Speedo choices

[BarPilot]

IVA opinion for maximum design speed of the Ultima is?

Reason I ask is that the clock set I'd prefer reads to 160mph (don't want the white Ultima units nor a digital dash).

[Justaredbadge]

Dunno what the iva opinion is, but a g50 on the back of an LS? is supposed to go to 187mph iirc.

someone did a very good table of gearbox final drives and speeds etc a while ago.

[crossram]

ebay

[356Speedster]

If I recall... the IVA paperwork asks for a few pieces of info on the car and max speed was one of them. I then had to provide evidence that the digital speedo would read past the max speed. Presumably if you're using an analogue gauge you'll need to tally up your stated top speed with the speedo. They will also be checking for the correct speed rating on tyres vs your top speed, etc.

Like all things IVA, how this is interpreted & enforced will be different per test station. If you put your max speed down as 155mph to cover your speedo, then show the tester a 1ton car with 500+bhp, he might not believe you.... it could be a risk and will depend on the diligence / mood of the tester, I suspect.

[BarPilot]

356Speedster said:

If I recall... the IVA paperwork asks for a few pieces of info on the car and max speed was one of them. I then had to provide evidence that the digital speedo would read past the max speed. Presumably if you're using an analogue gauge you'll need to tally up your stated top speed with the speedo. They will also be checking for the correct speed rating on tyres vs your top speed, etc.

Like all things IVA, how this is interpreted & enforced will be different per test station. If you put your max speed down as 155mph to cover your speedo, then show the tester a 1ton car with 500+bhp, he might not believe you.... it could be a risk and will depend on the diligence / mood of the tester, I suspect.

Thanks for that info. I could just use a cheap digital version and then fit my preferred clock at a later date. I'm liking the Stack gauges.

[356Speedster]

BarPilot said:

Thanks for that info. I could just use a cheap digital version and then fit my preferred clock at a later date. I'm liking the Stack gauges.

If you're fitting a temp speedo, I'd suggest you make it an analogue one. That way the tester can see it's max speed... if you go digital, you'll need documentation from the manufacturer to prove it's max reading.

[BarPilot]

Cheapest analogue then.

[V8Dom]

Justaredbadge said:

Dunno what the iva opinion is, but a g50 on the back of an LS? is supposed to go to 187mph iirc.

someone did a very good table of gearbox final drives and speeds etc a while ago.

me!!!

Stig put it in the stickys somewhere

[V8Dom]

BarPilot said:

IVA opinion for maximum design speed of the Ultima is?

Reason I ask is that the clock set I'd prefer reads to 160mph (don't want the white Ultima units nor a digital dash).

Im guessing that is the stack instruments fitted to the lotus and vx220... they do do a 200mph option if you order it new???

pm

[DHGTR]

Would this one cover it?

[Storer]

BarPilot said:

Cheapest analogue then.

If it's just for IVA why not use a s/h Ultima one.

Can't remember if I still have my old one.


Paul

[BarPilot]

DHGTR said:

Would this one cover it?

This may work!

[BarPilot]

Storer said:

If it's just for IVA why not use a s/h Ultima one.

Can't remember if I still have my old one.


Paul

Fair way from IVA at this point but could be an option if you find it.

[UltimaCH]

DHGTR said:

Would this one cover it?

I love that and it could be a great piece of kit to have on the dash, even if it doesn't work. It would certainly get people talking when they see it...

[Storer]

UltimaCH said:

DHGTR said:

Would this one cover it?

I love that and it could be a great piece of kit to have on the dash, even if it doesn't work. It would certainly get people talking when they see it...

Looks like a part for 'Thor'................



Paul

[UltimaCH]

Good idea. I had forgotten your "crazy" project