Phantom Grip LSD - Page 2 - Toyota Yaris Forums

cali yaris · 02-01-2011, 12:05 AM

six weeks since post #5. update, please

cfeng · 02-03-2011, 12:01 AM

does anyone else think this is a scam? the only pictures i see on their website are of a poorly machined block of metal.

cfeng · 02-03-2011, 12:11 AM

Apparently the two halves of the block put pressure on the diff gears. I took a class on optimizing gears, this sounds like bs. Anyways, I'll be happy to machine these for anyone, lets say for ~$200.

http://z31.com/mods/drivetrain/phantomgrip/

Nexus1155 · 02-03-2011, 02:14 AM

I like the enthusiasm, but I see a lot of phantom grips going for under $200 for JDM's. It would be cool to have something new on the market though.

cdydjded · 02-03-2011, 11:29 AM

Quote:

Originally Posted by cfeng

does anyone else think this is a scam? the only pictures i see on their website are of a poorly machined block of metal.

PH.jpg

cdydjded · 02-03-2011, 11:42 AM

Quote:

Originally Posted by cali yaris

six weeks since post #5. update, please

6 weeks?, try 9 months! : ). Here is you update, there is nothing to update. I never had it installed. Between family & my business I just had no time to get the car up to them to have it installed. Another factor was that there was not much interested in it here.

The unit works & yes some people have had issues. Some like it, some don't. Its not a scam & the company has been around for over 10yrs. The owner is the same guy that runs the NSCRA.

xnamerxx · 02-03-2011, 05:46 PM

From what I can tell it works similar to a Detroit locker without the dog teeth gears. If your into drag racing I can see it working great but for taking corners locking the axles isn't always the best solution. For the majority of people a KAAZ or Quaffe or even a Torsen(not sure of the yaris is able to get one of those) would be a better fit.

cali yaris · 02-03-2011, 05:52 PM

or OS GIKEN

xnamerxx · 02-03-2011, 10:58 PM

Looking at the design of the OS GIKEN it appears to be a clutch type differential with no spider gears. I wonder how that kind of design would compare to a eaton diff.
My only fear with a clutch type design is the heat generated during long hard cornering which may overheat the transmission/diff.

Very interesting design though to bad they don't list anything for the Yaris on their site.

Jason@SportsCar · 02-04-2011, 05:05 PM

Quote:

Originally Posted by xnamerxx

Looking at the design of the OS GIKEN it appears to be a clutch type differential with no spider gears. I wonder how that kind of design would compare to a eaton diff.
My only fear with a clutch type design is the heat generated during long hard cornering which may overheat the transmission/diff.

Very interesting design though to bad they don't list anything for the Yaris on their site.

They have it... We talked to them (OS Giken USA) last year when we started our project, they did some research and found they were available in Japan. I think Garm has one in stock, if he has not already put it in his car.

cali yaris · 02-04-2011, 05:36 PM

They have it -- and I have it. One in my car, and one on the shelf.

This is a superior diff to the Kaaz, I can tell you that.

Midnight Drifter · 02-05-2011, 05:14 PM

The Phantom Grip sounds great for launching. I always worry something's gonna break when I launch and my wheels hop-hop-hop-hop-hop-hop down the road.

cali yaris · 02-05-2011, 05:19 PM

^ TRD trans mount will fix that and it installs in 30 minutes.

Midnight Drifter · 02-05-2011, 05:27 PM

That however wouldn't solve the one-wheel spin that happens in the first place, I imagine?

rob323 · 02-08-2011, 12:27 AM

Quote:

Originally Posted by xnamerxx

My only fear with a clutch type design is the heat generated during long hard cornering which may overheat the transmission/diff.

That's never been a problem in any rally car that I know of and certainly hasn't been a problem in mine.

xnamerxx · 02-08-2011, 01:42 AM

The Rally cars that have been built where I work use torsen differentials with viscous coupling center differentials. But they are only rated to last 3 runs which is better than the motors which are only designed to last 1 run. Making 950 hp on a 2.1l is rough on drivetrain parts.

Ive seen that problem with rear wheel drive cars that don't have differential coolers. I know corvettes, cobras, and vipers have had issues with overheating the diffs when using a clutch based diff.

I prefer the design of helical gear differentials because their designs can bias torque from one wheel to the other as long as you have traction whereas clutch type diffs tend to just limit the slip so to speak. Guess I just prefer the feel of a gear based diff over a clutch based one.

rob323 · 02-08-2011, 02:26 AM

Quote:

Originally Posted by xnamerxx

Ive seen that problem with rear wheel drive cars that don't have differential coolers. I know corvettes, cobras, and vipers have had issues with overheating the diffs when using a clutch based diff.

Rarely a problem in front wheel drive cars cause the preloads aren't set anywhere near as tight as they are in rear wheel drives.

Quote:

I prefer the design of helical gear differentials because their designs can bias torque from one wheel to the other as long as you have traction

Yep, and for a street car they are perfect. Far from it in a circuit car or rally car when you are lifting wheels off the ground though.

rob323 · 02-08-2011, 02:29 AM

Quote:

Originally Posted by xnamerxx

The Rally cars that have been built where I work use torsen differentials with viscous coupling center differentials. But they are only rated to last 3 runs which is better than the motors which are only designed to last 1 run. Making 950 hp on a 2.1l is rough on drivetrain parts.

Careful there xnamerxx, next you'll be dropping names

02-01-2011, 12:05 AM	#19
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	six weeks since post #5. update, please __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-03-2011, 05:52 PM	#26
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	or OS GIKEN __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-04-2011, 05:36 PM	#29
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	They have it -- and I have it. One in my car, and one on the shelf. This is a superior diff to the Kaaz, I can tell you that. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-05-2011, 05:19 PM	#31
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ TRD trans mount will fix that and it installs in 30 minutes. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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02-03-2011, 12:01 AM	#20
cfeng Drives: Yaris 2010 Liftback Join Date: Feb 2010 Location: Massachusetts Posts: 64	does anyone else think this is a scam? the only pictures i see on their website are of a poorly machined block of metal.

02-03-2011, 12:11 AM	#21
cfeng Drives: Yaris 2010 Liftback Join Date: Feb 2010 Location: Massachusetts Posts: 64	Apparently the two halves of the block put pressure on the diff gears. I took a class on optimizing gears, this sounds like bs. Anyways, I'll be happy to machine these for anyone, lets say for ~$200. http://z31.com/mods/drivetrain/phantomgrip/

02-03-2011, 02:14 AM	#22
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	I like the enthusiasm, but I see a lot of phantom grips going for under $200 for JDM's. It would be cool to have something new on the market though.

02-03-2011, 05:46 PM	#25
xnamerxx 0-60 in slow Drives: light blue liftback Join Date: Aug 2009 Location: so cal Posts: 926	From what I can tell it works similar to a Detroit locker without the dog teeth gears. If your into drag racing I can see it working great but for taking corners locking the axles isn't always the best solution. For the majority of people a KAAZ or Quaffe or even a Torsen(not sure of the yaris is able to get one of those) would be a better fit.

02-03-2011, 10:58 PM	#27
xnamerxx 0-60 in slow Drives: light blue liftback Join Date: Aug 2009 Location: so cal Posts: 926	Looking at the design of the OS GIKEN it appears to be a clutch type differential with no spider gears. I wonder how that kind of design would compare to a eaton diff. My only fear with a clutch type design is the heat generated during long hard cornering which may overheat the transmission/diff. Very interesting design though to bad they don't list anything for the Yaris on their site.

02-05-2011, 05:14 PM	#30
Midnight Drifter Going Retro Drives: '09 Tacoma \| '90 Tercel Join Date: Aug 2010 Location: Monroe, NJ Posts: 148	The Phantom Grip sounds great for launching. I always worry something's gonna break when I launch and my wheels hop-hop-hop-hop-hop-hop down the road.

02-05-2011, 05:27 PM	#32
Midnight Drifter Going Retro Drives: '09 Tacoma \| '90 Tercel Join Date: Aug 2010 Location: Monroe, NJ Posts: 148	That however wouldn't solve the one-wheel spin that happens in the first place, I imagine?

02-08-2011, 01:42 AM	#34
xnamerxx 0-60 in slow Drives: light blue liftback Join Date: Aug 2009 Location: so cal Posts: 926	The Rally cars that have been built where I work use torsen differentials with viscous coupling center differentials. But they are only rated to last 3 runs which is better than the motors which are only designed to last 1 run. Making 950 hp on a 2.1l is rough on drivetrain parts. Ive seen that problem with rear wheel drive cars that don't have differential coolers. I know corvettes, cobras, and vipers have had issues with overheating the diffs when using a clutch based diff. I prefer the design of helical gear differentials because their designs can bias torque from one wheel to the other as long as you have traction whereas clutch type diffs tend to just limit the slip so to speak. Guess I just prefer the feel of a gear based diff over a clutch based one.

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