87sheerips Posted October 8, 2015 Report Share Posted October 8, 2015 Corg I can produce your designs in production runs when you get to that point and pay you for them. Food for thought. 1 Quote Link to comment Share on other sites More sharing options...
wayne_smith97 Posted October 8, 2015 Report Share Posted October 8, 2015 Where do you work? Sorry for my bad english, i'm a french Cannuck! Toyota Boshoku Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted October 8, 2015 Author Report Share Posted October 8, 2015 Anyway guys, i really dont pretend to reinvent the wheel but i would like to have any inputs on any design i try. Now, it's the shifting star, if any of you have an idea about an improvment, just voice it, we will discuss it, i'm really open and if we put our brain together, maybe we can improve some parts. Like i said, im a tranny noob, i wonder how munch stress the star is under and if it can be made in aluminium, 6061(45k psi) or 7075(84k psi) vs 4140 steel (95k psi) Sorry for my bad english, i'm a french Cannuck! Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted October 8, 2015 Report Share Posted October 8, 2015 The only part under stress is the pins. Make them longer too. Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted October 8, 2015 Author Report Share Posted October 8, 2015 The only part under stress is the pins. Make them longer too. The eom one are too short? I saw that mull engineering lenghten them. if one pin break, what's the case scenario? Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted October 8, 2015 Report Share Posted October 8, 2015 Make that bitch from delrin! Less weight! Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted October 8, 2015 Author Report Share Posted October 8, 2015 (edited) Make that bitch from delrin! Less weight! At about 11k psi, do you think the pins will hold under stress? Edited October 8, 2015 by Corgster Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted October 8, 2015 Report Share Posted October 8, 2015 You should really call mull and talk with him , he seems to know a lot about all the oem metal composition. He's walked me through heat treating and annealing peices for my crank press . He's a wealth of knowledge. I would be interested in tranny drums themselves with gallows cut for override without welding and shotty machining. Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted October 8, 2015 Author Report Share Posted October 8, 2015 I'm pretty set on 4145, wich i can make as hard/soft as i want. Just asking for any new idea. Fast4You suggested Derlin but i think it's too weak. Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted October 8, 2015 Author Report Share Posted October 8, 2015 make it from Ti. Grade 5 FTW.I wash i had some Ti by hand! Quote Link to comment Share on other sites More sharing options...
camatv Posted October 8, 2015 Report Share Posted October 8, 2015 shift star pins are a smidge short. the shaft is the real issue. its made of weak steel plate and flexes when being shifted. if the shaft is riding on the edges of the pins due to shit installation and/ or wear on the spacers and the cover as to allow the shaft to move back and forth in the case it makes it even worse.. when shifting they slide off the pins and miss a shift. OR the trans is bound and that happens also. a ratchet shift conversion would be the ultimate. an already ready to go override drum would be a great idear. shift star with correct placement of pin's and cuts for the1-5 n down and 6 speed N down would be great. case hardened gears with the angles already done on them would be killer also. the costs of all of this would be astronomical i'm sure. if the drum could be setup in a 1-5 combo and a 1-6 combo that would be nice. if it would cost less than 100 bucks with a star i think they would sell well. getting a good pattern for the override would be the tricky part. there are a ton of total shit verisons of setting N in place and ratcheting or clattering while in neutral or moving without running are common with those. i have a bulletproof pattern for the 1-5 n down that works much better than any other version i have used. but i'm not going to just publicly put it on here. . it would not have to be solid i have developed a 3 piece design that i think could be done relativley reasonable on costs. i just have no access to a cnc that can do it. billet basket like the HINSON straight cut spring loaded would be nice. 4 bolt 5/16 or 8mm bolts using spring cusion ?> idle gear with actual bearing that fits stock input shaft would be nice.. ( i have already done) clutch basket with bearing support instead of a bushing would be nice. (also i have already done in a real bearing support with bushing alignment but requires machining the basket gear) unlike others where only half the bearing is actually spinning on something and the rest can cause problems.. just some idea's.. i have talked with other " machinists and cnc guys about these things also. but after the real world time frame sets inplace and the relative low profit margin and low ROI they usually get dropped or abandoned for more profitable stuff... Quote Link to comment Share on other sites More sharing options...
gusto Posted October 8, 2015 Report Share Posted October 8, 2015 Now there is some input. Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted October 8, 2015 Author Report Share Posted October 8, 2015 shift star pins are a smidge short. the shaft is the real issue. its made of weak steel plate and flexes when being shifted. if the shaft is riding on the edges of the pins due to shit installation and/ or wear on the spacers and the cover as to allow the shaft to move back and forth in the case it makes it even worse.. when shifting they slide off the pins and miss a shift. OR the trans is bound and that happens also. a ratchet shift conversion would be the ultimate. an already ready to go override drum would be a great idear. shift star with correct placement of pin's and cuts for the1-5 n down and 6 speed N down would be great. case hardened gears with the angles already done on them would be killer also. the costs of all of this would be astronomical i'm sure. if the drum could be setup in a 1-5 combo and a 1-6 combo that would be nice. if it would cost less than 100 bucks with a star i think they would sell well. getting a good pattern for the override would be the tricky part. there are a ton of total shit verisons of setting N in place and ratcheting or clattering while in neutral or moving without running are common with those. i have a bulletproof pattern for the 1-5 n down that works much better than any other version i have used. but i'm not going to just publicly put it on here. . it would not have to be solid i have developed a 3 piece design that i think could be done relativley reasonable on costs. i just have no access to a cnc that can do it. billet basket like the HINSON straight cut spring loaded would be nice. 4 bolt 5/16 or 8mm bolts using spring cusion ?> idle gear with actual bearing that fits stock input shaft would be nice.. ( i have already done) clutch basket with bearing support instead of a bushing would be nice. (also i have already done in a real bearing support with bushing alignment but requires machining the basket gear) unlike others where only half the bearing is actually spinning on something and the rest can cause problems.. just some idea's.. i have talked with other " machinists and cnc guys about these things also. but after the real world time frame sets inplace and the relative low profit margin and low ROI they usually get dropped or abandoned for more profitable stuff... Wow!!! That is a lot of thing to think about!! Thx!! I will have to do the 3d model of the trany if we want to do majors upgrades with those kind of nice ideas!! Quote Link to comment Share on other sites More sharing options...
blowit Posted October 8, 2015 Report Share Posted October 8, 2015 CAM, we have looked into the shifting components in depth and agree, the core issue is a needed complete redesign of the shifting system!!! However, as you mention, there are likely not enough bucks to justify going through all that. We basically would have to start from scratch. I can't (actually I can, I used to work for them) believe Yamaha never corrected all the minor issues surrounding the Banshee engine. All the rein in the 90s and they did not reinvest.... No wonder Yamaha dumped all their design engineers and started over at the end of the 90s. R1/R6, Raptors, YFZ, YZ-F. Knowing this thread is treading on my area of expertise, I will say a LOT more goes into making an actual production part than just CMM'ing someone else's part, and machining a few. You really do have to look at the whole gamut such as inventories, shipping, customer service, liability, component failures, materials, processes, structural fatigue, etc. All I can say is customer service, failures, and "does it really work" are at the top of our list. I could probably go on and on between the differences in engineers and machinists. I have had to get in the middle of engineers and machinists in one of the biggest aerospace companies in the world. Engineers know what their computer says will work, per the numbers. But then they do dumb shit like a .0625 radius at the floor of a 6" deep pocket! Machinist don't understand why we want a radius in the first place! They also 'rarely' understand material properties enough to know how to get started from scratch, only bitch that the programming is wrong..... Machinists don't fully understand WHY that endmill will chatter, but they know from experience that 3/8"diam, 6"LOC cutter is not going to work. Take Ti for instance. I have in depth knowledge of the material and know WHY it is a bitch it cut. The word WHY is what I preach to people. That is the foundation of understanding. Actually, most engineers may know the properties of Ti, but fail to relate it to machining. What sucks is the actual properties that make Ti such a great material for high fatigue locations, especially landing gear, is the same properties that makes it suck to cut. OK, I am just rambling I think.... Brandon Mull Engineering 1 Quote Link to comment Share on other sites More sharing options...
ClaudeMachining Posted October 8, 2015 Author Report Share Posted October 8, 2015 Nice read, thx. For my part, i dont have any buisness interest at all. I'm making those parts for me and i make thread about it 'cause i think that some people like those kind of DIY thread. Quote Link to comment Share on other sites More sharing options...
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