|   terralogic questions? | happybiker
Oct 13, 2003 11:05 AM | | Does the F100X only lock out at full extension, ie. when you are at your sag point and on smooth ground will it lock out at that height? Also is it possible to run the fork at 90mm with addition of spacers? I am concerned it will be a bit tall for a Turner Burner I hope to build soon. Should I just go for the F80X seeing as it feels like it has more travel without the sag? Thanks. |
| X answers | RickN
Oct 13, 2003 2:43 PM | | Probably easier to answer your question with an example.
Say that you've set 20mm of sag, based on your weight and air pressure. If you are riding along on pavement with absolutely no bumps, the fork will be riding firm with your 20mm of sag. It'll move up and down a little within that 20mm, but won't compress more until you hit a bump or stand and push with all your weight on the bars (an X fork will s-l-o-w-l-y compress when you add pressure to the bars).
As someone aptly described a few weeks ago, the X is never "locked," a better description is "firm" and then "active."
You can run the F100X as an 80mm by following the directions in the manual.
It would probably be nice to have the option of a 4" fork on your Turner and reduce it to 80 if you need. |
| I'm curious, is this your experience with the Terralogic, or.... | Bikeless Rider
Oct 13, 2003 9:51 PM | | ...something you've heard. I'm trying to glean about these by wading through the posts, and have talked to Fox as well. I seem to recall Fox having told me that the locked sag is never more than 2 or 3 mm, and that the sag you set only applies to when it's unlocked and moving. Also, how does one reduce travel, Fox tells me there's no provision to do this, and that there are no spacers in it's design. I'm considering reducing one to 90mm for a Racer-X, to render it's head angle at 70.5. I really don't want to reduce by using less air pressure to create more sag, IMO that would change the feel of the fork too much, and I'd be pulling the fork up an extra 10mm everytime I loft the front end over things, a small consolation to some, but on marathon rides with lots of climbing, it could get annoying. Thanks for any help you can offer. |
| I'm curious, is this your experience with the Terralogic, or.... | RickN
Oct 14, 2003 4:46 AM | | I have about 15 hours on my F100X.
P. 14 of the manual describes the procedure to reduce travel. You can probably find the manual online. The manual says the travel reduction doesn't apply to the F80X.
As far as sag, one has to sit on the bike for about 30 seconds to get an accurate measure. If the fork is weighted (with you on your bike)its gonna have the sag you set. |
| The new Burner is designed for a 100mm fork. nm | Tscheezy
Oct 13, 2003 4:48 PM | | |
| I believe Tscheezy is right about the new Burners being......... | Bikeless Rider
Oct 13, 2003 10:02 PM | | ...built for a 100mm fork, but if you're a shorter rider, and don't want a 70 degree head angle, you could lower the front end and BB, as well as steepen the head angle to about 70.5, a good all around racing/trail riding angle, provided you have a fork you can do it with. This angle is equivalent to what a Ventana El Saltamontes with a 100mm Float ends up being, as Ventana designates a 19" fork as their geometry reference, rather than the 18.5" Fox. Your best off checking with the manufacturer about what exact height they're calling a four inch fork, when calculating the geometry, if you want to be accurate within a half degree on the build. IMO, ALL manufacturers should state EXACTLY what fork height they're using to calculate geometry, as "80mm", or "100mm" isn't really specific enough, after all, building the frame is an exact science, why shouldn't building up the bike be so as well. I'm a bit peeved by some frame manufacturers I've talked to (usually the larger corporations), that brag about the precision of their frame's design, then choose to generalize customers as being unwilling, or incapable of figuring geometry differences between forks that have the same travel height. Sometimes they even excuse their OWN lack of precision by claiming it doesn't make any difference, stating an 80mm is an 80mm, and a 100mm is a 100mm, just a lot of BS, and a lack of professionalism on their part. It is these type of manufacturers that have the label "end users" on the brain as they think of us, mostly as $$$$ rather than real people that are actually the sole reason they're in business, not the dealers and distributors they secrectly share business tricks behind our backs with. |
| Burners fork length | happybiker
Oct 14, 2003 1:35 AM | | I know it designed around a 100mm fork but it also has a 70* head angle which is pretty slack when combined with a fork that might be running at full extension when climbing. |
| The Burner borrows a lot of its geometry from the XCE... | Tscheezy
Oct 14, 2003 9:10 AM | | which, *despite* it's 70 degree HA, is considered to be one of the best climbing bikes ever produced (among those who have ridden them, anyway). ~71 has long been considered the NORBA racer standard HA, but once you feel what a "neutral" 70 does to the handling, it is hard to go back. This varies by taste, of course.
The Burner will be based on a FOX at 100mm of travel (475-480mm axle to crown). Their website has never been much of a source for info, unfortunately. It is too bad because Turner is extremely meticulous about calculating this stuff and hitting the specs right on the nose. Like Bikeless said, all that effort is moot if no one knows what the specs are that they are hitting so accurately.
Anyway, they announced the Burner about a year ago. About time they produced one, eh? ;^)
tscheezy |
| More | RickN
Oct 14, 2003 5:37 AM | | If you are sitting on your bike, your X will "sink" to the sag you determined by following the manual.
If you are climbing and unweighting the fork somewhat, you will have less sag than the situation above.
If your bike is sitting in the garage, even less sag. |
| agreed | dan K
Oct 14, 2003 8:31 AM | | I have about 3 months or so on the F100X and I agree with Rick's post(s).
Except I never sit on my bike for 30 seconds to see the accurate sag. The fork works so great that I get antsy to ride it. |
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