Dan6061 Posted July 18, 2007 Report Share Posted July 18, 2007 I reckon you should make a sealed one aswell.Although I like the caged bearings, much better than ACS's loose bearings. - Made servicing mine a right bitch way back when... Quote Link to comment Share on other sites More sharing options...
Rhys Bradford Posted July 23, 2007 Report Share Posted July 23, 2007 That 22t one looks crazy GREAT Quote Link to comment Share on other sites More sharing options...
basher Posted July 23, 2007 Report Share Posted July 23, 2007 Surely for the 22t model you could have used the extra size to make a better freewheel by using bigger/more pawls and deeper ratchets rather than just ordering a larger plate on the current one which looks ridiculous. Nice idea though having different sizesNo because if you had it bigger and had the same amount of grooves in the rachet you would end up with deeper ones but also it would take more of a crank turn to it engage. So you would have to have more grooves in the rachet to make up for it but then you would loose the advantage of the deeper rachet ring. Quote Link to comment Share on other sites More sharing options...
26inch Posted July 23, 2007 Report Share Posted July 23, 2007 No because if you had it bigger and had the same amount of grooves in the rachet you would end up with deeper ones but also it would take more of a crank turn to it engage. So you would have to have more grooves in the rachet to make up for it but then you would loose the advantage of the deeper rachet ring.No matter how far out on the radius of the sprocket the rachet is positioned aslong as there are the same amount of rachets the crank would have to turn the same distance because the angle the crank turns though = 360 divided by no. of engagements Quote Link to comment Share on other sites More sharing options...
Mike Poyzer @ Onza Posted July 24, 2007 Author Report Share Posted July 24, 2007 Developing this freewheel took a lot of time and funds trying different ideas. Once the configuration was decided we invested a lot more money on tooling for pawls, springs and toothed rings for production. Producing a 22 tooth and a 16 tooth are speculative ventures to a large extent and to have designed and developed different internals to those of the 18 tooth would have tripled the development costs. Since we felt that the 18 tooth was our optimum, it made sense to use the same internals on other sizes. Therefore the only change required was the outer toothed sprocket. It was a case of either having other sizes with the same internals or not having other sizes at all. Quote Link to comment Share on other sites More sharing options...
26inch Posted July 25, 2007 Report Share Posted July 25, 2007 Fair enough. I had a feeling cost maybe the problem Quote Link to comment Share on other sites More sharing options...
Muel Posted July 31, 2007 Report Share Posted July 31, 2007 Mine has now been running for 8 months or hard riding and it hasn't skipped yet.It has never caused me to take the crank off. Quote Link to comment Share on other sites More sharing options...
Bigman Posted January 4, 2008 Report Share Posted January 4, 2008 When can we be expecting the 16t freewheels to be released?Adam Quote Link to comment Share on other sites More sharing options...
Muel Posted January 4, 2008 Report Share Posted January 4, 2008 A year and a month nearly now, skipped twice in the last month or so. Quote Link to comment Share on other sites More sharing options...
Maximus Posted January 4, 2008 Report Share Posted January 4, 2008 A year and a month nearly now, skipped twice in the last month or so.yeah same damm good Freewheel Quote Link to comment Share on other sites More sharing options...
mafu26 Posted January 6, 2008 Report Share Posted January 6, 2008 No matter how far out on the radius of the sprocket the rachet is positioned aslong as there are the same amount of rachets the crank would have to turn the same distance because the angle the crank turns though = 360 divided by no. of engagementsi don't think thats completely correct... if you increase the size of the radius of the ratchet and still keep the same amount of teeth the distance between each tooth will increase. so that means you will have to move the crank further for it to engage. i think i'm right by saying if you double the radius if the ratchet you would have to double the amount of teeth for the crank to move the same distance on the orginal ratchet for it to engage. thats why its more accurate to use radians rather than degrees because radians is a measure of radius over angle swept. i might be taking complete rubbish though so feel free to prove me wrong. Quote Link to comment Share on other sites More sharing options...
Muel Posted January 6, 2008 Report Share Posted January 6, 2008 i don't think thats completely correct... if you increase the size of the radius of the ratchet and still keep the same amount of teeth the distance between each tooth will increase. so that means you will have to move the crank further for it to engage. i think i'm right by saying if you double the radius if the ratchet you would have to double the amount of teeth for the crank to move the same distance on the orginal ratchet for it to engage. thats why its more accurate to use radians rather than degrees because radians is a measure of radius over angle swept. i might be taking complete rubbish though so feel free to prove me wrong.No it doesn't, if you increase the rachet, thus increasing the tooth size, it doesn't make any difference to how far you move the crank arm, because the crank arm rotates, so you move it through 360/36= 10 degrees for every engagement.The freewheel itself can be any size, because it engages 36 times per rotation. Quote Link to comment Share on other sites More sharing options...
mafu26 Posted January 6, 2008 Report Share Posted January 6, 2008 (edited) ok i've drawn a pic to show what i mean. if you look at the blue teeth on the inside of the ratchet (8 for simplicity) and there's a black line, a indicating how far the pawl has to travel along the ratchet tooth before it engages again. each freewheel has the same number teeth inside the ratchet but if you can see the bigger one has to travel further for it to engage. do you see what i mean? Edited January 6, 2008 by mafu26 Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted January 6, 2008 Report Share Posted January 6, 2008 it does have to travel further in actual distance, but its the same in degrees. Quote Link to comment Share on other sites More sharing options...
boon racoon Posted January 6, 2008 Report Share Posted January 6, 2008 ok i've drawn a pic to show what i mean. if you look at the blue teeth on the inside of the ratchet (8 for simplicity) and there's a black line, a indicating how far the pawl has to travel along the ratchet tooth before it engages again. each freewheel has the same number teeth inside the ratchet but if you can see the bigger one has to travel further for it to engage. do you see what i mean?mat's designing a wheelchair that's capable of taking steven hawking to the top of a mountain. he knows his shit. Quote Link to comment Share on other sites More sharing options...
toxicturky Posted January 6, 2008 Report Share Posted January 6, 2008 (edited) yeah, as far as your foots concerned at the end of the crank arm, it doesnt make any difference, the smaller diameter ratchet would surely need to be stronger 'cos it's got more leverage on the teeth?providing both large and small ratchets have the same number of engagements yada yada yada Edited January 6, 2008 by toxicturky Quote Link to comment Share on other sites More sharing options...
mafu26 Posted January 7, 2008 Report Share Posted January 7, 2008 ahhh. i give up Quote Link to comment Share on other sites More sharing options...
Adam-Griffin Posted January 7, 2008 Report Share Posted January 7, 2008 16T Freewheel=Sexy time Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted January 7, 2008 Report Share Posted January 7, 2008 Black arrow = crank arm.If you go from Position A to position B you get 1, 2, 3 clicks on both ratchets. Quote Link to comment Share on other sites More sharing options...
Tomm Posted January 7, 2008 Report Share Posted January 7, 2008 I'm with Adam on this one. Quote Link to comment Share on other sites More sharing options...
mafu26 Posted January 7, 2008 Report Share Posted January 7, 2008 (edited) urg i dunno. confused now good bit of banter thoughedit: yeah i'm talking rubbish. think i'm confusing it with if your crank arm was longer then you'd have to move your leg more...? Edited January 7, 2008 by mafu26 Quote Link to comment Share on other sites More sharing options...
Dan6061 Posted January 9, 2008 Report Share Posted January 9, 2008 I see your theory...but Adam's right. Quote Link to comment Share on other sites More sharing options...
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