Herbertlemon102 Posted November 1, 2014 Report Share Posted November 1, 2014 So I've just received my engineering scholarship and sponsor from Warwick university, and with it comes £300 a year to spend on "engineering related studies" (even though they have no way of checking what I spend it on) so I thought I'd build a mod frame. Onza tpro has already given some amazing ideas, as I just moved this from chit chat, but I'd like some ideas and inspiration for aesthetics and function. I have free reign over what I can do. Things like the disc mount being inbetween the two stays, etc. I'd just like to hear peoples ideas , I'm really looking forward to this and want to include a bunch if features!"You could try magura mounts on the chainstay or underside of the seatstay? It may not be 100% efficient, but it would look hella cool you could also put the disc mount in the gap between the gap between the chainstay and seatstay rather than on top of it... It should have a sprung tensioner, but on top of the chainstay rather than hanging below so you can't bash it, but you retain the auto-tensioning, set and forget functionality Integrated seat, like an ashton? Definitely 135mm rear spacing so you can run a hope hub! You could play around with tubing profiles and materials to prevent denting downtubes and retaining strength elsewhere I guess... How about having the head bearings seat straight into the headtube? Bolt through axles? " ---here are some idea from the chit chat post Quote Link to comment Share on other sites More sharing options...
weirdoku Posted November 1, 2014 Report Share Posted November 1, 2014 Putting magura mounts on the chainstay will get in the way of the chain no? Disc mount between the seat/chainstay already exist. Putting the tensioner mount on the top of the chainstay, what current tensioner fits that way? Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted November 1, 2014 Report Share Posted November 1, 2014 i think you could build it for an adult wheelsize,24 or something nah, joking,just liked to add that theres no way for a disc brake between the stays other than having a bent seatstay,which looks plain weird looking forward to seeing this happen. Quote Link to comment Share on other sites More sharing options...
onzatpro09 Posted November 1, 2014 Report Share Posted November 1, 2014 This is by no means a masterpiece, only a visual representation of my previous post It is also nowhere near to scale nor close to pretty as of yet Please ignore the integrated rotor protector too, I'm not too keen on it. And Herb, please don't post any of your sketches because you'll make my drawing look even worse than it already does Quote Link to comment Share on other sites More sharing options...
ZArgrave Posted November 1, 2014 Report Share Posted November 1, 2014 A chain tensioner surely wouldn't really work on the top? That sides already tensioned by your legs and would just fold into its straight position every time you kick :/ 4 Quote Link to comment Share on other sites More sharing options...
Herbertlemon102 Posted November 1, 2014 Author Report Share Posted November 1, 2014 And Herb, please don't post any of your sketches because you'll make my drawing look even worse than it already does now I'm tempted to get out my pen do you know what would be interesting? Fitting it with an EBB- eccentric bottom bracket, where the bb is not centered, and you tighten the chain by adjusting the BBs position. Carbon belt drive bikes have them often. 2 Quote Link to comment Share on other sites More sharing options...
Disc.Jokie. Posted November 2, 2014 Report Share Posted November 2, 2014 i think you could build it for an adult wheelsize,24 or something nah, joking,just liked to add that theres no way for a disc brake between the stays other than having a bent seatstay,which looks plain weird looking forward to seeing this happen. i think it was koxx who did it on a mod but whoever it was it looked really good Quote Link to comment Share on other sites More sharing options...
FamilyBiker Posted November 2, 2014 Report Share Posted November 2, 2014 op might want to use bikecad.ca for his geo experiments.use it on an everyday base and its awesome Quote Link to comment Share on other sites More sharing options...
bing Posted November 2, 2014 Report Share Posted November 2, 2014 Koxx did it. Ashton did it on the streety 24". Boardman do it on most of there hardtails. It's not a new idea Quote Link to comment Share on other sites More sharing options...
Mark W Posted November 2, 2014 Report Share Posted November 2, 2014 From the Brisa B26D: Quote Link to comment Share on other sites More sharing options...
N.Wood Posted November 2, 2014 Report Share Posted November 2, 2014 (If you don't know what a Brisa is, it was probably built before you were born) 2 Quote Link to comment Share on other sites More sharing options...
Disc.Jokie. Posted November 2, 2014 Report Share Posted November 2, 2014 if you want an obscure id go for a different geometry, somthing that hasn't been done much or at all so something like a 125 bb 375 chainstay 74 ha Quote Link to comment Share on other sites More sharing options...
bing Posted November 2, 2014 Report Share Posted November 2, 2014 Dez's jaf 24 was pretty obscure, +100bb or summat like that Quote Link to comment Share on other sites More sharing options...
Herbertlemon102 Posted November 3, 2014 Author Report Share Posted November 3, 2014 A high bb sounds interesting, my limey can't be more than +60 so it would be interesting to try one... Quote Link to comment Share on other sites More sharing options...
dann2707 Posted November 3, 2014 Report Share Posted November 3, 2014 (edited) A high bb sounds interesting, my limey can't be more than +60 so it would be interesting to try one... Think it's +75bb matey, or +70 Sorry it's not +75 it's 70! Edited November 3, 2014 by dann2707 Quote Link to comment Share on other sites More sharing options...
Herbertlemon102 Posted November 3, 2014 Author Report Share Posted November 3, 2014 Think it's +75bb matey, or +70 Sorry it's not +75 it's 70! really? Feels lower haha Quote Link to comment Share on other sites More sharing options...
J.KYDD Posted November 3, 2014 Report Share Posted November 3, 2014 A top mounted chain tensioner will not work Quote Link to comment Share on other sites More sharing options...
Herbertlemon102 Posted November 3, 2014 Author Report Share Posted November 3, 2014 A top mounted chain tensioner will not work yeah I'm aware. Quote Link to comment Share on other sites More sharing options...
Herbertlemon102 Posted November 3, 2014 Author Report Share Posted November 3, 2014 First idea- I have no idea what's acceptable geo wise, but here's what they are- Wb: 1000mm Chainstay: 340mm Bb: +100mm <---(going mad) Reach: (measured from top of seat post/tube to headtube) 540mm Head angle of 70 degrees/ or 120 depending which was you measure it from, it's 20 degrees from vertical. I've put the disc mount inbetween the two stays, measured to fit my Deore. Quote Link to comment Share on other sites More sharing options...
MartMini Posted November 3, 2014 Report Share Posted November 3, 2014 i hate the 'curved downtube' design. a straight downtube will be lighter, simplier, stronger, and surely wouldnt hinder clearance that much? Quote Link to comment Share on other sites More sharing options...
J.KYDD Posted November 3, 2014 Report Share Posted November 3, 2014 Don't think the CS can be less than 350mm on a mod? If you were going +100 on the BB, I'd go for 360mm Quote Link to comment Share on other sites More sharing options...
craigjames Posted November 3, 2014 Report Share Posted November 3, 2014 First idea- I have no idea what's acceptable geo wise, but here's what they are- Wb: 1000mmChainstay: 340mm Bb: +100mm <---(going mad)Reach: (measured from top of seat post/tube to headtube) 540mmHead angle of 70 degrees/ or 120 depending which was you measure it from, it's 20 degrees from vertical. I've put the disc mount inbetween the two stays, measured to fit my Deore. As said, crazy short stays might not be feasible, certainly will feel pretty nasty/odd with such a high BB. Reach is measure from the centre of the BB to top centre of the headtube, what you've measure there is the reach. What figure do you come out with when measuring the actual reach? Why such a slack head angle? Was this to achieve the desired wheelbase? Quote Link to comment Share on other sites More sharing options...
Herbertlemon102 Posted November 3, 2014 Author Report Share Posted November 3, 2014 As said, crazy short stays might not be feasible, certainly will feel pretty nasty/odd with such a high BB. Reach is measure from the centre of the BB to top centre of the headtube, what you've measure there is the reach. What figure do you come out with when measuring the actual reach? Why such a slack head angle? Was this to achieve the desired wheelbase? who even knows, I've just looked at it again and laughed. Quote Link to comment Share on other sites More sharing options...
Disc.Jokie. Posted November 3, 2014 Report Share Posted November 3, 2014 needs a longer wheelbase with that high bb, and chainsaty likwise, id say over 1020 wb and over 360cs also head angle needs to be 72 or 73 Quote Link to comment Share on other sites More sharing options...
dk2 Posted November 4, 2014 Report Share Posted November 4, 2014 hi On my list some internal alu tubes with 6m threads in the ends (one in the headtube and one near the rear brake mount..No more brake hose hanging around....) Just a clean internal hydraulic tube. not sure what wall thickness one would need to handle the pressure...Same goes with the fork..and let it mount in the top of the fork with a banjo bolt... /stefan have a nice day 1 Quote Link to comment Share on other sites More sharing options...
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