Lose some weight, go faster

[Polly Grigora]

https://www.demon-tweeks.com/uk/brise-permanent-ma...


https://www.demon-tweeks.com/uk/brise-12v-competit...

[TwinKam]

Polly Grigora said:

https://www.demon-tweeks.com/uk/brise-permanent-ma...


https://www.demon-tweeks.com/uk/brise-12v-competit...

Only 20A, so for race use only, Penny.
You might as well just run a total-loss battery, a lithium one at that.

[Polly Grigora]

TwinKam said:

Polly Grigora said:

https://www.demon-tweeks.com/uk/brise-permanent-ma...


https://www.demon-tweeks.com/uk/brise-12v-competit...

Only 20A, so for race use only, Penny.
You might as well just run a total-loss battery, a lithium one at that.

You make a very good point, battery voltage on its own is a big concern to me due to battery terminal voltage reaching as low as approx 12 volts

Battery voltage could be as high as 14.5 volts with light-weight alternator, voltage above 12 always keeps me happy when thinking about quality of ignition coil HT voltage and fuel pump speed, am a touch funny that way though

Yes, definitely for race use and daytime driving only, total current draw of all engine circuits would need to be known before choosing a 20 Amp or 40 Amp output alternator or higher

Unit could be fitted at home before driving to the track in the daytime

The 93mm unit can be supplied @ 40, 60 or 95 Amps output which really does open up the job, 95 Amps is a st load for a TVR

[Polly Grigora]

Mmmmmm, there's also this

https://www.amazon.com/XS-Power-D1400-Battery-Term...

Probably loads of them about the shops

[TwinKam]

Now I like the idea of a 14v battery!

[LucyP]

You can't just swap a 12v battery for a 14v battery. Your alternator will not produce enough power to charge it.

This video from a US guy (featuring the very same battery as posted above) who writes books on the subject, explains what changes you need to make. I doubt that even he is familiar the the dodgy electrics in a TVR!

https://www.youtube.com/watch?v=G2mbNcJF8sE

[TwinKam]

LucyP said:

You can't just swap a 12v battery for a 14v battery. Your alternator will not produce enough power to charge it.

This video from a US guy (featuring the very same battery as posted above) who writes books on the subject, explains what changes you need to make. I doubt that even he is familiar the the dodgy electrics in a TVR!

https://www.youtube.com/watch?v=G2mbNcJF8sE

Thank you for your wisdom, Luke, but we were talking total-loss race car systems... ...at least, I was.

[Polly Grigora]

TwinKam said:

Now I like the idea of a 14v battery!

Me too, especially for a drag strip run without alternator fitted and probably some good track time

[TwinKam]

Polly Grigora said:

TwinKam said:

Now I like the idea of a 14v battery!

Me too, especially for a drag strip run without alternator fitted and probably some good track time

...rally special stages, hill climbing, short oval...

[macdeb]

Note to self; Have fillings taken out next time at dentist.

[DangerousDerek]

macdeb said:

Note to self; Have fillings taken out next time at dentist.

Just leave your wallet will save you more weight Mac

[NicBowman]

Most of us could lose a few pounds, check the scales! Cheaper than a new bit…



Nic