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- Newsgroups: rec.models.rc
- Path: sparky!uunet!panther!mothost!lmpsbbs!bobwo
- From: bobwo@ecs.comm.mot.com (Bob Woodhouse)
- Subject: Re: Altering the timing on stock motors
- Organization: secure_comm
- Date: Mon, 25 Jan 1993 21:55:05 GMT
- Message-ID: <1993Jan25.215505.19248@lmpsbbs.comm.mot.com>
- References: <93025.101906U40348@uicvm.uic.edu>
- Sender: news@lmpsbbs.comm.mot.com (Net News)
- Nntp-Posting-Host: 145.1.147.44
- Lines: 48
-
- In article <93025.101906U40348@uicvm.uic.edu> U40348@uicvm.uic.edu (Jay Lorenzana) writes:
- >
- >Hello,
- >
- >I have some questions about RC car motors. In particular the
- >Kyosho 24 degree stock motor.
- >
- >What are the pros and cons of changing the timing on such motors?
- >
- >Will the motors life degrade?
- >
- >How much faster can it go?
- >
- >Does it increase torque or increase RPM (or both)?
- >
- >How much work is involved in changing the timing?
- >
- >An aside: Does motors have the same charactoristics in forward and
- >reverse? How much percent decrease is there in reverse compared to
- >forward (if any)?
-
-
- I don't really know the answers to most of the questions, except that
- if the endbell is crimped onto the motor can, then changing the timing
- (except through timed brushes) may be a challenge.
-
- What is clear, however, is that a motor with 24 degrees of timing has
- negative 24 degrees of timing (at least approximately) in reverse. Some
- people also dislike reverse because they feel it unseats their brushes
- and thus impairs the next burst of forward. If you had a motor with zero
- degrees of timing, then it should behave well in either direction.
- For what it's worth, if you increase the timing from zero to 180 degrees,
- you get a "reverse wind" motor.
-
- By the way, I once used a Kyosho Mega motor (22x1) and a Slot Machine motor
- for parking lot racing. Realizing that I would never use the motors in
- their present form, I took them apart. I still have their armatures that
- I could put into another motor can if I ever need to do a 12 minute race.
- I noticed that the Slot Machine bushings were bronze-looking and decent feeling,
- while the Kyosho bushings had a steel color, but were about as soft as bronze,
- yet not as smooth. The Kyosho motor was much easier to tear apart. The
- commutator wear was unlike the wear I am accustomed to in that there were a
- few dents, scratches or pits in the copper, FWIW. I found the Mega motor
- to lag behind the Slot Machine, and so I do not know if their 27x1 24 degree
- motor would be all that good to worry about tweaking.
-
- Good day,
- Bob Woodhouse
-