Zaštitni kavez - Roll-cage ?? [Archive] - DRiFT u hrvatskoj, DRiFTeri u hrvatskoj, drift slike...

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chaos

18-05-2007, 14:31

Zaštitni kavez - Roll-cage ??

Vidio sam da ih ima raznih konstrukcija ...da su neki povezani u cjelinu varenjem, a neki sa vijcima ...da su na karoseriju učvrščeni na razna mjesta (točke) ...itd.

Zanima me:
# Kakva je razlika u čvrstoči (otpor na udarce) između onih zavarenih i onih povezanih vijcima?
# Koja su to mjesta (točke) na koje se pričvrščuje i koliko tih točaka treba biti?
# Materijal od kojeg se uobičajeno prave, te preporučene dimenzije?
# ...i sve ostalo što uz izradu toga ide, savjeti, iskustva, itd.

zmajchek

19-05-2007, 10:45

gledajući po zakonu kavez nesmije biti varen nego pričvršćen vijcima (šerafi ako misliš ići na atast).

najbolje bi bilo krajeve kaveza kroz sasiju za most zavarit, i na još par mjesta u autu, (visina ramena kod A nosaća, kod B stupa na pod i visana ramena) dok variš kavez prvo zavariš ploćevinu od 3 milimetara na karoseriju zatim na nju cjev. i tamo di variš probaj varit s TAG varenjem to je definitivno najjaći spoj. ima na bmw. forumu mali panj je u 36 radio i super mu je napravljeno i ima čak atest za njega...

dok nađem dam ti link

a ebljina cjevi neznam koja je nisam tolki strućnjak...

zmajchek

19-05-2007, 11:02

evo link sa slika ma pogledaj..

http://www.bmwclub.com.hr/vbulletin/showthread.php?t=2623&page=4

chaos

19-05-2007, 15:51

i tamo di variš probaj varit s TAG varenjem to je definitivno najjaći spoj.

Moram te malo ispraviti kod ovoga, ali trenutno (i svakom dostupno, npr. "3M") najjači spoj se postiže lijepljenjem a ne varenjem.

evo ]http://www.bmwclub.com.hr/vbulletin/showthread.php?t=2623&page=4[/url]

Hvala za link! ;)
Je da moraš biti registriran da bi vido >:(, ali... ;D

zmajchek

21-05-2007, 08:11

chaos

21-05-2007, 15:32

Samo ti stavi slike, od viška glava ne boli.

A ja ću ispisati ono što sam iskopa.

chaos

21-05-2007, 16:08

Formula Drift - Technical

1.1 DRIVER SAFETY EQUIPMENT

Each driver must wear the following equipment in all on-track sessions:

1.1.2: A safety helmet shall be worn by all drivers. Helmets certified to the following standards are permitted;
Snell Memorial Foundation – SA95, SA2000
SFI Foundation – Spec 31.2, Spec 31.2A
British Helmet Standard – BS 6658:1958

1.1.3: Accident-damaged helmets shall be given, or sent, by the driver, or his representative, to SCCA Pro Racing, LLC, P.O. Box 19400, Topeka, KS 66619-0400. It will be forwarded to the certifying organization. Details of the accident should be included.

1.1.4: Drivers must wear a helmet during all on-track sessions.

1.1.5: Hair protruding from beneath a driver’s helmet must be completely covered by fireresistant material. Drivers with facial hair must wear face shields of fire-resistant material (i.e. balaclava or helmet skirt).

1.1.6: Only one-piece driving suits made of fire-resistant material and certified to SFI spec 3/2A-1, or homologated by the FIA, which effectively covers the body, including neck, ankles and wrists, will be accepted. Multi-layer driving suits are recommended.

1.1.7: Fire-resistant underwear is required with single and double layer suits, but is not required with three, or more, layer driving suits unless the suit manufacturer so specifies.

1.1.8: Socks must be made of fire-resistant material, and shoes and gloves must be made of leather, or any approved fire-resistant material containing no holes, except those made by the manufacturer of the equipment.

1.1.9: Driver restraint system see Appendix J.

1.1.10: Any corrective eye glass material used shall be of safety glass-type, and meet U.S. Government standards.

Appendix J

J.2: All drivers in SCCA Pro events must utilize either a five-point, or six-point, restraint harness meeting the following specifications at all times during practice, qualifying, and the race.

J.3: A five-point system is required for use in automobiles where the driver is seated in an upright position, and consists of a three-inch seat belt, three-inch shoulder straps, or two-inch shoulder straps with three-inch wide professional padding, and a two-inch anti-submarine strap. The single anti-submarine strap shall be attached to the floor structure of the car similar to the shoulder harness mounting and have a metal-to-metal connection with the single release common to the seat belt and shoulder harness. A six-point system may also be used, and is recommended.

J.4: A six-point system is required for use in automobiles where the driver is seated in a semi-reclining position and consists of either a three-inch seat belt, three-inch shoulder straps, or two-inch shoulder straps with three-inch wide professional padding, and two, approximately two-inch, leg straps. The double leg straps of the six-point system may be attached to the floor, or be attached to the seat belt so that the driver sits on them, passing them up between his legs and attaching them either to the single release common to the seat belt and shoulder harness, or attaching them to the shoulder harness straps. It is also permissible for the leg straps to be secured at a point common to the seat belt attachment to the structure, passing under the driver and up between his legs to the seat belt release, or shoulder harness straps.

J.5: The material of all straps shall be nylon, or Dacron polyester, and in new or perfect condition. The buckles must be of metal-to-metal quick-release type, except in the case of leg straps of the six-point system, where they attach to the seat belt, or shoulder harness straps.

J.6: The shoulder harness shall be the over-the-shoulder type. There must be a single release common to the seat belt and shoulder harness. Only separate shoulder straps are permitted. (Y-type shoulder straps are not allowed.) “H”-type configuration is allowed.

J.7: In cases where the driver is in a semi-reclining position, the shoulder harness shall be attached so that the angle between a line drawn through the driver’s spine and the shoulder harness is 70-degrees or greater.

J.8: All straps must be free to run through intermediate loops, or clamps/buckles. If 3-bar adjusters are used, they shall be placed as close to the mounting points as possible. Straps utilizing a hook with a spring-loaded clip, which attaches to an eyebolt, must use a cotter pin, or safety wire, through the small hole that prevents the clip from opening.

J.9: Drivers of open cockpit cars must use arm restraints.

J.10: The minimum acceptable bolts used in the mounting of all belts end harnesses are SAE Grade 5. Where possible, seat belt, shoulder harness, and anti-submarine strap(s) should be mounted to the roll structure, or frame of the car. Where this is not possible, large diameter mounting washers or equivalent should be used to spread the load. Bolting through aluminum floor panels, etc., is not acceptable.

J.11: SFI Certification - Harness systems may be certified to SFI spec 16.1, and shall bearthe appropriate label(s). This certification shall expire on December 31st of the 2nd year, after the year of manufacture. The harness system may be sent to the manufacturer for re-webbing and recertification.

FIA Certification - Harness systems may be homologated by the FIA to specification 8853/98, and shall bear the appropriate label(s). It is recommended that the harness system be replaced every three (3) years, but the mandatory replacement date is the 5th year after production. The expiration date, instead of the date of manufacture, is printed on the FIA label(s).

J.12: Regardless of the date of manufacture, the safety harness shall be replaced if the webbing is cut/frayed, if any of the buckles are bent/cracked, or if the car has been in a severe impact. If any of these conditions exist, the TECHNICAL ADMINISTRATOR shall cut the certification labels off of the harness. The team will then have to return the harness to the manufacturer for recertification.

J.13: The shoulder harness shall be mounted as closely behind the seat back as possible, not to exceed twelve-inches (12”). The shoulder harness shall be above a line drawn downward from the shoulder point at an angle of 20-degrees with the horizontal. The shoulder straps shall pass through the seat, without interference, to the attachment points.

J.14: The lap belts shall be mounted rearward of the pelvis, between two lines drawn at 45-degrees, and 65-degrees, below the horizontal. The lap belts shall pass through the seat, without interference, to the attachment points.

J.15: Two anti-submarine straps/leg straps as are found in a 6-point harness system, are highly recommended. If used, they shall be mounted behind the point where they wrap around the driver’s legs, and shall pass through the seat, without interference, to the attachment points. If a single anti-submarine strap is used, it shall be mounted approximately 20-degrees behind the vertical point where it passes through the seat, and shall pass through the seat, without interference, to the attachment points.

chaos

21-05-2007, 16:13

Formula Drift - Technical

Attach Drawing

For 2004 SCCA Pro Racing Sanctioned Drifting events a Roll Bars will be accepted Roll Cages will be required for 2005 SCCA Pro Racing sanctioned Drifting events.

2.1 ROLL BARS
Roll Bars are required for all SCCA Sanctioned Professional Drifting events, these specifications apply to all vehicles unless specified differently in series specific rules.

The basic purpose of the roll bar is to protect the driver. It must be designed to withstand compression forces from the weight of the car coming down on the roll bar structure and to take fore/aft, and lateral, loads resulting from the car skidding along on its roll bar structure.

A. The Top of the roll bar must be a minimum of 2 inches over the drivers helmet when the driver is sitting in a normal driving position (as near the roof as possible in closed sedans) and shall not be more than six inches.

B. The two vertical members forming the sides of the hoop must extend the full width of the cockpit to provide maximum bearing area.

C. A system of head restraint to prevent whiplash and prevent the driver’s head from striking the underside of the main hoop is required. The head restraint must be padded with a non-resilient material and must be capable of withstanding a force of 200 lbs. in a rearward direction. Closed cars with full cockpit-width main hoops must have two (2) braces extending to the rear, and attaching to the frame, or chassis. Braces must be attached as near as possible to the top of the main hoop (not more than 6” below the top), and at an included angle of at least 30-degrees. Main hoop rear bracing shall not extend rearward past the shock towers and must be of the same dimensions as least equal to that of the main hoop. One diagonal from the top of the main hoop not more than 24” from the drivers side vertical down to the passengers side vertical. A Horizontal bar between the main hoop and diagonal no higher than shoulder high is required for shoulder harness mounting,

Vehicle Material
Weight Mild Steel Alloy Steel
Up to 1500 Ibs. 1.375x.095 1.375x.080
1501 to 2499 Ibs. 1.500x.095 1.500x.095
2500 lbs. & Up 1.750x.095 1.750x.095

chaos

21-05-2007, 16:18

Formula Drift - Technical

2.2 ROLL CAGES

These general specifications are for all automobiles. Roll cages will be required in all automobiles in 2005.

2.2.1 BASIC DESIGN CONSIDERATIONS

1. The basic purpose of the roll cage is to protect the driver if the car turns over, runs into an obstacle such as a guardrail or catch fence, or is struck by another car. It shall be designed to withstand compression forces from the weight of the car coming down on the rollover structure and to take fore/aft and lateral loads resulting from the car skidding along on its rollover structure.

2. A system of head restraint to prevent whiplash and rebound and also to prevent the driver’s head from striking the underside of the main hoop shall be installed on all vehicles. Racing seats with integral headrests shall also meet this requirement and have a support to the main hoop. Seats homologated to, and mounted in accordance with FIA standard 8855-1999 or higher need not have the seat back attached to the roll structure. The head restraint on non-integral seats shall have a minimum area of thirty-six (36) square inches and be padded with a non-resilient material such as Ethafoam® Ensolite®, or other similar material with a minimum thickness of one (1) inch. Padding meeting SFI spec 45.1 is recommended. The head restraint shall be capable of withstanding a force of two-hundred (200) lbs., in a rearward direction. The head restraint support shall be such that it continues rearward or upward from the top edge in a way that the driver’s helmet can not hook over the pad. The padded surface shall touch the helmet; it shall not be under fiberglass or other hard material.

3. Forward braces and portions of the main hoop subject to contact by the driver’s helmet (as seated normally and restrained by seatbelt/shoulder harness) shall be padded with non-resilient material such as Ethafoam® or Ensolite®, or other similar material with a minimum thickness of one-half (1/2) inch. Padding meeting SFI spec 45.1 is recommended.

Material: Alloy Steel or DOM

Vehicle Material
Weight Mild Steel Alloy Steel
Up to 1500 Ibs. 1.375x.095 1.375x.080
1501 to 2499 Ibs. 1.500x.095 1.500x.095
2500 lbs. & Up 1.750x.095 1.750x.095

Note: ERW tubing is not permitted in any car registered with SCCA after of 01/01/2003.

Main hoop: 4 bends maximum, totaling 180 degrees ± 10 degrees.
Front hoop: 4 bends maximum or Front downtubes: 2 bends maximum.
Rear hoop supports: No bends.

If any of the above bend requirements cannot be met, all components of the roll cage shall be fabricated from the tubing size(s) listed for the next heavier category of automobiles.

D. For purposes of determining tubing sizes, the vehicle weight is as raced without fuel and driver. The minus tolerance for wall thickness should not be less than .010" below the nominal thickness.

E. An inspection hole at least 3/16 inch diameter, but no greater than 1/4 inch diameter shall be drilled in a non-critical area of all tubes with a specified size to facilitate verification of wall thickness.

7. General Construction

A. One (1) continuous length of tubing shall be used for the main hoop member with smooth continuous bends and no evidence of crimping or wall failure. The radius of bends in the roll cage hoop (measured at centerline of tubing) shall not be less than three (3) times the diameter of the tubing. Whenever possible, the roll cage hoop should
start from the floor of the car, and, in the case of tube frame construction, be attached to the chassis tubes by means of gussets or sheet metal webs with support tubes beneath the joints to distribute the loads. It is recommended that gussets be used

B. Welding shall conform to American Welding Society D1.1:2002, Structural Welding Code, Steel Chapter 10, Tubular Structures. Whenever D1.1 refers to “the Engineer” this shall be interpreted to be the owner of the vehicle. Welds shall be continuous around the entire tubular structure.

All welds shall be visually inspected and shall be acceptable if the following conditions are satisfied:
1. The weld shall have no cracks.
2. Thorough fusion shall exist between weld metal and base metal.
3. All craters shall be filled to the cross section of the weld.
4. Undercut shall be no more than 0.01 inch deep.

C. Aluminum bronze or silicon bronze welding technique is permitted, but extreme care shall be used in preparation of parts before bronze welding and in the design of the attaching joints.

chaos

21-05-2007, 16:24

Formula Drift - Technical

18.2. BOLT IN ROLL CAGE

1. Full width roll cages are recommended in all Drifting automobiles. Roll cages installed in Drifting automobiles are for driver safety and shall be contained entirely within the driver/passenger compartment. The carpet/padding may be cut around the mounting base plates.

A. The cage need not be removable. It shall be bolted and/or welded to the car.

B. It shall attach to the car in at least than six (6) points, consisting of the basic cage with six (6) points and two optional braces.

C. The forward part of the cage shall be mounted to the floor of the vehicle. In addition, if the two optional braces referred to in 18.2.1.B are utilized they shall be mounted, one on either side, from the forward section of the cage to the firewall or front fender wells (see GCR Section 18.2., Figure 1). No braces shall pass through the front firewall.

2. Removable roll cages and braces shall be very carefully designed and constructed to be at least as strong as a permanent installation. If one tube fits inside another tube to facilitate removal, the removable portion shall fit tightly and shall bottom by design and at least two (2) bolts shall be used to secure each such joint. The telescope section shall be at least eight [8] inches in length. Minimum bolt diameter is 3/8 inches.

3. For tubing sizes for front and main hoop and all required bracing, see 18.1.6.C.

4. Main Roll Hoop:

A. Main roll hoop (behind the driver) shall extend the full width of the driver/passenger compartment and shall be as near the roof as possible. It shall incorporate a diagonal lateral brace to prevent lateral distortion of the hoop (See Figure 1). Any number of additional reinforcing bars are permitted within the structure of the cage. It is required that the horizontal brace behind the driver’s seat (described in Section 18.2.10) continue from the diagonal to the passenger side main hoop upright or that a second diagonal be installed in the main hoop.

5. Front Roll Hoops:

A. The front or side hoops shall follow the line of the front pillars to the top of the windshield (as close to the roof as possible) then horizontally to the rear attaching to the main hoop. These two side hoops are to be connected together by a tube over the top of the windshield, or

B. A front hoop following the line of the front pillars and connected by horizontal bars to the main hoop on each side at the top may be used, or

C. A top “halo” hoop following the roof line from the main hoop to the windshield with forward down tubes following the line of the front pillars to the floor.

D. The front or side hoops may extend through the dash pad. This includes the forward part of the door panel if it is an extension of the dash panel.

E. One (1) bar is recommended in a horizontal plane between forward cage braces in the dash area.

6. Bracing:

The main roll hoop shall have two braces extending to the rear attaching to the frame or chassis. Braces shall be attached as near as possible to the top of the main hoop not more than six (6) inches below the top and at an included angle of at least thirty (30) degrees. On cars where the rear window/bulkhead prohibits the installation of rear braces (e.g., Honda del Sol), the main hoop shall be attached to the body by plates welded to the cage and bolted to the stock shoulder harness mounting points.

7. Side Protection:

A side tube connecting the front and rear hoops across the driver’s door opening is mandatory and across the passenger’s door opening is allowed (recommended). The telescope section should be at least four (4) inches in length. Minimum bolt diameter 3/8 inches. The driver’s window safety net may be mounted to this side tube and the top cage tube. Driver’s door side tubes may extend into the door. NASCAR-style side protection is permitted. The driver’s door window glass, window operating mechanism, inner door trim panel, armrest, map pockets, and inside door latch/lock operating mechanism may be removed and the inner door structural panel may be modified, but not removed to facilitate this type of side protection. The stock side impact beam and the outside door latch/lock operating mechanism shall not be removed or modified.

8. Mounting Plates:

A. Each mounting plate shall be at least .080 thick if welded and 3/16” thick (with appropriate backing plates) if bolted. There shall be a minimum of three (3) bolts per mounting plate if bolted.

B. Each mounting plate shall not be greater than 100 square inches and shall be no greater than twelve (12) inches or less than two (2) inches on a side.

C. Whenever possible, mounting plates shall extend onto a vertical section of the structure (such as a rocker box).

D. The mounting plate may be multi-angled but must not exceed these dimensions in a flat plane.

E. Any number of tubes may attach to the plate or each other.

9. Hardware: (Bolts)
All hardware shall be Grade 5 or better. 5/16" minimum diameter.

10. In order to provide a secure seat back support a section of tubing equal to the roll bar shall be installed horizontally from the main hoop upright to the diagonal brace. This tube shall be no higher than shoulder height. The driver’s seat shall be firmly mounted to the structure of the car. In cars where the seat is upright, the back of the seat shall be firmly attached to the main roll hoop, or it’s cross bracing.

Seats homologated to and mounted in accordance with FIA standard 8855-1999 or higher need not have the seat back attached to the roll structure. The homologation labels must be visible. Seat supports shall be of the type listed on FIA technical list No.12 (lateral, bottom, etc).

Fig. 18.2.10.A
FIA Standard 8855 -1999
ABC Seats Ltd.
Model: Super Champion 1996
Homologation N° CS.OO1.96
Date of Manufacture: June 1996

Letters must be at least 8mm high
Sample FIA seat homologation label

chaos

21-05-2007, 16:26

Formula Drift - Technical

REMOVABLE ROLL CAGE

Tubing Joints - See Figures 2, 3, and 4
Insert figures from page 141

18.4.4. Mounting Plates:
The thickness of mounting plates bolted to the structure of the car shall not be less than the thickness of the roll hoop or brace that they attach and shall be backed-up with a plate of equal dimensions on the opposite side of the panel, with the plate’s through-bolted together. A minimum of three (3) bolts per mounting plate is required for bolted
mounting plates. All hardware (bolts) shall be Grade 5 or better with 5/16" diameter minimum. Mounting plates welded to the structure of the car shall not be less than .080" thick. Whenever possible the mounting plates should extend onto a vertical section of the structure (such as door pillar).

18.4.5. Driver’s Seat
The driver’s seat shall be firmly mounted to the structure of the car. In cars where the seat is upright, the back of the seat shall be firmly attached to the main roll hoop, or it’s cross bracing. Bulkheads, firewalls, rear decks, or similar structures of suitable strength may be used as a substitute for the main roll hoop or cross bracing to provide the required seat back support.

Seats homologated to and mounted in accordance with FIA standard 8855-1999 or higher need not have the seat back attached to the roll structure. The homologation labels must be visible. Seat supports shall be of the type listed on FIA technical list No.12 (lateral, bottom, etc).

Fig. 18.4.5.A
FIA Standard 8855 -1999
ABC Seats Ltd.
Model: Super Champion 1996
Homologation N° CS.OO1.96
Date of Manufacture: June 1996

Letters must be at least 8mm high
Sample FIA seat homologation label

chaos

21-05-2007, 16:29

Formula Drift - Technical

Figure 6:

RECOMMENDED ROLL CAGE HIGH FRONT HOOP OPEN AND CLOSED, GT

http://i16.tinypic.com/4vmy6o5.gif

chaos

21-05-2007, 16:31

Formula Drift - Technical

Figure 7:

RECOMMENDED ROLL CAGE OPEN-TOP CARS

NOTE: A low front hoop may only be used in open-top cars without a windshield.

http://i1.tinypic.com/6hdv3ww.gif

chaos

21-05-2007, 16:33

Formula Drift - Technical

Figure 8:

REMOVABLE ROLL BAR BRACES - ATTACHMENT DETAILS

http://i10.tinypic.com/520qe00.gif

M.4: ROLL CAGE STRUCTURE MINIMUM TUBING SIZES

FormatX

21-05-2007, 22:12

uuu treba to sve procitati
evo slika kako to izgleda namontirano...ovo je od Jeza sa sxoc-a
http://www.h-dev.co.uk/editable_page_data/article_images/18_1.jpg
http://www.h-dev.co.uk/images/cage.jpg

S13 6-point bolt in roll cage. This cage is used in the H Dev Time Attack S13 - it provides enhanced roll over protection and significantly stiffens up the chassis.

It comes with bolt in door bars.

It is available with fixed or removable rear diagonal.

Click here for some cage pictures

This cage meets the safety requirements for most drifting events, including the European Drift Championship*

*Requires standard drivers door to meet regulations

ovo je link na kojem se moze kupiti kavez...samo meni je to preskupo, 550funti iiiii + carina i eventualno pdv..ajme
http://www.h-dev.co.uk/product_info.php?cPath=41_45_91&products_id=56&osCsid=a76243f050b1a6741d16284048439ff1

uglavnom to mi je svakako u planu

chaos

21-05-2007, 22:56

Stvarno skupo.

Eto sad trenutno razmišljam o punjenju karoserije sa pur-pjenom ::)

FormatX

21-05-2007, 23:42

Stvarno skupo.

Eto sad trenutno razmišljam o punjenju karoserije sa pur-pjenom ::)

zaboravi na purpjenu.
zasto?
jer purpjena kada se stisne nema elasticnost nego se mrvi, (naspricaj jednu hrpu ili ako imas negdje i kad se osusi stisni ju prstom, ona ce se podrobiti i ostati zdrobljena) osim toga purpjena kada se nedajboze zapali ispusta vrlo otrovne plinove....(a to nam najmanje treba ako se nemozemo iskoprcati jednostavno iz goruceg auta, zar ne)
ono sto si mozda vidio na autima da se tvornicki stavlja u karoseriju nije pur pjena (usporedi, pur pjena je krhka i ima vece mjehurice zraka, i ova tvornicka je zilava masa) neznam kako se tocno zove, ali znam da se koristi i u brodogradnji (ako to mozes nabaviti bilo bi zakon, treba i meni ;)) bilo je 2komponentinh masa i jednokomponentnih, uglavnom to je VRLO SLICNO pur pjeni, ali NIJE PURPJENA
i s razlogom nije purpjena

zmajchek

22-05-2007, 08:37

evo slikica ostavio sam ih u punoj velicini da bolje vidis. on je cak stavljao trokute u svaki kut radi ojaćanja dodatnog. eto pa uzivaj..
http://img523.imageshack.us/img523/5311/32949771xq7.th.jpg (http://img523.imageshack.us/my.php?image=32949771xq7.jpg)
http://img523.imageshack.us/img523/221/52537982gy1.th.jpg (http://img523.imageshack.us/my.php?image=52537982gy1.jpg)
http://img523.imageshack.us/img523/6280/48994262vl4.th.jpg (http://img523.imageshack.us/my.php?image=48994262vl4.jpg)
http://img201.imageshack.us/img201/4048/26706240um2.th.jpg (http://img201.imageshack.us/my.php?image=26706240um2.jpg)
http://img201.imageshack.us/img201/4195/43041512wi2.th.jpg (http://img201.imageshack.us/my.php?image=43041512wi2.jpg)
http://img201.imageshack.us/img201/8873/96514472fc3.th.jpg (http://img201.imageshack.us/my.php?image=96514472fc3.jpg)
http://img523.imageshack.us/img523/113/41772105xt4.th.jpg (http://img523.imageshack.us/my.php?image=41772105xt4.jpg)
http://img201.imageshack.us/img201/2694/11pc6.th.jpg (http://img201.imageshack.us/my.php?image=11pc6.jpg)
http://img201.imageshack.us/img201/2900/12ob8.th.jpg (http://img201.imageshack.us/my.php?image=12ob8.jpg)
http://img523.imageshack.us/img523/4440/33250370te5.th.jpg (http://img523.imageshack.us/my.php?image=33250370te5.jpg)
http://img201.imageshack.us/img201/5947/71177689ex3.th.jpg (http://img201.imageshack.us/my.php?image=71177689ex3.jpg)

chaos

22-05-2007, 16:26

zaboravi na purpjenu.
zašto?
jer purpjena kada se stisne nema elastičnost nego se mrvi, (našpricaj jednu hrpu ili ako imaš negdje i kad se osuši stisni ju prstom, ona će se podrobiti i ostati zdrobljena) osim toga purpjena kada se nedajbože zapali ispušta vrlo otrovne plinove....(a to nam najmanje treba ako se nemožemo iskoprcati jednostavno iz gorućeg auta, zar ne)

ono što si možda vidio na autima da se tvornički stavlja u karoseriju nije pur pjena (usporedi, pur pjena je krhka i ima veće mjehuriće zraka, i ova tvornička je žilava masa) neznam kako se točno zove, ali znam da se koristi i u brodogradnji (ako to možeš nabaviti bilo bi zakon, treba i meni ;)) bilo je 2komponentinh masa i jednokomponentnih, uglavnom to je VRLO SLIčNO pur pjeni, ali NIJE PURPJENA
i s razlogom nije purpjena

Nadam se da smo mislili na istu stvar, ali da nebi bilo zabune evo ]http://forums.freshalloy.com/showthread.php?s=d50e73c5bdc2f90fe7acb34cfcffbbd9&t=162693"][/url] Chassis stiffening foam result - Part 1, qualitative result*long post 56k go away* [/url]

http://i17.tinypic.com/5y3adys.jpg

Za nabavu ću se morati raspitati, valjda netko tko se bavi brodogradnjom ima tako nešto.

FormatX

22-05-2007, 16:43

chaos

22-05-2007, 23:30

ovo što je gore na tom ]

I ja san mislija na to samo što nisan ni ja zna pravo ime, pa san blebnija pur-pjena.

[quote=FormatX]
ako pričamo o PUR PJENI, to je ona pjena koja se šprica oko prozora i štokova vrata i sl...

Ovako nekako:

http://i10.tinypic.com/4kuwmr4.jpg

http://i16.tinypic.com/5x75xr6.jpg

http://i8.tinypic.com/5y2yujk.jpg

http://i7.tinypic.com/4kk3vol.jpg

(Da ne mislite da je žica u bravi najgore što vam netko može podvaliti)

M A F Y

30-05-2007, 10:56

FormatX

21-02-2008, 08:47

gdje u hrvatskoj kupiti cjevi za kavez?
od kojeg materijala najbolje?
koja debljina stjenke i koji fi cjevi?

treba nam to za DIY kavez

hvala

a112

21-02-2008, 19:21

Ako ces atestirani,onda ti trebaju Bešavne cijevi i potvrda atestiranog varioca.
Ako ces DIY,ja bi opet isao na istu shemu,jer nikad ne znas kad ce ti zatrebat.

FormatX

21-02-2008, 20:12

Ako ces atestirani,onda ti trebaju Bešavne cijevi i potvrda atestiranog varioca.
Ako ces DIY,ja bi opet isao na istu shemu,jer nikad ne znas kad ce ti zatrebat.

besavne cjevi pod obavezno, a atestiranog varioca imam ;) tako da nemas brige, potrebne su mi samo odgovarajuce cjevi