Tuesday, 11 February 2025

Helmet: Agv S4 Sv info and Stealth SV

 Agv Stealth Sv same as S4 Sv but with a diffrent rear. Stealth might also have Double D rings (not sure).

Agv S4 Sv Uses GT2 visor system.


Det gör även AGV K3 SV så deras visir bör passa. 


Carbon and fibre glass

Mid premium.

Väldigt bra säkerhet. Good security, there are videos of people hitting the helmet with a hammar and also an axe.



AGV Skyline i USA, efterföljare till S4 Sv, lite förändringar.

Mechanism XQRS (Extra Quick Release System)


Technical detail:


Shell: Carbonglass-fiber glass carbon

N. of shells 2 shell sizes

Ventilation System IVS (Integrated Ventilation System) with wide channels hollowed directly in the shell, dynamic air intakes and rear extractors

Fabrics Dry-Lex with hygienic treatment.

Inside padding Fully removable and washable.

GT2 visor clear optical class 1 polycarbonate scratch and fog with 100% protection from UV holder.

Inner Sun Visor ISV.

Mechanism XQRS (Extra Quick Release System): shield replacement without tools in few seconds.

Customizing opening mechanism.

Retention system: buckle with micrometric regulation.Anti-theft ring on the strap

Improvements:

New interior with improved 3D construction and comfort

Interior in revised form for better protection from noise

New fabrics skin-friendly that improve the feeling of fit and reduce the feeling of friction when you put or removes his helmet

New facing wider for greater insulation from drafts and noises coming from below

New visor edge for better sealing and insulation from drafts and noise

Removal of holes and side grids to reduce turbulence and improve l 'aerodynamics

Here are some pictures of AGV S-4 sv, or S4SV.







AGV has updated both the Stealth and the S-4 helmets with new SV versions for 2010

Ready for the AGVoice Bluetooth communication system

S4 Sv is sister helmet with stealth sv, gjordes fram till ca 2012

Pris 2010: Considering the €299 requested for the decorative version (€269 in plain), this helmet still needs to be improved to be used peacefully on motorcycles dedicated to fast touring.

Both the Stealth and S-4 SV shells are a carbon-fibre/fibreglass mix.

Like the T-2 and the GP Tech racing lids, the ventilation system is an integrated version through the EPS liner, as developed by Valentino Rossi.

 They have replaced the S4-SV and Stealth-SV with the Skyline and Horizon models respectively (2012). Då togs ventilationshålen vid örat bort.

Skyline har Ventilation system with three front air vents.

Skyline does not have any rear exhaust vents or side vents, which the S4 SV and Stealth has.

Skyline has a “micro-lock” chin strap while the Horizon gets a double D-ring retainer.


Carbon Glass shell in 2 sizes

Integrated ventilation system, large vents and wide channels throut the shell for maximum airflow

GT2 visor system, anti scratch, anti fog and 100% UV protection.


Compatible with K5, K5 S, K3 SV and K1 large sizes (ML-L-XL-XXL), and for any size of STEALTH SV and S-4 SV.

It fits GT2 Horizon GT2 S4-SV GT2 Skyline GT2 Stealth-SV helmet


---------------- Visors / Vseras Casco AGV  ------------

AGV, compatible con K1 | K5 | K5-S | K3-SV | S4-SV | COMPACT | DUCATI-V2 | HORIZON | NUMO | NUMO EVO | STEALTH-SV | STRADA | SKYLINE


Fully removable washable Dri-Lex lining with sanitized antibacterial hygien treatment.

Removable chin curtain

Reflective panels on neckroll (left and right)

PVM Personalized visor mechanism (interchangeable visor ratchet mechanism)

RED: Standard is 5 position visor mechanism.

GREEN (city): 7 position

BLUE (Sports riding): Just open and closed position.


Very comfortable, very light, very feature rich. Really good helmet for riding in hot weather or touring.



Regarding visors there seems to be conflicting compatibility tables...


Below is Skyline and Stealth-SV compatible with for example K3-SV.



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Two shell sizes and XS – XXL fitment sizes, with four different EPS (shock absorbing expanded polystyrene) liners. 

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The AGV Skyline helmet is the direct replacement for the massively popular AGV S4 SV. The shell is Constructed from Fibreglass and Carbon, providing an impact resistant and lightweight shell. This Skyline range of helmets from AGV must be one of the most pleasing to the eye, with its aggressive stance courtesy of the deep chin-bar and top vents making it instantly stand out from the crowd. A major difference the AGV Skyline has over some of the other sports orientated competitors is the integrated drop down sun visor - meaning you'll never be caught out with the wrong visor again.


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AGV Sport Modular Carbon fibre helmets are made in China. By Boeing. They have a facility in China that makes cf parts for their aircraft and AGV couldn’t find a better solution that wouldn’t make the price too high.



--------------- This is the older AGV S4 - it's not the same   -------------

There are no air channels on top. And no indents for the ventilation outlets behind the ears. The shell is more round. The visor mechanism is also different.




Wednesday, 22 January 2025

Hyosung Sense 2001 and cylinder hunt

Cylinder and Exhaust part for 50cc Hyosung 

Some information regarding parts for Hyosung SD50. Avanti or Sense.

This one I bought in Surahammar, it has low cylinder compression. 60 PSI.

Therefore I'm looking for a new cylinder jug. Finding parts here in Sweden are hard.. Unless I go for a Morini but then my exhaust doesnt fit anymore. Plus might be hard getting a new flat flange Morini exhaust to fit..



Hyosung Sense 2001 cylinder with "old style" flange. Hard to find in my country.

Morini / TGB cylinder with flat flange, needs another type of exhause? Original wont fit.

Morini 50 AC 2T is called D1E41QMB



Old style from another view (SD50), the Prisma SF50 I think uses a flat flange:

Head for a Hyosung SD50 2006:

This is a fitting exhaust for the cylinder. Technigas Silent Pro is available for both types of cylinder flanges.

Tecnigas Silent Pro 0307182 – hyosung SF 50

https://www.amazon.se/Tecnigas-Silent-Pro-0307182-hyosung/dp/B07F8JSHG7





------------- Flange-type for Hyosung Prisma 50cc etc , Morini / TGB cylinders ---------

Tecnigas Silent Pro 0307182 – hyosung SF 50

https://www.amazon.se/Tecnigas-Silent-Pro-0307182-hyosung/dp/B07F8JSHG7





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Maybe a Hyosung Prisma SF50 exhaust could be fitted to the Morini style flat flange. In that case you already have an alternative:


Hyosung Sf50 Tecnigas Next cost 1509 kr @ mopeddelar, but sold out for now.



Fits

- Hyosung Prima

- Hyosung Rally 50

- Hyosung SF 50 Super Fast

- Hyosung Super Cab> '08

https://www.mopeddelar.se/p/50cc/hyosung-scooter/avgassystem-21670/avgassystem-hyosung-sf50-tecnigas-next.html