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tgent dan-roberts's article
Jun 13, 2019 at 11:17
2 days
Behind the Numbers: Specialized Stumpjumper EVO 29 Suspension Analysis
@hamncheez: Lol, very true. I hate that damn thing just because the marketing dept.
tgent dan-roberts's article
Jun 13, 2019 at 10:44
2 days
tgent dan-roberts's article
Jun 13, 2019 at 9:54
2 days
Behind the Numbers: Specialized Stumpjumper EVO 29 Suspension Analysis
Some people prefer plush and some prefer progressive and poppy. Waki is right though, with the amount of tuning possible on shocks, you can set this bike up to be either, with compression damping or as the author states with higher spring rates. However, different suspension platforms will lead themselves to be better set up one way or another and this definitely leans towards plush.
tgent dan-roberts's article
Jun 13, 2019 at 9:51
2 days
Behind the Numbers: Specialized Stumpjumper EVO 29 Suspension Analysis
I wouldn't say this article is ripping Big S at all. It's a very good and detailed analysis of their suspension design. What people need to understand, is there are pros and cons of every suspension design because you can't manipulate the physics. Pros of the design: Linear leverage ratio so the suspension is very active, great climbing sensitivity because the low levels of anti-squat, great braking sensitivity because the low levels of anti-rise. Cons: Linear leverage ratio so you have to run higher spring rates or a more progressive shock, not a good pedaling platform because the low levels of anti-squat, poor braking traction because the low levels of anti-rise. Notice that there were pros and cons drawn out of each characteristic.
tgent dan-roberts's article
Jun 13, 2019 at 9:46
2 days
Behind the Numbers: Specialized Stumpjumper EVO 29 Suspension Analysis
And that is exactly what he says in the first paragraph of the intro to the behind the number series. Numbers alone do not tell the story, nor does ride feel alone. By combining them, you can better educate yourself on explaining what you are feeling and then understanding why.
tgent dan-roberts's article
Jun 13, 2019 at 9:44
2 days
Behind the Numbers: Specialized Stumpjumper EVO 29 Suspension Analysis
Take a run down something gnarly where you are using all of your travel. Then take off your chain and do the same thing, you will notice how free your feet are and you'll meet Pedal Kickback. Brake Jack is harder to notice because you essentially can't get rid of it without changing the bike, but riding a bike with high levels of anti squat then a different bike/suspension design with low levels of anti squat and you'll notice how much more firm the suspension is when braking heavily, you just met brake jack.
tgent dan-roberts's article
Jun 13, 2019 at 9:41
2 days
Behind the Numbers: Specialized Stumpjumper EVO 29 Suspension Analysis
While the theory is correct, your numbers are very wrong and misleading. A 160mm travel bike at 30% sag will sit 48mm into its travel. A 138mm travel bike at 30% sag will sit 41mm into its travel. Only a difference of 7mm, and the BB on this bike is lower to make up for that difference. Compared to the Megatower for example (just taking it because it's another 160mm travel 29er that was reviewed yesterday), the BB height (in high) is 343mm and at 30% sage would sit around 295mm. The Stumpy's BB height is 328mm and at 30% sag would sit around 287mm. Again, only a difference of 8mm, though the Stumpy is lower, which confirms the low feeling of the bike.
tgent dan-roberts's article
Jun 13, 2019 at 9:31
2 days
Behind the Numbers: Specialized Stumpjumper EVO 29 Suspension Analysis
This is fantastic and excellent analysis! This also excellently explains the general feel of most specialized full sus trail bikes and how they generally tune their horst link suspension. Note that just because this is what a specialized horst link behaves like, you can tune a horst link bike to behave very differently. Spec seem to prioritize anti-rise, pedal kickback, and active suspension over anti-squat which IMO leads to their bikes feeling very inefficient. Also, on the standard stumpy, this linear lev ratio seems right at home, but on the Evo, I wish it was much much more progressive for a more aggressive ride.
tgent dan-roberts's article
Jun 13, 2019 at 8:46
2 days
Introducing 'Behind the Numbers' - A New Suspension Analysis Series
I'm super pumped for this series! This is also probably the best explanation of the basic bike kinematics terms I've seen yet. Only thing missing IMO is a more in depth explanation of how all the variables are calculated. It's good to know but may be too in depth for the average reader. Also, I assume you are using the linkage software for all analysis?
tgent mikekazimer's article
Jun 13, 2019 at 8:08
3 days
Review: 2019 Santa Cruz Megatower - Stiff & Solid, But Not That Sensitive
@hamncheez: To be fair, I think you're actually right. The article lists the MT cranks as X01 but SantaCruz lists X1 on their website, so the bike prob does come with X1 cranks. That being said, the MT does not cheap out anywhere else, every other part of the drivetrain is X01. The SB150 Race build is full X01 except for the chain which is GX. Again, $200 more for kashima and no carbon wheels. The carbon wheels are worth a lot more, I'd guess at least $1k, than kashima in resale value, hands down.
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