[Blu916]

This thread is pure sex :fact

 

[marcaztls]

This thread is pure sex :fact

:lol Place your hands on the table where we can all see them...

 

[Blu916]

:lol Place your hands on the table where we can all see them...

Dammit... Ok, Ok, anyone got a towel? :crash

 

[ebags]

Dammit... Ok, Ok, anyone got a towel? :crash

It's the fur isn't it? :crash :hammer:

 

[Blu916]

It's the fur isn't it? :crash :hammer:

:yesnod :blush

 

[DanQ]

Don't know how I missed this thread. I've seen the title but haven't managed to read it.

As far as the geometry goes, what shock will be used, and what linkage?

Best case in my opinion would be an adjustable length model of each.

Once you have total weight it will be easier to figure out if the damping will keep up with the oscillations. If your rebound was keeping up with the carbon rear wheel, you should be more or less ok.

 

[marcaztls]

Don't know how I missed this thread. I've seen the title but haven't managed to read it.

As far as the geometry goes, what shock will be used, and what linkage?

Best case in my opinion would be an adjustable length model of each.

Once you have total weight it will be easier to figure out if the damping will keep up with the oscillations. If your rebound was keeping up with the carbon rear wheel, you should be more or less ok.

Hey Dan! Good to see you in here and thanks for the input in advance :thumbup

Obviously I had the option of pretty much altering the swingarm geometry in many ways but I've gone for matching the standard arm's numbers as far as pivot/linkage mount position and wheelbase is concerned. I don't know enough about what to alter reliably and to be frank, I'm just now reaching the point where I'm getting the bike to handle with the fixed positions as Yamaha supplied them.

I'll be using my existing Ohlins PRXLS shock and the standard linkage triangle and dogbone for now. The shock has a one step lighter spring but standard Ohlins damping (it's just been serviced actually) and I'd just got to a point with the preload and clickers where I was very happy with it. I know what I'm looking for now in terms of feel and tyre signals so as long as I have range, that should be achievable again.

I'll be weighing the assemblies when I get to a point that is possible

 

[marcaztls]

I just finally settled on the postions of two holes! :flex:

It was like the clouds parted, angles sang and trumpets blasted!







Had to share that. Is it wrong to really want a cigarette now?

 

[turd1]

I just finally settled on the postions of two holes! :flex:

It was like the clouds parted, angles sang and trumpets blasted!







Had to share that. Is it wrong to really want a cigarette now?

were they tim standing and tim bending?:scared
and you 'parted' his clouds and 'blasted' him with your trumpet?:no:2bitchsla

 

[AnonymousR1]

Looks great, Mark. Are you getting a larger rear rotor? Looks like it's not getting much contact with the pads in the caliper. (If you've already addressed this, I apologize.. I read through this thread like a children's book; just looked at the pictures. )

 

[DanQ]

Hey Dan! Good to see you in here and thanks for the input in advance :thumbup

Obviously I had the option of pretty much altering the swingarm geometry in many ways but I've gone for matching the standard arm's numbers as far as pivot/linkage mount position and wheelbase is concerned. I don't know enough about what to alter reliably and to be frank, I'm just now reaching the point where I'm getting the bike to handle with the fixed positions as Yamaha supplied them.

I'll be using my existing Ohlins PRXLS shock and the standard linkage triangle and dogbone for now. The shock has a one step lighter spring but standard Ohlins damping (it's just been serviced actually) and I'd just got to a point with the preload and clickers where I was very happy with it. I know what I'm looking for now in terms of feel and tyre signals so as long as I have range, that should be achievable again.

I'll be weighing the assemblies when I get to a point that is possible

I love that shock. My absolute favorite (until I get my new one for the track bike :lol).

With the lighter spring you should be well covered in adjustability. The linkage would give you a few more options. I keep an active search on those, so I'll forward to you if I trip across one.

I'm curious, with the amount of fab work/cnc machining that will take place, how hard would it be to make the the "hole" for the singarm pivot oval, and then machine eccentric inserts to offset the swingarm angle if desired. :dunno

 

[marcaztls]

were they tim standing and tim bending?:scared
and you 'parted' his clouds and 'blasted' him with your trumpet?:no:2bitchsla

Hahahaha! I see because he has enough sense not to follow my crazy ramblings in this thread, you're taking his place of tearing what I say to pieces! :lol

Looks great, Mark. Are you getting a larger rear rotor? Looks like it's not getting much contact with the pads in the caliper. (If you've already addressed this, I apologize.. I read through this thread like a children's book; just looked at the pictures. )

Hey Nick! Thanks mate :thumbup

I've got the caliper positioned so it's scrubbing exactly the same amount of rotor surface with the pads as the standard caliper/pads were. There will be a 2mm overhang of pad material pas the outer diameter of the rotor, which I'll be removing from the backing plate slightly before new pads are fitted.

I purposely didn't want to move the caliper in to sweep the 2mm of rotor as (and don't laugh...) it would have scrubbed the 'G' off of the Galfer logo etched into the rotor.

I said don't laugh!

 

[marcaztls]

I love that shock. My absolute favorite (until I get my new one for the track bike :lol).

With the lighter spring you should be well covered in adjustability. The linkage would give you a few more options. I keep an active search on those, so I'll forward to you if I trip across one.

I'm curious, with the amount of fab work/cnc machining that will take place, how hard would it be to make the the "hole" for the singarm pivot oval, and then machine eccentric inserts to offset the swingarm angle if desired. :dunno

Thanks Dan, please do if you find one

It wouldn't be hard at all I doubt, knowing what Paul's capable of.

I have thought also that it's possible to make inserts for the swingarm pivot at a later date and some for the frame and make it adjustable that way also in the future if I decided to go down that route.

 

[DanQ]

Thanks Dan, please do if you find one

It wouldn't be hard at all I doubt, knowing what Paul's capable of.

I have thought also that it's possible to make inserts for the swingarm pivot at a later date and some for the frame and make it adjustable that way also in the future if I decided to go down that route.

The frame would make for faster adjustments, but if doing a pivot point from scratch, I think it could be stronger than if done at the frame. I guess that's what they would have to do on the bikes that had the pivot co-located with the front sprocket. Hmmm.... have to do some reading tonight :lol

 

[marcaztls]

The frame would make for faster adjustments, but if doing a pivot point from scratch, I think it could be stronger than if done at the frame. I guess that's what they would have to do on the bikes that had the pivot co-located with the front sprocket. Hmmm.... have to do some reading tonight :lol

Yep, the strength would definitely be greater if it was incorporated in the swingarm pivot itself.

Anyway, stop giving me headaches! :lol

 

[paul8899]

I'm curious, with the amount of fab work/cnc machining that will take place, how hard would it be to make the the "hole" for the singarm pivot oval, and then machine eccentric inserts to offset the swingarm angle if desired. :dunno

I think the simple answer to that is very hard

Once its machined there isn't any square faces to hold on

 

[marcaztls]

I think the simple answer to that is very hard

Once its machined there isn't any square faces to hold on

There you go then :fact

I like nice 'simple' round holes for the moment!

Here's the 11th version of my template, I keep adding bits but this is a really, really good way to go:

 

[marcaztls]

Well i's 12.34am here and I'm going home. Because I've finished mapping out the hole locations for the front section!!!!!!! :flex::flex::flex:

Being a hand made piece, the holes positions are each very, very slightly individual and it's taken literally me looking through a 5x magnification eye loupe for the last few hours to nail them down. Finally I have the positions and excuse the crappy bolts (they're M10x1.5 and I don't have four nice ones to mock up with yet) but here is the template mounted perfectly flat and everything lines up 100%.

I can't describe how relieved I am to have that bit finished.

 

[turd1]

go to sleep! and nice job!:thumbup

 

[Kangaroo]

Are you still married? :lol