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Author Subject: 2 speed gear box for rotrex chargers
pugheaven

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Location: Fareham

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Post #1
As im soooo bored out here iv been researching and came across a company called antonov that have designed a 2 speed gear box that bolts onto the charger.
For some reason I cant link the site out here but if you search "antonov rotrex" you will find out more info

Iv copied the below from one of the sites

The two speed drive enables a Rotrex centrifugal pump supercharger to be better matched to any engine. By driving the supercharger faster at low engine speeds, higher boost ratio can be obtained to provide additional low speed engine torque. As engine speed rises the unit automatically changes up to enable the supercharger to continue to operate effectively at higher engine speeds.

So who is going to be the first to buy one of these units Dunno
Posted 22nd Jul 2013 at 18:27
bigbadbowen

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Post #2
You are money bags Thumbs up
Posted 22nd Jul 2013 at 18:20
pugheaven

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Post #3
Na that's what the c38 is for, if I didn't get the chance to buy a c38 setup I might have given this ago, looks interesting tho Smile
Posted 22nd Jul 2013 at 18:23
midlife

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Post #4
Perhaps I'm having a "blonde moment" but why go to all that trouble when the addition of a smaller pulley would have nearly the same effectDunno

Cool

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Posted 22nd Jul 2013 at 18:47
midlife

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Post #5
Interesting read

http://tdi-plc.com/blog/japan/lexus-is200/is200-rotrexantonov-stage-3/lexus-is200-stage-3-rotrex-antonov-supercharger-upgrade

Cool

________________________________________

Get used to seeing the yellow one !!!MehMehMehMehMeh
Team 330™Cool
Team "no front end or engine"
Team "LIMITED EDITION" I live for the 306 stickerSmug
Team 0-60 in 6.44 & standing qtr in 14.808 @ 94.55mph all with std engineSmug
203bhp Corolla T-Sport daily driver stealthier than Kwai Chang Caine
Posted 22nd Jul 2013 at 18:56
pugheaven

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Post #6
Coz fitting a smaller pulley would mean that the charger goes into overspeed at top engine rpm and most likely destroy the charger?
Posted 22nd Jul 2013 at 19:04
mechanical_repairs

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Post #7
I have one of these complete with the charger, should you want it, brand new in the box.
Was interested in it like you but then lost the love.

Carl

________________________________________

C.G.Cars of Leicester, Peugeot/Citroen/Renault specialist Tel: 01162 624498/07799 405184 WWW.CGCARSLEICESTER.CO.UK
36 narborough road south, Leicester LE3 2fn

MOT station now open, tests £35 with a free retest.
Recovery available with a recovery unit, for those not so local jobs

Also offer the loan of a free courtesy car 306 dturbo
Posted 22nd Jul 2013 at 19:09
pugheaven

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Post #8
Im not interested now I have the c38 setup, just out interest how much would you be after?
Just found one of these gearbox's on ebay including the charger if anyone is thinking about trying it out Thumbs up
Posted 22nd Jul 2013 at 19:21
midlife

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Post #9
I can't find any prices anywhereDoh

Cool

________________________________________

Get used to seeing the yellow one !!!MehMehMehMehMeh
Team 330™Cool
Team "no front end or engine"
Team "LIMITED EDITION" I live for the 306 stickerSmug
Team 0-60 in 6.44 & standing qtr in 14.808 @ 94.55mph all with std engineSmug
203bhp Corolla T-Sport daily driver stealthier than Kwai Chang Caine
Posted 22nd Jul 2013 at 19:27
prism7guy

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Post #10
I'm pretty sure there are companies working on toroidal cvt's for these at the moment, I reckon they will be better than 2 speed versions.

________________________________________

Goldie the track car.
Posted 22nd Jul 2013 at 19:57
midlife

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Post #11
"toroidal"

That's easy for you to say....

Ok I can understand the point of having one of these on a road car with the extra low down torque but for track use its a bit of a white elephant.

A slightly smaller pulley would be best for me I think..

Cool

________________________________________

Get used to seeing the yellow one !!!MehMehMehMehMeh
Team 330™Cool
Team "no front end or engine"
Team "LIMITED EDITION" I live for the 306 stickerSmug
Team 0-60 in 6.44 & standing qtr in 14.808 @ 94.55mph all with std engineSmug
203bhp Corolla T-Sport daily driver stealthier than Kwai Chang Caine
Posted 22nd Jul 2013 at 20:04
pugheaven

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Post #12
I think that with the pulley that your using at the moment makes the charger spin at its safest rpm with out destroying the charger, might be worth asking rich or lynx?
Posted 22nd Jul 2013 at 20:11
welshpug!

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Post #13
or just fit a VNT turbo and an ecu capable of controlling it properly.

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Posted 22nd Jul 2013 at 20:12
pugheaven

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Post #14
That's a good point Meirion but its also like saying buy a r34 skyline or 911 turbo as they are built with power as standard, not quite the same though is it!!
Posted 22nd Jul 2013 at 20:17
welshpug!

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Post #15
I'd bet a turbo would be cheaper tbh!

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 22nd Jul 2013 at 20:30
pugheaven

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Post #16
me too but when the topic of this thread is supercharged related its not really got anything to do with it has it?
Posted 22nd Jul 2013 at 20:38
mechanical_repairs

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Post #17
pugheaven wrote:
Im not interested now I have the c38 setup, just out interest how much would you be after?
Just found one of these gearbox's on ebay including the charger if anyone is thinking about trying it out Thumbs up




I would take £850 for it.



£950 with the fluid lines, filter and reservoir, also includes the mounting brackets.

Carl

________________________________________

C.G.Cars of Leicester, Peugeot/Citroen/Renault specialist Tel: 01162 624498/07799 405184 WWW.CGCARSLEICESTER.CO.UK
36 narborough road south, Leicester LE3 2fn

MOT station now open, tests £35 with a free retest.
Recovery available with a recovery unit, for those not so local jobs

Also offer the loan of a free courtesy car 306 dturbo
Posted 22nd Jul 2013 at 21:02
prism7guy

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Location: DoncastAAAAARGH

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Post #18
I assume it knows when to change gear and does it all automatically?

________________________________________

Goldie the track car.
Posted 22nd Jul 2013 at 21:33
mechanical_repairs

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Location: leicester

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Post #19
prism7guy wrote:
I assume it knows when to change gear and does it all automatically?


No you get a gear lever to put next to you in the carYes


No it's all done on centrifugal forces so its all done automatically, sorry couldn't resist.Thumbs up

A bit of blurb

The two speed drive enables a Rotrex centrifugal pump supercharger to be better matched to any engine. By driving the supercharger faster at low engine speeds, higher boost ratio can be obtained to provide additional low speed engine torque. As engine speed rises the unit automatically changes up to enable the supercharger to continue to operate effectively at higher engine speeds.

The ability of the mechanism to operate as a passive device without the need for additional external control or hydraulics offers low cost, high efficiency and simplicity of application. The compact Antonov drive system - essentially a tiny automatic gearbox - extends the engine torque curve delivered by a centrifugal pump supercharger. This type of supercharger is in itself more compact, less complex and less expensive than a positive displacement supercharger, but in comparison cannot offer the same torque output at low engine revs. The addition of an Antonov drive system, however, extends the engine torque curve available to exceed even the performance of a positive displacement blower. In addition, the torque curve can be tuned so that a smaller displacement engine matches exactly the performance of a much larger naturally aspirated unit.


Carl

________________________________________

C.G.Cars of Leicester, Peugeot/Citroen/Renault specialist Tel: 01162 624498/07799 405184 WWW.CGCARSLEICESTER.CO.UK
36 narborough road south, Leicester LE3 2fn

MOT station now open, tests £35 with a free retest.
Recovery available with a recovery unit, for those not so local jobs

Also offer the loan of a free courtesy car 306 dturbo
Posted 22nd Jul 2013 at 21:48
prism7guy

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Post #20
Damn, i'd want like a flicky switch like mad max does. Laugh

________________________________________

Goldie the track car.
Posted 22nd Jul 2013 at 22:33
stan_306gti6 Forum Admin

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Post #21
Laugh my ass off @ Carl - You get a gear lever to put next to you in the car. LOL

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 22nd Jul 2013 at 22:46
24seven

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Post #22
midlife wrote:
"toroidal"

That's easy for you to say....

Ok I can understand the point of having one of these on a road car with the extra low down torque but for track use its a bit of a white elephant.

A slightly smaller pulley would be best for me I think..

Cool


On track where you'd spend most of your time at higher RPM you'd better off with the normal larger pulley, hence the benefit from a 2 stage system on the road.

________________________________________

Ph1 306 GTi 6 | RX8 231 S1 | YBR 125 Cafe Racer | MT-03 660
Posted 23rd Jul 2013 at 01:23
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #23
I can confirm that there is no need for this system on the road if you have the C38 variety of charger. The torque produced is pretty good and it spins up without delay too.

I can however see the point if you're using the C30 series still as the low down power delivery from these isn't particularly great, and there could be a benefit from fitting this. Yes

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Jul 2013 at 09:06
eliotrw

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Post #24


Edit, Sorry being moron.... Is the charger new too or do they come together?

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Ex- Phase 3 China GTi-6 T-Reg
Posted 23rd Jul 2013 at 09:26
stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

Status: Offline

Post #25
If you're talking about the one that Carl has, it's all new. Yes

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Jul 2013 at 10:48

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