18-04-15, 01:41 PM
Hi All,
It's been a while since I've posted anything about the R1 front end up swap so I thought I'd share the updates.
I offered up the new R1 5PW bottom yoke (with FZS steering stem) and 5VY top yoke to my frame and it fits like a glove. A shroud was needed to reduce free play between the steering stem and bore, and to raise the top yoke up about 8mm as the R1 top yoke is quite a bit thinner than that of the FZS yoke. I think I will need to drill and fit grub screws into the steering stops to prevent any knocking against the radiator or clocks- the clearance between these parts is pretty close to say the least, as both yokes are much wider than the FZS's, but otherwise job's a good 'un
The next stage will be fitting my original FZS ignition barrel to the 5VY top yoke, the reason being to keep all the lock sets matching.
The OEM spec ignition barrel for the R1 is significantly wider than that of the FZS, and for the lock stop to mate with the frame during assembly I will have to lower the ignition barrel by quite some way also- 22mm to be exact. Some small hollow spacers should do the job quite nicely, and the mounting points for the ignition barrel will have to be enlarged and re-tapped for the new security bolts to fit during final assembly, otherwise the lock set simply won't be secure. I'll upload some photos during fabrication to better illustrate what I mean.
Once this is all done I will need to fit bar ends to my new Convertibar clip on risers. As I'm intending to use clip on's rather than the typical clamp riser conversion normally carried out on similar conversions, this should raise handlebar height to just 5mm lower than normal bar height on an OEM FZS front end. Bearing in mind I'm only about 5ft 4- a tad on the 'vertically challenged' side, this should suit me to a T. Furthermote there shouldn't be any hose/ cable stretch issues with the handlebars being more or less in their originally intended position. Weirdly enough the original FZS bar ends fit pretty well in the Convertibar handlebar ends- a happy coincidence although the Convertibar handlebars are intended for push-fit bar ends?! Some rubber tubing should ensure sufficient fitment and eliminate any free play. Alternatively PTFE tape and 'hope' should work as a short-term fix.
For anyone looking for similar clip on risers, I've had a look at similar companies- Renthal and Woodcraft both coming highly recommended- but all of the above charge extortionate prices for new bars. My advice, either have some 'bespoke' clip on risers made up or watch eBay like a hawk like I did. Needless to say I owe eBay and my local bike breakers a fair bit after all these parts.
Cheers again for all your advice and let me know what you think. I'll try to comment on this thread a little more regularly than I have been and hopefully I'll have some photos ready for you all the next time I update it
It's been a while since I've posted anything about the R1 front end up swap so I thought I'd share the updates.
I offered up the new R1 5PW bottom yoke (with FZS steering stem) and 5VY top yoke to my frame and it fits like a glove. A shroud was needed to reduce free play between the steering stem and bore, and to raise the top yoke up about 8mm as the R1 top yoke is quite a bit thinner than that of the FZS yoke. I think I will need to drill and fit grub screws into the steering stops to prevent any knocking against the radiator or clocks- the clearance between these parts is pretty close to say the least, as both yokes are much wider than the FZS's, but otherwise job's a good 'un
The next stage will be fitting my original FZS ignition barrel to the 5VY top yoke, the reason being to keep all the lock sets matching.
The OEM spec ignition barrel for the R1 is significantly wider than that of the FZS, and for the lock stop to mate with the frame during assembly I will have to lower the ignition barrel by quite some way also- 22mm to be exact. Some small hollow spacers should do the job quite nicely, and the mounting points for the ignition barrel will have to be enlarged and re-tapped for the new security bolts to fit during final assembly, otherwise the lock set simply won't be secure. I'll upload some photos during fabrication to better illustrate what I mean.
Once this is all done I will need to fit bar ends to my new Convertibar clip on risers. As I'm intending to use clip on's rather than the typical clamp riser conversion normally carried out on similar conversions, this should raise handlebar height to just 5mm lower than normal bar height on an OEM FZS front end. Bearing in mind I'm only about 5ft 4- a tad on the 'vertically challenged' side, this should suit me to a T. Furthermote there shouldn't be any hose/ cable stretch issues with the handlebars being more or less in their originally intended position. Weirdly enough the original FZS bar ends fit pretty well in the Convertibar handlebar ends- a happy coincidence although the Convertibar handlebars are intended for push-fit bar ends?! Some rubber tubing should ensure sufficient fitment and eliminate any free play. Alternatively PTFE tape and 'hope' should work as a short-term fix.
For anyone looking for similar clip on risers, I've had a look at similar companies- Renthal and Woodcraft both coming highly recommended- but all of the above charge extortionate prices for new bars. My advice, either have some 'bespoke' clip on risers made up or watch eBay like a hawk like I did. Needless to say I owe eBay and my local bike breakers a fair bit after all these parts.
Cheers again for all your advice and let me know what you think. I'll try to comment on this thread a little more regularly than I have been and hopefully I'll have some photos ready for you all the next time I update it