MYP on Gemini's

[Fourdoor]

Hey guys,

In the process of doing a 100% charge before getting the new results on the Dragy after changing from the stock 21" Uberturbine wheels (64 lbs each in the front, 68 lbs each in the rear) to the Gemini 19" wheels and stock all season tires (56 lbs each, front and back). So, I lost 16 lbs of rotating mass from the front axle and 24 lbs of rotating mass from the rear axle. I will post up results when I have them

Keith

 

[Fourdoor]

Here are my previous results when I was running on the 21" Uberturbine wheels. Full thread here: MYP SOC% vs performance with Dragy!

Sport Mode:

0-60 3.83 sec -0.75% slope
0-60 with 1' rollout 3.58 sec -0.75% slope
1/8th mile 7.75 sec at 93.35 mph -0.12% slope
1/4 mile 12.01 sec at 114.18 mph -0.12% slope

Chill Mode:

0-60 7.62 sec -0.27% slope
0-60 with 1' rollout 7.34 sec -0.27% slope
1/8th mile 10.31 sec at 72.65 mph 0.27% slope
1/4 mile 15.70 sec at 91.40 mph 0.27% slope

Here are my new results at 100% SOC on the Gemini wheels.

0-60 3.73 sec 1.15% slope
0-60 with 1' rollout 3.49 sec 1.15% slope
1/8th mile 7.69 sec at 93.47 mph 0.22% slope
1/4 mile 11.94 sec at 114.54 mph 0.22% slope

Chill Mode:

0-60 7.45 sec 0.09% slope
0-60 with 1' rollout 7.14 sec 0.09% slope
1/8th mile 10.19 sec at 73.42 mph 0.12% slope
1/4 mile 15.51 sec at 92.67 mph 0.12% slope

Looks like the lighter wheel and tire package helped in chill mode as well! In the other thread you can see that SOC had zero effect on Chill mode and significant effect on Sport mode... but lighter rolling stock improved both!

Later,

Keith

 

[Madsen203]

Thanks for posting. Any reason you couldn’t run the same route so you could keep the slope the same?
Looks like with a 1% slope increase, you shaved 1/10th.

I thought about switching to a performance and swapping the ubers for Gemini wheels. The lowered suspension is still a deterrent.

 

[jcanoe]

What do you think of the ride and the handling with the 19" Gemini wheels versus the 21" Uberturbine wheels, summer sport tires. Are the tires on the 19" wheels the OE Continental Procontact RX all season tires?

 

[DayTrippin]

The Geminis are a lot heavier than the Martians so even more gains can be had...

 

[easter]

Gemini with meaty tires look so gooood.

 

[Fourdoor]

Thanks for posting. Any reason you couldn’t run the same route so you could keep the slope the same?
Looks like with a 1% slope increase, you shaved 1/10th.

I thought about switching to a performance and swapping the ubers for Gemini wheels. The lowered suspension is still a deterrent.

I do the same section of road each time for the "sport" runs, the slope is very small, and a +/- 1% deviation between runs seems like a very small deviation in the measurment. I just include it because it is there

Keith

 

[Fourdoor]

What do you think of the ride and the handling with the 19" Gemini wheels versus the 21" Uberturbine wheels, summer sport tires. Are the tires on the 19" wheels the OE Continental Procontact RX all season tires?

These are on the stock tires. Ride is a bit better than the Uberturbine wheel and tire package. I doubt you would see any handling difference unless you take it to an autocross or road course... I don't see any handling difference in normal road driving.

Keith

 

[Fourdoor]

The Geminis are a lot heavier than the Martians so even more gains can be had...

I am looking into some 2021 18" M3 Aero wheels. Nobody knows if they fit on the back over the rear brake calipers... I am going to find out. If they don't fit I will look into some 18" martian wheels and sell the Aero wheels.

Keith

 

[jcanoe]

These are on the stock tires. Ride is a bit better than the Uberturbine wheel and tire package. I doubt you would see any handling difference unless you take it to an autocross or road course... I don't see any handling difference in normal road driving.

Keith

If you decide you like 19" Geminis and decide to keep them I suggest 44 PSI cold tire pressure with the Continental Procontact RX tires for a better more cushioned ride than 42 PSI.

 

[Fourdoor]

If you decide you like 19" Geminis and decide to keep them I suggest 44 PSI cold tire pressure with the Continental Procontact RX tires for a better more cushioned ride than 42 PSI.

I think they are right at 45 psi right now. When I picked them up they were at 36 psi, and I had to break out the pump to get them up to normal

Keith

 

[1QYKMY]

Pretty nice results! I am installing Rays Gram Lights (19x9.5) on my MYP and anticipate shaving a least 20 lbs per corner. That should not only help with acceleration but also reduce stress on the brakes and maybe even increase range a bit.

 

[Pianewman]

(to clarify, even though no one asked: The 19" wheels are actually APOLLO. Gemini refers to the aero wheel cover.)

 

[buddalun]

Do Apollo’s fit Model Y PUP?

 

[MrGoku]

What about a range test on the Gemini/Apollo vs Uberturbine for the MYP?

 

[Noflash]

(to clarify, even though no one asked: The 19" wheels are actually APOLLO. Gemini refers to the aero wheel cover.)

Where are you getting this info?

Tesla accessory store calls them "Gemini Wheels".
Model Y 19" Gemini Wheel and Winter Tire Package
Model Y Gemini Wheel Cap Kit

 

[jcanoe]

Where are you getting this info?

Tesla accessory store calls them "Gemini Wheels".
Model Y 19" Gemini Wheel and Winter Tire Package
Model Y Gemini Wheel Cap Kit

Tesla Parts Catalog. Parts Catalog

 

[Zoomit]

Tesla Parts Catalog. Parts Catalog

Yeah, basically the parts team and marketing team don’t always coordinate, nor do they seem to care about the discrepancy. The reality is that the marketing team has more power over owners, so most just call them Gemini’s.

Pictures of both kinds of “Gemini” wheels and screen captures from the EPC are in this thread:

19” Apollo wheels with Gemini caps

According to the newly-published Model Y Electronic Parts Catalog, they call the standard 19” wheel “Apollo” and the caps “Gemini”. Maybe someday they’ll offer other caps besides the Gemini style. I’m not holding my breathe as the Model 3 Aero caps take a lot of flack for their looks but...

teslamotorsclub.com

But this is off topic for this thread…

 

[Noflash]

Weird. Now I'm trying to make an association like the Gemini program covered the Apollo program, but that doesn't sound right. They should have called the wheels Lunar, and the hubcaps Apollo. That would've made more sense.

 

[boulder.dude]

Kinda depressing that MYP is faster with Geminis than with Ubertutbines.