1954 Wakefield (oz10696)
About this Plan
1954 Wakefield. Rubber competition model.
Quote: "When the Wakefield rules were radically revised to limit motor weight to 2.82 ounces, MAN asked one of the world's most respected designers and writers on the subject to prepare this analysis and accompanying plane drawings. The 1954 Wakefield Model, by Ron Warring.
Starting with the 1954 Wakefield there is one major change in the specification. Size and minimum total weight of model remains as before but motor weight is to be restricted to a maximum of 80 grams of rubber (lubricated). It is not the purpose of this article to discuss whether the rule change is a good one or not (although my personal opinion is that it is a very bad one), but rather to examine the effect this new rule will have on Wakefield design.
For a start it will put a premium on good rubber. Limited to 80 grams or 2.82 ounces lubricated rubber weight, only the best rubber will do. The weight rule is equivalent to a maximum of just about 40 feet of lubricated 1/4 x 24 Perelli strip which I use and which will make up into the following motors:
12 strands-40 in long made up. 44 in long when broken in.
14 strands-34-1/2 in long made up. 38 in long when broken in.
16 strands-30 in long made up. 33 in long when broken in.
These possible motor lengths seem to indicate pretty clearly that both the long fuselage Wakefield and return-gear designs are ruled out for new Wakefields. The object of both these layouts is to use motors in a taut state in the fuselage. We can now use taut motors, if we wish, in fuselages of average length without the extra vulnerability of the long fuselage or com-plication of gears.
Modern Wakefields with 12 strand motors are capable of excellent and consistent performances even in poor conditions, but have relied very much on a long power run to ensure a four minute plus duration. Since we cannot now use a long, low power (i.e. small cross-section) motor, it becomes doubtful that anything less than a 14 strand motor will do. This can be accommodated taut between hook distances equal to 38" when fully broken in, which will probably set a standard for the longest fuselage lengths likely under the new rules, Such a motor will then take around 1,000 turns.
Before ruling out the geared model entirely, there is the possibility of splitting this 38 in motor length into two 19 in motors, and a short fuselage design with necessary tail moment given by a long tail boom carrying fin and stabilizer..."
1954 Wakefield, MAN, June 1953.
Direct submission to Outerzone.
Supplementary file notes
Article pages, thanks to RFJ.
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsNo comments yet for this plan. Got something to say about this one?
Add a comment
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2020.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.