Apu Posted February 27, 2008 Report Share Posted February 27, 2008 I was looking around on the internet at 20" mod bikes and realized how much different, in size, the forks are to standard bmx forks. They seem longer, almost the same length of an non travel-corrected mtb fork. Are they actually any bigger than standard bmx forks or is it just an illusion? If so then why are they longer? does it boost the front up higher or does it alter frame geometry? Quote Link to comment Share on other sites More sharing options...
N.Wood Posted February 27, 2008 Report Share Posted February 27, 2008 Yeah BMX forks and trials forks are completely different and are similar/the same in length as stock forks.BMX forks are usually made of steel and weigh alot more. Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted February 27, 2008 Report Share Posted February 27, 2008 a mod bike has geometry that is designed around a standard mod fork....the reason for the long forks is to have a front end height around that of a stock ( with the mahoosive stem ) so pulling the bike onto the back wheel is far easier Quote Link to comment Share on other sites More sharing options...
basher Posted February 27, 2008 Report Share Posted February 27, 2008 Yeah there completely different the forks, but im guessing the main reason is the head angle difference?You will also find that all trials bike forks are different some have longer legs some have shorter so some giving a higher or lower fornt end. Im guessing that your just starting or wanting to get into trials? at the beginner stage a bike/frames geometry won't matter much at all as you won't be able to feel the differences untill youve got all the basic skills +more. All you need to look at really is the wheelbase lenght as that controls how long the bike is, but even that measurement doesnt matter to much untill you get better and then want to find out which suits you a long or short bike. Just getting a decent bike is the main thing for a beginner i would say.You will find when you get better that chainstay lenght, bottom bracket height, wheelbase, lenght reach (bb to top of headtube), headangle all play masively in how you bike feels as a slight difference makes a difference in ride. Over time getting better and riding different frames you find out what you like and find the geo that suits you best.sorry i rambled abit just in one of them moods, hope i helped Quote Link to comment Share on other sites More sharing options...
Apu Posted February 28, 2008 Author Report Share Posted February 28, 2008 (edited) Yeah there completely different the forks, but im guessing the main reason is the head angle difference?You will also find that all trials bike forks are different some have longer legs some have shorter so some giving a higher or lower fornt end. Im guessing that your just starting or wanting to get into trials? at the beginner stage a bike/frames geometry won't matter much at all as you won't be able to feel the differences untill youve got all the basic skills +more. All you need to look at really is the wheelbase lenght as that controls how long the bike is, but even that measurement doesnt matter to much untill you get better and then want to find out which suits you a long or short bike. Just getting a decent bike is the main thing for a beginner i would say.You will find when you get better that chainstay lenght, bottom bracket height, wheelbase, lenght reach (bb to top of headtube), headangle all play masively in how you bike feels as a slight difference makes a difference in ride. Over time getting better and riding different frames you find out what you like and find the geo that suits you best.sorry i rambled abit just in one of them moods, hope i helpedOk thanks. I can tell a differnce in geometry from riding mountain bikes and bmx's over the past 16 yrs. The geometry does vary a lot from chainstay length to Q factor on the cranks. head angle doesn't bother me so much but steeper would be nicer.Because I am new to trials (and very bad at lifting my bike off the ground) I am going to build myself a bike small enough to thorw around easier than my current mountain bike. I chose to do this as an excuse to develop my welding skills and recycle my old mtb and bmx parts I have laying around. And yes the frame will be steel.I first wanted to get into trials when I had a little 12 inch kids bike with pushed foward handle bars. My friend broke the seat rail clamp so I removed the post etc. and cut the seat post tube down to top tube height. I found this a really solid little bike with excellent frame geometry but I gave up riding this because the tubes would always blow from having loose spokes and rather buckled rims.I think I am in one of those moods too, I love talking "bikes" and anything bike related. I am just an enthusiast, not a pro rider and like building my own bikes, not buying already assembled bike. Building a bike from scrap parts laying around will get me track standing and bunny hopping/side hopping away and then I will move up if I still have the patience and enjoyment for the sport. Edited February 28, 2008 by Apu Quote Link to comment Share on other sites More sharing options...
Apu Posted March 3, 2008 Author Report Share Posted March 3, 2008 If they made those little bike's wheels just a little stronger then I say we have a freak class of trials bikes. Maybe some of those skyway tuffs in 12 inch form would do the job. but then what about weight? oh well, back to the drawing board for me. Quote Link to comment Share on other sites More sharing options...
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