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RoJo1 Added a reply to High vs. Low Tire Pressures: Which Is Faster?
1/25/2025 12:34am Great test. I'm not entirely sure on the assumption that higher pressure = lower rolling resistance for MTB. Higher pressure can cause your c of g to have to rise/fall more over bumps and dissipate energy. If you had the appetite then straight line rolling tests over a variety of surface roughnesses would be cool.
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Between The Tape Liked a forum topic High vs. Low Tire Pressures: Which Is Faster?
1/24/2025 8:23am
We all know the theory: lower tire pressures mean more grip, and higher pressures roll faster. But when it comes to real-world speed, which one really wins? I set out to answer this with 30 timed runs down the same track. ◾ The Experiment Two sets of tire pressures were chosen for my 88kg (194lbs) weight: 25/28 psi (front/rear) for the higher pressures and 18/20 psi (front/rear) for the lower pressures. These pressures maintain a consistent 0.9 front-to-rear ratio, with the high pressures aligning with recommendations such as those from E13 . After three warm-up laps, each tire pressure setup...
This forum topic has 34 replies.
SarHuggins Liked a reply to forum topic Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/21/2025 6:10pm
Great work on this! I'm really curious to see how the results stack up — the variety of tyres in your test should provide some useful insights. Will checkout the video!
This forum topic has 19 replies.
JVP Liked a reply to forum topic Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/20/2025 7:38pm
Great test! I bet the DHF would still win this... ok, I'll crawl off to that old guy thread now, lol. Edit: I really like how you did a head-to-head comparison each day to control for the day's conditions and your comfort with the track.
This forum topic has 19 replies.
RoJo1 Added a reply to Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/20/2025 5:54am Also, I hate to say it, but I think larger volume tyres roll faster, as shown in road and XC: https://www.schwalbetires.com/technology-faq/rolling-resistance/ I'm doing decent speed for a respectable rider, but not tyre ripping off the rim issues like WC pros, so maybe my requirements are different.
RoJo1 Added a reply to Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/20/2025 5:37am I think the other tyres are more draggy, but can't make up this time loss through the corners. I guess if you are losing time on every straight the emphasis is on the rider to make this up in the corners, which seems to be asking too much as the Vigilante corners great as well. Assegai feels epic because you...
nsp234 Liked a reply to forum topic Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/20/2025 5:30am
Amazing test! The results are surprising (to me at least). What is it in your opinion that makes the vigilante so fast?
This forum topic has 19 replies.
RoJo1 Added a reply to Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/20/2025 5:01am I did A-B-A testing on each day aiming to get in 5 quality laps before swapping tyre, then 5 laps, swapping back again and another 5 laps. Timing was done by picking the exact GoPro frame where I crossed a specific feature on the trail, e.g. tree, rock, post etc so that I could get accurate timing to 1/60th sec...
sethimus Liked a reply to forum topic Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/20/2025 4:51am
whats the tldr?
This forum topic has 19 replies.
RoJo1 Started a new thread Front DH Tyres Accurately Timed: Kryptotal vs Assegai vs Magic Mary vs Vigilante vs Plus+
1/19/2025 6:24pm Hey all! I did a whole heap of tyre testing last year at Bike Park Wales. The aim was to accurately measure which were quickest, based on multiple timed laps. I had always intended to make this video in case anyone finds it interesting or helpful, but only just got round to making it. Hope you enjoy it, let me...
This forum thread has 19 replies.
Explodo Liked a comment about Feature Gravity Tire Shootout - Vital Test Sessions
12/5/2024 3:29am
I can tell you that the Argotal is absolutely horrible on hardpack or loose over hard, so they'd knock it down for that. The shoulder lugs just fold over way too easily leading to loss of traction. It's fantastic on softer surfaces and rolls nicely otherwise.
This feature has 27 comments.
Eoin Liked a comment about Feature Gravity Tire Shootout - Vital Test Sessions
12/4/2024 12:32am
Interesting how poorly the Schwalbe fared. I have the Radial Albert and for sure I would not put it out front, but it seems pretty good to me and very impressed by the hard wearing nature of it. It takes a long time to figure out the pressures, you need easily 5psi more than a non radial tyre.
This feature has 27 comments.
Jason_Schroeder Liked a comment about Feature Gravity Tire Shootout - Vital Test Sessions
12/4/2024 12:32am
Doing some micro-shootouts comparing a few tires (or products in other categories) is high on our to-do list next year. Everything is so good these days, that zooming in and comparing some really similar products would be rad. Especially with tires when visually so many look similar. I also really want to ride the Shredda. Thing looks mean. It's also very on-brand for me....
This feature has 27 comments.
Jason_Schroeder Liked a reply to forum topic Tire chat (nerds only)
12/4/2024 12:23am
Alright, here is my two cents on Schwalbe's radial casing and the Albert. Sorry for word-barfing so hard in a forum. So we tested the Albert at the end of summer before it launched as part of a gravity tire shootout that's dropping next week. I know, a bit of a delay. But we didn't have any information about the tire during the test, and **spoiler** it ended up being our least favorite. Part of this was due to the lack of support and damping from the casing. Part of it was due to the tread design struggling to bite...
This forum topic has 1720 replies.
michaelbellamy Liked a comment about Feature Deathgrip 2 – a MTB Movie Review
12/4/2024 12:15am
It is a truly brilliant film, great work lads!
This feature has 3 comments.
Zero Cool Liked a comment about Feature Deathgrip 2 – a MTB Movie Review
12/4/2024 12:15am
I really enjoyed it. I wish there were more like this
This feature has 3 comments.
RoJo1 Added a reply to 140 laps A/B test data -- considerations for future mtb data projects for readers and test riders
11/6/2024 12:56pm Intriguing. Keep the posts coming. I hate that MTB markets crap without data to prove the benefit. As an aside I'm amazed that setup B is slow at the start. Let's say it's a new bike, I would be quicker for sure on my very first run than my old bike (I know because I've also done accurate timed testing)...
Snfoilhat Liked a reply to forum topic 140 laps A/B test data -- considerations for future mtb data projects for readers and test riders
11/6/2024 12:51pm
Early observations and new questions With the benefit of the big picture and despite the funny business with the "time" axis having a misleading scale, y'all can just see that Bike Setup B approaches and maybe even ends up faster than Bike Setup A, eventually. I'll show how I did the statistical tests in the next post and ask if it seems convincing and how you might have done it differently. But I think some cool things happened in the early observations. Here's when the parts started appearing that I think might help others as they think about their testing...
This forum topic has 20 replies.
Con Rad-ish Liked a reply to forum topic 140 laps A/B test data -- considerations for future mtb data projects for readers and test riders
11/5/2024 11:34pm
Would you be willing to send a file with the raw data? I am an Engineer in the industry and would like a stab at doing some analysis on that to maybe answer some questions and pull-out contributing factors.
This forum topic has 20 replies.
RoJo1 Added a reply to 140 laps A/B test data -- considerations for future mtb data projects for readers and test riders
11/5/2024 12:49pm MaxxTerra on Bike B, MaxxGrip on Bike A. Rider got faster with practice and Bike A tyres wore out.