Haynes Forums  

Go Back   Haynes Forums > Haynes Roadster Forums > SVA/Legal
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 26th June 2014, 04:29 PM
Stot's Avatar
Stot Stot is offline
Senior Member
 
Join Date: Nov 2012
Location: Wolverhampton
Posts: 755
Default

I did the same. My MX5 build is weighing in at ~620kg without fuel so if there is more than 450 over the back something is up!

Cheers
Stot
__________________
1.6 Mazda B6 : Garrett TBO339 : 420cc WRX Injectors : FMIC : Microsquirt V3 : LC-2 Wideband : Toyota COP : 1.8 ATB LSD
Build Started Jan 2013 : OTR Aug 2014 : Still OTR June 2024
Reply With Quote
  #2  
Old 26th June 2014, 08:24 PM
baz-r baz-r is offline
Senior Member
 
Join Date: Nov 2009
Posts: 1,464
Default

i put the same as thats in the book and i pased fine even with a 35l fuel tank

axle 1=450kg
axle 2=450kg
total = 900kg
Reply With Quote
  #3  
Old 27th June 2014, 08:21 AM
flyerncle flyerncle is offline
Senior Member
 
Join Date: Mar 2008
Location: gateshead,near cobbly bit of A1 North
Posts: 3,188
Default

It does not make sense the weights being the same,if you put both axles at the same weight then the DGW is say 900 kg one axle would possibly be overloaded ie the front one.
__________________
Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!


If at first you dont succeed,avoid skydiving...

No parachute require to freefall,only if you want to do it twice.
Reply With Quote
  #4  
Old 27th June 2014, 01:39 PM
skov's Avatar
skov skov is offline
Senior Member
 
Join Date: Jan 2011
Posts: 1,085
Default

450 / 450 / 900 worked for me.
Reply With Quote
  #5  
Old 28th June 2014, 06:42 PM
flyerncle flyerncle is offline
Senior Member
 
Join Date: Mar 2008
Location: gateshead,near cobbly bit of A1 North
Posts: 3,188
Default

After thinking about it,its probably good numbers and maybe a little high for the rear.
__________________
Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!


If at first you dont succeed,avoid skydiving...

No parachute require to freefall,only if you want to do it twice.
Reply With Quote
  #6  
Old 30th June 2014, 07:48 AM
snapper snapper is offline
Senior Member
 
Join Date: May 2007
Location: Chelmsford, Essex
Posts: 360
Default

The axle weights are the max fully loaded that the car is designed to take not the actual as measured
Weights include full fuel tank 25 to 35Kg
Driver and passenger 75Kg each
Luggage 25Kg each

Design weights for IVA are used to find if the build is within design limits and also to work out the brake bias when tested on the brake rollers
As axle weights are measured on the rollers and one axle is on the hard standing there is a slight lever effect
Reply With Quote
  #7  
Old 30th June 2014, 08:45 AM
flyerncle flyerncle is offline
Senior Member
 
Join Date: Mar 2008
Location: gateshead,near cobbly bit of A1 North
Posts: 3,188
Default

As I said above if you weigh the axles as they are the weights are probably somewhere near,what you put down for axle weights is the DGW and and this should not be exceeded.

It would be interesting to put one on an ATL brake tester and see what the axles actually weigh.
__________________
Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!


If at first you dont succeed,avoid skydiving...

No parachute require to freefall,only if you want to do it twice.
Reply With Quote
Reply


Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 07:11 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.