coombehouse Posted September 25, 2015 Share Posted September 25, 2015 Just got my Rotor out of the US - will see how things go - need to buy some more rigid tooling for the lathe.I will be interested to see wht you rhink about the hardness. If you were not such a long long way from me I could give you some carbide tips that I just happened to acquire. Keep us posted.Nick Quote Link to comment
coombehouse Posted September 25, 2015 Share Posted September 25, 2015 When are you going into manufacturing them, could probably sell quite a few.lovely work.cheers SRRIt did cross my mind but now I have given away all the secrets the machining is pretty simple so it would be difficult to make any money. However as you live fairly close, if you want to do the conversion & need some material or machining just shout.Nick 1 Quote Link to comment
Gammaboy Posted October 12, 2015 Share Posted October 12, 2015 Because I can't trust my lathe do give me an adequate surface finish, I dropped my spare GSX Starter gear off today at a gear cutting workshop who have the gear for cylindrical grinding - they're going to let me know if they think it's through hardened, if not, it's off for case hardening or nitriding. Recieved my Chinabay stator on friday too. Quote Link to comment
Gammaboy Posted October 21, 2015 Share Posted October 21, 2015 Just got a call from the guy doing the Grinding - it's case hardened, so soft in the middle. Might be that your tooling was blunt enough to work harden it and make it machine "hard". Quote Link to comment
coombehouse Posted October 21, 2015 Share Posted October 21, 2015 I used a tool with a new throw away carbide tip but hopefully it has work hardened so I won't have to worry about getting it heat treated. How are you going to address this issue. How will you case harden without messing up the rest of the gear? Quote Link to comment
Gammaboy Posted October 21, 2015 Share Posted October 21, 2015 Rest of the gear is already case hardened - not a problem. Quote Link to comment
Gammaboy Posted October 22, 2015 Share Posted October 22, 2015 It appears that the GSX1400 flywheel fits the large taper GSX cranks - it's a different starter clutch diameter though. Quote Link to comment
coombehouse Posted October 22, 2015 Share Posted October 22, 2015 Great bit of info. Just looked at a picture on Eblag. Is the starter clutch bigger or what.? Quote Link to comment
Gammaboy Posted October 23, 2015 Share Posted October 23, 2015 Bigger starter clutch - not sure on overall diameters. I've been given this info second hand - don't know if the starter clutch will work with a GSX gear yet, but I'm sure Joe will have a look. Hell, there's probably half a chance a GSX14 starter gear will do the job. Quote Link to comment
Gammaboy Posted November 13, 2015 Share Posted November 13, 2015 Bigger starter clutch - not sure on overall diameters. I've been given this info second hand - don't know if the starter clutch will work with a GSX gear yet, but I'm sure Joe will have a look. Hell, there's probably half a chance a GSX14 starter gear will do the job.So the issue for GSX14 starter sprag is the GSX14 needs the engagement diameter to be .5mm larger - GSX11 is 52mm, GSX14 is 52.5. Rotor is bigger - 128mm OD, 115mm OD on the stator. Quote Link to comment
Gammaboy Posted December 8, 2015 Share Posted December 8, 2015 (edited) Got my gear back from grinding and hardening - I think i should have shopped around a bit more to find a cheaper grinder/heat treater - Ouch!Still, looks mint, is hard as hell and a perfect size/finish. I think i'm going to use the OEM bronze washer, and knock up a thinner washer to sit at the other side of the starter gear between the gear and the sprag/rotor. Edited December 8, 2015 by Gammaboy Quote Link to comment
coombehouse Posted December 8, 2015 Share Posted December 8, 2015 What did the grinding & heat treatment cost?I may have to go to see our heat treatment department at work & have a chat with them though I am not sure if it can be done now I have machined mine to the final size.Making the bronze washer wasn't too hard but I do have a big chunk of bar. Pity you live so far away. Quote Link to comment
Gammaboy Posted December 8, 2015 Share Posted December 8, 2015 wound up costing ~$350 AUD, so ~170quid-ish - Pretty spendy, but I dont have the machining/heat treatment contacts I used to Should be able to heat treat at final size - that's what they did for mine.My theory with the other washer is trying to improve the oil feed to the sprag past the sprag segments - the GSXR i assume has a high pressure feed to the the bushing in the centre of it's gear, so probably pushes a bit more oil out to the sprag peanuts.Yeah, Being in Oz can be a real pain - more so since UK Post cranked it's rates right up. 1 Quote Link to comment
coombehouse Posted December 9, 2015 Share Posted December 9, 2015 Ouch that seems a lot of money. Keep us posted on the next bitNick Quote Link to comment
Screwriverracing Posted December 12, 2015 Share Posted December 12, 2015 Any more news on this combehouse,and of subject any pics of your bike with the EFI fitted?Cheers SRR Quote Link to comment
coombehouse Posted December 12, 2015 Share Posted December 12, 2015 Ah there lies a story. It ate its cams. I do have all the bits to fix it now but its 3rd in a queue. By Xmas it will be done with some bigger throttle bodies too & I am going to change the oil feed to the cams. I will post some pictures here as you did ask a while ago & I didn't do it. Sorry.Nick Quote Link to comment
Gammaboy Posted December 13, 2015 Share Posted December 13, 2015 Bugger - eating it's cams is no fun. I need to spend some quality time with the lathe to get mine sorted... might be after christmas, I've got a timber deck to build Quote Link to comment
coombehouse Posted December 13, 2015 Share Posted December 13, 2015 Bugger - eating it's cams is no fun. I need to spend some quality time with the lathe to get mine sorted... might be after christmas, I've got a timber deck to build Just be glad its summer where you are. Having said that its not exactly cold here either. 12 degrees today. Could have gone out for a ride but 8 bikes & none the road. Quote Link to comment
Gammaboy Posted August 11, 2016 Share Posted August 11, 2016 So, forgot to mention I got this together and sorted. I didn't make up a thicker washer to control end float of the starter gear - I figured the extra mm of movement shouldn't be an issue. I did have to machine up and flame harden a spacer to go between the nut and the rotor. All buttoned up and it's making good voltage, is revvy and feels faster everywhere without being hard to get off the line. I did have to extend the wiring a fair bit on the GSXR stator, but it's not rocket science. I did have a wierd issue where the inner diameter of the starter gear shrank ~0.1mm when it was heat treated - had to "hone" it with the lathe and some emery to get it back out to a diameter that actually allowed me to slide it onto the needle bearings. 2 Quote Link to comment
Jonboy Posted August 11, 2016 Share Posted August 11, 2016 Good follow up Gammaboy, when you say its revvy is this because there is less rotating mass on the end of the crank? Quote Link to comment
Gammaboy Posted August 11, 2016 Share Posted August 11, 2016 6 minutes ago, Jonboy said: Good follow up Gammaboy, when you say its revvy is this because there is less rotating mass on the end of the crank? Exactly that. Quote Link to comment
Gammaboy Posted November 22, 2016 Share Posted November 22, 2016 So this is still working nicely, but it appears it ate the reg rec on the weekend - time to fit a SH775 Series reg rec instead of the ancient GPX250 one I was using. Quote Link to comment
Screwriverracing Posted November 27, 2016 Share Posted November 27, 2016 Hi Gammaboy, got any pics of the set up? Cheers SRR Quote Link to comment
Gammaboy Posted November 27, 2016 Share Posted November 27, 2016 Yeah, in my kat thread. Quote Link to comment
Gammaboy Posted January 3, 2017 Share Posted January 3, 2017 So, a quick update and a "Gotcha" - for reference the spacer/adaptor for the stator needs to be 3.5mm thinner if you're using a small PCD Kat cover - the standoff is taller. Quote Link to comment
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