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Old 08-11-2017, 08:55 AM   #796
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Christian

Is this kit suitable for low to med traction asphalt with hot weather conditions? Talking bout 50 deg C mid day temps. How is the flex of this chassis as compared to the original GZ1?

Thx

DIXON
Yes, definitely. It should have more steering in hot weather conditions. The CF gets flexible when it hot, so it loses some of it's strength and this robs response. The Flex is similar but it moves some of the flex to the center rails instead of the bottom bulkheads. Additionally we can tune with different thickness rails for more or less flex.

We also have a third bulkhead screw under the chassis and a post that can tie the bulkheads together for more structural integrity so there is a lotbof possibility for flex tuning.

I am not necessarily sure the car will be better in low, low bite or cold temps, so we are not necessarily phasing out the previous bulkhead design, but hot weather, I would at least consider the alloy lower arms.

Another thing we focused on this version was to try to enhance reliability further. At this point, the car is pretty tough if you ask me.
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Old 08-11-2017, 08:57 AM   #797
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Will there be a full kit available soon incorporating all the new updates?

Thanks!

Mike
Yes Mike. Maybe less than a month for our '18 or perhaps "GZ2" platform. There may be 2-3 things different with it, (steering arm revision for stop adjustment, perhaps abset screw to tighten the diff cams- right now we are using foam tape) but essentially this conversion will allow you to change a Gz1 or a gz1 2017 to a new spec kit.
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Old 08-11-2017, 09:03 AM   #798
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On the diff cams- in order to not bind the bearings, we toleranced them to leave about a 0.2 mm gap with the upper arm mounts. This gives a little bit of play that we eliminate by using some body foam spacer tape, 1mm thick. This compresses when you tighten the upper arm mount and eliminates the slop without binding the bearings. We found this to be a trick that frees upbthe drive train further and has a "dampening" effect on the drivetrain. To me, the car rolled freer through the corners and it translated into more corner speed.
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Old 08-11-2017, 09:19 AM   #799
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The updates look amazing. I cannot wait to try them out. Thank you for the continuing advancement of the Gizmo. It is a really capable TC car straight out of the box.
Bravo, Cristian!
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Old 08-13-2017, 08:31 AM   #800
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Really good test session yesterday at n control with the hot weather conversion kit.

After working all day and making steady progress, Larry Myers joined me at the track and we worked together on further improving the set up. Focusing on making the car better on used tires was our main focus and we feel like we had a HUGE breakthrough yesterday.

Towards the end of the day, we decided to throw on a new set of tires on my car and eventhough I have been running a motor that was visibly down on power from some of the faster cars, I managed to turn only the second 14.7 second lap on the track ever. This was faster than the nats warmup and with less traffic on the track. I know with a better motor we could have had another 2 tenths.

Biggest change was springs. Threw on some YOKOMO RP progressive springs and the car came alive! Improved by 3 tenths on old tires. 2.8-3.0 in the rear with the inside lower arm hole with the mounts all the way out and 2.6-2.8 on my traditional position in the front.

I'll post a set up soon. Get some RP springs if you are racing on asphalt.
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Old 08-13-2017, 09:14 AM   #801
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which springs would be better for untreated asphalt? will these fit the 1st edition stock gizmo shocks?

Last edited by LOW ET; 08-13-2017 at 09:38 AM.
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Old 08-13-2017, 11:04 AM   #802
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Maybe 2.6-2.8 all around? However the rp springs maybe too stiff. I would try xray 2.3-2.6 maybe all around on lower bite with the shock positions mentioned.

The original car and the '17 could very well be better for low grip mild weather and cold conditions. But the set up changes should transfer over. Won't know how good the new car is in the cold until it gets cold around here again.

The new conversion just basically drives in the heat like it drives in the cold. I am really excited. I was off pace at the warmup from the excessive push the car had. Still looking for a tid more steering on the second run of tires, but it was Faster than it was on new tires before on second runs yesterday.
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Old 08-13-2017, 11:33 AM   #803
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cool, thanks for the info. i have the original gz1 with the version 2 upper suspension
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Old Yesterday, 10:58 AM   #804
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Low ET - get yourself the short shock towers and Xray short shocks. The reaction of the car to the change of directions is even better.
I currently run the version 2 upper suspension, hard lower arms, 2017 upper chassis rails and the narrower 2017 aluminum chassis on black carpet and it is insane. I can't wait to try the newer parts to see what they do on carpet.
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