Mountain Bike Geometry 101 | A Complete Guide To Geometry + How It Affects Your MTB
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- เผยแพร่เมื่อ 10 ก.ค. 2024
- We've put together this Geometry 101 to help you figure out everything to do with mountain bike geometry! There's plenty of complex and mis-understood terms, angles and measurements going around out there, so here's what you need to know and how it affects how your bike feels 👍
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19 minutes about geometry. Doddy and the team have outdone themselves!
Awesome!
Was it useful for you?
Absolutely useful. Added to my TH-cam Favorites short list.
Yes!!!! I'm off to buy a new bike tomorrow, so it was
.brilliant to receive this important information
Beforehand !! THANKS GUYS!!! 😀
I feel so privileged that the Dodster has taken time out of his hair modelling career to explain MTB geometry to us!
I really am LAUGHING OUT LOUD
And imagine David Schwimmer is there with him.
His hair is as stiff as a porn stars micky.
top tube? you probably meant nutcracker.
lol
Hell yes
@@Shpektrometer and God help those with large undercarriage
LOL
I actually saw a bicycle brand called nutcracker and it had that written on the top tube :D
Now I need a vid explaining all the different types of suspension linkage and how they behave (VPP, DW, DELTA, etc)
Best geometry explain ever!!
Absolute hero of an episode. We've all been waiting ever since that ask GMBN ep a few months ago
THANK YOU! Great episode. After a near 25-year hiatus, I started mountain biking again. (Didn’t realize how much I’d missed it. Loving it.) As you can imagine, A LOT has changed; including terms used, varying types of MTBs, components, and more. This episode has provided me with clarity needed.
I've been waiting for this video without knowing it! Really helpful to know the anticipated handling changes with changes in geometry.
I've been waiting for a comprehensive video like this for so long. Thank you gmbn tech! I love the quick bike anatomy explanation at the beginning. Perfect video to send to friends when they ask about what effects certain measurements have, half the time I never even know myself haha.
Thanks for this video, great and simple explanation about different parts of geometry, there's not that many good vids like this out there so definitely something that was needed.
You have made it so much easier for me to understand the dynamics that go into my bike. Thank you for the great information!
Great video that takes some of the myths and headaches out of all the number crunching you seem to have to be able to do before committing to a certain size bike. Perfectly explained, great stuff!!
Probably one of if not the most helpful MTB vids I’ve seen. Keep up the great work guys!
How about a video about different suspension linkages. Does the shock placement have any real difference?
For example Canyon Neuron 2019, AL vs CF. AL has bottom mounted shock, CF has top tube mounted.
This please!!
Horst four-point or four-bar rear suspension. Look up Turner bikes.
Merida/Centurion LRS and GT I-drive also was some interesting cookies.
Would be nice to see one retrospective about various soft-tails too.
Yeah that would be really cool. DW Link-Horst-VPP-all the other fun stuff out there. So many cool options these days...
Hi guys how about 26ers frame with 27.5 front fork and 27.5 wheel set?
This is outstanding, guys!
Top quality video, thank you!
I’ve been riding for over 30 years and l’ve learnt so much. Thanks. Brill explanation
Excellent 101 start video with explanations! Provided new information for my understanding of current designs. Thank You!
Great video Doddy. Been biking for over 35 years and I can honestly say I learned a couple things. Well done sir
Great video Doddy! Looking forward to the up coming info.
Brilliant video. One of the most helpful I've found for mountain bikes.
I don't know how you make me listen to such a boring subject so intently. You have helped me as a beginner rider with so many of your videos, you and your team. Thank you! I ride a 2015 Diamondback SYNC'R with a 4" bar rise built up an old proflex 96 with a 1x10 as well as a 4"bar rise and I even got the wife out there with me an a 2018 GT aggressor with new hydraulic breaks bar riser pedals upgraded rotors mig shift 1x7 which when I get the money will become a 1x10 and I learned almost all I needed through this channel!!
Thanks guys and ride on!
Great job! This is exactly the kind of video I'm looking for. Thanks a lot!
You are a good teacher, I have learned more on bike than I have learnt my whole life, thanks you
Great video and information, Doddy! Of course, I’ll need to watch it a few times to let it sink in. 👌
This is a FANTASTIC video! I learned SO MUCH! thank you for making it!
This was so helpful, I wondered what all these terms were and how to apply it to riding, now I can. Good speaker too.
Great info and great way to show measurements. Helps alot when looking at a new bike for sizing or ordering a bike online. Thanks
Bravo! I've long wondered about most of this, and wasn't even aware of some of it. Fascinating stuff. And as others have said, an explanation of differences in suspension design would be most welcome too. Thanks for pulling this together.
Very informative. Thx, Doddy!
Knowledge is a weapon.
GMBN..🙌
super informative and very clearly presented, big thumbs up!
Great video, looking forward to more video’s as I am always interested in experimenting with different geometry depending on the trails / tracks that I ride both here in the U.K. and Espana!
Finally a step by step explanation. Most appreciated
Very informative. Thanks!
Brilliant explanation of mtb geometry, the best I've seen.
Thank you.
Nice accurate info my dude!!!!! Yeap, and let me just say that trail angles can change how a bike feels almost more than a frame being a little too long or short. When I raced BMX I had an XL frame, but ran with a fork that had the axle at the bottom centre of the fork tubes, not in front. So I had better stability in the frame with quick steering! Got me a trophy at Bexhill back in the day! 😎
This is really helpful, thanks. I paused a lot and took notes. About to buy a new bike and the jargon blows my mind.
Great video! Thanks for putting this one out. Looking forward to the ones coming up!
Clear simple vid doddy, great job. Clear graphics, well done to the doodler with white pen!
love that park tool set up behind you! thanks for the vids!
Thank you - excellent explanation, so clear and easy to follow.
this channel is so amazing, thx guys!!
Fantastic video, very helpful. Thank you!
GMBN has risen to the top of online MTB publications - just exceptional! Thanks!!
Really help full video thank you for explaining the confusing nomenclature easily.
Excellent video, for sure. I can't wait to see the others.
Thank you! Easy to understand and good information.
Superb Video .. Thanks a ton ..
Thanks for this, very informative, I have not measured myself up for a bike since the early 90's and things appear to have changed!
love this..Answered alot of question about modern geometry
Absolutely loved it 🤩 thank you boys!! 👊
Thanks for the useful info Doddy
Thanks Doddy, this is fantastic to know and really well explained
Phenomenal video! Thanks!
Really helpful video. Thing's became clear🎉
VERY GOOOD!!! Thumps up!
Great informative video - well explained. Thanks
Very insightful and informative video. Thank you
17:47 so actually when 29" started it was only 26 existing which usually had around 1.5inch=38mm fork offset. 29 usually had around 2inch=51mm fork offset. so then came 27.5 to split the difference in the middle and it usually had around 1.75inch=44mm fork offset.
Excellent video, cheers mate. 👍🏻
Brilliant, thanx.
Love it, well explained, lovely animations,explanations.👍👌
Great information Thank You!
GREAT info here ! Dod you rock !
Great work Doddy. Finally I have a bit of an idea what the geometry of a bike is. Thanks.
It's just diamond frame... there's one diamond. There are two triangles though.
🤣
Yip yip yip yip, uhuh, uhuh.
If you count the welds as gussets then it could be considered a double blunt ended shallow cut diamond frame. Still, these guys are very entertaining and informative. I wouldn't have looked it up had they not made the mistake :)
OK - I think I figured it out by connecting the dots. You get 5 points on the side view of a "Double Diamond"frame - front and rear hubs, headtube junction, BB, and the seattube-toptube-seatstay junction.
The 1st diamond is the one we see clearly in metal - seatstays > toptube >downtube > chainstays.
The SECOND diamond in the "double-diamond" construction includes one line that doesn't exist in metal, but is critical to modern geometry. It goes like this: seattube > toptube > FORK LEGS > "missing link".
So there's the forward-leaning obvious frame diamond, and a second rear-leaning diamond with a missing bottom line that connects the front hub and BB. What? Ok so - imagine a Penny Farthing. Huge front wheel, tiny back wheel, and no chain - the pedals are mounted directly to the front hub. You can't draw that second diamond because there's only 4 total points. Later than the penny farthing you got bikes with equal wheel sizes, but still pedals directly on the front hub - no double diamond. It was only when someone moved the pedals out with the chain drive that we got the 5th point to connect and the modern bicycle. That invisible bottom line in the 2nd diamond is what makes bikes work the way it does, with stable rear for smooth power application and power disconnected from leading-wheel steering = nimble, controllable turns.
Not good when somebody wants to teach us about geometry, but does not know the difference between a triangle and a diamond. :-(
Nice vid! Been waiting for this.
An idea for a video could be the different stresses that each part takes and has to accommodate. Maybe another one about advances in or about experimental geometry.
Thanks. That was awesome. Clear explanations of what the measurements are and how they affect the bike. Was always confused about what exactly offset and trail were.
We have an explanation of Low vs. High trail with relation to road and gravel bikes. th-cam.com/video/L0Kt-c8fG3M/w-d-xo.html
The video was very helpful, thank you.
Nice work, Doddy. Frame geometry- I especially like the explanations and name origins.
Great video, very informative, and explained a few things I didn't know, and confirmed a few I suspected.
I'd like to know some example of "average" and greater / lesser extremes of these dimensions in your next videos: what constitutes a short or long length or tight / wide angle for example.
Keep up the good work :)
Thanks for the informative video. I'm more of an urban rider than trails. But, this was very informative. Keep up the good work.
I waited so long for a video like that! Now i finally understand what it could mean if you talk about some measurements in a bike check...
Thanks, Doddy, that was the best intro to geometry I've seen. Bookmarked.
My new favorite video.. Well done folks..
Make a video about fitting the mountain bike for really tall riders. In some countries it's not easy to find frames bigger than 21", which is not enough for guys >2m tall. There's no video like that on YT, so it will be great to hear some tips how to make 21" bike feels comfortable.
PS. Another great video. Great job guys 💪
Outstanding Content, more Please!
Very comprehensive Doddy, nice one.
I knew all this, but it really made me think about how hard it is to end up with the perfect combination.
Excellent explanation. Thank you.👍
Glad you liked it!
Brilliant! Thank you!
Thank you Sir for this very informative video.
Wow perfect video congrats
My 2008 Scott Genius has a nice high BB, especially when I threw a 160mm fork on it... I love its ride now
This is the greatest informational mountain biking video ever made.
Nice video and very informativ, I´m a XC rider, but is good to know that kind of information!!......I love your show, keep up like this and please include more videos and info about XC bikes and races!!!!.....(I`m a big fan of your show)
awesome video!
Great video. Very informative 👍
Thanks!
Great video again
Just getting back in to cycling.... just found this ENGLISH channel .... FANTASTIC !.... really helpful info. really easy to understand , great presentation THANK YOU ... I just subscribed !
Great to hear Carl!
I really like the presenter, very clear and concise
Great job!
Excellent article
I came to your channel to search for orientation regarding a vintage bike called the Cannondale M800 Beast of the East. The Beast’s frame has a sloping top tube, a high bottom bracket and a very short seat tube. I guess that the next step is actually riding in one. I come from a Cannondale M400 which has a traditional top tube, with minor sloping. Later I purchased a used AMP Research B4 bike and upgraded the rear damper with Risse air and oil unit. But I never evolved to more expensive and modern bikes and long for this M800. Thanks for the clarification of the elements of the bike!
Thanks. Awesome.
Best explanation !
They should provide a range of numbers for each key geometry spec, and describe how those ranges change between riding style (XC, Trail, etc) and frame size (S, M, L, ...).
Outstanding video
This is truly excellent. I feel like Neo from the matrix when he finally realised there is no spoon!! 🥄
That's true because for half the viewers on this channel there is no bike