Yokomo MR-4TC SD

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Old 02-04-2005, 12:42 PM
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Originally posted by pops
If your motor was starting to smoke at 7.79 why would you want to try and gear up to 6.9? You will turn the smoke to fire If I remember right, on a Monster Stock you should start out at around 8.3 to 7.5? What stock motor were you running?
I was running an Epic Roar from Team Paradigm, I had run it at with the one tooth lower and had no problems before...Just took it out and put back my Monster from Paradigm. should I realy gear down to 8.0+ I thought it was better to go up when the motor is gettign hot. Just my thoughts. I am still learning as I go.
Thanks Guys so please reiderate here should I go 6.8-7.2 or 8.0+
Thanks,
Stephen <><
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Old 02-04-2005, 01:10 PM
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Hey Stephen,

Just FYI, i have run at large open tracks and small tight tracks with the monster stock and have geared it between 6.9 and 7.4. 7.4 was the tightest track i've run on, Socal, and i believe i geared at a 6.9ish at Speedworld up north. I alway tend to gear that motor close to a 7.0 when i get to the track and work from there. Maybe you have it geared to low and its over revving or possible the tires you are using are gripping to much over working the motor? 8.0 seems to low to me but i guess every track is different.

Good Luck,

Blake
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Old 02-04-2005, 01:25 PM
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I'm racing at our local track in Australia with a Peak Hellfire 27t and I'm gearing at 5.88.How come you're smoking a motor at 7.79?
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Old 02-04-2005, 02:13 PM
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Originally posted by Yokibear
I'm racing at our local track in Australia with a Peak Hellfire 27t and I'm gearing at 5.88.How come you're smoking a motor at 7.79?
possibly? fluid on the comm. / worn comm. / did the motor lose performance and smoke or just started smoking? if it just started smoking, ill go with the fluid theory...

it should be safe all the way to 6.43...
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Old 02-04-2005, 04:24 PM
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I started to gear mine at 7.05 ---- not good enough!
Becaue I forgot I prepped the Motor (you should do it too)
GO HERE:

http://www.motortuningsecrets.com/tunestockmotor.html

Now I gear it at 6.8!!!! I think that is the sweet spot! But like the post before me--- after preparing the motor it will be safe to go lower to 6.43--- maybe ever lower!! Heck I gear my MVP at 5.9!
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Old 02-04-2005, 06:49 PM
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Cool link
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Old 02-04-2005, 08:08 PM
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Anyone know if the KO PDS-2143 or 2173 are prone to having centering problems? I've been using mine for a little while and sorta just dealing with it since I didn't know of the cause... I know KO have awesome servos but I'm thinking of switching and getting a couple of S9550's.

- JB
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Old 02-04-2005, 08:16 PM
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Gearing. What are you guys reffering to;
Spur / pinion x internal ratio
100/34 x 2.35 = 6.911
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Old 02-04-2005, 08:26 PM
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Originally posted by JayBee
Anyone know if the KO PDS-2143 or 2173 are prone to having centering problems? I've been using mine for a little while and sorta just dealing with it since I didn't know of the cause... I know KO have awesome servos but I'm thinking of switching and getting a couple of S9550's.

- JB
Check to see if your servo arm is stripped. I had the same problem with the same servo's and I ended up having to buy the KO heavy duty servo arms.
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Old 02-04-2005, 08:35 PM
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Originally posted by Matt Howard
Check to see if your servo arm is stripped. I had the same problem with the same servo's and I ended up having to buy the KO heavy duty servo arms.
Are you talking of the actual servo arm or the plastic gear on the very bottom when you open it up

- JB
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Old 02-04-2005, 09:09 PM
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Jaybee, i think Matt is talking about the servo arm that slides onto the splined output piece. I also wanted to mention that i had a centering issue for a couple of weeks after i switched from a cgm servo saver to just a plain servo arm. I finally figured out the cause was from using the same screw from the cgm servo saver which was to long to actually hold the regular servo arm all the way on and would cause the servo arm to skip a notch every once in a while.

Blake
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Old 02-04-2005, 10:22 PM
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Originally posted by JayBee
Anyone know if the KO PDS-2143 or 2173 are prone to having centering problems? I've been using mine for a little while and sorta just dealing with it since I didn't know of the cause... I know KO have awesome servos but I'm thinking of switching and getting a couple of S9550's.

- JB
Had the 2143 for about 2 years and have not had any problems what so ever. Great servo. Would never buy any other brand.
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Old 02-04-2005, 10:48 PM
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thanx guys...
Blakesrc-
that's kind of what mine seem to be doing; I'll have to investigate it later...
pops-
I don't want to switch, but something smaller would be nice

- JB
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Old 02-04-2005, 10:57 PM
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Originally posted by Mr. Shookie
Quit Braggin'

LOL

Stephen <><
Just stating a fact to show how good the CGM is.

Nothing else I assure you.
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Old 02-05-2005, 06:22 AM
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Originally posted by johnbull
Just stating a fact to show how good the CGM is.

Nothing else I assure you.
It was intenteded as a joke.
Thanks guys for your input I am going to race today @ HOT ROD HOBBIES and will try 7.0 and work from there.
Hoep everyone makes the A main where they are.
Take Care & GOD Bless,
Stephen <><
Oh on the servo. I loved my S9550 but found that I wasn;t getting the speed I desired so I got the 2324 from KO mainly because it has HSR which works great with the Helios's ability to control the servo better. And it is much faster. I did have to squish everything on the floor though, when I get the Spektrum I think the Receiver is going on top the servo though...Not much space right now.
CYA
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