kbowling01
New Member
How can I get in touch with formula390 for parts needed or a bolt in shock?
Sent from my SM-G920P using Tapatalk
Sent from my SM-G920P using Tapatalk
psych0hans
Member
Have a look at his signature. Links to his website and stuff.
Matt @ Formula390
Owner, Fabricator, and Biscuit Czar
http://Formula390.com
http://facebook.com/Formula390
Specializing in performance parts for the RC390
Parts@Formula390.Com (512)88-RC390
AirRsq
New Member
Shock swap update
Update on my R6 shock swap project:
I got my shock put together and installed, but the weather here in Eastern NC has been complete garbage so I have yet to ride it.
Update on my R6 shock swap project:
I got my shock put together and installed, but the weather here in Eastern NC has been complete garbage so I have yet to ride it.
AirRsq
New Member
Here's a quick time lapse video of my suspension upgrade. Shock & fork springs.
https://youtu.be/w9opClZtQWw
https://youtu.be/w9opClZtQWw
Hekimpd
New Member
Awesome, although I thought you were in trouble as soon as that truck arrived home. ;-)
psych0hans
Member
You work really really fast...
Treachery
Moderator
You work really really fast...
Made me tired just watching.
rick
New Member
BTW, I do have a set of the McMaster Carr insert laying around. If anyone wants 'em I'll sell send 'em to you for ..I dunno, $5 should cover shipping and packing materials (US only).
psych0hans
Member
It's between 5-10mm longer. I think 5.
I have noticed a fair few of you posting in here have gone for quite a bit stiffer spring. As a result there is a lot more energy stored in that spring (for a given compression) therefore the dampering is going to be working very hard and will result in the shock getting hot, oil thining and losing damping effect. For anyone who has gone more than 3 steps stiffer on the spring I would recommend having the damping reworked as well.
Trimapa
New Member
Just received the kit from Matt : great stuff and again thank you Matt for your great service and fast shipping .
rick
New Member
Nice!
According to this spreadsheet the R6 shock has a 62mm stroke. The Ohlins KT303 for the RC390 has a 63mm stroke. So, I assumed that the R6 shock was gonna work pretty well. I hadn't been able to find the stroke of the stock shock until now.
Hi Rick thanks for the info is interesting, my shock arrived today and I measured the stroke at about 62mm! The Ohlins link is also quite informative as to spring rate looks like that ohlins shock designed for the 390 uses a 105N/mm spring and that would be for Mr Average say 85 kg. The spring rate on my standard R6 spring is 93N/mm ish I think will propably be ok for me at 70kg and mainly road riding I may get a 100N/mm spring before my next track day.
I am going to assemble it all this weekend and will post photos and sag figures as soon as I have them.
I am going to assemble it all this weekend and will post photos and sag figures as soon as I have them.
The R6 shock is about 4 - 5 mm longer overall (ie, eyelet to eyelet centers) than the OEM shock. This provides a useful bit of additional ground clearance for footpegs and other low-slung bits. Not sure about the stroke of the OEM shock, but I can say without a doubt that the R6 shock works much, much better on my Duke than the regrettably inadequate, low-budget OEM piece.
Trimapa
New Member
Just had some time to have a good look at the good that were sent to me from Matt at " Formula3990 " . Again first class material and I must say again Matt has been more than helpful : All the advise you may need and he really went the extra mile to get me a better shipping quote . Certainly not Matt's fault that USPS and all the other carrier seem to charge an arm and a leg to get stuff to Europe . All in all , I can recommend all here using Matt for your suspension needs . The guy must have written the suspension bible as he knows about everything ! Matt , thanks again and as I'm toying with the idea to get some Tyga carbon parts , I know already where I will be buying them from !
I'm in the process of installing the shock , all is going well . Thanks to some un-orthodox but very effective advise from Diploman here .
I'm in the process of installing the shock , all is going well . Thanks to some un-orthodox but very effective advise from Diploman here .
Trimapa
New Member
psych0hans
Member
Looking sharp!
I have also fitted an R6 99-02 shock to me bike.
Being only 70kg the stock spring (95n/mm) works just fine.
Static Sag 10mm
Dynamic Sag 40mm
Seat Height increased by 10-15mm
7 clicks Preload
7 clicks Compression
9 click Rebound
So far I am very impressed. The current settings are the stock R6 ones, so will start to play around with the setting over the coming weeks and months.
Similar threads
