| [ Total Views: 1278 | Total Replies: 7 | Thread Id: 20719 ] |
|
|
 fullnoise
Fahrvergnugen
Posts: 964
Threads: 103
Registered: September 21st, 2002
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Middle of the road.
|
| posted on March 26th, 2004 at 01:52 PM |
|
|
New Racing Tyres
I just fitted some lovely Yokohama racing tyres. They're the R-spec tyres for a Lotus Elise. These things are light weight and super sticky. The were
specifically designed for the font end of the light weight souped up Lotus.
I can't wait to try these on the track. They should be seconds quicker than my aging A008Rs tyres.
I just have to take the Pyro to the track and figure out the best pressures.
I can see 1:14s at Wakefield Park. Bring it on.
CYA, CT:tree:tree
| Error |
| Sorry, you must be a registered user in order to download attachments. |
|
esratrams
|
|
|
Kai.A.
Fahrvergnugen
Posts: 915
Threads: 76
Registered: September 29th, 2003
Member Is Offline
Location: Adelaide
Theme: UltimaBB Pro Blue ( Default )
Mood: dubless...
|
| posted on March 26th, 2004 at 04:25 PM |
|
|
all that and they look seriously cool too!!! 
kai
|
|
|
Cam
Custom Title Time!
Posts: 1535
Threads: 187
Registered: August 27th, 2002
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: addicted
|
| posted on March 29th, 2004 at 06:58 PM |
|
|
Oh yeah, love those semi slicks. Look mad!
I have some yokohama Advan S'. What would be the difference between these and what you have, CT?
Cheers,
Cam
|
|
|
fullnoise
Fahrvergnugen
Posts: 964
Threads: 103
Registered: September 21st, 2002
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Middle of the road.
|
| posted on March 30th, 2004 at 08:27 AM |
|
|
Advan is a brand name Yokohama doesn't promote in Australia but it is usually on the racing tyres. You may have A032R tyres which is our usual R-spec
tyre. It's widely used among club cars and is the control tyre for Aussie Racing Cars. I couldn't find them in a suitable size. Then I stumbled
across these Lotus tyres.
I wanted to keep the tyre width as narrow as possible so they get up to their operating temperature asap. I'll still have to go out hard on my first
lap.
I've just got to get the front end working properly to do them justice.
Back to your question Cam. Have your tyres got any numbers on them like A032R, A008R, A005 etc.?
Let me know and I'll tell you a bit about them.
CYA, CT
P.S can you find out what your uncle thinks of the drop spindle concept with relation to suspension geometry.
esratrams
|
|
|
Cam
Custom Title Time!
Posts: 1535
Threads: 187
Registered: August 27th, 2002
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: addicted
|
| posted on March 30th, 2004 at 10:13 AM |
|
|
Cool man, cheers. I'll check them out and get back to you. I don't know what the new Lotus' are running but in the mid to late 90's they were
using 175's on the front. With the option of bigger tires if you wanted to go racing. I know my Advan's are 205's tho and came off a 924 turbo.
|
|
|
Cam
Custom Title Time!
Posts: 1535
Threads: 187
Registered: August 27th, 2002
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: addicted
|
| posted on March 30th, 2004 at 10:15 AM |
|
|
Okay... They're 032-R's in 205-60 all around.
I'll chase up the dropped spindles for you. I know he's in Germany at the moment. But he should have his work e-mail on.
|
|
|
Cam
Custom Title Time!
Posts: 1535
Threads: 187
Registered: August 27th, 2002
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: addicted
|
| posted on March 30th, 2004 at 03:17 PM |
|
|
CT, I got this reply from him:-
"Interesting, I am thinking of this in two parts....
First the easier part is the loading, by raising the spindle you will now have a lot more load during cornering on the top arm, this could lead to
binding, premature wear of the bearing surfaces, some more deflection etc... It is unlikely to cause a breakage as the loads will still be less then
what would be achieved in a kerb strike or similar.
Secondly as they are forging the spindle assy then machining it, they could be making some pretty big changes to the geometry, (camber and castor off
set), it might be a good means of cranking in some negative camber for the track. As it has the two trailing arms from the beams I do think there will
be any significant effects on geometry etc...again it comes down to how they have positioned the spindle relative to the standard one.
Obviously you will still need to do all of the normal clearance checks...
I hope this helps, it sounds like a good way to go."
- I've e-mailed him back a stack of questions too.
|
|
|
fullnoise
Fahrvergnugen
Posts: 964
Threads: 103
Registered: September 21st, 2002
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Middle of the road.
|
| posted on April 1st, 2004 at 05:45 PM |
|
|
Thanks Cam,
That's a positive start to the front suspension change I'm considering.
I wish those CB spindles were forged not cast. Alternatively I wish the quality welded spindles didn't poke the rims out so much.
I will benefit from a wider track at the front and more suspension travel. Hopefully I'll get some more steering lock.
As your uncle says I'll have to check that the tyres don't foul anything at full lock with the suspension completely compressed.
It should be interesting.
The A032Rs are good but like all racing tyres they start to go down hill after a certain amount of heat cycles. What I'm getting at is that you
can't really judge the performance of second-hand tyres because you don't know how old they are or how many heat cycles they've been through.
CYA, CT
esratrams
|
|
|
Cam
Custom Title Time!
Posts: 1535
Threads: 187
Registered: August 27th, 2002
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: addicted
|
| posted on April 2nd, 2004 at 03:44 PM |
|
|
oops, I thought they were forged. D'oh!
The other option I've been considering is (in an ideal world ;-p); getting some custom ones made up. I know a mate of mine (hows on this forum
occasionally) got some suspension parts made for his buggy out of some wicked aerospace materials through a mate of his.
However I'm assuming this would be expensive, since they're hand machined, so I doubt even with multiple orders the costs would go down much.
Cool, thanks man. They're still soft to touch and the grooves are still good, but, I'm thinking of getting some new ones for the new car anyway.
Speaking of which... I get my floorpan delivered on monday...
:o Sheesh, what am I getting myself into again?!?!?! 
|
|
|
 Peter Leonard
Super Moderator
Volatile
Posts: 1456
Threads: 52
Registered: April 18th, 2003
Member Is Offline
Location: Perth
Theme: UltimaBB Pro Blue ( Default )
Mood: shiny
|
| posted on April 6th, 2004 at 10:57 PM |
|
|
eeeeh they look exy :o
let sleeping dubs lie
|
|
|
