Brushless Baja with 2 Castle 1717s?

[thzero]

6.84-6.89" for the Baja 5b tires. These are in the dropdown for the speed calc.

If you need higher pinions/different spurs,contact bryce on HBF,he owns baja skunkworks and makes gearing ratios and overdrive setups for 62cc motors.im sure he could easily modify his setup to accomodate 2 1717's--Josh

[KaztheMinotaur]

The reduction spur and pinion are 24/50 yielding a ratio of 2.083 yielding a speed of 44.08 using stock Dirtbuster tires.

A gear reduction ratio of 1.5 bumps the speed to 61.21! HA.

No reduction is 91.82 ( I can see people being knee capped now...)

Leopard motor with same reduction is 41.8.

Does anyone know what the estimated speed of a stock Baja is?

I'm also looking into a 63mm Little Screamers motor. Up to 8000 watts. Mr. Little Screamers is supposed to call me today.

A bone stock baja does 35-40, mine has been clocked at 48mph with a rear Dom and a DS engine. But I'm buying a 2-speed for christmas so I'll top out around 70 with alot more bottom end.--Josh

[Arct1k]

The Castle eBaja was 46mph on 8s with 14T pinion - I´m now running 15T and would guess I´m in low/mid 50s.

Which is fast enough for me :)

[lincpimp]

Originally Posted by Arct1k

The Castle eBaja was 46mph on 8s with 14T pinion - I´m now running 15T and would guess I´m in low/mid 50s.

Which is fast enough for me :)

What motor are you using Chris? Stock baja pinion is 18t correct?

Seems like the Kershaw setup would help if you planned to run something like the 2200kv 1515 in pairs and needed to gear it down to realistic speeds that would not overload the motors...

Otherwise 1 big motor and a slightly smaller pinion look to be the easy choice. I still like the dual 1717 setup, if only for the fact it uses well tested components. In a year once the CC XL setup is procen and a bit cheaper it will be the bees knees.

[Arct1k]

I´m using the Castle 2028 which is 750kV - the Castle kit comes with a 14T pinion.

This will be perfect for most folks.

[KaztheMinotaur]

8S with a 15T pinion?

Direct drive pinion to spur?

[Arct1k]

Originally Posted by KaztheMinotaur

8S with a 15T pinion?

Direct drive pinion to spur?

Yes with the Castle 2028 and a stock 57T Spur

[lincpimp]

So what is the rpm max for the 2028? 35k?

[Arct1k]

IIRC the can said 45k... But i think that 35K would be a good operational limit.

I think patrick mentioned that 8S was its target zone and that if you went to 12s you´d need a different motor.

[lincpimp]

Originally Posted by Arct1k

IIRC the can said 45k... But i think that 35K would be a good operational limit.

I think patrick mentioned that 8S was its target zone and that if you went to 12s you´d need a different motor.

Hmm, so around 25k rpm on 8s. 12s is 35k rpm... I am guessing it will draw too much on 12s, HEHEHE. P said the 12s MMMWTFBBQ or whatever it will be called will not have any more total wattage capability than the 8s. Still sounds like a good esc to run a low kv 1521 or 1527 on 12s lipo. I am guession the 2080 should be capable of more output than the 1527.

Are they going with the same designations on the 20 series as the 15 series? So it has an 80mm long stator... Must be BIG.

[Overdriven]

Just thought I'd post some pics of a Kershaw converted baja I saw in person awhile back, since that conversion was mentioned here. This one is a powered by a single 2215 personally, the other conversions out there look a helleva lot better made.