Is there a Bulldozer model

No, but the TR213 front end loader has plenty enough power to grade, push dirt around and make roads. Trust me, I'm waiting for a TopRace dozer too!! :)

Are any of the controls proportional?

YES! Every controll is proportional EXCEPT the tracks. Proportional controll of the cab, arms AND bucket servos allow for precise work and fine detail tasks. The cheaper loaders are almost impossible to use for fine detail due to the servos moving way too fast because they are not proportional. Hope this helps!! :)

What is the battery type and connector type, also is there a link for a spare battery?

Lithium-ion pack, made from INR 18650's. Rated at 2000MaH 7.4 volt. Connector is XT30. Yes TopRace sells them for around $30. You can find them cheaper if you shop around, but these guys ship pretty fast.

If you can get a real rc battery charger with the 30xt connector. You can charge the battery much faster. Just make sure you match the 2000mah and 7.4v to your charger. USB is so 🐌!

Model Number	TR-211M
Batteries Required?	Yes
Batteries Included	Yes
Material Type(s)	金属
Target Gender	Male
Item model number	TR-211M
Product Dimensions	38.1 x 22.86 x 59.94 cm; 8.62 kg
ASIN	B07F2QXKP2

Top Race 23 Channel Full Functional Remote Control Excavator Construction Tractor, Full Metal Excavator Toy Can Carry up to 180 Lbs, Digging Power of 1.1 Lbs Per Inch, Real Smoke, V.3 TR-211M

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