|
|
|
View it first then Download
your free screen savers and desktop backgrounds here! Just click on
the link below
the screen saver you want.(Self executing) |
|
|
|
|
|
|
|
|
Wallpapers / Backgrounds
from SkyTribe.
Right click the background of your choice and save
to your pc. Then right click your desktop, choose properties, desktop,
then browse/locate your new background. |
|
|
|
|
|
|
|
CENTRIFUGAL CLUTCH -
SET UP |
A centrifugal clutch allows the engine
to run whilst the propeller remains still. This obviously has many benefits
such as minimizing the probability of lines entering the spinning prop
whilst inflating the glider. It also prevents damage to the leading
edge of the prop when standing the spinning prop on beach sand or similar
lose material. This unique system may be easily made from the inner
workings from a comparable machine. These clutch systems are found on
motorised scooters and numerous road working machinery such as whackers
or compactors. Simply remove the inner component (A), make an outer
housing to house it (B), and a shaft(C) if not present. Often the small
pulley may be manufactured as part of the outer housing (D) . This system
may be adapted to convert your SOLO or HIRTH 210cc engine into one with
a centrifugal clutch |
|
How does a centrifugal clutch system
work??? How does a centrifugal clutch system work? The entire shaft
and inner clutch system is attached to the spinning crank. The small
pulley and hence the outer casing is thus stationary as the break pads
are detached or not making contact with the outer casing.As
soon as the RPM increases, the spinning motion of the centrifugal and
centripetal forces create a net resultant vector that throws the spring
loaded internal clutch system outwards and against the outer
casing. The more the RPM increases, the more the system is forced against
the casing which now causes the outer casing and hence the small pulley
to rotate. Because this is attached via a belt to the big pulley, the
prop begins to spin (only now when the RPM increases and not continuously
as before). |
|
Spring loaded clutch moves outwards against the outer
housing. This clutch system may be attached to various parts of the
engine set up. The easiest is to have it directly onto the crank,
however it may be adapted to engage the large pulley as the RPM increases
too. The only drawback with this type of set up is that this method
works off the crank. This means there is usually very little room
for the ring gear and hence an electric start may be difficult to
fit. It also requires that the cam shaft may have to be extended to
have the large pulley sitting further out, as the small pulley usually
sits slightly outwards, due to the space taken up by the clutch on
the crank. A system that works easier and that may be universally
fitted to most set ups is that, that works off the large pulley.
It will however require that the prop sits slightly further outwards.
This however is usually not a problem. (The drawings may be obtained
from SKYTRIBE which detail how this is manufactured). |
More available in our PPG book. Click
here
To D.I.Y. Plans |
|
"Free Sticker"
Send self-addressed and stamped envelope to:
P.O.Box 925
Kloof
3640
South Africa
|
656KB
|
|
Download for printing
Back to Plans |
Download for printing
For Component Plans and Assembly Instructions
Back to Plans
|
Prop balancing. |
This our our second example of how to balance
your propeller and a far more sensitive method
than a adjustable insert. |
|
|
|
|
773KB
|
|
|
|
|
|
Home built pipe bender By David
Singery |
I decided to make this pipe bender after I had tried for about four
weeks to borrow a 19mm and a 15.88mm pipe bender with no avail. After
trawling through many used tool shops I found a 19mm bender, but the
store owner wanted more money for it than I could buy a new one for!
I built this one by looking at some of the other sizes that were around
at the time and just made it suit my needs. |
|
The plan was to have two to have a large stationery pulley that would
be orbited by a smaller pulley that was free to roll around the larger
pulley. For the large pulley, I used a diameter of 200mm. I had tried
to use a smaller diameter but found the bend radius to be too tight
and the pipe was prone to kinking. (Remember that the smaller the
inner pulley, the smaller the radius of the bend will be.) Once I
used the larger diameter, the bend turned out just fine. I used machine
grade aluminium for the smaller pulley and quite a poor grade for
the larger pulley. That is why the smaller pulley has a better finish
than the larger one. I just used some off cuts I found in a scrapyard.
Aluminium is also easier to turn than steel and quite a bit lighter
since the whole assembly is rather heavy anyway. Two grooves were
machined into the aluminium, one to accommodate the 15,8mm pipe and
the other to accommodate the 19mm pipe as these were the two sizes
that I intended using. The grooves were machined so that when the
pipe was placed in the groove, the groove would reach up to or just
over half the pipe diameter. This is quite important because as you
bend the pipe, the idea is to force the pipe into the bend and to
follow the curve as you pull on the lever and not allow it to creep
out the sides of the groove. |
|
The smaller pulley was also machined in a similar fashion but I machined
recesses for bearings on either side to allow it to rotate freely
around the larger pulley. The size of this smaller pulley is not critical
as it is merely planetary and orbits the larger pulley. It could even
be half the size I used. It just so happened that this was the diameter
of the aluminium round bar that I had found lying around in a scrapyard.
I have seen some pipe benders that don't have a pulley but rather
a block that is pulled or dragged over the pipe as it moves around
the large pulley. I wanted less friction so as to make pulling the
lever as easy as possible. |
|
Smaller pulley without
bearing recesses machined yet. |
|
Next was to make what I call the block. This is the hub of the entire
puller and allows the large pulley to be fastened to it and allow
it to be clamped in a vice. It also has a clamping device so as to
hold the pipe steady so that it can be bent. The way bending works
is that as the smaller pulley moves around the outside of the larger
pulley pulling on the clamped pipe as well as bends it. In order for
the pipe to be pulled, it needs to be clamped firmly otherwise kinks
will form (trust me, I found this out from experience when I tried
to cut corners in my eagerness to finish the project.) |
|
The explanation of the clamp is as follows: A is the removable clamp
that is held down by the bolt (B) so as to clamp the pipe. The clamp
has two radii, one 15,88mm and the other 19mm in order to clamp around
the pipe. |
|
Block showing clamp
in foreground |
|
These radii were created using a round file so don't go working to
fine tolerances its just to hold the pipe in place. Two holes
were drilled and tapped through the top so the bolt could be moved
to either hole depending on which size of pipe you were bending. The
image shows both pipes (D 15,8mm and E 19mm) clamped together. Two
smaller holes were drilled and tapped on either side to stop the assembly
from being pulled through the block whilst bending.
I will explain the workings at length so those of you who understand
how it works by looking at the picture, please bear with me so I can
describe it to those who don't. The way it works is as follows : Depending
on which size of pipe I would be bending, I would move the bolt to
be tightened over that pipe. If I was going to bend the 19mm pipe,
I would move the bolt to the hole above that pipe where X is so as
to clamp directly above that pipe (see the last image to get a better
view of this second hole). For simplicity sake and for ease of explanation,
I am going to follow the image layout. Pretend that pipe E (19mm)
is not there and we are going to work with D (15,88mm). Bolt B is
screwed out so as to allow the pipe (D) to be placed under the clamp.
The side bolts (C) are screwed in so as to act as a stop to prevent
the clamp (A) pulling out whilst bending. The clamp (A) is then pushed
down onto the pipe using the corresponding radius (15,88mm in this
case) and the bolt (B) tightened so that it is pulled tight against
the stop (F). Take care not to tighten this too much as you will crush
the pipe. Bending can now take place by applying force to the arm. |
|
The pipe being bent.
Note the second hole drilled and tapped for use with the 19mm
pipe |
|
|
My completed frame.
The only part not bent with my pipe bender was the large ring
that goes around the propeller. That was bent with an all together
different type of pipe bender which I will get around to documenting
at some point. All other bends were with this home built bender.
|
|
By David Singery Back to Top |
So you think you're smart? Try
this quiz!!! |
1. How long did the 100 year war last?
2. What country makes panama hats?
3. From what animal do we get cat gut?
4. In what month do the Russians celebrate the October revolution?
5. What is a camels hair brush made of?
6. The Canary islands in the pacific is named after which animal?
7. What was king George VI's first name?
8. What colour is a purple finch?
9. Where are Chinese goosberries from? |
Answers
|
1. How long did the 100 year war last? - 116
yrs
2. What country makes panama hats? - Ecuador
3. From what animal do we get cat gut? - Sheep and horses
4. In what month do the Russians celebrate the October revolution? - November
5. What is a camels hair brush made of? - Squirrel fur
6. The Canary islands in the pacific is named after which animal? - Dogs
7. What was king George VI's first name? - Albert
8. What colour is a purple finch? - Crimson
9. Where are Chinese goosberries from? - New Zealand |
|
How to make your own flywheel puller. |
|
Download your free instructions here:
(.676KB .pdf)
To D.I.Y. Plans |
Stripped or damaged oversized head & barrel
bolt or cap screws? |
|
|
HELPFUL HINTS FOR YOUR POWERED
PARAGLIDER |
from the e book
"An Insight into Powered Paragliding"
from SkyTribe
Get your copy of the book now!!!!!
To order your copy of
An Insight into Powered Paragliding,
go here
|
Click on the link above for
your free copy.
The files are large so please be patient
while they open.
To print the hints, right click
the image and select print
To return to this menu use
the browsers BACK button
More Hints and Tips under
Answered Questions |
Subheadings
from the appendix of the PPG book |
|
|
|
|
|
|
|
|
|
Kill Switch
Page 2 (103KB) |
|
|
|
|
|
|
|
|
|
|
|
Extract from the PPG book by Dave |
|
SO YOUR ENGINE IS HARD TO START??
Many ppg engines have a deco valve fitted into the head. If not you can usually machine an area and fit one or make up something that serves the same purpose. See the attached photo of an ingenious lever system that allows you to depress the dec valve without getting out the harness.
Other engines have a bleed hold half way down the barrel that joint another longitudinal hole that runs down to the exhaust outlet. To prevent this being open to the head a grub screw is in place just above where the bleed hole joins this vertical hole. (see the attached picture).
Sometimes this bleed hole becomes blocked with carbon so start by unblocking it (obviously you will have to take the head off). We normally re drill this to a few mms larger, remove the grub screw and drill this down to the exhaust port larger two and insert a larger grub screw as well.
Some people have ground a small slot in the actual barrel instead of simply drilling it larger. We DO NOT recommend this in the slightest. |
|
|
Decompression Valve |
The automatic or manual decompression lever.
No more having to go round and press your deco
button everytime you pull start it. Made by DAVE Syngery. |
|
|
|
|
|
|
|
|
Featured
Product |
It's not just about Madness
Dave Briggs, a legend among enthusiasts of extreme events in South Africa. It's not just about madness is a rollicking account of various exploits, sometimes hilarious, sometimes hair-raising, told in episodic, campfire-tales style, to bring- as he puts it- some fun into our lives, while it also asks and answers, the question "Why?" So fasten your seat belt and enjoy the raw energy of a sometimes bumpy ride with a pilot who is equally ready to face the challenge of the mighty Colorado River as to express his own frank views on the world he sees around him.
|
|
An Insight into Powered Paragliding.
by David Briggs
Now available on disc and printable from most home PCs. With every purchase of this book you receive a free SkyTribe video.
|
Featured
Product |
Assemble your own Full Face Helmet.
(DVD)
Customized helmets for BMX, motor bikes, paragliding and hang gliding among many more uses. A step by step guide on how to assemble your own helmet designed for you. All templates available as printouts. We include a complete full colour guide to making your own syphon shaker with each purchase.
|
Featured
Product |
It's not just about Madness CD
Dave Briggs, a legend among enthusiasts of extreme events in South Africa. It's not just about madness is a rollicking account of various exploits, sometimes hilarious, sometimes hair-raising, told in episodic, campfire-tales style, to bring- as he puts it- some fun into our lives, while it also asks and answers, the question "Why?" So fasten your seat belt and enjoy the raw energy of a sometimes bumpy ride with a pilot who is equally ready to face the challenge of the mighty Colorado River as to express his own frank views on the world he sees around him.
|
Featured
Product |
Build your own Cost Effective Compressor
A CD of step by step photos on how to make your own air brush compressor fror various items found around the home including fridge motors.
|
Featured
Product |
Microlighting
A 20 minute excerpt of Dave Briggs' microlight trip around South Africa.
|
Featured
Product |
Build your own Powered Paraglider.
The largest collection of Powered Paraglider plans for different engines.All plans and photos available. Includes: a free video, transport rack PPG plans, free copy of the e-book "An Insight into Powered Paragliding ans full colour Assembly Hints. Build it from a cart or motor bike engine at home. Fits in the boot of a car. Make your own portable aircraft. All on 1 CD and printable on most home PCs..
|
Featured
Product |
SkyTribe DVD
An amazing introduction to Powered Paragliding. Includes: What happens when you are hit by a wave at sea when flying your paraglider. Showing take-offs, landings, tandem flights and much more
|
Featured
Product |
Make your own Syphon Shaker.
D.I.Y. Plans to manufacture your own Syphon Shaker.
A new revolution in petrol / liquid syphoning
No more spillage or funnels
no more mouths full of petrol,
no more spontaneous combustion.
|
Featured
Product |
It's not just about Madness
Dave Briggs, a legend among enthusiasts of extreme events in South Africa. It's not just about madness is a rollicking account of various exploits, sometimes hilarious, sometimes hair-raising, told in episodic, campfire-tales style, to bring- as he puts it- some fun into our lives, while it also asks and answers, the question "Why?" So fasten your seat belt and enjoy the raw energy of a sometimes bumpy ride with a pilot who is equally ready to face the challenge of the mighty Colorado River as to express his own frank views on the world he sees around him.
|
|
An Insight into Powered Paragliding.
by David Briggs
Now available on disc and printable from most home PCs. With every purchase of this book you receive a free SkyTribe video.
|
Featured
Product |
Assemble your own Full Face Helmet.
(DVD)
Customized helmets for BMX, motor bikes, paragliding and hang gliding among many more uses. A step by step guide on how to assemble your own helmet designed for you. All templates available as printouts. We include a complete full colour guide to making your own syphon shaker with each purchase.
|
Featured
Product |
It's not just about Madness CD
Dave Briggs, a legend among enthusiasts of extreme events in South Africa. It's not just about madness is a rollicking account of various exploits, sometimes hilarious, sometimes hair-raising, told in episodic, campfire-tales style, to bring- as he puts it- some fun into our lives, while it also asks and answers, the question "Why?" So fasten your seat belt and enjoy the raw energy of a sometimes bumpy ride with a pilot who is equally ready to face the challenge of the mighty Colorado River as to express his own frank views on the world he sees around him.
|
Featured
Product |
Build your own Cost Effective Compressor
A CD of step by step photos on how to make your own air brush compressor fror various items found around the home including fridge motors.
|
Featured
Product |
Microlighting
A 20 minute excerpt of Dave Briggs' microlight trip around South Africa.
|
Featured
Product |
Build your own Powered Paraglider.
The largest collection of Powered Paraglider plans for different engines.All plans and photos available. Includes: a free video, transport rack PPG plans, free copy of the e-book "An Insight into Powered Paragliding ans full colour Assembly Hints. Build it from a cart or motor bike engine at home. Fits in the boot of a car. Make your own portable aircraft. All on 1 CD and printable on most home PCs..
|
Featured
Product |
SkyTribe DVD
An amazing introduction to Powered Paragliding. Includes: What happens when you are hit by a wave at sea when flying your paraglider. Showing take-offs, landings, tandem flights and much more
|
Featured
Product |
Make your own Syphon Shaker.
D.I.Y. Plans to manufacture your own Syphon Shaker.
A new revolution in petrol / liquid syphoning
No more spillage or funnels
no more mouths full of petrol,
no more spontaneous combustion.
|
Featured
Product |
It's not just about Madness
Dave Briggs, a legend among enthusiasts of extreme events in South Africa. It's not just about madness is a rollicking account of various exploits, sometimes hilarious, sometimes hair-raising, told in episodic, campfire-tales style, to bring- as he puts it- some fun into our lives, while it also asks and answers, the question "Why?" So fasten your seat belt and enjoy the raw energy of a sometimes bumpy ride with a pilot who is equally ready to face the challenge of the mighty Colorado River as to express his own frank views on the world he sees around him.
|
|