Sleek Streak (oz6881)
About this Plan
Sleek Streak. Low wing sport model for single channel radio control.
Quote: "A simple pulsed rudder model for small engines and single channel radio. Sleek Streak, designed by Peter Holland.
How about a low winged model for a change? With modern lightweight equipment the small low winged model becomes a more practical proposition. Escapements, whilst an admirable solution for many models are now starting to be eclipsed by the use of ultra simple pulse rudder control. The recent contest at Rouen showed how well this form of control performed, in fact the winner of the single channel contest was a low winged, pulsed rudder aircraft of about 36 in wingspan. If you use a pulse transmitter or fit an extremely simple puller to almost any single channel transmitter quite an accurate degree of control can be available.
The standard circuit for multivibrators shown on page 387 could be made to switch a transistor transmitter such as the Easytran, or a relay used to switch almost any other. transmitter. A small receiver which is insensitive to interference when using motors of the Mighty Midget, T03 or TO5 types is simple to wire up either by using the bridge network shown in our 'Pulcycle' in the June 1964 issue or a TASA to boost the drive to the motor. A model as small as this does not need much torque to move the rudder so the T05 and the 141:1 gearbox can cope with the load.
Sleek Streak has a simple box fuselage but the side profile gives the appearance of a more sophisticated aircraft. The forward position of the cockpit serves to tidy up to nose and provide forward side area which has proved to be a useful aerodynamic feature. 1/16 in sheet sides are reinforced with 1/32 in plywood doublers from behind the TE right up to the nose. The tank and battery bay is accessible by removing a small hatch which carries the cockpit canopy.
The battery leads are terminated in a polarised snap fastener and plug on to a similar fastener on the outside of the fuselage. This eliminates switches, permits monitoring of the bat-tery voltage, receiver consumption, and may be used to connect a charger if DEAC cells are used. A flexible mounting is used for the T05 motor and a torque rod to the rudder ensures that slight fore and aft movement of the motor does not affect the rudder neutral position. A thin piano wire coupling is used to connect the torque rod to the slotted end of the gearbox shaft and a rubber band serves to centre the rudder. The band need not be tight enough to bring the rudder central when the batteries are disconnected, the band merely biases it towards neutral when a pulsed signal is fed in. Almost any pulse rate can be used between two and 10 CPS, the higher the rate the smoother the rudder movement but some receivers may not follow a high rate accurately.
Wings. Whilst the author prefers expanded polystyrene wings for speed, simplicity of construction and general toughness; orthodox construction is shown on the plan. Parallel chord has been chosen so that all ribs are cut to the same profile and thick pre-formed leading and trailing edge stock is used. The spar is cut from 3/32 in hard sheet and notched half way down at each rib position. This makes an accurate assembly when the spar, leading and trailing edges are pinned to the building board and the ribs cemented into the slots..."
Supplementary file notes
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, 2011-2021.
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.