GT3 Proxy 2020_Edition_build thread

[Brumos RSR]

IMG_5433.JPG

Ok, don't listen to me as I keep creating confusion on accident. This is THE LAST Gt3 car I'm ever testing.

[Radarek]

[Brumos RSR]

[Radarek]

Hahahahahahahaha :mrgreen: :mrgreen:
Just in case if I do good testing Thursday...

[SuperSlab]

..one step backwards and some Sideways as well....

OK, the good news: the Scaleauto is without question my best option... for now. Today's testing pretty much eliminated the NSR Merc and the Sideways Huracan. That is the one piece of good news.

The other piece of good news is that I broke the 6 second barrier. But only just: 5.974. OK, so that is not too far off the best lap time of the Gp 5 proxy round held at Luf's earlier this year: that was a 5.958. So that sounds OK, doesn't it?

Yes, but.... Always the but!

Firstly: this is my home track. If I am slower than the fastest guys here, what chance would I have on other tracks? Not good.

Secondly: this was done with fresh tyres. As the tyres wore off the glossy finish and started roughing up a bit, I was struggling to stay in the 6.0 range.

Thirdly: the car was not that easy to drive when I did the sub-6 second laps. I ended up adding a bit of weight: it did make the car easier to drive but now it was slower still! The bad news is that I was now around the 6.1 second mark. The good news is that I could do this quite consistently and relatively comfortably.

But the bottom line is I need more speed.

For comparison:

I also ran my 2018 Gp 5 proxy Capri. And it was Not Good! Not sure what went wrong but I could only get a best lap of 6.338: this is like 3/10ths off my testing. I did not spend any time trying to get to the bottom of it as that was not a priority. But I need to look into this at some stage.

I also tried my Sideways BMW 320 that was under consideration for the 2108 Gp 5 proxy right up to the last second. In the testing for that proxy I got a 6.151 out of it, the best I could do today was a 6.217. Close but not quite.

The Merc was a bit better than before with some minor tweaks that I had applied plus the NSR rubber tyres. But still I could only get a 6.174 out of it. Nice to drive though.

The Huracan could only manage a 6.298 with urethanes so I did not bother trying anything else.

So while I did clear up some questions, I am still not happy with where I am. Next steps? I did not spend enough time at Luf's today, so I will do some more experimenting on Friday evening before our regular weekly racing. I still have a few things to try, such as coating the front tyres, playing around with body and pod float, some weight tuning etc etc. Not sur ewhat that will get me though.

I still have one left field alternative that I will be exploring over the next week or so, but time is running out.... ​​​​​​​​​​​​​​

[Fast Co.]

Alwyn, maybe the car is not at fault. Could it be possible that perhaps the driver was off his usual pace?

[chrisguyw]

Well, some progress has been made...........the chassis is finished, and I am quite pleased with how it runs, ...despite still needing considerable finishing work on the rear tires.
Anyone running one of these likely will have noticed the long guide lead and long wheelbase.......weight and weight placement decisions to be made ;)

Next, on to the bodywork.........

Cheers
Chris Walker

[SuperSlab]

[SuperSlab]

[Fast Co.]

[chrisguyw]

[wanabgts]

[chrisguyw]

Hi Zack, Hopefully it is the camera angle, ....or,... more likely my eyes, but, from your pic., it would appear that the axles are not parallel on your 30K Shark motored car......it looks like the positioning of the rear axle is "off", which will make the car veer to the right.

I am hoping it is my eyes or the camera angle.........I hate to be the bearer of bad news ;)

Cheers
Chris Walker

[wanabgts]

Chris, This pod does have a 5ish degree angle on the motor if that is what you are looking at. The car itself seems to be pretty square, but it could also be the camera.

Thanks for looking out!

Zack

[chrisguyw]

Hi Zack, Hopefully it is the Camera...........If you draw an imaginary line along the front left wheel rim, to the left rear wheel rim ......the left rear looks considerably "off". It could be that the pod is skewed in the chassis plate (pushed to the right side of the main chassis), or, heaven forbid, the pod bushing cups are "off."
One way to check......remove the guide, and the spur...and free roll the chassis on a counter top/flat surface.....if it pulls to the right, a fix is in order.

I do hope it is the Camera, but, it does just not look right to me.

Cheers
Chris Walker