I think it's normal for Motorhead to have 2 bands open up for them when they headline.

In 1982 Krokus and Fist opened up for them and when I saw them last year 2 bands opened up for them again. I think part of the reason Motorhead does this is because they don't do a really long set and they want to give the audience their money's worth of entertainment. To tell you the truth though, I'm not really a big fan of having 2 opening acts especially when they are groups I've never heard of. In 82 I enjoyed the Krokus segment (I had seen them before during the 'Metal Rendezvous' tour - that album is quite good BTW)