cloud9

iTrader: (4)

/\ what he said

BryanDowns

iTrader: (2)

Interested, depending on location and if in the trunk "where".

nrattV7

iTrader: (1)

0. SakeBomb Garage - Trunk Mount (passenger side)
1. TomU - Bin Mount (passenger side)
2. Brekyrself - Engine Bay
3. Ad4ever - Trunk Mount (passenger side)
4. thekidinthefd - Trunk or Engine Bay but must be completely reversible.
5. Trevor Rabb - Engine Bay
6. Cloud9 - Trunk (tire well) or Engine bay w/Greddy V-Mount
7.NRattV7 - Trunk, preferably passenger or tire well and need to have room for roll bar.

Orbitalmovment

iTrader: (2)

0. SakeBomb Garage - Trunk Mount (passenger side)
1. TomU - Bin Mount (passenger side)
2. Brekyrself - Engine Bay
3. Ad4ever - Trunk Mount (passenger side)
4. thekidinthefd - Trunk or Engine Bay but must be completely reversible.
5. Trevor Rabb - Engine Bay
6. Cloud9 - Trunk (tire well) or Engine bay w/Greddy V-Mount
7.NRattV7 - Trunk, preferably passenger or tire well and need to have room for roll bar.
8. Orbitalmovment - Trunk mount passenger side

ROTARYFDTT

iTrader: (4)

9. ROTARYFDTT - bin mount

SpeedCrazie

iTrader: (23)

0. SakeBomb Garage - Trunk Mount (passenger side)
1. TomU - Bin Mount (passenger side)
2. Brekyrself - Engine Bay
3. Ad4ever - Trunk Mount(passenger side)
4. thekidinthefd - Trunk or Engine Bay but must be completely reversible.
5. Trevor Rabb - Engine Bay
6. Cloud9 - Trunk (tire well) orEngine bay w/Greddy V-Mount
7.NRattV7 - Trunk, preferably passenger or tire well and need to have room for roll bar.
8. Orbitalmovment - Trunk mountpassenger side
9. ROTARYFDTT - bin mount
10. SpeedCrazie - Driver Side Bin Mount

IamRobbyah

0. SakeBomb Garage - Trunk Mount (passenger side)
1. TomU - Bin Mount (passenger side)
2. Brekyrself - Engine Bay
3. Ad4ever - Trunk Mount(passenger side)
4. thekidinthefd - Trunk or Engine Bay but must be completely reversible.
5. Trevor Rabb - Engine Bay
6. Cloud9 - Trunk (tire well) orEngine bay w/Greddy V-Mount
7.NRattV7 - Trunk, preferably passenger or tire well and need to have room for roll bar.
8. Orbitalmovment - Trunk mountpassenger side
9. ROTARYFDTT - bin mount
10. SpeedCrazie - Driver Side Bin Mount
11. Iamrobbyah - trunk

A buddy of mine just had SBG do the kit. Chris at SBG posted some pics on the fbook NorCal RX7 page -- it looks clean and simple.

cloud9

iTrader: (4)

It's a private group. Can you copy the pic here?

IamRobbyah

My pleasure:

cloud9

iTrader: (4)

Thank you!

Wompa164

iTrader: (4)

0. SakeBomb Garage - Trunk Mount (passenger side)
1. TomU - Bin Mount (passenger side)
2. Brekyrself - Engine Bay
3. Ad4ever - Trunk Mount(passenger side)
4. thekidinthefd - Trunk or Engine Bay but must be completely reversible.
5. Trevor Rabb - Engine Bay
6. Cloud9 - Trunk (tire well) orEngine bay w/Greddy V-Mount
7.NRattV7 - Trunk, preferably passenger or tire well and need to have room for roll bar.
8. Orbitalmovment - Trunk mountpassenger side
9. ROTARYFDTT - bin mount
10. SpeedCrazie - Driver Side Bin Mount
11. Iamrobbyah - trunk
12. wompa164 - bin mount

SakeBomb Garage

iTrader: (17)

Hey Guys!

We appreciate the interest! We've narrowed this down to the passenger side trunk location for a number of different reasons. This includes the least amount of modifications, strongest pick up point locations and shortest and most direct run to the engine bay for the power cable. Plus the weight of the battery weighs less to nothing, thus it's location isn't a huge factor in placement due to the new lithium Ion technology.

Wheels are in motion getting the final adjustments, overall this mount is coming out great!

Wompa164

iTrader: (4)

Will this mount in the same location as your fire extinguisher kit?

IamRobbyah

Hate to back out like this, but I went ahead and bought the bracket itself and will be doing the wiring myself. I haven't seen much movement on the GB and I'd like to get moving with the project.

Thanks for making such quality products SBG!

0. SakeBomb Garage - Trunk Mount (passenger side)
1. TomU - Bin Mount (passenger side)
2. Brekyrself - Engine Bay
3. Ad4ever - Trunk Mount(passenger side)
4. thekidinthefd - Trunk or Engine Bay but must be completely reversible.
5. Trevor Rabb - Engine Bay
6. Cloud9 - Trunk (tire well) orEngine bay w/Greddy V-Mount
7.NRattV7 - Trunk, preferably passenger or tire well and need to have room for roll bar.
8. Orbitalmovment - Trunk mountpassenger side
9. ROTARYFDTT - bin mount
10. SpeedCrazie - Driver Side Bin Mount
11. wompa164 - bin mount

Manny_Apex

iTrader: (1)

Has there been any updates on this project SBG? I'm interested in seeing what you guys are able to do regarding the V-Mount solution

David Hayes

iTrader: (6)

Just quick note on the use of an alternative battery for this kit, the Antigravity ATX-30 HD:

https://antigravitybatteries.com/pro...-oem/atx30-hd/

The HD is a heavy-duty version of the ATX-30 proposed for this kit. While the HD weighs a bit more than the standard ATX-30 (7.81 versus 5.75 lbs.), it shares the same case footprint (6.5 x 5 x 6.8 inches (LxWxH), has more power (970 versus 880 CCA), and more reserve Amp-hours (48 versus 32).

Why consider the HD over the standard ATX-30? The standard ATX-30's RESTART technology serves as a power cutoff for the battery, using an algorithm to continuously monitor the health and voltage of the battery. When the battery sees a continuous drop in voltage, it will automatically shut off the battery somewhere between 12.45 - 12.70 volts, sending it to a zero voltage condition as a failsafe. While the RESTART feature ensures your battery will have enough power to subsequently start your car, the RESTART feature essentially renders your battery unusable when it triggers the RESTART function.

I know this as I ordered a regular ATX-30 and recently installed it in my car. I assumed the battery would come fully charged, but Antigravity tells me that all lithium batteries drop to a stable, lower voltage level around 13.1 volts. So, my battery arrived with a little under 13 volts, and when I keyed the ignition on the car to calibrate my SpeedHut gauges, the battery triggered the RESTART function, sending the battery to zero volts and shutting down the car. While this was just an inconvenience as I wasn't driving at the time, the RESTART feature shut down could become an issue when driving.

I called Antigravity and the techs explained to me that the more appropriate battery for an FD, particularly one that has been modified, is the HD version, which does not include the RESTART function - it does include a nifty battery capacity indicator. The HD allows for deeper discharge cycles of the battery without the fear of the battery triggering an auto cut off function. Per the techs, the regular ATX-30 is intended for motorcycle use, although they have seen the battery successfully used on cars with small 4 cylinder engines. On the other hand, they state the HD version of the ATX-30 is intended for use on modified performance autos and has been successfully used on cars such as Corvettes and the FD.

So, my regular ATX-30 is on its way back to Antigravity for an upgrade to the HD version. I offer this info as maybe SakeBomb may want to offer both versions of the battery for purchase.

Orbitalmovment

iTrader: (2)

We're curious where this is at, any updates for us Sakebomb?

wthx100

After having to replace 2 lithium ions in other cars costing me 1k+ the low voltage cutoff is well worth it.

David Hayes

iTrader: (6)

^ Yes, I would agree - IF the battery was designed for a car. It is not. Note you can find the battery under "Motorcycles" - https://antigravitybatteries.com/pro...s/restart-oem/

So, the ATX30 is a motorcycle use intended battery and its RE-START feature uses algorithms for the battery that are programmed to monitor and control motorcycle levels of voltage and draws. This is why the RE-START feature activates at a much higher voltage level (12.45 - 12.8) than what would be intended for a car. Because the battery's RE-START feature was not intended for car use, especially in cars like ours, it can have adverse effects under operating conditions for any device that draws directly from the car battery. For example, think that second fuel pump you have wired to the battery or maybe your aftermarket ECU. When the second fuel pump activates, on most of our cars it will draw directly from the battery and most likely trigger the RE-START feature. That can have significant adverse results as the battery provides ZERO power when the RE-START feature is triggered. You have to press the RE-START button on the top of the battery to reset the battery to normal operation.

So, why then does the ATX30 HD work on the RX7? While it too is a motorcycle battery, it was developed for use on Harley V-Twins that need much higher voltage and AMP draws. Thus, the ATX30 HD is a better fit, as it draws much deeper than the ATX30 while allowing your components connected to the battery to properly operate.

But don't believe me, call Antigravity directly and ask them. They will tell you that they have had numerous reports of problems with cars attempting to use the regular ATX30, in contrast to much success with the ATX30 HD on cars like ours, Supras, and high-performance V8s. This is why I swapped out my ATX30 for the HD version and it's working like a champ for me.

Lastly, if you really want to keep the RE-START function, but on a battery designed specifically for automobiles, check out the Antigravity Group-51R Car Battery:

https://antigravitybatteries.com/pro...ive/ag-51r-rs/

It comes with a RE-START function that was developed for automobiles and also offers a cool Battery Management System (BMS). It does though cost more ($660) and weighs 8.5 lbs. versus 7.6 for the ATX30 HD. Both the ATX HD and the 51R would be good choices IMO.

Hope this helps. Just want to let you all know about the potential issues so you can make an informed decision. Kudos to SakeBomb for putting together a lithium battery kit for RX7.

SakeBomb Garage

iTrader: (17)

We specifically would not recommend a non-restart / auto-cutoff version of ANY lithium-ion battery. This is because dropping below 10-11v on a li-ion battery can cause a dangerous state if the recharge rate is unregulated... breaching the internal walls of the cells when recharging the battery from a state under 10-11v (as jumping it and letting the cars alternator charge the battery for instance). After a few cycles of this you can create an issue with internal cell damage... we've had cars here at the shop meltdown and nearly catch fire after they've been recharged incorrectly.

As a result, we will ONLY use the Restart batteries on any cars here in our shop or sell anything other than re-start batteries. We specifically DO NOT recommend any lithium batteries (antigravity or other brands) that does not have the restart feature that disconnects the battery at 12.5v to prevent it from being pulled down below a safe level.

cloud9

iTrader: (4)

The reasons listed above contributed to my decision to install a solid state battery isolator along with my ATX-30 HD. The regular ATX-30 with restart just didn't offer enough juice for my application/comfort level (and Antigravity agreed). The HD version delivers in this regard and with the battery isolator, along with the other protections it provides, I can put the battery in standby mode (.001A draw) at anytime.

From a liability standpoint though I can appreciate SB's policy.

David Hayes

iTrader: (6)

^ While I appreciate the update from SB, the information is not correct concerning Antigravity. Most of Antigravity's batteries, including the ATX-30 HD, have an integrated battery management system (BMS) built-in. The purpose of this system is to prevent exactly what is referenced by SB. So, the ATX-30 HD and most of the other Antigravity batteries are protected against an improper discharge and charge situation like the one referenced by SB. But don't take it from me, call Antigravity directly and they will confirm.

So, if one is going to use a battery not designed for automotive applications, the recommended battery for the FD is the ATX-30 HD, not the regular ATX-30. It contains the above referenced BMS to protect against unregulated recharge problems and also avoids the issues caused by the regular ATX-30 restart, motorcycle designed feature. Again, this technology is not designed or calibrated for use in a car and in particular, a modified FD.

I think we can all agree that the best battery for use would be any of the ones designed by Antigravity for automotive use such as the 51-R. All of the automotive series have the restart technology favored by SB but are specifically calibrated for automotive use. These batteries are also very light - I think the 51-R is around 8.5 lbs. - so you get the best of all worlds.