18LikesXray NT1
09-17-2007, 11:48 AM
#1951
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09-17-2007, 12:07 PM
#1952
Suspended
No, I'm not. The brake cam post has a machined flat and you may have to extend it a little by filing off the shoulder on top so it clears the brake disc. There is a clearance, but it's pretty tight...
09-17-2007, 12:19 PM
#1953
09-17-2007, 12:42 PM
#1954
Here is a quick update on tire wear at the nationals track, have any of you guys tried using a harder tire on just one side? Does it drive oddly enough to worry about it? Is there anything I can do setup wise to help this out? The nats surface will have enough traction to require 45 shore rear tires and I've had an extremely hard time finding any harder than that.
This was for a 15 minute main and maybe 3 minutes of warmup.
Twister tires, 40 shore @ 58mm fronts and 42 shore @ 60mm rears.
56.9mm RF
56.1mm LF
55.7mm RR
57.6mm LR
This was for a 15 minute main and maybe 3 minutes of warmup.
Twister tires, 40 shore @ 58mm fronts and 42 shore @ 60mm rears.
56.9mm RF
56.1mm LF
55.7mm RR
57.6mm LR
Also, I'm surprised that your RF is wearing less (edit) than your LF given your RR tire wear. Anybody else seen that type of tire wear? Is that symtomatic of anything?
Last edited by rmdhawaii; 09-17-2007 at 01:15 PM.
09-17-2007, 12:59 PM
#1955
Tech Adept
09-17-2007, 01:16 PM
#1956
09-17-2007, 01:42 PM
#1957
56.9mm RF
57.6mm RR
56.1mm LF
55.8mm LR
It's odd for sure, my car should be perfectly balanced. I use the Xray balancing posts and then allow the low side to sit on a scale to measure the exact weight. Right and left are within 1 gram on the rear, and 2 grams on the front.
I then used the Xray tweak station to ensure everything was completely square there as well.
My setup was not quite ideal this weekend. Interestingly there were two left hand corners giving me a hard time where I felt like I needed more turn-in and usually ended up washing the front a bit which would have increased my RF tire wear. Toward the end of the race this eventually caused a slight spin as the tiny LR tire because the droop setting changed by so much.
09-17-2007, 01:47 PM
#1958
Oh, and the track is resurfacing again today with a more aggressive sand mixture so I have no idea how we're going to make a 60 minute race at the nationals without some 50 shore tires.
I tried 42f/45r on this day, and just couldn't generate enough grip even though the tire wear was high.. Hopefully the new non-water based sealer will fix this problem.
I tried 42f/45r on this day, and just couldn't generate enough grip even though the tire wear was high.. Hopefully the new non-water based sealer will fix this problem.
09-17-2007, 02:26 PM
#1960
I prefer to use wheel nuts that have serrated flange, it cuts into the wheel rim when you tighten it, you'll never loose it again. Serpent has them as well, part #SER 801217.
For uprights and arms, I make scratches in the threaded holes with a small screw driver all the way around (try not to damage the first few threads), I don't use loctite on these parts and have no issues with pivot balls or nuts backing out...
For uprights and arms, I make scratches in the threaded holes with a small screw driver all the way around (try not to damage the first few threads), I don't use loctite on these parts and have no issues with pivot balls or nuts backing out...
09-17-2007, 02:45 PM
#1962
Oh, and the track is resurfacing again today with a more aggressive sand mixture so I have no idea how we're going to make a 60 minute race at the nationals without some 50 shore tires.
I tried 42f/45r on this day, and just couldn't generate enough grip even though the tire wear was high.. Hopefully the new non-water based sealer will fix this problem.
I tried 42f/45r on this day, and just couldn't generate enough grip even though the tire wear was high.. Hopefully the new non-water based sealer will fix this problem.
09-17-2007, 02:57 PM
#1963
I believe most of the work was done this morning and will be completed by this coming weekend so it should fresh for the pro series, bring a lot of tires and hope for a short main :P
I've actually had the kawahra nuts back off on me twice in a row and ended up having to change the wheel to get them to stick properly again. Apparently you can only tighten them with the ultimate death grip 2-3 times max.
I've actually had the kawahra nuts back off on me twice in a row and ended up having to change the wheel to get them to stick properly again. Apparently you can only tighten them with the ultimate death grip 2-3 times max.
09-17-2007, 04:00 PM
#1964
mugen and serpent make wheel nuts that dont come off.
09-17-2007, 04:37 PM
#1965
Suspended
When making these grooves I have a pivot ball inside the upright so I don't damage the area where the pivot ball sits. You can do the same with threaded holes in suspension arms, just be extra careful when screwing the pivot balls and nuts back in.
Last edited by GK; 09-17-2007 at 07:05 PM.