All mine are crossing two other spokes. Thanks very much for your message. You should NOT have any trouble with spokes on our trikes. There are a number of factors to concider, and which should be taken into account when building wheels for trikes. The main ones are care in choosing the rim, the hub, the pattern, and the method of lacing.
Spokes are also important, but to a lesser degree.
Now there are two answers to this problem. The other method is to use a single cross pattern to reduce the angle at the rim. I notified Sachs of this problem, and I am expecting some new hubs made especially for wheelchairs and trikes shortly. I shall announce when they become available. Thus it is normally recommended to make sure that the spokes which are in tension under braking have their heads on the inside of the wheel.