The 650 is just too big for a gyro, Kyle. That's the next project, based on a CB250 frame. :p
Kurt On Aug 13, 2012 9:46 AM, "Kyle Munz" <kyle...@gmail.com> wrote: > I was trying to figure out where to mount the wings, or perhaps just make > a gyrocopter out of it? > > -Kyle > > > On Mon, Aug 13, 2012 at 7:09 AM, Kurt Nolte <vturbine.po...@gmail.com>wrote: > >> Teach me to send emails without looking. *DRIVESHAFT side, no aircraft. >> >> Going to go check out a machine shop on Wednesday before an optometry >> appointment, see what they'll run me to make the cuts and do the lathe work. >> >> Kurt >> On Aug 13, 2012 8:05 AM, "Kurt Nolte" <vturbine.po...@gmail.com> wrote: >> >>> I thought on it some more, and with the sleeves I plan to use I can get >>> away with really simple cuts on each side of the swingarm. The sleeve on >>> the aircraft driveshaft side will take care of the lip. >>> >>> Then it's a matter of getting the sleeves turned down and one bushing in >>> the rear needs a slope cut into it. >>> >>> Shouldn't be expensive. >>> >>> Kurt >>> On Aug 13, 2012 7:50 AM, "Allen Thomas" <althomas...@gmail.com> wrote: >>> >>>> ** >>>> Man you're in deep, good luck with it. >>>> Sent via BlackBerry by AT&T >>>> ------------------------------ >>>> *From: * Kurt Nolte <vturbine.po...@gmail.com> >>>> *Sender: * nighthawk_lovers@googlegroups.com >>>> *Date: *Sun, 12 Aug 2012 14:13:21 -0400 >>>> *To: *<nighthawk_lovers@googlegroups.com> >>>> *ReplyTo: * nighthawk_lovers@googlegroups.com >>>> *Subject: *Re: [Nighthawk Lovers] The Great CB650SC update >>>> >>>> Update minus pictures, the camera's still in the garage all set up. >>>> I'll get pictures later once I have time to resize them and >>>> >>>> The left side pivot bolt takes a 14mm allen bit. The right side is a >>>> 10mm allen, and a 23/24mm or 1" deep socket can be cut down to make the >>>> tool for the locking nut. I cut down a gearwrench 23mm deep 3/8" drive >>>> socket, using a 1.25" speedbor bit and some scrap wood to make a template >>>> to align the keys. They're ~10mm wide and located at an easy 90* from each >>>> other: four lines on a square of wood, drill down the middle, cut off the >>>> 6-point section of the bit to get to the meatier part of the socket, mark >>>> and cut. Freehanded it well enough with an angle grinder and a cutoff >>>> wheel. >>>> >>>> When I got the two swingarms out and side by side, there was an >>>> immediate issue: the Sabre swingarm is ~1.5" wider at the pivot than the >>>> CB650 swingarm. HOWEVER, the Nighthawk arm does not butt against the frame >>>> on both sides; actual clearance difference is closer to 1/4" rather than >>>> the 1"+ the width difference suggests, especially once the step is >>>> accounted for on the Nighthawk arm. >>>> >>>> The bearing diameters are different, that was obvious; the Nighthawk >>>> uses NSK 30202 bearings (15x35x11.75mm bore diameter X outer diameter X >>>> depth) while the Sabre uses 30203J bearings (17x40x12mm). There is also not >>>> enough thickness to the Sabre arm tube to machine the step on the shaft >>>> side, though there is PLENTY of depth on the brake side to cut down for >>>> clearance. >>>> >>>> Given my original intention to leave the Nighthawk frame intact, only >>>> adding tabs and not cutting any part of the frame, I have a plan. I'm going >>>> to have the Sabre swingarm cut to make clearance, then I will fit a steel >>>> sleeve bushing into each side, sized to allow me to continue using >>>> Nighthawk bearings, seals and grease retainers. Since I am not increasing >>>> the weight of the bike in any significant way, these will be fine. These >>>> sleeves will allow me to machine the step on the driveshaft side, and give >>>> me some additional thickness on the brake side. >>>> >>>> A stock Nighthawk right side pivot bolt can easily be cut down and >>>> machined to accept the closer frame, and should actually be stronger for it >>>> with less lever arm. >>>> >>>> Sleeving to use the Nighthawk bearings allows me to use stock, readily >>>> available bearings and seals. Using the bearing codes means they're >>>> ~$16/each versus $45+ at a motorcycle site or dealer, and this isn't >>>> "direct from China" pricing either; that's $3 each. Not worth it to me, I'd >>>> rather have "Made In Japan," "Made In Germany," or "Made In USA" on my >>>> bearings. >>>> >>>> My ONLY concern with this is the difference in tube centerlines for the >>>> driveshaft tubes. The Nighthawk arm has a tube centerline, measured from >>>> the flat outer face of the bearing tube, of 1.7". The Sabre swingarm, >>>> measured similarly, is 2.4", for a difference of .7". >>>> >>>> I obtained these centerlines by clamping a straight edge to the bearing >>>> face on the outside of the swingarm, then measuring to a straight edge held >>>> against each wall of the driveshaft tube. There may be an issue with my >>>> methodology. 1.7" does not appear to put the driveshaft universal joint in >>>> any danger of scraping or rubbing on the outside of the Sabre swingarm >>>> tube, though that .7" difference does mean that the joint will be operating >>>> at a bit of an angle. Are there shims I can remove to move the angle drive >>>> closer to the transmission before we enter the swingarm? I am also going to >>>> try getting a little bit of material taken from the Sabre arm to reduce >>>> that distance, but I can't take more than a 1/4" that way, IF that. Will >>>> still leave me nearly 1/2" out of alignment, but only on the driveshaft >>>> tube centerlines, not necessarily the the driveshaft itself. >>>> >>>> Looking at the way the driveshaft sits in the Nighthawk tube with the >>>> final drive case installed, it rides really close to the edge of the tube >>>> anyway rather than down the centerline. The Sabre has an extra .4" of >>>> clearance on that side (1" even from outer face to inner tube wall vs. >>>> Nighthawk's 1.4"). I think I'll be fine. >>>> >>>> On a non-swingarm (or perhaps tangentially related) I will be building >>>> a bracket to move the rear brake pedal assembly 1/2" further from the >>>> frame. This will let me mount the rear master cylinder where it won't >>>> interfere with the swingarm's movement, and looking at where the footpad >>>> ends up it won't be a problem for my big foot. >>>> >>>> Any thoughts, ideas, questions so far? >>>> >>>> -Kurt >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>> To post to this group, send email to nighthawk_lovers@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> nighthawk_lovers+unsubscr...@googlegroups.com. >>>> For more options, visit this group at >>>> http://groups.google.com/group/nighthawk_lovers?hl=en. >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Nighthawk Motorcycle Lovers!" group. >>>> To post to this group, send email to nighthawk_lovers@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> nighthawk_lovers+unsubscr...@googlegroups.com. >>>> For more options, visit this group at >>>> http://groups.google.com/group/nighthawk_lovers?hl=en. >>>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To post to this group, send email to nighthawk_lovers@googlegroups.com. >> To unsubscribe from this group, send email to >> nighthawk_lovers+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/nighthawk_lovers?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to nighthawk_lovers@googlegroups.com. > To unsubscribe from this group, send email to > nighthawk_lovers+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. 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