Discovering Rad unlocked my mtb potential. This trend for oversizing had me on bikes that were way too big for me.
@OldAZMountainBikerInMA2 жыл бұрын
I hope you checked out Joy of Bikes video with Mike Lee. I agree, once you understand how the system (Bike and Rider) were intended to operate, it makes a world of difference. The problem with these super long (and usually stable) bikes is that it allows us to think we are better than we are. As soon as we exceed the bikes natural abilities, we crash and it can be horrifical given what it takes to overwhelm a modern trail bike. Now I feel more confident that I am a rider and not a passenger!
@joseherrera7082 жыл бұрын
Old az MTBiker here too from México, awesome video. In that video from Joy of Bike, they say that you take your height in my case 186 cm, and multiply it by 2.5 = 465. If I multiply 465 times 2 it's 930. I then measured my RAD by the means shown in this video and the measurement was 93 cm = 930 mm. I don't know if this applies to all people but I found it awesome. They also mentioned that you take the reach of the bike's geometry to better know if the frame is going to fit, my current bike has a reach of 450 and the fit is perfect.
@OldAZMountainBikerInMA2 жыл бұрын
This is me taking the Joy of Bike video and putting it to practice. I will have to try the math. I am 188CM on a bike with a reach of 489.
@richardradcliffe60472 жыл бұрын
I think that’s pure coincidence. For example, in my case: h=189, 189*2.5=472, 472*2=944. But my RAD comes in at about 870. And this is a good example of why reach is a very gross estimate of proper bike size - people’s relative arm length, torso length, leg length, and height are all over the place. The measured reach gets you in the balllpark. Other parameters can be fine tuned to get your desired RAD, mostly sweep, stem length, and stem height. What you really want is effective reach which takes those things into account. My current bike has a published reach of 500 mm, a fair bit longer than the 2.5 value suggested by Lee McCormack. I haven’t tweaked the original handlebar setup too much and the effective reach comes in at 477. Darn close to the 2.5 thing. And the calculated (and measured) RAD of that setup is just about perfect: 873. Note that the 2.5 calculation also is a gross estimate due to anatomical variation. In my case it happened to be pretty close. BTW, if you know the geometry of a bike, you can plug it into the geometry calculator found on this website madscientistmtb.com to get the calculated RAD and effective reach. You can also play around with the parameters to find your desired RAD.
@jivkostoianov3607 Жыл бұрын
@@richardradcliffe6047 Why everybody talks only about the reach. Also the frame stack comes into account to the RAD of the bike. Why no one talks about the stack?
@erikd6124 Жыл бұрын
Is your bike a FS or HT? big factor. HTs get longer and FS shorter when saged
@erikd6124 Жыл бұрын
@@jivkostoianov3607stack is easier to adjust then reach.
@StretchAus Жыл бұрын
if you are at rad neutral and want to try rad minus you can put some of the stem spacers above the stem to lower the bars a little more into the rad minus area
@OldAZMountainBikerInMA Жыл бұрын
Good call out.
@geopietro3 жыл бұрын
Good video. Nice to see the implementation of Joy of Bike's recommendation.
@OldAZMountainBikerInMA3 жыл бұрын
That series is awesome for the new rider.
@gobikeyourself2 жыл бұрын
Great video! I will give this a try for my current bike, to adapt my fit and of course it will then lead my decision on my new bike!
@OldAZMountainBikerInMA2 жыл бұрын
I hope you check out Joy of Bike - They do a much better job than I did if you going to size your next ride. They also have a video about bar width that's cool.
@CasperRc812 жыл бұрын
Nose that saddle down towards the top tube. Somewhat crunch into your handle bars lean forward try to have your posture and pedaling ahead of your bottom bracket spindle has you were listen for the gun in track n field before your take off. Cool bike
@OldAZMountainBikerInMA2 жыл бұрын
I discovered this technique when I shortened my stem. I went from a 50MM -> 35MM and my first hill climb had me way back and my front wheel lifting. So I sort of kept my legs straight with my arms right over them and my wrist cocked way back to keep me over the front wheel. Thanks for the comment.
@JeffRevell3 жыл бұрын
I believe I saw a video on GMBN where the rider was using an e-bike saddle for his ride instead of a standard saddle. E-bike saddles tend to have a raised lip in the back, which might make you feel less like you are slipping off the saddle on climbs. Ergon makes a whole bunch of e-bike saddles that you can look at to see what they look like. Cheers
@OldAZMountainBikerInMA3 жыл бұрын
Thanks for the feedback!
@OldAZMountainBikerInMA3 жыл бұрын
I have been practicing sliding into the nose of the seat on steeper climbs. This keeps the front when down, and I don't feel like I am sliding off as I am in control of where I am on the seat itself.
@menemismix3 жыл бұрын
Thanks! This gives me more reassurance going with fezzari. I was also worried about my RAD after watching the same video you mentioned.
@OldAZMountainBikerInMA3 жыл бұрын
Going with Fezzari is not something I regret. Best bike for the money period.
@menemismix3 жыл бұрын
@@OldAZMountainBikerInMA sweet! That’s music to my ears
@yengsabio53153 жыл бұрын
@@menemismix Going to acquire a Fezzari Solitude?
@menemismix3 жыл бұрын
@@yengsabio5315 i just got my delano peak last week
@menemismix3 жыл бұрын
@@yengsabio5315 also btw, I did the same test, and its spot on
@ianfleischhacker61543 жыл бұрын
Good video: concise with the pertinent details to make it complete.
@OldAZMountainBikerInMA3 жыл бұрын
Thank You! I am enjoying making the videos, so I really appreciate the feedback.
@AshLimMTB3 жыл бұрын
Thanks for another great video. Much appreciated.
@OldAZMountainBikerInMA3 жыл бұрын
Glad you enjoyed it
@AshLimMTB3 жыл бұрын
@@OldAZMountainBikerInMA 🙌
@jasonstaub30452 жыл бұрын
Ty Todd! Im 6ft 195 lean build bought a bike based on sizing chart and after seeing this its too big! $4k later i have to figure out how to get few inches of slack out now 🤦♂️☹️!
@OldAZMountainBikerInMA2 жыл бұрын
I am sorry to hear that. A few things I did was shorten the stem, and you could consider shortening the crank length (But I am not sure what that would do to peddling efficiency). If you roll the bars towards you, that will also shorten the RAD a little.
@JasonClute3 жыл бұрын
Thanks for making this! The youtube robots shuffled the Joy of Bike video in my feed and I really enjoyed it and thought it made a lot of sense so of course that led me to your video. I've been mountain biking for about 6 years and just recently bought my first full suspension. I am still fine tuning and fitting it to me. One of the things I wanted to do was to rotate the handlebars so they got closer to my rad. Glad to see that it worked for you. I wanted to get your opinion on something. If you are not jumping, not doing manuals, crazy downhill, stuff like that, does the rad number matter as much? I kind of got the impression from the Joy vid that getting the bike in your ideal rad mattered more when you needed that power when doing things like that. I live on the east coast and most my local trails are quick climbs, quick decents, some rocks and root gardens but nothing crazy, and very little jumps
@OldAZMountainBikerInMA3 жыл бұрын
Let me start by saying, I have been riding like 6 Months. With that said, I currently live in Phoenix and we have some nice downhill runs, and a lot of technical trails on and around South Mountain. So I appreciate the extra control. When I first started riding and I did strictly XC stuff, I was more comfortable stretched out a little. The channel is moving to Western MA this summer, and I am looking forward to seeing the different riding terrain.
@acuhealer623 жыл бұрын
I think knowing your RAD is important regardless. A properly fitted bike gives you options. It just handles better all around. If you are not a jumper or someone who manuals/wheelies etc you can go slightly RAD plus. If you're someone who likes jumps and quicker handling you can go RAD minus. Too many people buying bikes (especially on line from YT and other direct to consumer retailers) buy the wrong size. RAD just gives you a concrete starting point. I've been riding over 35 years and I ride in New England. My new bike fits my RAD number spot on. It handles the the punchy climbs and twisty, rocky, rooty NE terrain very well. Best fitting bike I've ever had.
@lynxg46413 жыл бұрын
Since you say you are a "new" mountain biker, do you have the back of the saddle, where you sit level or is it tilted down or up in any way. Far as I can tell that's the WTB Silverado, I had one of them, was not a fan, got a WTB PureV (now known only as the Pure) and have been happy with it for the last 13 years. Have recommended it to loads of other riders who have also been happy with it. Maybe give that saddle a look as it has a bit of a "whale tail" to it and definitely a bit more padding. Also, yeah, don't rotate your bars too much to adjust cockpit fit, get a shorter or longer stem and slightly tweak the bar to get it perfect - the back and up sweep really does help to put your hands in a much better and more natural position and helps relief wrist pain
@OldAZMountainBikerInMA3 жыл бұрын
Yes, it is the Silverado. The seat is the next thing I will upgrade on the bike. Thanks for the suggestion.
@johnparrish3363 жыл бұрын
👍🏻 Thanks for posting.
@OldAZMountainBikerInMA3 жыл бұрын
You bet
@iruoysacul3 жыл бұрын
Like yours my rad is 860 mm and my curent bike rad is around 830\840. I rotate my handlbar to suite my style of riding and confort by ride test with small increment... Well, when you test you don't guess! You feel it when it's right. The rope thing is realy handy when you go buy a bike or test at a bike show... the rope thing doesn't lie! cheers mate
@OldAZMountainBikerInMA3 жыл бұрын
Right on
@moto_rad3 жыл бұрын
CM are not more accurate. If anything, with a tape measure inches are more precise of a measure. 1/32nd of an inch, the smallest mark on a good tape measure, is 30% more precise of an incremant than a mm
@kshred30433 жыл бұрын
Well, he was contrasting cm virus inches not mm vs 1/32". That said, My 25', Made in USA, 25', Power Lock II, tape measure is marked in 1/16" increments. Each increment is 1.73 mm. Therefore, that particular tape measure, which I suspect is quite common in the US, would be less precise (by a factor of 42% or 73% depending on which way you define it) than a typical 1 mm increment metric tape measure. FWIW, I agree that the 'precision' (AKA 'measurement variability' or 'quantization noise') is the correct terminology to use in this discussion. 'Accuracy' has to do with calibration (or 'bias'), ie: does the tape measure indicate 86.0 cm when the object is exactly 86.0 cm long ? I would be more concerned with the amount of stretch of the string, which will likely far exceed 1/32 mm over a distance of 86 cm. However, such nit pickingentirelybecausebecause
@moto_rad3 жыл бұрын
@@kshred3043 that is interestig. My power lock 16' measure I use at work is marked in 1/32nds. Maybe odd part number variations
@damianpoland51103 жыл бұрын
Thank for your advise. :)
@OldAZMountainBikerInMA3 жыл бұрын
My Pleasure - Be sure to check out Joy of Bike to see their advice too.
@LarryRichelli3 жыл бұрын
I have done this but it seems like having the seat more forward or back would affect our bike fit also but this tecneque does not take that into consideration. I can see your seat does not have a lot of forward and back room but mine has like three inches of movement.
@OldAZMountainBikerInMA3 жыл бұрын
That's true, but the goal is to impact the feel when you're not in the seat. The reach is more about climbing vs. DH as I understand it. That was why I mentioned with the RAD set, I felt like I would slide of the back of the seat. I can now set that and still keep my pedal to handlebar distance.
@philobresil6152 Жыл бұрын
centimetres are not more acurate than inchs, they are just a diferent scale. both system work if u can read 1/8 inch....
@OldAZMountainBikerInMA Жыл бұрын
Accurate as in smaller increments, but fundamentally you are correct.
@devinbyrnes80583 жыл бұрын
Have you tried tilting the seat forward to help you stay in the saddle more while you climb? Until you get a new saddle, it may be a quick fix.
@OldAZMountainBikerInMA3 жыл бұрын
Actually, I've learned to slide my weight to the nose of the seat. I also just shortened my stem and increased the Rise on my bars. We will see how she climbs this weekend.
@devinbyrnes80583 жыл бұрын
@@OldAZMountainBikerInMA Let me know! I was constantly looping out so I lowered the spacers on the stem. I thought higher rise would increase looping out. Let me know, this is only my 2nd season on singletrack and I am just figuring things out.
@OldAZMountainBikerInMA3 жыл бұрын
@@devinbyrnes8058 I currently live in AZ, so we don't have seasons, we ride year round. I've been riding a little over 9 months. So when climbing steep inclines, what I did first was slide my weight to the nose as I mentioned. That almost immediately stopped the looping out. I also felt like I was more over my pedals. The shortening of the stem and increasing the rise is strictly because my back is old and sore these days.
@rickflippin1 Жыл бұрын
Dude excellent no you made it clear subbed so dang fast thanks
@OldAZMountainBikerInMA Жыл бұрын
Thanks for the feedback. Keep Shredding!
@jaydajediful3 жыл бұрын
Find an ebike seat that has a lip on the back that should help
@OldAZMountainBikerInMA3 жыл бұрын
Interesting, I didn't know seats had that.
@jaydajediful3 жыл бұрын
Newer ones do cause some of the climbs we can make are so steep!
@foreststatham11845 ай бұрын
So with the laydown on your back bike for test, if bars are closer to chest does and arms not fully extended does this mean bike is too big or too small?
@OldAZMountainBikerInMA5 ай бұрын
Too long. Consider a shorter stem, or low rise bars.
@mattroland5943 Жыл бұрын
Yet another theory to make you wonder if you are on the right bike. I find that owning 5 bikes, all set up differently (RSD, reach, barwidth, etc....) works best. Then I can match bike with trail and riding conditions. Oh crap...forgot about tires!
@OldAZMountainBikerInMA Жыл бұрын
I agree. I found that this technique didn't tell me I was or wasn't on the right bike, but more so how I could make it fit me better. Shorten the stem, more sweep on the bars, maybe longer/shorter cranks.
@hannes61142 жыл бұрын
My bike has 460 reach with a 35 mm short stem, 35 mm rise bars and quite low stack - shouldn't be way too big, right?
@OldAZMountainBikerInMA2 жыл бұрын
How tall are you? What's your knuckle height? Did you measure from your pedals to the center of your handlebars?
@hannes61142 жыл бұрын
175 cm - but I'm sure if fits me, was an unnecessary question :)
@Everyday-man Жыл бұрын
Rad is all find and dandy in theory, but how can you use rad when buying online
@AntonioSanchez-op8bu Жыл бұрын
Gonna have to do some math. I just did it for myself. You need to add bottom tube length + stem length + bar rise. Bottom tube length = square root of (stack × stack) + (reach × reach). This will get you within a couple centimeters. You can geek out even further and factor in stem angle and bar sweep, but this are usually pretty small angles, and don't change much. That's why it gets you within a couple centimeters. That can be adjusted for sfter purchase by swapping out stems, or adjusting bars slightly.
@kylemartinez79493 жыл бұрын
Out of curiosity, what size Cascade Peak did they put you on?
@OldAZMountainBikerInMA3 жыл бұрын
XL - I am 6'2"
@ntesla1002 жыл бұрын
Shoes on or off?
@OldAZMountainBikerInMA2 жыл бұрын
Shoes on, and preferably the shoes you wear.
@networkwithmax70963 жыл бұрын
What’s your height? Is your bike a L or XL?
@OldAZMountainBikerInMA3 жыл бұрын
6'2" and an XL
@pauldunn99943 жыл бұрын
Is your freezer up on a step?
@OldAZMountainBikerInMA3 жыл бұрын
Lol, it is.
@pauldunn99943 жыл бұрын
@@OldAZMountainBikerInMA I thought I could see one, so not to state the obvious but you couldn’t see in the video, you did measure right to the floor and not just the step with the fridge on? Lol
@OldAZMountainBikerInMA3 жыл бұрын
@@pauldunn9994 I did measure from the floor and not the step.