| Author | Message | ||
     Dcmortalcoil |
Showa Race shock length is stated to be Max 329 +/- 4mm Can anyone verify that that stock 1125 R/CR shock has the same length? | ||
| Thefleshrocket |
Thinking about swapping something else in? | ||
| Dcmortalcoil |
Yes. I have Showa race shock. It's just too stiff. Unless I'm able to revalve it, I need a replacement. And the retailers always ask me for the stock length. | ||
| Knickers |
Stock shock length is 320mm eye to eye. (from tech@ebracing.com) | ||
| Dcmortalcoil |
thanks Knickers. | ||
| Jgarner99 |
>>I have Showa race shock. It's just too stiff. DC, You don't need to replace the shock, you just need a lighter spring. I had the same problem with the Showa race shock. The answer I came up with was to fit the stock, original-equipment spring onto the Showa race shock. The body dimensions of the Showa race shock are identical to the stock shock (also Showa), but the spring retention hardware is slightly different. At the moment, I'm in the middle of a move, so I can't find the notes to tell you exactly what I did, but it wasn't too difficult (didn't need to fabricate anything). If I remember right, a combination of the spacers and rings from the two shocks allowed the stock spring to fit right up. After that, there was PLENTY of adjustment in the race shock's valving to soften it or harden it as necessary. (I weigh about 175 with gear.) It's a good shock; you just need the right spring rate. | ||
| Slaughter |
I was going to ask what the sag was before you pronounce the shock as unsuitable - and where your compression damping is set. A suspension shop such as Traxxion can get you the correct spring but for giggles, see if you can't get a buddy to help you set it for correct sag - should be about 25mm. | ||
| Dcmortalcoil |
I was not at the point to even measure the sag. It would not budge. I took the spring off and tried to compress, and it would literally take on my weight to compress without the spring. I bled some nitrogen out of the reservoir, and that helped a lot. Now I can compress the shock, without the spring, with much less effort. I was using the stock spring (replaced 550lb/in) with the OEM spring. Still too stiff. Just got the Race Tech spring (their lightest). Will see how that works out. BTW, I'm using showa 25mm cartridge from Erik Buell Racing, with .95 springs, with 2.5wt oil set at 125mm level. The forks are working well. The light oil and lower level is making the fork really compliant. | ||
| Jgarner99 |
DC, It sounds like there's something wrong with that Showa race shock of yours. Mine was nothing like that (it works fantastically with my 1125's stock rear spring). If I were you, I'd get in touch with Erik Buell Racing. They sold it to you, and they should be able to find out what's wrong with it and set it right for you. Just my 2 cents.... | ||
| Dcmortalcoil |
I have two Showa racing shocks. Both (bought like 5 months apart) are identically stiff. So both shocks having the same problem will not be likely. But bleeding nitrogen out seems to be solution for me. | ||
| Jgarner99 |
I may be wrong, but my understanding of the nitrogen within the shock is that it is not intended to, nor should have, any major effect on suspension action. As the shock strokes, and its piston rod travels into the shock's body, the volume available within the shock decreases. The oil within the shock is not compressible. Therefore, an airspace is required, equal to or greater than the difference in volume between full extension (shaft out of the body) and full compression (shaft in). That is the purpose of the piggyback reservoir, and nitrogen is used simply because it is non-reactive (unlike everyday "air," which includes moisture and oxygen). It is my understanding that the nitrogen is under pressure to reduce cavitation and emulsification of the damping oil. Compared to the forces required to compress the spring, and to force oil through the damping orifices within the shock, the pressure on the nitrogen should have negligible effect on the spring rate and damping rates of the shock. Reducing the nitrogen pressure CAN cause problems, however. I think it's time for you to get some real, expert help. If I were you, I'd get in touch with Traxxion Dynamics, Race Tech, or Super Plush Suspension. Time to quite fooling around and call in the cavalry.... | ||
| Blake |
+1000 | ||
| Eece_ret |
How much for one of the "failed" showas. |
