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Old 03-04-2006, 10:09 PM   #121
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bvoltz - The Mod is a stand up version and the Stock (also for 19t) is the laydown version. These brushes are the real deal.
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Old 03-04-2006, 11:38 PM   #122
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Agreed, & I just got the chance to try a pair in my Co27(mine was starting to lose a bit of power after 6 or 7 runs, so it was a good time to rebuild it before the mains came around tonight), & while the motor appeared to lose a little bit of torque after switching to the F brushes, the power overall stayed the same(& it still had plenty of torque), but it also picked up between 1500 & 2000 rpm, & after adjusting my gearing to compensate, it ran GREAT again ontrack(& as always, it feels like it's not even breaking a sweat after each run, this thing is one cool customer). Me like.....
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Old 03-05-2006, 12:01 AM   #123
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Default CO27

Stockton Raceway allowed us to use our now legal CO27 motors for racing today. I had no trouble adding two teeth to my pinion gearing and having it take me to fifth in the A main with a strong field present.

Motor was only 140 degrees when it came off the track...kewl.

Didn't hurt that it came from EA either...he, he...

Will be back at Stockton tomorrow for a testing day. Will try gearing it up another tooth.
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Old 03-05-2006, 08:34 AM   #124
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Quote:
Originally Posted by RobertM
Im interested in running these F brushes and I have a few questions. How long do the F brushes last? What is the recommended time/run interval to change these brushes? How do they compare to the 767 brushes? Thanks
I have never been lucky with the F brushes, in all the testing I have done on my dyno the 767 have always yield more power.......
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Old 03-05-2006, 04:15 PM   #125
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Quote:
Originally Posted by JLMG1971
I have never been lucky with the F brushes, in all the testing I have done on my dyno the 767 have always yield more power.......
But you have to keep in mind that dynos don't always tell the whole story, & wit the F-Brush that seems even more true. Almost EVERY motor I've tried them in ran better in the car than they did on my dyno( & I use the Robitronics dyno, so I'm not going by a cheap motor checker's numbers). Though since I've only done 2 runs with my Co27 with those brushes, the jury's still out as to whether they're better than other brushes for this one(but I am impressed so far)....
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Old 03-05-2006, 04:29 PM   #126
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Quote:
Originally Posted by JLMG1971
I have never been lucky with the F brushes, in all the testing I have done on my dyno the 767 have always yield more power.......
What kind of lap times did that dyno run last night?

Just kidding!! But like Grizzbob sorta stated...We dont race dyno's do we?

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Old 03-05-2006, 04:38 PM   #127
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Eric, do you think taking a little off the brush trailing edge is beneficial with the CO27? I've been doing that with the monster you built for me and have had good results, it's been a great motor for me by the way.
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Old 03-05-2006, 05:02 PM   #128
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Please keep in mind I'm not a top driver... I'm a club driver. I still have a lot to learn. To give you an idea, the fast guys run 25 laps, I ran 23 laps.

With all the said, I bolted on the CO27 motor, and this thing is fast.... I purchased a Pro motor, did the breakin per the directions, and the fast guy had nothing on me (he is a better driver, so all he had to do is wait for me to blow a corner...) for 3 laps, all he could is follow me. He was runing the Epic motor, and they both out performed everyone else.

Just wanted to share with you experince this weekend.
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Old 03-05-2006, 05:04 PM   #129
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This question is really not for this topic, but since you guys are spending so much time on dyno results. I would like to ask you what you think is a good dyno to purchase?

I'm really not trying to change the topic...
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Old 03-05-2006, 07:10 PM   #130
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Eric,

Now have two days of racing and testing at Stockton under my belt with the CO27 I got from EA and all I can say is Wow!!!!

Started with gearing 3 teeth up (for the pinion) than what I use for a Monster and settled on 2 teeth up for the current Stockton layout. Motor temp range was 140-152 degrees through eight runs and the original F brushes you supplied (1 comm cut so far) may even make 1-2 more runs before I change them. Unbelievable!

Stockton follows ROAR rules so the motor was legal for racing this weekend. Only a few of us had them; but, I would say that we lucky ones all did better than normal with this motor.

Can hardly wait to put the second one in my 1/12th scale.

Thanks kiddo. See ya at the Nationals.

Bill
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Last edited by JRX-S Bill; 03-05-2006 at 07:21 PM.
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Old 03-07-2006, 05:42 PM   #131
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So after reading this thread it seems like the hot set up is the the red/purple spings and using either the f brush or 767.

I was hoping that someone could post their rollouts (and what kind of track you were on, long straights, twisty, etc..).

I would like to get an idea for gearing and since i never ran the monster stock it is hard for my to gear up two or three teeth as many have suggested.

Thanks
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Old 03-07-2006, 06:08 PM   #132
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I knoe this is onroad but ill try.Right now in my buggy im rooled out at 1.026.

I found it likes 1.0-1.5 (same as p2k-p2k2).
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Old 03-07-2006, 08:44 PM   #133
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i guess i should have mentioned i am using it for touring onroad
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Old 03-07-2006, 10:29 PM   #134
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Should still work.That why peaople use rollout.It universal.

Its it professionly tuned? if so then start around 1.03
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