Husaberg
Go Back   Husaberg Forum > Husaberg Forum > Husaberg

Husaberg Husaberg Forum - Husaberg Motorcycle Forum


Reply
 
LinkBack Thread Tools Display Modes
January 23rd, 2006, 10:24 PM   #1
Junior Member
 
uijui's Avatar
 
Joined: May 2005
From:

Posts: 11
Thanks: 0

I Ride:
Max revs for FC470 2002 -trying to calculate ratios for ICE!

Hello,

stock fc470 -02 - max revs - peak power revs - safe revs?

I'm trying to calculate gear ratios for Iceroadracing. Should
top about 170km/h. Back tire -105/90-19

regards,
Jarkko
uijui is offline  
 
January 24th, 2006, 12:54 PM   #2
Senior Member
 
Joined: Aug 2003
From: Chandler, AZ, USA

Posts: 517
Thanks: 0

I Ride:
Re: Max revs for FC470 2002 -trying to calculate ratios for

uijui,

Gearbox ratios for your bike should be:

1st: 14/33 = 2.357
2nd: 17/30 = 1.765
3rd: 19/26 = 1.368
4th: 23/25 = 1.087
5th: 24/22 = 0.917
6th: 27/20 = 0.741 ( the FC "close ratio" 6th is: 25/21 = 0.840)

Stock sprocket combo is: 13/48 = 3.69

There is a helpful sprocket combination ratio sheet in my gallery here.

I could not tell you where your max power/torque readings will be obtained but by looking through some of the galleries that others have and finding dyno charts you should be able to get a ballpark area where max power is achieved and where sign off is. Hope this helps you with any info you may not have already had.

Regards,
sandskipper is offline  
January 24th, 2006, 01:06 PM   #3
Senior Member
 
Joined: Aug 2003
From: Chandler, AZ, USA

Posts: 517
Thanks: 0

I Ride:
Re: Max revs for FC470 2002 -trying to calculate ratios for

uijui,

I did a quick browse through Dale Lineaweavers gallery and found the following dyno chart off of a KTM450:

KTM450

I know this is not a Husaberg 470 but should give you some ballpark figures to go off of. Max power was reached about ~8200rpm and the max effective range for any power is about ~9000rpm. Sign off occures about ~9500rpm. Maybe you could use these figures to get an estimation of where your bike will produce its power most effectivly and its useful range. Again, I know its not a Husaberg but should get you in the ballpark.

Regards,
sandskipper is offline  
January 24th, 2006, 03:09 PM   #4
Senior Member
 
Joined: Nov 2001
From: Ely, England

Posts: 15,653
Thanks: 447

I Ride: Husaberg FE501e 2003
Re: Max revs for FC470 2002 -trying to calculate ratios for

forget it!

your wheel is spinning uncontrollably, bouncing and hooking-the lot. just rev it till it runs out of power and then try not to do it again. over revved huseys sink the valves into the head and may need to be replaced. tight tappets is a sure sign of this.

you've been warned!

regards

Taffy
Taffy is offline  
January 24th, 2006, 03:16 PM   #5
Senior Member
 
nsman's Avatar
 
Joined: Oct 2004
From: nova scotia

Posts: 1,340
Thanks: 14

I Ride:
Re: Max revs for FC470 2002 -trying to calculate ratios for

While is not impossible to spin a properly ice studded tire in fact they hook up better than any tire on dirt.The traction has to be felt to be believed!
nsman is offline  
January 25th, 2006, 12:18 AM   #6
Junior Member
 
uijui's Avatar
 
Joined: May 2005
From:

Posts: 11
Thanks: 0

I Ride:
Re: Max revs for FC470 2002 -trying to calculate ratios for

Originally Posted by nsman
While is not impossible to spin a properly ice studded tire in fact they hook up better than any tire on dirt.The traction has to be felt to be believed!
Damn you are right! In Finland we use special studded tires for clean ice only.



Traction is incredible. And so is the cornering speed. Bikes are lowered for ice. Fastest riders like Mika Kallio scratch their footpegs on the ice...

So I calculated 14/40 should be right.

Thanks guys.

Jarkko
uijui is offline  
Reply

  Husaberg Forum > Husaberg Forum > Husaberg

Tags
2002, calculate, fc470, ice, max, ratios, revs



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help me understand gear ratios mikegcoleman Wheels and Tires 3 August 11th, 2010 07:11 PM
2000 fe600 vs 2002 fc470 tkavan01 Husaberg 31 July 31st, 2009 09:26 PM
FC470 2002.... Should I buy it? SeNNinhA Husaberg 5 April 15th, 2009 11:19 AM
Help! 2002 FC470 now wont start MagnoX Electrical 6 July 9th, 2007 12:42 PM
2002 FC470 BD Husaberg 10 September 2nd, 2004 02:16 PM


Facebook Twitter Google+ RSS Feed