Bristol M1D (oz2991)
About this Plan
Bristol M1D. Scale rubber model racer.
Quote: "Try a Red Racer. Build our Bristol M.1D. Especially for Scale enthusiasts - this Twenties racer is hot from Bill Dennis' drawing board .
I CAME AWAY FROM last year's Indoor Nationals fired with enthusiasm to build an exotic successor to my Avro Avian (oz2922) - so much so that I gave the Avian away to force myself to produce a new model! However, as we all know, there is never enough time to build all the models we would wish, and eventually the main criterion for my choice of subject was simplicity.
The Bristol Monoplane has been tackled many times, of course, but usually in its M1C version, the one with the enormous spinner which makes alterations to the thrustline a real problem. The M1D presented here was fitted with a Bristol Lucifer engine, and was raced successfully in the early 20s. Finished in scarlet and black with extensive white lettering, it is also an extremely attractive subject. However, nobody would claim that it was an ideal configuration for a rubber model. Bearing in mind its very short nose care must obviously be taken with the weight of the rear end - and remember that there is a weight limit of 85 grams for models entered for Indoor competitions (this year, at least).
The main lesson I learned from the Avian (published in the February 1986 Aeromodeller) was the benefit of designing the model as large as possible, using the weight rule to its maximum if necessary, in order to get a realistic appearance.
The Bristol is a deceptively simple model which goes together quickly. It would certainly make a super CO2 model, probably with a saving in weight too, and I shall probably convert it after this year's Nationals. Perhaps someone will beat me to it?
Build your Bristol! There is a lot of wood in this model, so choose it carefully to do the job needed and no more. After laminating the outlines to wings and tail, be sure to let them dry thoroughly for a couple of days or they will spring out of shape, eventually to cause warps when forced back. The wing tip ribs are cur down in length and are carefully shaped to correct section, sanding them with a long block. Fit the wing tubes with the aid of lengths of wire between each panel to ensure correct alignment.
The fuselage is built in the same way as the full size machine; that is, as a basic box with supplementary formers and stringers. A common error is to assume that the fuselage cross section is circular throughout but this is not the case, as it is almost rectangular at the position of the tailplane leading edge. The best way to make sure you get this right is carefully to sand the stringers while referring to photographs of the real G-EAVP!
The aluminium tubes for wing dowels and undercarriage are now fitted, and sheeting follows. The round nose cowling is shaped from balsa and hollowed, although a plastic moulding would look better. A reasonable facsimile of the Lucifer engine can be based on the large Williams dummy cylinders available from SAMS. The prop shaft is carried on two tinplate bearings, the rear of which can be adjusted to alter the thrustline. This is so much better than using bits of packing behind the noseblock..."
Quote: "...a very nice scale rubber model of the Twenties racer the Bristol M1D from Bill Dennis. This has long been a popular scale subject and the M.1D version was powered by a Bristol Lucifer engine saving the making of an enormous spinner and giving the opportunity to add a little bling up front. Bill designed it for rubber but suggests it would also be very suitable for CO2 power with useful weight savings to be made."
Update 22/06/2016: Added alternate scan, thanks to MikeWight.
Update 19/05/2019: Added article, thanks to algy2.
Supplementary file notes
Alternative scan, not stitched, in greyscale.
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 Bill Dennis
Scale Rubber F/F Racer Civil
all formers complete :)
got article :)
Found online 01/06/2012 at:
Format: • PDFbitmap
Bristol_M.1 | help
see Wikipedia | search Outerzone
ScaleType: This (oz2991) 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_M.1
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 commentsHere are a couple more photos of another model, this time the Bristol M1D by Bill Dennis from Aeromodeller, oz number oz2991 [more pics 005-008]. A bit of a change here, I built this model as the WW I Fighter that it was to start with, not as the later racing version, mainly to try out some coloured tissue I had recently bought that I thought may look the part. It turned out to be one of the nicest models to build, cover and fly. Eventually of course, the tissue started to deteriorate so I sold the model along with the proviso that they re-covered it!
John&Kath_French - 11/02/2019
Original RCG scan is the better one... I think
fred - 19/05/2019
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.