The frame is also now complete in Solidworks so we have grabbed a few closeup shots of some of the details.
Chamfered edges feature on all the bosses to minimise any excess weight.
Headstock gussets and aluminum bearing inserts. This allows for easy interchanges between different fork setups which use different sized bearings with the insert clamped into place using pinch bolts.
H Arron,
ReplyDeleteNice work! I see you're looking for some sw/arm pivot measurements. I can tell you that on a pointy, the spacing between bosses is 248mm. They are offset, the RHS is 44mm from the outside face of the frame, LHS (with the screw adjuster) is 50.7. I have a spare swingarm & pivot, I'll measure them for you tonight if you like, although I have no dustcovers.
Do you happen to have the 3 inter-mount distances for the motor? I'm struggling to fix on 240 or 241mm between top-rear and the main (between cylinders) one, because the main one opens out in the centre of the cases (I'm measuring dismantled cases) and general sloppiness of holes...
Graham
Ok, swingarm pivot thread really is M28x1.5
ReplyDeleteSwingarm width for a pointy is 241.3mm including the inner bearing races/flanges, but minus dust caps.
Cheers,
Graham
Graham,
ReplyDeleteThanks for that, its really helped.
You are right with 241mm for said dimension. The dimension from top-rear to bottom-rear is 217mm and the other dimension to makeup the triangle is 365mm.
I found when I started out that it was a pain in the arse to get these measurements because all the mounts are offset, but having it all on CAD and having made a frame already I know that they fit the engine.
Thanks,
Arron
Yep, I'm currently building a jig off a spare frame. Lots of fiddling to make sleeves for all the mounts so I can accurately pick off their centres. Whether the frame is actually made to the same centres as the motor is another question, since that's presumably why they make all the mounts over-size.
ReplyDeleteLooking at your frame, have you worked out the weld sequence in the joints where several tubes meet? Looks like it might be tricky... I notice Ducati systematically avoid the issue by never using 3-way joints.
Cheers,
GB
Graham,
ReplyDeleteI know the sequence, main tubes first then all the triangulation tubes fit afterwards, but I never really noticed that Ducati doesnt have 3 way joints before.
I've got hold of a copy of both manuals and had a look at the diagrams for both swingarm setups now and with the aid of your dimensions have re-modelled it in CAD, so the design will frame will be able to accomodate both versions of swingarm (all be it with a 6mm spacer for the curvy).
This is amazing! Is the frame CAD files open-sourced? Do you have any plans to share with other hobbits, or can we purchase the Solidworks files and or frame?
ReplyDelete