Ausmini
It is currently Sun Jul 20, 2025 8:35 am

Board index » Mini Chat » Mini Chat

All times are UTC + 10 hours




Post new topic Reply to topic  Page 2 of 2
  [ 21 posts ]  Go to page Previous  1, 2
  Print view Previous topic | Next topic 
Author Message
Lillee
 Post subject:
PostPosted: Mon Nov 14, 2005 9:53 am 
Offline
1360cc
1360cc
User avatar

Joined: Tue Jun 01, 2004 3:41 pm
Posts: 6858
Location: Special Tuning Sydney
Forget it, who's racing anyway? I aint so no thanks

Although the above mentioned one sounds like a good deal for a full box with gears, it's still way overkill for anyone on the street IMO...

_________________
Lillee - 1969 Morris Mini K
Top
 Profile  
 
inazuma_x
 Post subject:
PostPosted: Mon Nov 14, 2005 10:16 am 
Offline
1098cc
1098cc
User avatar

Joined: Mon Oct 10, 2005 5:48 pm
Posts: 1200
Location: Brisbane, QLD
feralsprint wrote:
Mate, Formula one gearboxes are built to last just the length of the race and then they are thrown away, they build them as light as possible and usually dont have a full box of gears left at the end of the race

Straight cut boxes are not really good for street use as the nature of the box is to be strong and not consume as much power as a helical cut box but the mating surfaces of the gear is actually less than a helical box so there for the gears are not as durable for milage

Jon


sure...but thats the requirement of the race...and F1 engines are on the very edge of performance...all the time...

also they have to last a whole racing weekend as well as qualifying...not just 1 race...if the engine/tranny is changed between any event then the driver is placed between 10 places behind his current position in the grid...or at the very back of the grid...so these gearboxes are expected to last atleast 1500miles...which given the kinda stresses these things are under is pretty damn remarkable i think...

if a company can build a box for the application that can last...or even outlast...the expectations placed on it...they obviously know what they are doing...i am not expecting the SAME engineering to be employed in a street/track box as an F1 box...its a totally different kettle of fish...but still a testament to their engineering prowess...

_________________
Bling me up Scotty!
"wait till it grows into a plant...then bunny rabbit THE PLANT!"

1966 Morris Mini DeLuxe FOR SALE
Top
 Profile  
 
drmini in aust
 Post subject:
PostPosted: Mon Nov 14, 2005 10:23 am 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39754
Location: near Baulkham Hills, NSW
inazuma_x wrote:
feralsprint wrote:
Mate, Formula one gearboxes are built to last just the length of the race and then they are thrown away, they build them as light as possible and usually dont have a full box of gears left at the end of the race

Straight cut boxes are not really good for street use as the nature of the box is to be strong and not consume as much power as a helical cut box but the mating surfaces of the gear is actually less than a helical box so there for the gears are not as durable for milage

Jon


sure...but thats the requirement of the race...and F1 engines are on the very edge of performance...all the time...

also they have to last a whole racing weekend as well as qualifying...not just 1 race...if the engine/tranny is changed between any event then the driver is placed between 10 places behind his current position in the grid...or at the very back of the grid...so these gearboxes are expected to last atleast 1500miles...which given the kinda stresses these things are under is pretty damn remarkable i think...

if a company can build a box for the application that can last...or even outlast...the expectations placed on it...they obviously know what they are doing...i am not expecting the SAME engineering to be employed in a street/track box as an F1 box...its a totally different kettle of fish...but still a testament to their engineering prowess...

SC boxes will work for street use- just don't expect the hardening of the gears to last very long, due to shock load on the teeth. OK for low mileage & track day use.

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
Top
 Profile  
 
inazuma_x
 Post subject:
PostPosted: Mon Nov 14, 2005 10:27 am 
Offline
1098cc
1098cc
User avatar

Joined: Mon Oct 10, 2005 5:48 pm
Posts: 1200
Location: Brisbane, QLD
so you would recommend helical over SC for longevity? would like the best of both worlds if that were possible :P dont wanna have to shell out $5000 for a new box every few months :P

_________________
Bling me up Scotty!
"wait till it grows into a plant...then bunny rabbit THE PLANT!"

1966 Morris Mini DeLuxe FOR SALE
Top
 Profile  
 
drmini in aust
 Post subject:
PostPosted: Mon Nov 14, 2005 10:32 am 
Offline
religious status
religious status
User avatar

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39754
Location: near Baulkham Hills, NSW
inazuma_x wrote:
so you would recommend helical over SC for longevity? would like the best of both worlds if that were possible :P dont wanna have to shell out $5000 for a new box every few months :P

I choose to run Mk2 S gears..... I think ratios are nicer for street use. And they last. And I have a new set spare if I need `em... 8)

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
Top
 Profile  
 
feralsprint
 Post subject:
PostPosted: Mon Nov 14, 2005 10:49 am 
Offline
1275cc
1275cc
User avatar

Joined: Mon Jan 24, 2005 4:02 pm
Posts: 3477
Location: Queanbeyan
"sure...but thats the requirement of the race...and F1 engines are on the very edge of performance...all the time...

also they have to last a whole racing weekend as well as qualifying...not just 1 race...if the engine/tranny is changed between any event then the driver is placed between 10 places behind his current position in the grid...or at the very back of the grid...so these gearboxes are expected to last atleast 1500miles...which given the kinda stresses these things are under is pretty damn remarkable i think...

if a company can build a box for the application that can last...or even outlast...the expectations placed on it...they obviously know what they are doing...i am not expecting the SAME engineering to be employed in a street/track box as an F1 box...its a totally different kettle of fish...but still a testament to their engineering prowess...[/quote]"

The motors must last 2 race weekends, gearboxes are free

If you want to look at what is needed to make a straight cut box durable for long distances have a look at a Hollinger box out of a V8 supercar, they are damned heavy and built like a truck and he also built most of the sequential boxes that the Brits run in there touring cars

_________________
Roundies and Clubbies(except vans) are both ugly that is why I have Midas and a van
1293 Mini Midas Bronze,1275 Clubman van
Image
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 2 of 2
  [ 21 posts ]  Go to page Previous  1, 2

Board index » Mini Chat » Mini Chat

All times are UTC + 10 hours


Who is online

Users browsing this forum: Bing [Bot] and 79 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.