K Forks onto Mono
K Forks onto Mono
A much talked about subject I know but - The difference in stanchion length between the mono and K75S fork is 45mm. The top cast yoke(Triple tree) of the K takes up some 11mm more than the flat steel plate of the mono yoke but it still leaves the K fork some 34mm longer if fitted to my Mono twin, should I just adjust this by shortening the nylon spacer above the springs or perhaps shortening the stanchions - or does it not matter? I can't slide the fork up through the yoke as I'm using low european bars. Cheers
Re: K Forks onto Mono
Changing the length of fork tubes and internals so that all works well
just ain't all that easy – or cheap.
An alternate suggestion:
Sell the Euro bars on CL
use the cash to purchase a set of clip-ons to fit the forks
raise the tubes through the upper yoke to establish desired geometry as needed
(the easy way to do this)
and then attach the clips to the raised tubes above the yoke.
Take specific measurements of the clip-clamp height and the portion of tube that will be available ...
to verify the viability of the concept for your specific application.
If enough room is not available for the clip-clamp above the yoke,
consider something like Tarozzi High Rise clips that will raise the bars @ 70 mm
and mount them below the yoke.
just ain't all that easy – or cheap.
An alternate suggestion:
Sell the Euro bars on CL
use the cash to purchase a set of clip-ons to fit the forks
raise the tubes through the upper yoke to establish desired geometry as needed
(the easy way to do this)
and then attach the clips to the raised tubes above the yoke.
Take specific measurements of the clip-clamp height and the portion of tube that will be available ...
to verify the viability of the concept for your specific application.
If enough room is not available for the clip-clamp above the yoke,
consider something like Tarozzi High Rise clips that will raise the bars @ 70 mm
and mount them below the yoke.
Re: K Forks onto Mono
I really want to keep the euro bars on this bike - I have clip-ons on another
Looking at the internals of my K75S forks there are two large nylon spacers - I can't for the life of me see why that shortening these by the same amount as taken off the stanchion length would not be a good starting place - can you see why not? - the oil and air levels would change I suppose!
Looking at the internals of my K75S forks there are two large nylon spacers - I can't for the life of me see why that shortening these by the same amount as taken off the stanchion length would not be a good starting place - can you see why not? - the oil and air levels would change I suppose!
Re: K Forks onto Mono
Why dont you just try shortening the spacer and see how you like the results.
I dont think you will.
Other alternatives are simple 35mm bar risers, or clamps which fit to the raised fork tubes and will take your euro bars -they are made to let folks with Jap bikes with OEM clipons fit standard tube type bars.
I dont think you will.
Other alternatives are simple 35mm bar risers, or clamps which fit to the raised fork tubes and will take your euro bars -they are made to let folks with Jap bikes with OEM clipons fit standard tube type bars.
Adelaide, Oz. 77 R75/7. 86 R80 G/S PD, 93 R100 GS, 70 BSA B44 VS ,BMW F650 Classic
Re: K Forks onto Mono
Thanks for the reply - but - "I dont think you will"(like the results) - why? - what is it that you would expect?
Regarding the bars - I really want to keep them as they are - retro looking. The only other alternative would be forking out for a new mono top yoke (triple tree) but I already have the K75S forks!
Regarding the bars - I really want to keep them as they are - retro looking. The only other alternative would be forking out for a new mono top yoke (triple tree) but I already have the K75S forks!
Re: K Forks onto Mono
Alterations to the internals of a forks system will impact the handling behavior of that forks system.
Pretty obvious, that.
Altering that system without an understanding of the effects will very likely be problematic
either in terms of cost or safety...
Perhaps you are able to calculate the cumulative effects of your random proposed changes
or perhaps you will risk your safety to pursue the "trial and error" approach.
But then you will be the one asking the questions,
and I will be the one to say that, if you need to ask –
Houston, we have a problem.
Love those Euro-bars, eh ?
Good luck with the Motorcycle Handling, Chassis Design, Engineering, and Physics –
crash course !
Pretty obvious, that.
Altering that system without an understanding of the effects will very likely be problematic
either in terms of cost or safety...
Perhaps you are able to calculate the cumulative effects of your random proposed changes
or perhaps you will risk your safety to pursue the "trial and error" approach.
But then you will be the one asking the questions,
and I will be the one to say that, if you need to ask –
Houston, we have a problem.
Love those Euro-bars, eh ?
Good luck with the Motorcycle Handling, Chassis Design, Engineering, and Physics –
crash course !
Re: K Forks onto Mono
'scuse my ignorance, but what will the fork change achieve?
I had a K100 RS for 12 months (while my R100RS was nursing a sore head) and found that it was not much different at all to the boxer in terms of handling.
I had a K100 RS for 12 months (while my R100RS was nursing a sore head) and found that it was not much different at all to the boxer in terms of handling.
Lord of the Bings
Re: K Forks onto Mono
I am baffled too.ME 109 wrote:'scuse my ignorance, but what will the fork change achieve?
I had a K100 RS for 12 months (while my R100RS was nursing a sore head) and found that it was not much different at all to the boxer in terms of handling.
Monolever bikes have forks quite similar to K-bikes.
I've spent most of my money on women, motorcycles, and beer.
The rest of it I just wasted.
The rest of it I just wasted.
Re: K Forks onto Mono
I've played around with other airhead steering bearings before but I've struggled with the Mono, I replaced the bearings while taking the RT fairing off and have never been secure of what I felt in the handling - sure there could be many other things wrong but new tyres, secure swinging arm bearings as also the wheel bearings ?, But adjusting the head bearings is a downright pain in the backside - removing the tank, removing the handlebars and the clamps and then trying to torque the nut without twisting the forks - the nicely painted top plate isn't so nice now! I've had the bearing tighten up and the nut come loose!
The K forks with the thumb turn adjuster looks to be a better way of adjusting the bearings with a locking stud and nut and best of all a proper cast top yoke (tripple tree) with cast in bar mounts. The damping action isalso supposed to be better(?)
Lots of people have swapped them on their twins with ease - everthing but the discs and headlamp swap straight over(on a mono that is). The extra rigidity in the larger stanchions can do no harm but my only concern is that they are longer - hence my question about shortening them.
The K forks with the thumb turn adjuster looks to be a better way of adjusting the bearings with a locking stud and nut and best of all a proper cast top yoke (tripple tree) with cast in bar mounts. The damping action isalso supposed to be better(?)
Lots of people have swapped them on their twins with ease - everthing but the discs and headlamp swap straight over(on a mono that is). The extra rigidity in the larger stanchions can do no harm but my only concern is that they are longer - hence my question about shortening them.
Re: K Forks onto Mono
Frustrations understood Nourish.
What I've learned is that there is proper procedure for most repairs.
Proper procedure can only be applied to situations where all components involved are in a condition that will allow such procedure.
Specific tools are the next must have, in order to carry out such procedures.
Most important of all, is repeated experience in correctly applying 'procedure'
Employing the above ideals will ensure the best possible outcomes.
NB. I have never had anything to do with the above advice.
What I've learned is that there is proper procedure for most repairs.
Proper procedure can only be applied to situations where all components involved are in a condition that will allow such procedure.
Specific tools are the next must have, in order to carry out such procedures.
Most important of all, is repeated experience in correctly applying 'procedure'
Employing the above ideals will ensure the best possible outcomes.
NB. I have never had anything to do with the above advice.
Lord of the Bings