620R on 5th Gear tonight.

[Anthony Micallef]

Just a reminder that the 620r is on 5th Gear tonight going head to head with the Ariel Atom.

[Andy1912]

Which channel? Thought 5 but can't see it in the schedule...

[nosbigkin]

I think its on one of the discovery channels

[Jmracing66]

My Sky app is telling me its on at 9pm on the History Channel...Which seems a bit odd.

[Kiltie]

It's been on the History Channel this year (previously on Discovery).

History is Sky 529 (530 +1) or BT 432.

21:00 this evening.

[Kiltie]

Don't know who Rebecca is. I suspect they mean Vicki.

[framerateuk]

Thanks for the heads up. Series link added!

[Andy1912]

Great, thanks for that.

[Anthony Micallef]

Apologies I should have said it was on the History channel.

[ghibbett]

Kiltie said:

Don't know who Rebecca is. I suspect they mean Vicki.

Rebecca Jackson. Worth watching

[Andy1912]

ghibbett said:

Rebecca Jackson. Worth watching

She was very likeable and managed to stay apparently pretty cheerful through the night - more than can be said for her co-driver....

[tomwoodis]

Absolutely, he was a right grumpy old sod

Bit dissapointed the 620r was slower than the atom but then again it does have more power. Was it me or did it look like both of them were driven pretty slowly around the track?

[k20erham]

I'm not surprised the 620 was slower did you hear her on the limiter instead of changing up? I don't know what the torque curve is like on those but I'm sure she's way past the sweet spot with forced induction

[panickyjabofoppo]

I thought the 620r used a centrifugal charger? If so, the boost and power will increase with rpm all the way to the limiter.

[jeffw]

It uses a Rotrex so it will just be making more power the more revs.

[jeffw]

panickyjabofoppo said:

I thought the 620r used a centrifugal charger? If so, the boost and power will increase with rpm all the way to the limiter.

Not strictly true, boost tends to stay pretty constant over 3000rpm (1.4 bar in my case, less on the 620R). You will find that power increases all the way to the redline unless they have geared the Rotrex to over speed.

This is my dyno plot for my Zetec Rotrex Phoenix