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Figure 1. BHL5-16 "Limetti"


BHL5-16 SA is the BHL5 single skin prototype made by Tim Weber in Sauerland, Germany. Completed in April-May 2022, currently in testing and adjustment phase.  

"Here are a few more information about my proto from the BHL5.
I used Skytex 27/g m2 for the cells and triple kite ripstop 51g/m2 for the ribs.
The Lines are Liros DC (Dyneema coated) 60 for the upper gallery 160 middle gallery  200 for the main lines.
2,4 mm nylon rods from the garden strore for weedeater
10mm wide belts for the line attachment points .
The line attachment points are reinforced with self adhesive cordura 170g/m2.
The yarn is Serafil S80 and i used almost 1500m of it
My versoin of the proto has the name  - LIMETTI -
Without lines it weights 1605 g and with the lines 1850g
 The trailing edge is reinforced with 65g/m2  25mm wide ripsop and the leading edge is reinforced with 1mm aramide chord."


Important Laboratori note:

Tim's prototype has been built according to the plans BHL5 version 20201208 usin a calage of 30%.

I'm favorably suprised because Tim's paraglider uses a standard 30% pilot position ("calage" = 30%). This means fast flight position as planned in project. At the same time it has a reasonable glide, it is a good sign.
Interestingly, Eric Fontaine with exactly the same BHL5 16 m2 paraglider, is also happy using a calage of 42%. That’s why I’m not sure now what would be the optimal fit for BHL5, whether 30% or 42%. Experiments will continue... Remember that single skin paragliders are very sensitive to adjustments to the length of the brake line. And depending on the style and conditions of the flight area, adjustments with faster or slower calages may be needed.

Overall, I am very happy with the BHL4 / BHL5 models although they require a good fit (calage and main brake line length) to get the best results.

There are two options for changing calage from 30% to 42% (BHL5-16):

1) changing the whole set of lines (not absolutely necessary if they are new)

2) making new risers specifically tailored. To change from 30% to 42% you need to extend riser A in 5.9 cm extend riser B 4.1 cm, extend riser C 2.4 cm, riser D unchanged.


Construction and first flights

Soon more photos.

Many thanks to Tim Weber for sharing the details of his project.

LAB NOTE: Build a paraglider at home is a very complicated task (even simple skin), and requires many hours of work. Previous experience is required, and very inventive. As always remember that: The free flight implies risks that can only be known and they can be controled with a suitable formation on the part of a recognized school. Not test wings without knowing their functioning. The construction and test of experimental wings without certifying requires deep knowledge of what is being made.