the CB13 frame is sitting in the shed waiting for Nov 1st, game plan is to get rid of everyone else's jobs by then, tear into the fab of the 13, then as soon as it's out the door get the 1000 frame in the jig
I dug through the box of things that might come in useful today, found a thing to help make an adjustable support, just needed to turn an insert for it. Figured it better than a block of wood
unfortunately, even after chopping it down I couldn't get the frame at 23.5', the sump plug ended up touching
so I dismantled the swingarm jig and managed to get the spindle through the frame
the adjustable support can hold it while i make inserts to reduce the frame down to 20mm, centering the spindle properly
once that's done the front can be raised to the proper angle , something to pivot on
not much done on this today, but I was quite pleased when packing all the stuff I removed from the engine / frame , to see how little by way of electrical gubbins there is , should be easy enough to hide away . I'll need a power commander, second hand ones for K4 1000's seem a little thin on the ground , K4 750's on the other hand are plentiful, so we're going to call dynojet and see if they are compatible
I did remove the butterfly from inside the link pipe, doing away with a bundle wires, two control cables and black box
time to get the frame to the proper angle, much easier now I have the swingarm spindle to pivot on
meant to be 23.5, but this'll do, it's more for visual than anything as all the other points will be jigged in relation to it
my adjustable support comes in handy again
Decided to shorten the base of the jig, made it long enough for all eventualities, but to be honest I need it to be more movable, there's no way I could get to both sides of it to make the frame
that's it about 3ft shorter ( chopped a little off the other end too )
this plate will tie onto the base and have fittings welded to it to secure the engine
going to make a plate up to bolt onto the exhaust studs
a second plate sits on the other side
it'll have a post like so
that'll connect to these
one in the top shock mount
the other in the linkage mount
unfortunately the lower one is a few thou too wide , need to get me to a lathe , resisted the temptation to buff it down, frame will only be as good as the jig
I am leaning towards leaving the bearing pockets in the neck undersize, then final boring them once the frame is 100% welded, that way I can be certain the steering stem and swingarm pivot are bob on
I wasn't happy that the cross piece of the jig was spot on, so I loosened everything off and took the swingarm pivot pin back out. While I was putting it all back together I remembered I had a steel tube with inserts in the ends with 20mm holes, used it while putting new pivot points in the Z650 frame, so that's in the frame now ready for attaching to the jig
It has a mashup of spacers along with it, but I'll make proper ones
the lower insert was trimmed to length
and the front mounting plates started
If all goes to plan the old frame will be off tomorrow
the old frame is off the jig, today has been a battle between me trying to get things done and my inner chimp wanting to smash the whole fuckin place ...... I fed him beer and hoped for the best .
I've been checking the specs of the new GSR compared to the GSXR, the GSXR has a rake angle of 23.5' where as the high barred GSR is 25' , the last thing I want is to go to all this grief and end up with a bike that's super twitchy and tries to launch me into the scenery at every opportunity (i'm old enough to realise I'm no super hero)....
soo I'll change the neck angle a bit , make adjustable offset yokes (letting me set the trail ) , an adjustable swingarm pivot and ride height adjuster for the shock... hopefully that'll be enough to set it up
that's the inserts for the adjustable swingarm pivot point drawn up , they are of course subject to change, but the basics are there, I can get 5mm up or down with these
it would appear I have me a headstock.... all by my own hand too
and so it begins
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