Rotax Max

**ghinzani** · 10 May 2003, 19:53 (Ref:595637)

hey speedy king how do you get your Rotax to do 110mph???? have you taken it long circuit? my aims to do the last two rounds this year at Lydden and Silverstone - but 110 mph? sheeeiiisse!

speedy king · 10 May 2003, 19:53 (Ref:595638)

I've driven a Rotax Max at Daytona Milton keynes and turn 13 was not flat, but that's only because Rotax Max's are EXTREEEEEMLY fast! 110mph fast!! Their Thunderkarts can do turn 13 flat though

speedy king · 10 May 2003, 19:54 (Ref:595640)

Quote:

Originally posted by ghinzani
hey speedy king how do you get your Rotax to do 110mph???? have you taken it long circuit? my aims to do the last two rounds this year at Lydden and Silverstone - but 110 mph? sheeeiiisse!

Take it to Mallory Park

DSM · 11 May 2003, 21:33 (Ref:596353)

A rotax Max 130mph? A TKM 80mph? Over Beachy Head maybe. It may feel like it but don't kid yourselves guys. Do the sums on gearing/revs and you'll see that a TKM is 70 at Wigan, low 60s most other places and the Max will maybe do 90 given a long enough straight, more likely 80 or so.

DavidStHubbins · 12 May 2003, 04:08 (Ref:596569)

Maybe Speedy King is getting MPH and KPH mixed up??? The kind of speeds he is talking about belong in the shifter karts I reckon.

speedy king · 12 May 2003, 15:21 (Ref:597025)

Quote:

Originally posted by DSM
A rotax Max 130mph? A TKM 80mph? Over Beachy Head maybe. It may feel like it but don't kid yourselves guys. Do the sums on gearing/revs and you'll see that a TKM is 70 at Wigan, low 60s most other places and the Max will maybe do 90 given a long enough straight, more likely 80 or so.

I never said a Rotax max will do 130mph!! A TKM will do 70mph, a Rotax Max will do 110mph apsolute maximum on the longest straight at somewhere like Mallory Park (car racing circuit) which has a massive straight. Do you race these karts? Because i do and i have an on board data loger and Alfano

speedy king · 12 May 2003, 15:22 (Ref:597027)

On average a Rotax Max will do between 70mph and 90mph

DSM · 14 May 2003, 16:06 (Ref:598900)

Actually, Speedy, raced TKM for 5 years in both club and Super 1. Won over 40 races, a Club Champs in Junior and Senior and other things. Raced Max in 2000/01 in sprints and endurance, now race cars.
Have used PI data loggers when allowed and know exactly what the performance of these karts is.

DavidStHubbins · 15 May 2003, 06:02 (Ref:599354)

So who is lying?

I gotta get me a ROtax

**ghinzani** · 15 May 2003, 06:48 (Ref:599376)

Quote:

Originally posted by DavidStHubbins
So who is lying?

I gotta get me a ROtax

shame you and Janine dont live over here, I could get you a cracker very cheap!

DSM · 15 May 2003, 08:20 (Ref:599472)

Lying? I don't think anyone is lying, it's the eternal optimism of youth!!
It's actually a relatively easy exercise to calculate the speed of any fixed gear kart, using engine RPM, sprocket sizes and tyre circumferences. Try it and make your own mind up!

speedy king · 15 May 2003, 17:38 (Ref:599993)

No one is lying. I'll try to get some specific information on speed. However i was told by a Senior Max driver that at Mallory Park a few years ago they got to 110mph. I'll check it

DavidStHubbins · 17 May 2003, 06:48 (Ref:601595)

Quote:

Originally posted by ghinzani
shame you and Janine dont live over here, I could get you a cracker very cheap!

Oh God, JANINE...! Supposed to pick her up from the Zen temple three days ago

speedy king · 21 May 2003, 15:38 (Ref:606006)

I quote From Karting Magazing, March 2002. Page 52

"The gearing for Pembry is likely to be fixed at 14-63 which is as tall as it gets without special gear sprockets and carriers. Top speed will be comfortably in excess of 100mph!"

loadsaaaTOP · 25 May 2003, 12:53 (Ref:609434)

speedy......maybe your rotax friend was driving a 125 GEARBOX, not a 125 ROTAX!!

speedy king · 25 May 2003, 14:35 (Ref:609495)

This was taken from KARTING MAGAZINE in a column dedicated to Rotax Max's. Perhaps as you have raced Super One you have never raced Rotax Max's on long car circuits, only National kart circuits like Super one goes to

Warwick · 26 May 2003, 08:03 (Ref:610174)

I would easily expect a Max to do 160kph+ on a long circuit, its not unusual to see KT's do 150kph down the main straight and this is confirmed on a number of data loggers

bart_jacobs · 2 Jun 2003, 21:21 (Ref:618407)

I drive a Rotax Max mostly at Genk (belgium) that's a FIA-CIK klass 1 circuit. At the end of the straight, we might get up to speeds like 130 kph, Jenson Button was there a while back, and he did 140 kph. But that's because he was racing with WC material... +160 kph is a bit fast, I suppose. You may not forget, that the rotax max is limited in revs, that prevents the engine getting higher speeds. So even if you take it to a long circuit (car-circuit) it might not go faster than that, due to the electronical rev limiter...

bart_jacobs · 2 Jun 2003, 21:30 (Ref:618421)

This is a picture of the track...

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