Frost Patent Engine Syndicate
Formed by Romney Frost, a Castrol representative who designed a four-cylinder motorcycle engine described as an opposed tandem twin. The engine was 791 cc and produced 21 bhp and 3,000 rpm.
He also tested a Frost motorcycle but it did not go in to production
Sources of Information
- London Gazette 7 November 1919
- Powered Vehicles made in the Black Country by Jim Boulton and Harold Parsons. Published 1990. ISBN 0 904015 30 0