Power of stock Aerox cylinder

Just out of interest guys what do you reckon a stock Aerox 50 cyclinder with a Yasuna R exhaust will produce? A magazine i have seen managed to get 4.5hp out of a AC minarelli engine with a unrestricted Polini for Race so i was thinking maybe 5hp for LC Minarelli with a Yasuna R would that be a good estimate?

I think that can be possible but you know it for sure when you test it

5 hp would sound like a good estimate
give or take 1 either side

most exhausts give you about 1 hp, but the yasuni r is a really good one for the standard cylinder and i would say it would give a bit more then compared to many other exhausts.

aerox lc, standard cylinder, 17,5mm DO, Yas R, gives 6,5 hp...

Sweet thanks for the help guys.

Aerox-Evo70 said:

aerox lc, standard cylinder, 17,5mm DO, Yas R, gives 6,5 hp...

Click to expand...

Unfortunately not every dynamometer gives the same result. Comparing your 6.5 to his 4.5 is therefore pretty useless, if it were true this would mean you would BLOW them AC scoots away easily with almost 40% more power. This is simply not the case.

On dyno A (for example the one at Matton) the stock LC engine will produce 5.5bhp. On dyno B, this might suddenly be 6.5 or 7.
Some even go as high as 9bhp (Hester Motorsport).

As far as I know, the difference when measured on the same dyno is about 1bhp. If it were more, the differences among stock scooters would be huge.

Some Matton scores are:

4.5bhp stock 50 AC with NRX
5.3 stock 50 LC with NRX
6.5 cast iron TP70 AC with Giannelli Giant2
9.2 Corsa LC with ForRace

These make sense.

Of course Hester's stock NRG+Yasuni R with "9.2bhp" is no match for our 9.2bhp Runner with Corsa+ForRace...