Varible speed is needed for bits over about an inch in total circumfrance.
The really big ones like raised panel bits that are three inches or bigger
you should slow the router down to under 12,000 rpm.

Does it really matter on a router this size though? I dont know I wouldnt
think it has enough power to have variable speed and be usefull. I see all
these under 2hp routers with vs a marketing gimmick. You need more power
IMHO.
"Ming Chiou" wrote in message
news:1058417201.906833@sj-nntpcache-5...
I'm new to woodworking and was wondering which router get for general
purpose use, the 690LR or the 690LRVS? What would be the advantage of
having a variable speed router? My first project will be making some flat
panel doors for some linen cabinets.

Thanks,
Ming