Hiperbipe

 

Hiperbipe - plan thumbnail image

Hiperbipe - completed model photo more pics (1)

Hiperbipe  
by Phil Moore
from Radio Modeller (ref:197)
June 1978 
57in span
Tags: Scale IC R/C Biplane Civil
all formers complete :)
got article :)


Submitted to Outerzone: 06/04/2017
Outerzone planID: oz8595 | Filesize: 1565KB | Format: • PDFbitmap | Credit*: JJ

   

About this Plan

Sorrel Aviation Hiperbipe - Scale model for .60 engines and five function radio control.

Quote: - "BACK in February 1976 when my copy of Aeroplane monthly arrived, I (and a few others) was fired with enthusiasm for the home-built bipe that was pictured on the cover, so I did a few sums! My aim was to build something for competition and fun flying and, with that, test the feasibility of building it again for Class-1 judging.
The size was to be as big as an average 60 could be expected to pull,-and, to cut a long story short, I decided on 2-1/2in to 1ft (just over 57in wing span). Smaller, I thought, would be short on lift - a theory which, in the light of experience was unfounded - and larger, would have given a really vast fuselage. The next thing to do was to 'dig up' some more gen. After referring to Janes 'All the World's Aircraft', I wrote to Sorrell Aviation in the U.S.A. who sent me a good set of detailed photographs and a plan.
The construction is fairly straightforward and should present no problems to anyone who has built a few models. The only unusual feature is the wing fixing, which is basically the sailplane system of tubes and rods. For retention, you 'leap inside' the fuselage with four bolts, one for each wing. This overcomes the problem of that big window in the cabin roof and maintains a smooth, uninterrupted fuselage underside.
...Once you have the cg and thrust-line right, you will find Hiperbipe's handling very good indeed, and it is responsive at all speeds. With the flaps down, in any sort of wind, you should take care not to hover too long, is it does not look authentic! Take-off is easy, but should not be hurried. Feed on the throttle and hold her straight allowing the tail to rise. When the speed is good (subject to strip type and condition) lift her off with a small dab of elevator. Don't attempt to climb until the model's airspeed increases. The landing approach is also good, with the model seeming to settle into a definite groove and needing only minor assistance with elevator and throttle.
Aerobatics are straightforward, with a 'snappy' roll rate, but loops should be kept rather small or the top will get a bit floppy. This will depend, to a certain extent, on the motor and the weight of your model. Incidentally, the scale loops I have seen are usually quite small. I would rate the Hiperbipe as a very versatile model, from Sunday-flier to competition entrant, and I wish all its builders 'Happy Landings'!"

Direct submission to Outerzone.

Update 12/04/2017: added article, thanks to RFJ.

Supplementary files

Article.

Corrections?

Did we get something wrong with this plan? That happens sometimes. Help us make a correction

 

User comments

No comments yet for this plan. Got something to say about this one? Click here to Add a comment

 

Notes

* 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.

Scaling

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.

 

Terms of Use

© Outerzone, 2011-2017.

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.