Gen 2 F4 on track - MVAgusta.net
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 17 (permalink) Old 05-28-2015, 02:00 PM Thread Starter
Senior Member
 
Join Date: Apr 2012
Location: Switzerland
Posts: 318
Gen 2 F4 on track

Is it just me or is this bike freakishly high compared to other track bikes???
mgivogue is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 05-28-2015, 03:19 PM
Old Wing Nut
 
esq'z me's Avatar
 
Join Date: Aug 2007
Location: Marietta, GA
Posts: 17,967
Send a message via Skype™ to esq'z me
The seat height, etc are similar to all the other liter bikes out there....so it must just be you?!?

Center of gravity, rider ergonomics, suspension sag, chassis geometry all combine to create the sensations you feel while sitting on and riding a bike.

I used to be fast....now I just dream about it.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

'08 910R (Gina), '04 F4 SPR #275 Track Bike (Lola), YSR50 (The Rabbit), '71 CB100 (Lil' Red), '75 RD350C (Orange Bird) restoration project, 2015 Indian Chieftain (Rita) my "low-n-slow", '70 Suzuki F50 (Baby Blue), 2018 Suzuki GSX-S750L8 (Susie Q)
esq'z me is online now  
post #3 of 17 (permalink) Old 05-29-2015, 02:36 AM Thread Starter
Senior Member
 
Join Date: Apr 2012
Location: Switzerland
Posts: 318
ummmm....stock setup, put on a 200/60 pirelli and i cannot touch both feet - even on tippy toes. Seat height is higher so not only a sensation. Also, at a track where i get my knee down on nearly every corner i am no longer able to do so except on a few corners...clearance (at least to me) is very high

That said, does anyone have experience in how far it is safe to drop the forks? Next trackday is time to start working on ride height/geometry and if anyone has experience that can pass on a decent baseline that i can start with it would same me time/effort when at the track.
mgivogue is offline  
Sponsored Links
Advertisement
 
post #4 of 17 (permalink) Old 05-29-2015, 02:43 AM Thread Starter
Senior Member
 
Join Date: Apr 2012
Location: Switzerland
Posts: 318
just looked up seat heights:
F4 860mm
ZX10R 813mm
Ducati 1198 820mm
Ducati Panigale 825mm
Aprilia RSV4 810mm

5cm is a lot for short buggers like me! BTW, sag/comp/rebound setup as per maint manual or normal starting points on-track - need to work on base setup (geometry/height, work on preload/compression in front to get full fork travel and watch the tires for wear patterns to adjust the rebound)
mgivogue is offline  
post #5 of 17 (permalink) Old 06-01-2015, 01:44 PM Thread Starter
Senior Member
 
Join Date: Apr 2012
Location: Switzerland
Posts: 318
Wtf!
Went to drop the front forks 2 lines which is a "good starting point" as per dream team(checked all clearances and good)...found that the right fork was already dropped half a line compared to the left. I'm going to assume it is from the accident before I bought it but I see no other movement.

Donsy, you mentioned 1 line = 4mm at the rear in another thread...can you confirm? I'm going to drop the rear the equivalent of 1 line to lower the bike in general and quicken the steering at same time (again- dream team)
mgivogue is offline  
post #6 of 17 (permalink) Old 06-01-2015, 06:57 PM
Moderator
 
Donsy's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 22,054
New Site Garage
Lightbulb

Quote:
Originally Posted by mgivogue View Post
Wtf!
Went to drop the front forks 2 lines which is a "good starting point" as per dream team(checked all clearances and good)...found that the right fork was already dropped half a line compared to the left. I'm going to assume it is from the accident before I bought it but I see no other movement.

Donsy, you mentioned 1 line = 4mm at the rear in another thread...can you confirm? I'm going to drop the rear the equivalent of 1 line to lower the bike in general and quicken the steering at same time (again- dream team)
You should measure it yourself and keep notes.

Dons Nel
Own - Two F4 1000R's 06 and 07.
PayPal :
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

eMial:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Mobile in Australia: 0438 385 776
Website with MV Manuals for Most models -
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Donsy is offline  
post #7 of 17 (permalink) Old 06-15-2015, 02:30 PM Thread Starter
Senior Member
 
Join Date: Apr 2012
Location: Switzerland
Posts: 318
Ok - feedback from 2 days testing...if anyone is interested❓❓❓

2 setups tried
1. Own star wheels with Michelin power cup tires (190/55 rear)
2. BST wheels with Bridgestone v02 slicks (120/600 front and 200/655 rear)

Start of test - recommend track settings as per manual, front dropped by 2 lines on forks and rear dropped by 5mm and 29mm sag front and rear
End of test - same geometry, 2.5 turns less front preload, 4 clicks less front compression.

Results:
Star wheels- steering a bit slow still, might drop front 1 more line
BST wheels - no more geometry changes needed.
Both - MUCH more at ease (no longer feel like a midget on a normal sized bike, easier to judge track position and get knee down similar to my full race prepared Daytona 675). Clearance good - room to drop anoth line or more at front and 4-5mm lower in back before need to worry. Fork travel - 1.5cm from bottoming out - another 2-4 clicks less compression and 0.5-1 turn less preload??? Rear pretty good (tire wear only needed 0.05 bar more pressure on Michelin rear as showing signs of overheating) but it was obviously heating up at end of 25 minute runs even with exhaust wrapped. Times within 2 seconds of Daytona at very technical track where power is nearly meaningless and handling/weight everything

Conclusion - going in right direction. Front needs more tuning and replace springs (near minimum preload) and lighter fork oil...rear needs new shock.

Back testing in 2 days ��
mgivogue is offline  
post #8 of 17 (permalink) Old 06-15-2015, 04:43 PM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 20,825
Send a message via Skype™ to silentservice703
Those 600 and 655 aspect ratio tires must make the bike VERY tall...
(Great cornering clearence though, I'm sure...)

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

Email/Paypal:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
post #9 of 17 (permalink) Old 06-15-2015, 11:51 PM Thread Starter
Senior Member
 
Join Date: Apr 2012
Location: Switzerland
Posts: 318
They do. That's why I dropped the rear a bit as well
mgivogue is offline  
post #10 of 17 (permalink) Old 06-16-2015, 03:44 AM
Senior Member
 
silentservice703's Avatar
 
Join Date: Feb 2008
Location: Duxbury, MA, USA
Posts: 20,825
Send a message via Skype™ to silentservice703

Gapalicious 2019 at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
from OCTOBER 2-6, 2019

Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

Email/Paypal:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


My personal Cell Phone: (781) 223-3020


'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
silentservice703 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to use all of the features of the MVAgusta.net site, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome