38 days.
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The underlying problem is it takes 18x longer to equip a soldier than it is to recruit him.