Katkin Posted August 26, 2009 Report Share Posted August 26, 2009 (edited) Here is the base of my new mod.It's an onza something but I don't know what.It's Ozzy's old frame if that helps.So far I have a frame a monty bottom bracket thingy and a monty bash guard (donated by my brother.Anyway what I need to know first is what gearing should I have on a mod because I havn't a clue.I have some middleburn cranks but they are 170mm which Matt says he thinks are too long.What do you think?If I need new cranks I will be having a front freewheel so can someone help me out with gearing from the cranks back.Thanks guysKat Edited August 28, 2009 by Katkin Quote Link to comment Share on other sites More sharing options...
Muel Posted August 26, 2009 Report Share Posted August 26, 2009 18:12 is standard mod gearing, with an 18t freewheel up front and a 12t fixed sprocket at the back. Quote Link to comment Share on other sites More sharing options...
Dale-Hill Posted August 26, 2009 Report Share Posted August 26, 2009 170 is fine.And 18t 12t is what most people fun and it'll work out cheaer (if you don't all ready have a rear wheel) to get a decent freewheel and fixed hub on back.Unless you have the cash for a profile or king Quote Link to comment Share on other sites More sharing options...
sstein Posted August 26, 2009 Report Share Posted August 26, 2009 170 cranks are fine Quote Link to comment Share on other sites More sharing options...
Muel Posted August 26, 2009 Report Share Posted August 26, 2009 170 is not fine, they ride like shite! My brother had a t-lite with 170 cranks, it was horrid until we put 160s on it. Quote Link to comment Share on other sites More sharing options...
Dale-Hill Posted August 26, 2009 Report Share Posted August 26, 2009 170 is not fine, they ride like shite! My brother had a t-lite with 170 cranks, it was horrid until we put 160s on it.Well, that's just down to preferance!My Adamant has 170 and there nice! Quote Link to comment Share on other sites More sharing options...
t33zr Posted August 26, 2009 Report Share Posted August 26, 2009 depends on how long feets you have... 160mm are WAY better....!! Quote Link to comment Share on other sites More sharing options...
Duncy H Posted August 26, 2009 Report Share Posted August 26, 2009 The longer cranks should make the gearing lighter, and if you use middleburns I believe you have to use a front 22t chainring meaning a 18t freewheel on the rear would be most suitable with that set up. Quote Link to comment Share on other sites More sharing options...
Sponge Posted August 26, 2009 Report Share Posted August 26, 2009 (edited) 170 is not fine, they ride like shite! My brother had a t-lite with 170 cranks, it was horrid until we put 160s on it.I totally disagree with that. 160mm cranks are too short, and don't offer enough power and leverage. 170s are fine and don't feel toooo ultra-lanky and lengthy. In fact, when you get properly used to it, you'll find you have greater stability and balance from it, as well as more leverage and power. Notice how 175s are the norm in BMX! There's just more stability overall and each pedal stroke delivers more power.Mark (OBM) used 175s on his mods, and from what he's posted in the past, it's apparent that the extra power, leverage, and stability that longer crankarms gave, were a huge benefit to his riding, more or less. That's 175s on a mod, and I still personally much preferred that over weedy 160s.170mm is the happy medium that suits all... Mod, 24, and Stock; well proven and trusted by thousands worldwide.EDIT: Also, the gearing 'feel' isn't that much affected by crank length. I mean, yes there is a bit, a tiny bit... but not to the point that it makes the gearing feel like kicking nothing. 170mm on 18:12 on a mod is perfectly fine... I think that's the most used set up for drivetrain on mods. For good reason. It also makes you focus more on technique and manipulation of the bike with the body, rather than brute power coming from the gearing that propels you. When learning stuff like pinch gaps, I strongly believe longer than 160mm is better. Edited August 26, 2009 by Sponge Quote Link to comment Share on other sites More sharing options...
Matt Vandart Posted August 26, 2009 Report Share Posted August 26, 2009 depends on how long feets you have... 160mm are WAY better....!!Her feets are wee.Maybe 170mm would be better for her until she builds up power, wadyathink?Matt Quote Link to comment Share on other sites More sharing options...
Muel Posted August 27, 2009 Report Share Posted August 27, 2009 (edited) No it'd just make it uncomfortable.if she's lacking in power, go for an 18:13 ratio. Edited August 27, 2009 by Muel Quote Link to comment Share on other sites More sharing options...
weirdoku Posted August 27, 2009 Report Share Posted August 27, 2009 170 is not fine, they ride like shite! My brother had a t-lite with 170 cranks, it was horrid until we put 160s on it.+1170mm is too long, it makes the gearing feel easier which I didn't like. I had 165mm before and couldn't put more power into my moves. As soon as I got 160mm, BAM! I got up things I couldn't the day before. Quote Link to comment Share on other sites More sharing options...
psycholist Posted August 27, 2009 Report Share Posted August 27, 2009 What crank length feels comfortable is more a function of the length of your legs than whether the bike is a mod or stock - BB heights are pretty similar in both, so it's not like the pedals are hitting the ground with long cranks. At my 5' 11" ish height 170-175mm cranks work well for XC and trials, if you're a lot shorter than that, shorter cranks are the way to go. Even though Middleburns are the best cranks ever made for trials (Based on the sheer number of front freewheel cranks I've chewed the threads out of in the past 1.5 years after using the same middleburns for 2 years before that), they're not compatible with a front freewheel, so building a mod using them will end up with you either having to run an 18T freewheel on the back (And a 27T front sprocket to get the same gear as a 18:12 on a reasonably priced hub or if you can get a 16T freewheel you can use a 24T front chainring, but unless there's a 16T ENO I'm not sure what else to trust for trials) or paying for a Chris King BMX rear hub. Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted August 27, 2009 Report Share Posted August 27, 2009 170 Middleburns on a mod will look soooooo horrific. Please don't do it. Quote Link to comment Share on other sites More sharing options...
weirdoku Posted August 27, 2009 Report Share Posted August 27, 2009 170 Middleburns on a mod will look soooooo horrific. Please don't do it.Hahaha, have you seen 175 burns on a mission prodigy? That's horrific! Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted August 27, 2009 Report Share Posted August 27, 2009 No and I don't tihnk I want to. haha Quote Link to comment Share on other sites More sharing options...
spaceman Posted August 27, 2009 Report Share Posted August 27, 2009 165 with 18:13? Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted August 27, 2009 Report Share Posted August 27, 2009 That's an ozna t-pro if im not mistaken Quote Link to comment Share on other sites More sharing options...
I am ze best Posted August 28, 2009 Report Share Posted August 28, 2009 yeah looks exactly like my t-pro(except the colour) and 170 cranks should be fine unless your quite short then you will benifit from 160mm like an original t-pro. Quote Link to comment Share on other sites More sharing options...
0zzy Posted September 2, 2009 Report Share Posted September 2, 2009 its an 06 t-pro! Quote Link to comment Share on other sites More sharing options...
Mikey Tomo Posted September 2, 2009 Report Share Posted September 2, 2009 its an 06 t-pro!Blimey you were quick. And I also think you missed the other 2-3 posts that stated this. Quote Link to comment Share on other sites More sharing options...
Rob Brodie Posted September 2, 2009 Report Share Posted September 2, 2009 at the moment im running 158 monty cranks but i dont feel i can put much power down - might just be me so im going to stick with them for now.but what i do know is that il be trying some 165 mm cranks next Quote Link to comment Share on other sites More sharing options...
Katkin Posted September 2, 2009 Author Report Share Posted September 2, 2009 Blimey you were quick. And I also think you missed the other 2-3 posts that stated this.It was his old frame-LMFAO These are the bits of my new Mod that i have so far, i also have some fancy clips, but my boyf has nicked them..b*****d !!!!! check out the pic, i am excited now WooHoo xx Click Me Quote Link to comment Share on other sites More sharing options...
Simpson Posted September 2, 2009 Report Share Posted September 2, 2009 It's an onza something but I don't know what.So far I have a frame a monty bottom bracket thingy and a monty bash guard (donated by my brother.Anyway what I need to know first is what gearing should I have on a mod because I havn't a clue.I think you should get help from a local who has experience in building bikes, before you go and try and do it yourself. Quote Link to comment Share on other sites More sharing options...
Borat Posted September 2, 2009 Report Share Posted September 2, 2009 No offense either, but you are seriously going to eat some shit, my dear. That rear freehub you got there. They are deadly, the pawls and springs are made of cheese. Quote Link to comment Share on other sites More sharing options...
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