VS_Rody

Hi Pedro,

We made our own designed carburetors some time ago when I was producing the TecnoPower engines. I used these same carburetors on the VSR01, you can see it here.
Unfortunately we cannot reproduce because of the qty of engines we sell are not enough. So I decided to use the OS carburetor which is a very good design too and the quality and finish is really up to a good standard for me.

ralphierace13

iTrader: (5)

rody did u know on the os carb there is a sleeve that is press over the barrel part that goes down into the motor it is not a one piece, it has come loose on me 3 times on 3 different motors. I believe the nova is a one piece design or it might be 2 also just has never come off before like my os has. did u know that?

VS_Rody

Yes, I am aware how both of these are made.

OS has chosen to use a steel sleeve pressed(and glued) with precision on the barrel part of the carburetor itself. A steel sleeve is used because the aluminum of the carburetor is too soft and when you tighten too much the carburator fixation then you risk to deform and the carburator can get stuck in the housing. Using a steel sleeve this will not be possible. Of course if you over-tighten the fixation you also deform with the result the sleeve can come loose from the barrel.
However this can be fixed by degreasing(breakcleaner) well the barrel part of the carburetor and making some small flat parts on the barrel part so the glue can settle there and hold better the sleeve in place. Make some smalle groves inside the sleeve with a dremel too. Then clean well and assemble with loctite 648, remove all the exsessive glue and let it dry for 24H

Nova has chosen to insert the steel ring during the casting process and with this for sure the ring will never move. However this is not an easy process, slow and quite expensive to realize.

BigC2007

iTrader: (9)

Hey Rody,

I havent been able to read this whole thread but do you know if anyone in California/GLARCRC is running this motor ? Thinking of getting one but know I will need help with break in and getting it set up.

VS_Rody

Not that I know if but you might check with Rich Browne or Rick Davis, they are from the California area.
You can find him on page 3 of this thread.

BigC2007

iTrader: (9)

Ok thank you.

Rich Browne

I'll be at GLARCRC this weekend and will be happy to get you setup

Rich

Rick Davis is in the Ohio area...wish he would move out here.

BigC2007

iTrader: (9)

Thanks Rich your the man.

mustangkillaz

iTrader: (5)

Any testing to see if fuel temps or heat sink benefits apply to the plastic sleeve?

mustangkillaz

iTrader: (5)

I'm local and can also help you break it in if time permits. Just pm me with any concerns if you start yourself

BigC2007

iTrader: (9)

Thank you Mustang for some reason I thought you was out of state.

mustangkillaz

iTrader: (5)

No, I'm near that track. Heat gun, temp gun and a few other things help it go smooth. You just need the car with good initial settings or a break - in bench. If you don't get it done pm me a contact number, I'll buzz ya to go over it. I can lend a hand or walk you through it.

M7H

Hi Rody, exactly what you say.
I have 2 VS-R02 engines (you know), and 2 OS-R2102 engines, and the difference between them is exactly that.
The difference between the exhausts is also my conclusion, in where the OS-2080 / EFRA 2098 gives most power everywhere (and best sound )

Next season I will continue to run your engines, I will contact you in due time.

Good luck, and most of all enjoy your time at the worlds next week. I will not attend... sometimes you have to make choices.

VS_Rody

This would be the best solution for me personally, the only thing is that this is not for everybody because you have to be careful not to over-tighten too much the carburetor retainer.

BD1541

To those that have not tried out the VS02R yet I suggest you get your hands on one. I ran the engine for the first time on my new RX 8 2017 and it didn't take more than 2 adjustments to get the tune on the spot, I paired the original OS Speed manifold with a Novarossi pipe and the bottom end of this thing is just massive. The track that we run here is a purpose built onroad track used for IFMAR FEMCA sanctioned GT world race.

The power delivery compared to an OS2102 ( even if modified ) is that it produces immense torque on the low end yet complements the midrange the original engine has compared to a very midrangey only character of the OS 2102 making the power delivery immediate which benefits technical circuits like ours.

The motor came off just under a 100 deg C and I felt it as already too powerful thus have dialed it down slightly on the top end needle but Rody's motor really surprised me, Guys that normally run the 2102's here started turning heads to see the immense power delivery of this motor from bottom right up to the top at the end of the straights.

Kudos to you Rody for creating one fine motor!