Recent content by brettus8

Depends on whether you can get a motor/esc combination to run at that rpms with enough power to do the job. Allowing for the extra 10% or so power loss through the gearbox. The reason the P2 is what so many of us use is because it excels in the rpm ranges that suit readily available hobby...

Considering grabbing one of these for my P2 setup. Anyone tried one...

IMO you need to get tuning software and tune it for boost. Trying to do it mickey mouse style might be ok for 1-2psi but it will severely limit the potential of your system once you start raising the boost.

Yeah ... motor sits at around 48C under there doing nothing.

Just came back from 'Mad Mike's Summerbash'. Had three one hour sessions on track . These sessions are not full blown race pace. Generally it's more about just cruising around the track until you reach a certain part of the track where it becomes a full on roll race for all and sundry. This is...

Had zero issues with mine .... highest power I've seen out of battery is 18.5Kw so far at 25000ish rpm - I think there is more left in it.

Wow ...great video and explanation! For me I really have to stick with some water though, due to safety concerns, plus it really does help my rotary stay nice and clean (preventing compression loss) internally. Maybe ...for the dyno though......lol

just thinking aloud here ... this is not from experience. Would it be fair to say that while water does a better job of reducing knock on its own, methanol allows more liquid to be injected into the combustion chamber (without drowning the engine) which in turn allows more power to be made...

I'm using my max4 at 54.5V and it still works fine - for the last 6 months or so anyway. Any higher and the my charger trips out the ESC regularly and you can tell it doesn't like it as the audible 'ready' tones sound wonky. Using a 21S battery which means each cell is at 2.6V which is perfect...

Might be worth me trying it with dual motors seeing as It's working so far. I figure the P2 is capable of 3-4 x more than what I've thrown at it so far and it was designed with just a belt drive in mind.

Thanks for the reply. Interestingly, I'm not seeing my belt get hot at all at around 18KW peak and 27000rpm. Could be a few factors in play .... The water cooled compressor housing is also cooling the shaft/drive pulley, plus, I've got quite a conservative 'punch' setting on the ESC.

Hmmmmmmm .....I wonder ......

Might pay to get those gears closer in to the motor end bearing if at all possible ... shaft flex/bearing wear might become an issue. Use countersunk set screws perhaps? Otherwise .... I'm seriously thinking about doing something similar for my build.

Update : Having to bring the eSC in quite late due to surge as mentioned above was getting to me. Had been thinking about variable speed control but the idea of tuning an Aduino or similar doesn't appeal due to my lack of computer skills. So, I had a spare speed control board (they sent me an...

Yep