Archive for December, 2007

showa damper oil capacity table (honda crf 250/450)

damper oil capacity in ml:

  • CRF 250R: 195ml
  • CRF 250X: 192ml
  • CRF 450R:
    2002: 189ml
    2003-on: 195ml
  • CRF 450x: 190ml

Fork damper oil level in mm:

  • 2002 CRF450R: 5-10mm
  • all other models: 42-47mm

Add comment December 20th, 2007

Base jumping in wingsuit by Dave Barlia

base jumping in a wing suit is one of the most dangerous extreme sport. Dave Barlia has been base jumping for 16 years, and is one of only a few athletes to explore slope flying in a wing suit. just imagine that u flying at speed more than 100Mph just a few meters above trees and mountain rocks. there are only few places in the world that are conducive to fly wingsuits. Conditions are very sensitive it must be little or no wind, which can create unknown turbulence that could kill you.
best locations in the world to fly wingsuits are the mountains of France.
“Being in a wingsuit is like being in your own personal jet fighter. It’s like you sprouted wings and you’re a bird. To me that’s the ultimate freedom.” says Dave Barlia.
video of wing suit base jumping:


Man, Mountain, Wingsuit - video powered by Metacafe

Add comment December 19th, 2007

servicing showa forks on honda crf

showa 47Showa front fork on honda crf(cr) is almous trouble free but require periodic service to replace the fork oil. inspect bushings, seals… Servicing showa front fork (honda crf 450, 250) is really easy task so don’t be afraid and do’it yourself.

1. remove front wheel
2. remove the brake hose clamp
3. remove the handlebar
4. release screws (A, pic1) if u don’t release these screws u won’t be able to loosen the fork damper with 50mm locknut wrench (C) now u just loosen the fork damper (C) now when you loosen damper you can also release bolts (B) and remove fork
service fork
5. open the air release screw to release any pressure, turn the compression and rebound counterclockwise to its softest settings
6. now u can completely remove the fork damper with 50mm locknut wrench (A, pic2) then lower the fork tube until the dust seal bottoms against the slider (picture3)
Pic2
service fork
pic3
showa
7. pump the fork tube to drain fork oil, if u want just change the fork oil inspect the fork for any damage and refill the right amount of fork oil in fork (A, pic3) se table
8. if u also going to change seals and oil in damper temporary install the fork damper in to the fork tube and tighten hand tight
9. lock the axle holder in a vise fitted with soft jaws, loosen the center bolt (A, pic4) so that is free from the slider, push on the fork cap to extend the center bolt and the piston rod from the axle holder, then install the stopper plate (B, pic4)
pic 4
service fork
10. hold the locknut with a wrench (C) and loosen the center bolt (A, pic4)
11. remove the center bolt and the pushrod
12. push on the fork damper and remove the stopper plate.
13. remove the fork damper and fork spring from the slider then remove the slider from the vise (see pic.5)
pic 5
honda crf fork
14.to separate the fork tube from the slider hold the tube and pull hard on the slider using quick in and out strokes don’t forget remove dust seal and stop ring (pic.6)
pic 6
honda crf 450 r
14. remove the fork cap from the fork damper (pic. 7)
pic 7
dirt bike servicing
15. drain out the oil from damper inspect all the parts for any damage and refill the new oil in the damper as follows:
- support the fork damper so it is vertical and fully extended
- pour the recommended quantity of fork oil (5W fork oil)into the fork damper see table
- slowly pump the piston rod several time by hand to bled air from damper on the last stroke fully extend the piston rod check an set oil level as you seen on the picture bellow
showa fork
16. when you inspect all the parts just install al the parts together in reverse order don’t forget fill oil in fork see table for quantity of oil in fork (A, pic.3)
thats it i hope u understand all steps in case of problem write a coment!

Add comment December 18th, 2007


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