OS 91HZ-PS w/ New 61B-PII Carb IN STOCK!!
UPDATE: Today we received an e-mail from Bert Kammerer stating the new OS 91HZ-PS is *not* the same engine he has been testing recently. While the new 61b-PII carb does feature an updated regulator...
View ArticleDetailed Pics and Descriptions of the New OS 91HZ-R Regulated Engine!
Our friends at RC Mania magazine have a new OS 91HZ-R and have taken it apart to take a look! This is a fantastic breakdown of the new regulated 91 from OS by the people at RC Mania. They take each...
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