View Full Version : Suspension cam
kiwifruit
8th December 2011, 19:53
Footage of the front and rear ends of my 88 Ducati. I wish i'd taken some before shots!
Thanks to CKT, here is the after:
<iframe width="560" height="315" src="http://www.youtube.com/embed/-ikCFhVW9rc" frameborder="0" allowfullscreen></iframe>
Maha
8th December 2011, 19:59
Thats some very cool shit right there...good to see a fellow rear brake user at the 2 min mark.
kiwifruit
8th December 2011, 20:24
Be interesting to do this sort of thing on a few race bikes at Wanganui. A Motard, a superbike and that guy on the harley.
ducatilover
8th December 2011, 21:00
Neat video, yummy Duke!
It has a rattle though...;)
Robert Taylor
9th December 2011, 04:43
Footage of the front and rear ends of my 88 Ducati. I wish i'd taken some before shots!
Thanks to CKT, here is the after:
<iframe width="560" height="315" src="http://www.youtube.com/embed/-ikCFhVW9rc" frameborder="0" allowfullscreen></iframe>
Great job Allan! The stock shock would have rattled both your teeth and blurred the camera!
saul
9th December 2011, 05:38
That was interesting mate:yes:
Quite a difference after the work done?
kiwifruit
9th December 2011, 06:05
That was interesting mate:yes:
Quite a difference after the work done?
Oh yes, huge difference. Really bought the old girl back to life. Highly recommended!
nodrog
9th December 2011, 07:06
Ohlins + Ducati = you get paid too much Mr Fruit :sunny:
Mental Trousers
9th December 2011, 07:28
Oh yes, huge difference. Really bought the old girl back to life. Highly recommended!
Upgrading from stock suspension is the best way to get yourself a new bike. But it's still your bike!!
Robert Taylor
11th December 2011, 10:37
Ohlins + Ducati = you get paid too much Mr Fruit :sunny:
Expensive always seems to be an automatic misconception
nodrog
11th December 2011, 12:25
Expensive always seems to be an automatic misconception
can we please have a sarcasm smiley added to this site please mods?
Robert Taylor
11th December 2011, 12:33
can we please have a sarcasm smiley added to this site please mods?
Absolutely no sarcasm intended. The cost of mods to this bike including construction of a one off rear Ohlins shock are likely less than many would misconstrue. Certainly the owner is very happy with the end result and the value.
kiwifruit
11th December 2011, 17:44
When it comes to improving one's motorcycle, sorting the suspension out is by far the best value for money one can get. It's not as expensive as you may think either.
Mental Trousers
11th December 2011, 18:23
When it comes to improving one's motorcycle, sorting the suspension out is by far the best value for money one can get. It's not as expensive as you may think either.
Cheapest way to get a new bike
nodrog
12th December 2011, 06:52
Absolutely no sarcasm intended. The cost of mods to this bike including construction of a one off rear Ohlins shock are likely less than many would misconstrue. Certainly the owner is very happy with the end result and the value.
I was refering to my initial post Robert :love:
Robert Taylor
12th December 2011, 10:48
I was refering to my initial post Robert :love:
Im having a blonde moment.....
nodrog
12th December 2011, 10:56
Im having a blonde moment.....
Tube top and mini skirt?
Robert Taylor
12th December 2011, 18:42
Tube top and mini skirt?
Now you're talking! But back on thread it was great to view the suspension action on that Ducati
rapid van cleef
12th December 2011, 21:42
well?????????????????????????? how much was it then?
Robert Taylor
12th December 2011, 22:05
well?????????????????????????? how much was it then?
Thats for the owner to divulge and its individual to the bike, work required and specification level.
kiwifruit
13th December 2011, 06:48
well?????????????????????????? how much was it then?
$1200 - Ohlins Ohlins DU 321 (Monster), custom built to fit
$ 900 - Rebuilt forks with Race Tech emulators, linear wind fork springs and fabricated preload spacers
Robert Taylor
14th December 2011, 20:18
Kiwifruit has asked if I will post about the suspension work carried out, so here goes;
FRONT FORKS. Fully stripped and inspected for wear, including condition of bushings. Inspected for truth / straightness. Damper rods machined so that they would actually assemble concentrically inside the forks. Also processed to accept Race Tech Emulators which we also modify / tune to suit the application. Linear wind springs selected in a rate appropriate to the riders personal stats, the bike and the application. Low friction fork seals fitted, its often misunderstood that suspension work is also about reducing friction. Cheap low cost seals all too often create massive friction and that clearly can be felt when riding. Forks filled with super slippery Ohlins fork oil and the level carefully adjusted to set the ''secondary trapped air spring compression ratio''
REAR SHOCK. Custom build Ohlins in a single tube type with an internal gas dividing piston ( to prevent cavitation and fade ) , with rebound adjuster and castellated preload lockrings. A dedicated Ohlins listing has never ever been available for this model so what we first do is to establish the length and stroke required, end fittings and clearance issues to contend with. We then scroll through current listings that Ohlins do make that are as close as possible to the target specification. We then modify to suit and mess around with the spring rate and preload to get it all in the correct window of rider sag and resultant static sag correlation. Once we have got the springing very close that then gives us a pretty reasonable idea of a solid baseline start for an internal rebound valving spec. We will arrange the rebound stack so that the rebound adjuster is in the most responsive range of the needle taper. Most of the work is then done with the internal compression stack, low speed to attain some dynamic holdup but just enough weight transference under power. And a high speed compression stack that is supple enough to allow abrupt bumps to be absorbed. This is all largely done by feel and in the case of this bike we had the shock apart 3 times and successively revalved to get the feel we wanted. The shock absolutely has to match the motion ratio that the swingarm imparts to it. And a rising rate linkage ( where fitted )
Its a big misconception that we send out boxes of pre-built suspension and nothing else. This is in fact time consuming work and while some may freak at the price its likely cheaper than it really should be.
caspernz
15th December 2011, 09:09
When it comes to improving one's motorcycle, sorting the suspension out is by far the best value for money one can get. It's not as expensive as you may think either.
:niceone::niceone: With you on that, the advantages are many and you don't even have to be a speed junky to appreciate the improvement. Best money I ever spent on a bike. But like Dennis at CKT, sorry KSS, said when I got mine done: "Now that you've done it to this bike, you'll wanna do it to your next one as well." No argument there.
kiwifruit
15th December 2011, 10:55
"Now that you've done it to this bike, you'll wanna do it to your next one as well."
Yeah, that's the only problem eh!
caspernz
15th December 2011, 11:19
Yeah, that's the only problem eh!
Here's something you won't often hear from a tight fisted Dutchman: "On a value for money basis, the suspension fix is simply a no-brainer!"
The hard part for some folks might be that money spent on suspension bits, ie bits that don't immediately grab the eye when your ride is parked outside your chosen cafe or pub, is a problem. Well, either that or the misconception that stock suspension is close enough. In my case the stock setup was so far from ideal it just wasn't funny. But you don't find that out until you ride the improved bike.
For me, I bought a $10,000 bike and I spent around $1,800 with CKT for the suspension upgrade. I still maintain it's the best money I've ever spent on any bike.:niceone:
jrandom
15th December 2011, 11:25
Absolutely no sarcasm intended. The cost of mods to this bike including construction of a one off rear Ohlins shock are likely less than many would misconstrue. Certainly the owner is very happy with the end result and the value.
Yep, he's happy enough to have convinced me that it's a worthwhile mod for the Nightster.
Don't worry, Robert, I really will get those measurements through to you at some point before Christmas.
:pinch:
vifferman
15th December 2011, 11:46
Pity there was no 'before' footage, and it would've been nice to see the suspension action against a better reference. I suspect if I did that to mine, the back tyre would be skipping off the ground over ripples (at least, that's what it feels like sometimes).
jrandom
15th December 2011, 11:54
Pity there was no 'before' footage, and it would've been nice to see the suspension action against a better reference.
We'll do that with the Hardley.
vifferman
15th December 2011, 12:11
We'll do that with the Hardley.
So, it's a Hardley? Your 'mate' that I work with rides a CanHardley (sometimes). It CanHardley go around right-hand corners, on account of the oh-so-styley-but-f'kn-huge mufflers on the right. Why the fook would you design a bike that doesn't corner?!?
jrandom
15th December 2011, 12:18
Why the fook would you design a bike that doesn't corner?!?
Well, that's all relative innit.
My one goes around corners just fine. Scrapes the pegs fairly soon in the process, of course. If you want to go quicker on it you just have to move around.
Be interesting to see what CKT can do with it.
martybabe
15th December 2011, 12:31
Kiwifruit has asked if I will post about the suspension work carried out, so here goes;
FRONT FORKS. Fully stripped and inspected for wear, including condition of bushings. Inspected for truth / straightness. Damper rods machined so that they would actually assemble concentrically inside the forks. Also processed to accept Race Tech Emulators which we also modify / tune to suit the application. Linear wind springs selected in a rate appropriate to the riders personal stats, the bike and the application. Low friction fork seals fitted, its often misunderstood that suspension work is also about reducing friction. Cheap low cost seals all too often create massive friction and that clearly can be felt when riding. Forks filled with super slippery Ohlins fork oil and the level carefully adjusted to set the ''secondary trapped air spring compression ratio''
REAR SHOCK. Custom build Ohlins in a single tube type with an internal gas dividing piston ( to prevent cavitation and fade ) , with rebound adjuster and castellated preload lockrings. A dedicated Ohlins listing has never ever been available for this model so what we first do is to establish the length and stroke required, end fittings and clearance issues to contend with. We then scroll through current listings that Ohlins do make that are as close as possible to the target specification. We then modify to suit and mess around with the spring rate and preload to get it all in the correct window of rider sag and resultant static sag correlation. Once we have got the springing very close that then gives us a pretty reasonable idea of a solid baseline start for an internal rebound valving spec. We will arrange the rebound stack so that the rebound adjuster is in the most responsive range of the needle taper. Most of the work is then done with the internal compression stack, low speed to attain some dynamic holdup but just enough weight transference under power. And a high speed compression stack that is supple enough to allow abrupt bumps to be absorbed. This is all largely done by feel and in the case of this bike we had the shock apart 3 times and successively revalved to get the feel we wanted. The shock absolutely has to match the motion ratio that the swingarm imparts to it. And a rising rate linkage ( where fitted )
Its a big misconception that we send out boxes of pre-built suspension and nothing else. This is in fact time consuming work and while some may freak at the price its likely cheaper than it really should be.
Yes, that's what I thought you'd done :laugh: Frankly I don't understand most of that but I frequently read that Ohlins transform my Particular bike from good to outstanding. Without tilting my brain off it's axis again, can we start with the price of a new springy shocky thing for the front of a '2000' BMW R1100RS please and take it from there. Pm me if this isn't an appropriate place to discuss business, thanks.
Robert Taylor
15th December 2011, 12:46
Yep, he's happy enough to have convinced me that it's a worthwhile mod for the Nightster.
Don't worry, Robert, I really will get those measurements through to you at some point before Christmas.
:pinch:
No worries! We are all a bit chaotic at this stupid time of year.
Robert Taylor
15th December 2011, 12:47
Pity there was no 'before' footage, and it would've been nice to see the suspension action against a better reference. I suspect if I did that to mine, the back tyre would be skipping off the ground over ripples (at least, that's what it feels like sometimes).
Good point.
Robert Taylor
15th December 2011, 12:48
Yes, that's what I thought you'd done :laugh: Frankly I don't understand most of that but I frequently read that Ohlins transform my Particular bike from good to outstanding. Without tilting my brain off it's axis again, can we start with the price of a new springy shocky thing for the front of a '2000' BMW R1100RS please and take it from there. Pm me if this isn't an appropriate place to discuss business, thanks.
Will pm you tonight
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