XRAY - Model racing cars

Can anyone suggest an alternative to the Xray springs for the T4 ?

Nobody in the UK has any stock of the 2.5 springs and haven't had for weeks. The other option I looked at were the AME ones but those are out of stock too.

Can anyone help ?

thanks

I'm afraid I don't know of any UK shops that would carry them
I have ordered some springs from Reflex Racing in the US as they also do different rates but not too sure how long their delivery would take.

Skiddins

repeat post

Thanks anyway.

How have you found the progressive springs indoors on prima GT carpet ? I changed from a T3-12 to a T4 and have had really unpredictable handling ever since, it feels like the rear is collapsing mid corner and losing traction giving unpredictable oversteer.

That's interesting, when I first put the car down at Newbury I couldn't believe how nice the car was too drive with the kit carpet setup (I also came from a T3'12)

I have since tweaked the setup to make it a bit more aggressive, which made it faster.

Here is a setup which doesn't use 2.5 rear springs;


I have also known drivers use 2.5-2.8 fronts with 2.7 or even 2.9 at the rear.

Yes, I do use 2.5 rear springs at the moment, but I managed to get some very competitive setups without them

Skiddins

Thanks, i'll give that a go on sunday and see how I get on.

So sunday was another day of trial and error.

Started the day with kit carpet setup but 1000 oil in the rear diff and a front diff with 1,000,000 oil. The car was horrible, virtually undriveable with the back end trying to overtake the front every time I put in any power at all.

Checked everything over, nothing binding or tight. Had someone else check everything over, all OK.

Tried a fresh set of tyres, increased front droop, removed the rear anti-roll bar, increased rear camber all improved the car slightly and by the final I was able to set the quickest lap in my class but the car was extremely difficult to drive consistently still very loose at the rear under acceleration. On the faster corners the rear was planted and I could carry more corner speed on a tighter line than others but couldn't find any confidence accelerating out of the tighter stuff.

I'm not sure where to go next. Can someone make any suggestions ?

Put a spool back in the front. That should make the car a lot more stable.

Fill out an Xray setup sheet on here then post a link so drivers can look at exactly what you have now.

Also some photos or links to the track is always helpful.

Skiddins

Hopefully this links to my setup sheet from yesterday.

xform/index.php?act=view&ID=357&setup=t4

Any help would be hugely appreciated.

The simplest thing I can see to change is to reduce the upper front links (inner) to 1mm and the rears down to 0mm

Skiddins

Thanks for the suggestion, i'll give that a go. It really doesn't feel as if the car is sitting down into the rear and biting, just spinning up the rears and losing traction.

One more thing to try is belt tension. If the rear is too tight and/or the front too loose, this will give a 'rear wheel drive' feeling on the power.

I run the rear on the loosest setting and the front one down from the tightest, but this will vary from one car to another.

Was 6 front droop your final setting or did you add more than that? Adding more is worth a go if not.

For a number of reasons yesterday was the first time i'd had the opportunity to put all the advice into action.
All I can say is WOW, and thanks for the advice.

Some 2.5 rear springs, a 1.3 rear roll bar and some adjustment to the belt tensions have completely transformed the car. I just missed out on FTQ and finished 2nd in the A final challenging drivers I've never been able to get anywhere near. The car was so driveable I could set consistent lap times and still had the fastest lap of the day.

Just when I think i'm getting an understanding of how to approach setup I discover I've still got a lot to learn. So thanks again for the advice.