|   anyone tried coil shock on racer x? | silas
Jan 14, 2002 8:29 PM | | The frame is light enough that even with a quality coil, the bike would still be fairly light. Al or ti; Romic, Stratos or Fox. Has anyone tried or is it even possible? |
| The older RX's it might not be the best idea, but the new... | JmZ
Jan 14, 2002 8:45 PM | | The Older models used the shock as a stressed member of the frame. Ala Amp and bunches of others. Several different manufacturers had problems with the side loads doing not nice things to the shock.
The newer design with the swing link should limit that problem. It should easily work with any shock of the right dimensions. Let us know how it works.
JmZ |
| I asked that question.... | The Squeaky Wheel
Jan 15, 2002 3:51 AM | | I posed that question to Allan at Titus. Basically he said its not an issue of fit or durability. Rather, the geometry of the RX & the design of the axle path would cause the bike to blow through the travel of a coil shock too quickly. Although it seems to me that careful shock selection would minimize/eliminate this effect.
Looking forward to hearing more responses.
The Squeaky Wheel |
| I asked that question.... | Charles Coker
Jan 15, 2002 7:14 AM | | while you could fit a coil over on the 02 Racerx/HH100X you definitely run the risk of the seatstay brake brace smashing into the seattube
a coil shock has a tad more travel for the same spec shock
that's why for example on an XCE you get 4" with coil and 3.6" air
using the standard 6.5x1.5 shock
so, you will absolutely void the warranty if you put a coil over on it and it frys the frame
Charles
hammerheadbikes |
| air vs coil travel the same, but different rates | derby
Jan 15, 2002 2:21 PM | | A coil or air 1.5 stroke works on an XCE, but limits travel by that much less shock stroke travel. And I seriously question if any air shock even gets full travel using 15 - 25% sag without a falling rate shock link geometry due to the progressive ramp up of an air spring.
I've been researching getting a coil shock that would work on both the Tracer and XCE. Both use 6.5 inch eye to eye. The Tracer is speced, (like nearly all suspensions using 6.5 shocks) for a 1.5 inch stroke. But the XCE is speced for a 1.75 inch stroke. The XCE has less travel with a Fox Float because there is no 1.75 inch stroke Float made. Fox makes a 6.5 x 1.75 coil (Romic coil shock is 6.5 x 1.5, and Darien is just now beginning to look into modifying or developing a 1.75 stroke for the XCE to get more than 3.6 inches of travel).
- ray |
| Why would that be? | Flatlander001
Jan 15, 2002 4:48 PM | | If both the coil and air have a 1.5 inch stroke why the difference in travel? And if I put a coil on my Tracer will I increase travel from the claimed four inches? Or am I really getting less than 4 now with the Float? |
| You are correct | derby
Jan 16, 2002 11:22 AM | | For example: The difference in travel of the air vs. coil on the Turner XCE is due to shock stroke. The 6.5 inch mount Fox Float only comes in 1.5 stroke while the bike was speced for a 1.75 stroke coil.
On the new RacerX a coil with the same stroke as the stock air will get the same (potential) travel. Titus is very careful about matching the shock linkage with their stock shock rates either for air or coil. And there is a progressively falling rate linkage with the reinforced mac strut of the new RacerX that would work very well with an air shock, but may require an initially firmer feeling linear coil sprung shock to avoid bottom out. This bike would probably feel smoother over small bumps with the stock air shock rather than a coil.
- ray |
| I think that's because the new one has falling rate. | Steve from JH
Jan 15, 2002 5:30 PM | | The old one was linear. |
| Oops! I should have said | Steve from JH
Jan 16, 2002 7:27 AM | | The old one, true Macstrut, had a rising rate. The new one has either a falling rate or close to it. The calculation is complicated.
But the new one has the shock rotating relative to the seat stay and starting off in-line with the stay. So it falls off in rate relative to the movement of the seat stay. |
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