Bristol Bulldog (oz2022)
About this Plan
Bristol Bulldog. Scale biplane free flight model. The model was designed by P.J. Allnutt for 1 to 1.5cc motors. The wingspan is 33.3/4 in. Scale is 1/12. This is a modern redrawn plan in PDFvector format.
Quote: "WE ALWAYS LIKE to make personal acquaintance with our contributors particularly those who submit designs which are accepted for Plans Service but rarely do we expect anyone to call us from far off Toronto in Canada. Such was the case, however, when Peter Allnutt paid us a surprise visit! Being an airline employee Peter was able to make a trip back to the old country for his holiday and was able to spare some time to see how we were getting along with his drawing - and what a drawing! His 1/12th scale Bulldog has achieved some fame in Eastern Canada with its realism in flight and accuracy in detail. Peter sent us some colour photographs which unfortunately we cannot reproduce in anything but black and white and which serve to emphasise the intricate paintwork and engine detail applied to the prototype which is a prize winner in its own right.
Moreover, experience in the aircraft industry has taught Peter an appreciation of what is required by the scale enthusiast in the way of a model drawing and in consequence he has been able to really pile on the information in plan which is seen opposite.
In designing this 1/12th model, Peter Allnutt has followed closely the full-size structure of the Bulldog, particularly in the fuselage. The 1/8th sq basic structure is of spruce for the same reason that the full-size was of steel tubing namely strength.
Building this requires the laying down of two sides on the plan. The rear ends of the longerons, at last spacer position are cracked inwards or made into scarff joints. Forward spacers can be added to join fuselage sides, and then rear ends brought together reinforcing the joints with 1/8th gussets. Diagonal spacers are fitted, noting opposite direction of lower pieces.
The 1/8th ply reinforcements to which wire struts are bound, are drilled on the wire outline with fine holes and cemented in place. Four-piece formers F1 to F10 fit onto the basic fuselage structure. Note. F1 to F3 are from 1/8th ply.
Behind F3 a 1/4 in block is glued. This is faced with 3/32nd ply to which the 1/16 in 1/D undercarriage brass tube is sewn and glued. U/C can now be bent to shape from 16 s.w.g. piano wire. Cabane and lower centre section struts are made from cycle spokes with threaded ends outermost, and bound to the ply pieces on the forward fuselage..."
Supplementary file notes
Article pages, text and pics.
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
by PJ Allnutt
Scale IC F/F Biplane Military Fighter
all formers complete :)
got article :)
Found online 14/12/2011 at:
Format: • PDFvector
Bristol_Bulldog | help
see Wikipedia | search Outerzone
ScaleType: This (oz2022) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.
If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.
ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Bristol_Bulldog
Wikipedia page addresses may well change over time.
For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.
Do you have a photo you'd like to submit for this page? Then email firstname.lastname@example.org
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, 2011-2019.
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.