2021 XC Bike Thread

I have a ShockWiz and I’ve found good value in it across a number of bikes I’ve owned. It often helps find a good starting point or can help diagnose things if you are having a hard time parsing out between a few potential choices.

I lend it out to friends regularly as well, so if you have a few people you know, it’s worth sharing the cost.

Wow. All the spacers plus a riser plus the increased stack from the 120mm fork.

Yeah, I would definitely start with moving the stem more towards the middle of the stack to start.

2 Likes

lol yeah. Waaayy too high. This just brought it into focus.

and LIam i do have the stack/reach etc but the geometry is so different i wasn’t really sure how to apply it to the new bike.

But regardless, sounds like hands are way too high. It’s like trying to maneuver a desk through single track

I agree with Steve above. The reason I asked about Stack and Reach was because when I changed over to my Spark (similar geo to the SE) from my Anthem, I matched the set ups Stack and Reach which required dropping the bars about 10mm from “factory”. Then from that point I’ve still dropped another 10mm and have improved the handling of the bike.

It was a change I didn’t think I’d need at all. I thought I’d struggle to get it as low as the full XC Anthem.

1 Like

Yes. Our shop (team) sponsor loaned me one for several weeks a couple years back. For riders not already expert or confident in tuning suspension it’s a great little tool.

After riding different trail systems and following the tuning recommendations, the bike felt better and was faster (according to strava segments). I then started playing with the knobs and pressures. That experimentation plus the Wiz feedback definitely helped me better understand how to adjust the bike and what the different adjustments really do.

My experience seems to parallel what Steve described.

Your question reminds me that I keep meaning to buy my own Wiz as the shop has since gone dark.

If you haven’t found them yet, Fox did a series of videos about shock tuning. You Tube channel. It’s mix bike + motor stuff so have to poke around a bit.

1 Like

I bought one a few years ago and tried it. I found that I always told me I was 95% + correct and I am not a suspension guru. I sold it after a few months.

You can often rent these at your LBS.

Suspension will surely have this technology built into it soon… I hope.

1 Like

nothing new really, but some more pictures together (and possibly a wider carbon wheelset!)

1 Like

I took all the spacers off and it’s worlds better. I’m going to ride it a bit and see what happens. Next step is to flip the stem or get a new stem that makes a bigger difference when you flip it

2 Likes

Awesome. I toyed with the idea of getting a stem with more negative drop. I’m pretty comfortable now, plus the new Garmin mount would stick up like a rude thing and look silly if I did.

I used one and found the results inconclusive. I ran the test on the same ride 5x and it would keep telling me to switch back to the previous settings. Add air pressure then remove air pressure, slow rebound then raise, take a token out then add one back in. It was helpful to see what changes did what but I wouldn’t take it as the end all.

2 Likes

XC suspension in particular doesn’t allow for tons of external adjustments so my recommendation to folks curious about their set up is just to follow the basics.

  1. Get your sag set up dialed, people often skip this or “get it close enough” - modern bikes and air shocks operate with very narrow “sweet spot” windows. So make sure your air pressure is at least in the ball park of the common sag suggestions on XC, 15 -20% is common. Ideally you’ll have a bike with recommended PSI settings for a given weight. That’s not always the case and it’s still best to measure sag. Plenty of videos out there to show good techniques, bring a friend for best results.
  2. Adjust your rebound. This is personal preference, but a lot of riders run theirs too slow - remember you’ll want all of your travel available for each successive bump and hole, if your rebound is too slow your fork and shock can “pack up” - conversely, too fast and you’ll feel a bit too much like an un-damped pogo. Still, this is preference.
  3. Finally adjust your external compression settings to preference. I’m not referencing lock out, or any “pro-pedal” switches, use those as the terrain dictates, but some do offer some low speed compression adjustments. Firmer for race day, softer for long days in the saddle (my take any way).

Trouble shooting almost always comes back to air spring. If you’re confident on your sag setting, you’ll then just need to add or remove volume spacers to help fine-tune the air curve.

5 Likes

Having a carpal tunnel problem and just came across this post from a while ago…

Long story short, getting numbness/tingling on both hands when during really heavy efforts/races on the XC mountain bike. For intervals on the road, or more relaxed riding…no pain. But when really getting it, the classic median nerve distribution (carpal tunnel syndrome) goes totally numb.

I’m wondering how you dealt with this? I know that a part of it is that I am gripping too tight, putting a lot of pressure on my palms, as well as the need to improve my posterior chain strength and conditioning, but I’m wondering if anyone here found exercises, mental reminders, or gear choices that helped make these changes?

Thanks in advance

Ergon make some nice grips with a flatter side section for the heels of the hands. Might be worth a try?

I still have some issues on the trainer every so often (my trainer bike is an old MTB) but not outside on my current MTB anymore. I use Ergon GA2s, which seem to work better than other grips I’ve tried. When it was really bad for a while, I did ride the trainer with a fairy minimal carpal tunnel brace, but I wouldn’t have wanted to wear it outside on the MTB. It did help some on those trainer rides though. Once I was able to find some relief, it mostly just took time for things to heal and for it to become less of a recurrent issue.

Some of it I think is bad habits with elbow positioning and wrist flexion - I like the idea of riding on the trainer with a carpal tunnel brace on to maybe get some muscle memory going. Just ordered a set of GA3’s to try something different, been riding the ESI chunky’s.

It’s honestly pretty scary. I’ve never had any numbness or tingling last longer than a few seconds and definitely less than a minute when relieving pressure. This definitely has my attention!

Thanks!

3 Likes

Yeah, my doctor suggested the brace. I have GA3s on my trainer bike for a little extra support and I like them. Hope they help you! I agree on it being scary. My doctor was surprised because I’m fairy young and it was my non-dominant wrist and hand with issues, but I’m thankful that some patience and following her advice seemed to help. Good luck!

have you considered your brakelever position? might be too flat so you twist your hand into an uncomfortable position?

1 Like

Anyone know if any manufacturer besides Trek (supercaliber and procaliber) makes an XXL/23" XC bike?

@Nate_Pearson is on an Epic, so Specialized must have a model that is big enough for him.

1 Like

He is/was on the latest S-Works Epic (prior to breaking another top tupe… doh!), but they still max out at XL size. So he is just running a super tall post in that size. Pics on IG and here showed his step a while ago.

They appear to list a XXL size in their “Size Guide”, but it doesn’t appear they actually offer a bike in that size.