RidingAgain Posted August 26, 2020 Share Posted August 26, 2020 (edited) I found this video interesting to watch all that happens physically, with bike and rider, as the bike hits the ground. What first caught my attention was a delay in the movement of the suspension of one of the bikes when it hit the ground. I understand this is in slow motion, but it was still interesting for me to see... And that the different FS designs react differently in time/movement after landing. Then I began to look at how the rider movement was on each different suspension system. I know... Many variables... But I thought it was worth taking a longer look at. Here's the video... Edited August 26, 2020 by RidingAgain Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted August 26, 2020 Share Posted August 26, 2020 (edited) I can't help but focus on how much the forks appear to flex! Edited August 26, 2020 by mack_turtle Quote Link to comment Share on other sites More sharing options...
Barry Posted August 26, 2020 Share Posted August 26, 2020 Wait...what? What's this now? <Insert Seinfeld leaving the theater GIF here> Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted August 26, 2020 Share Posted August 26, 2020 I've had a Google Alert for "grim donut" for months now. still waiting. 1 Quote Link to comment Share on other sites More sharing options...
AntonioGG Posted August 27, 2020 Share Posted August 27, 2020 I think the setup on some bikes needed tweaking. Probably more spacers in the fork/shock. You can tell when they bottom out how much his face gets closer to the handlebar. Quote Link to comment Share on other sites More sharing options...
TheX Posted August 27, 2020 Share Posted August 27, 2020 Now THIS...works. Quote Link to comment Share on other sites More sharing options...
Bamwa Posted August 27, 2020 Share Posted August 27, 2020 Interesting content. You're getting it RA! Cheers. 1 Quote Link to comment Share on other sites More sharing options...
RedRider3141 Posted August 29, 2020 Share Posted August 29, 2020 On 8/26/2020 at 10:49 AM, mack_turtle said: I can't help but focus on how much the forks appear to flex! As my college prof said: "Everything flexes, even engines are flexible bags of metal." 1 Quote Link to comment Share on other sites More sharing options...
cmc4130 Posted August 31, 2020 Share Posted August 31, 2020 On 8/26/2020 at 10:34 AM, RidingAgain said: I found this video interesting to watch all that happens physically, with bike and rider, as the bike hits the ground. What first caught my attention was a delay in the movement of the suspension of one of the bikes when it hit the ground. I understand this is in slow motion, but it was still interesting for me to see... And that the different FS designs react differently in time/movement after landing. Then I began to look at how the rider movement was on each different suspension system. I know... Many variables... But I thought it was worth taking a longer look at. Here's the video... I wasn't expecting that much rear tire squish with 30 psi! Quote Link to comment Share on other sites More sharing options...
TheX Posted August 31, 2020 Share Posted August 31, 2020 Definitely one place that cush-core would help. Quote Link to comment Share on other sites More sharing options...
ATXZJ Posted August 31, 2020 Share Posted August 31, 2020 Its a schwalbe racing ralph, and it has a thin sidewall. Also Lucas is a fairly big guy Quote Link to comment Share on other sites More sharing options...
RidingAgain Posted August 31, 2020 Author Share Posted August 31, 2020 (edited) And this is just what, maybe a 24+" height jump. Just read on the Brushy Creek thread that one of the jumps hits about 8'. So a 2+' jump does this to a tire... What's going on with an 8' jump... Even if it's not to a flat landing. Edited August 31, 2020 by RidingAgain Quote Link to comment Share on other sites More sharing options...
Barry Posted September 17, 2020 Share Posted September 17, 2020 On 8/26/2020 at 12:19 PM, mack_turtle said: I've had a Google Alert for "grim donut" for months now. still waiting. 4 1 Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted September 17, 2020 Share Posted September 17, 2020 I was surprised to see that Grim Donut was not a total disaster. seems like it's probably really good at one thing though. Quote Link to comment Share on other sites More sharing options...
Barry Posted September 17, 2020 Share Posted September 17, 2020 "We might have stumbled on the right amount of stupid." 1 Quote Link to comment Share on other sites More sharing options...
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