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Hitec 645

claude bigelow

Senior Member
Messages
1,010
Location
Jersey City, NJ
I purchased servo to upgrade from stock ones. I have two, but only see wires coming out under the throttle and break servo. Also it's a lot smaller than stock servo, was I suppose to order something else to make it fit?
 
G

Guest

Guest
The 645 will fit for the throttle brake.

For the steering you want the 5765.
 

claude bigelow

Senior Member
Messages
1,010
Location
Jersey City, NJ
Ok got the steering done. But that 645 looks smaller then the stock servo. Also I'm only replacing the one under the steering servo correct?
 
G

Guest

Guest
The 645 is for the top servo. The one that hooks to the carb and brakes.

The steering servos are on the bottom laying on their sides.
 
G

Guest

Guest
If you plan on running 2 servos, they need to be matched. You would replace both. The 5765 is the best fitting servo. The larger servos won't fit as nice under the battery box.

A lot of guys will run a single steering servo and just omit the one under the battery box. It is easier to set up a single servo than the dual setup.
 

claude bigelow

Senior Member
Messages
1,010
Location
Jersey City, NJ
Ok so remove the arm here on the left? Should I remove old servo also?

image.jpg

image.jpg

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G

Guest

Guest
Not off the top of my head.

Get it mounted.

Power it up and let it center.

Install the horn.

Install the and adjust the linkage so that wheels are straight.

Fine tune trim with transmitter.

Set the end point adjustments on the transmitter.

That's about it easy peasy...
 

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