page 1
page 2
page 3
page 4
page 5
page 6
page 7
page 8
page 9
page 10
page 11
page 12
page 13
page 14
page 15
page 16
page 17
page 18
page 19
page 20
page 21
page 22
page 23
page 24
page 25
page 26
page 27
page 28 page 29
page 30
page 31
page 32
page 33
page 34
page 35
page 36
page 37
page 38
page 39
page 40
page 41
page 42
page 43
page 44
page 45
page 46
page 47
page 48
page 49
page 50
page 51
< prev - next > Energy Wind power wind_turbine_pmg_manual (Printable PDF)
Cut out pieces of fibreglass CSM, using the templates. There will be 2 circular disks
for laying flat in the outer mould. You also need enough curved strip pieces to cover
the inside wall of the outer mould in a double thickness of CSM. Overlap 25mm
between pieces.
When you are sure that you have everything to hand, start the resin casting process.
It is a good idea to read through the procedure first, and check that you understand it
all before you start. There are notes on polyester resins in section 8.
The stator casting procedure
Diagram 30 shows the procedure for weighing out the resin and the talcum powder.
The talcum powder is only used for bulk mixes (not thin layers with CSM), to
prevent overheating, and to thicken the mix. Different mixes use different weights -
follow the step by step instructions below. Diagram 31 shows all the parts coming
Mix resin with catalyst thoroughly but slowly to avoid churning in air bubbles. Add
any talcum powder only after the catalyst is mixed. When the resin is mixed, use it
at once. After a few minutes in the mixing bucket, it will heat up, and begin to set.
Use exactly the right amount of catalyst. Resin casting needs less catalyst than
normal fibreglass work (about half the time). When the workshop is hot, put in less
catalyst. Casting thick layers of resin, put in less catalyst. If in doubt, make some
trial mixes of resin, to find out the correct amount of catalyst.
If there is no PVA 'release agent', then take care not to wipe the polish off the mould
with brush strokes. Apply the resin with a 'prodding' action.
PMG manual
page 28
June 2001