Slingy or WP modern Swinging arm options ?

[Pheasantplucker]

Made any progress with your rear suspension set up?

Im following with much interest as I’m trying something similar.

[NorthernBloke]

Yes it’s nearly done, it all works but the suspension is very hard due to the angle of the dog bones. I need a lowered bottom bracket, to get the suspension leverage back to what it was. I’ll put some pics up later

[Pheasantplucker]

Well done, thank you,  I have a lowering bracket on order so I won’t get around to taking it apart till that arrives so not sure how it’ll end up yet..

[NorthernBloke]

Here’s a pic minus the bodywork and can do you can see it properly 

[Pheasantplucker]

Hi,

did you manage to keep your battery box in the same place?

[Pheasantplucker]

This arrived today, looking forward to Christmas now. 

[NorthernBloke]

6 hours ago, Pheasantplucker said:

Hi,

did you manage to keep your battery box in the same place?

Yes I have so far, but if the suspension travel increases once I soften the rear end it might not as its fairly close ATM.

[NorthernBloke]

9 minutes ago, Pheasantplucker said:

This arrived today, looking forward to Christmas now. 

Would you be able to provide me the dimensions of your bracket please, distances between mounting holes, width of the 2 pivot areas etc ?

[Pheasantplucker]

When I get home this evening I’ll have a measure.

At £65 each it’s an absolute bargain. 

[Pheasantplucker]

Well, it was bloody cold out in the shed last night so I waited till this morning, not much better!

32mm between the split mounting and the outside width is 62mm,

the solid mounting on the other side is 60mm wide.

Hope this confirms wether you can use one of these brackets or not, good luck.

[NorthernBloke]

5 hours ago, Pheasantplucker said:

Well, it was bloody cold out in the shed last night so I waited till this morning, not much better!

32mm between the split mounting and the outside width is 62mm,

the solid mounting on the other side is 60mm wide.

Hope this confirms wether you can use one of these brackets or not, good luck.

Thanks pal, much appreciated, I'll get in the shed when the rain stops and measure up.

[Pheasantplucker]

There’s no way that that K7 arm is going in without moving the battery (92 slingshot) so I’ll keep it for another project. 

[NorthernBloke]

On 12/13/2020 at 11:40 AM, Pheasantplucker said:

Well, it was bloody cold out in the shed last night so I waited till this morning, not much better!

32mm between the split mounting and the outside width is 62mm,

the solid mounting on the other side is 60mm wide.

Hope this confirms wether you can use one of these brackets or not, good luck.

 Can you please measure the distance between the two mounting holes on the flat plate please and the distance from these to the  round pivot mounts roughly please?

 

[NorthernBloke]

I thought it would be good to finalise the thread and show the finished setup.

I rode the bike for a while with the Busa Arm, and all other parts GSXR WP except for homemade dog bones.  It was apparent straight away that the suspension was way too hard even with the shock preload took all the way off, it would bounce me out of the seat over any bumps and made the ride much more front end down.

So I bit the bullet and bought one of Dans bottom brackets and during trial fitting it was obvious that the bottom linkage wouldn't fit so I bought a Busa linkage and then bought the parts to make adjustable dog bones as I was sick of making non adjustable ones and having to make new ones when the height wasn't quite correct.

So its all now together, but I can't road test it yet as the new linkage is in the way of the exhaust routing, so currently looking for someone to make me a new link pipe.

here are the comparison pictures;

1 - standard WP rear end

2 - new arm, with standard bracket

3 - new arm, with standard bracket and one off dogbones

4 - new angle with dans bracket

5  - linkage now in the way of the exhaust

 

[NorthernBloke]

1 minute ago, NorthernBloke said:

I thought it would be good to finalise the thread and show the finished setup.

I rode the bike for a while with the Busa Arm, and all other parts GSXR WP except for homemade dog bones.  It was apparent straight away that the suspension was way too hard even with the shock preload took all the way off, it would bounce me out of the seat over any bumps and made the ride much more front end down.

So I bit the bullet and bought one of Dans bottom brackets and during trial fitting it was obvious that the bottom linkage wouldn't fit so I bought a Busa linkage and then bought the parts to make adjustable dog bones as I was sick of making non adjustable ones and having to make new ones when the height wasn't quite correct.

So its all now together, but I can't road test it yet as the new linkage is in the way of the exhaust routing, so currently looking for someone to make me a new link pipe.

here are the comparison pictures;

1 - standard WP rear end

2 - new arm, with standard bracket

3 - new arm, with standard bracket and one off dogbones

4 - new angle with dans bracket

5  - linkage now in the way of the exhaust

 

After all that the pictures came out in the wrong order, but I'm sure you can work out the correct order.

[Pheasantplucker]

You’ve made good progress, nice to know a component list that works.

[NorthernBloke]

Finally finished ( well for this summer at least )   Update, I've had a custom link pipe made for the exhaust now so I've been able to ride it for the first time with Dan's suspension bracket and with the Busa bottom link and my adjustable dog bones. The transformation is great I now have working rear suspension that cushions bumps and no longer bounces me out of the seat and tips me forward onto the tank.

I;ve also saved a few kilos by dumping the horrible old exhaust can and pipe so it's a win win, working suspension, less weight and a nicer exhaust note to boot, here are the pics.

 

 

 

[Digs]

Lot of great info on here, hope you got the suspension dialled in to where you want it. 
 

What’s the travel like, compared to stock?