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Old 02-02-2005, 10:50 PM   #1
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Would you risk burnout to win......

Ok so I couldn't think of a better title....Anyway......

Now I run a rollout of 43.65, which I thought was quite high, and a pinion to spur ratio of 34/66 in 540 stock (everything still stays coolish).

The back ground info.....The National champs are on here in March and of course I'd like to do well (as can be expected anyway considering it's my first meeting I'd be happy with not last ) and the club hosting the event had a meeting this past weekend sort of like a prelim sort thing (couldn't make it to that one).

It has come to my attenion that the cars that were in the top group however were running rollouts of like 50.00 with the top SSG for example having a pinion to spur ratio of 40/67 with things being rather hot.

Sure these people had the skills and the speed of course but is the victory worth the torture to your gear, would you do it?

I'm wondering if I should try to match the ratios which I could as I'd at least like to be able to say I wasn't beaten purely by speed?

Gear Vs Victory huh
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Old 02-02-2005, 11:03 PM   #2
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Yes, I would risk it. It's a National Champ Race... not a club race. You gotta do what ya gotta do if you want to compete and win. You don't take 6 month old used batteries to a National. You take new ones. New motors. New tires. etc.....
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Old 02-03-2005, 02:08 AM   #3
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Hey mabuchi,

Yes a common ratio for stock (540J's) was around the 3.95 mark, I heard of a lot lower but don't know for sure. Main thing is, if you can hold the corner speed you can gear it up. My main problem was the tyres overheating. Those motors can handle the heat no problem.

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Old 02-03-2005, 02:55 AM   #4
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gear it up for sure. I don't know if I agree with not taking 6 month old batteries but yes , new motor, new tires and probably a new body-stratus 3.0 Not sure what the tracks are like there but over here in the land down under we gear them at around 4.15. hey they aint dear motors. make sure it is run in a you have a spare run in. load it with comm drops and bushing buster. when the comm is purple and the arm black, gear it down a little
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Old 02-03-2005, 02:59 AM   #5
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Default Thanks for the comments.....

Quote:
Originally posted by Jack2
gear it up for sure. I don't know if I agree with not taking 6 month old batteries but yes , new motor, new tires and probably a new body-stratus 3.0 Not sure what the tracks are like there but over here in the land down under we gear them at around 4.15. hey they aint dear motors. make sure it is run in a you have a spare run in. load it with comm drops and bushing buster. when the comm is purple and the arm black, gear it down a little
Only problem is that at the Nationals it's a hand out motor and you're only allowed one motor so not much time to run it in properly.
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Old 02-03-2005, 03:04 AM   #6
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are "BuGgeR"

Ok you probably Know about this but grab a 540 and hook it up to 4 cells(or 6 cell if you aint got a 4) and run it under water for 3-4 minutes. this will cut the brushes to sit flat against the comm and it give quite a boost in performance. We have dyno'd one before and after and have gained about 1200 RPM
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Old 02-03-2005, 03:10 AM   #7
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Arrow RPMS

a stock 540 new out of the box usualy pushes around 18,450 on my dyno but after the water treatment it usually run around 19,650+

give this a try with one you've got floating around
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Old 02-03-2005, 03:21 AM   #8
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Default Re: RPMS

Quote:
Originally posted by Jack2
a stock 540 new out of the box usualy pushes around 18,450 on my dyno but after the water treatment it usually run around 19,650+

give this a try with one you've got floating around
Will do, it's been so many years since I water dipped a 540 I'd forgotten about it. I do seem to recall now that for some reason it worked better with ice water.
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Old 02-03-2005, 03:23 AM   #9
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yeah the runin in the water will make its rpm increase about 1000 more.......and yes i would burnout a motor for that even........i would prolly use a new motor every race
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Old 02-03-2005, 03:30 AM   #10
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PPM-holy crap that is a cool avatar

Coke is also a good liquid for the job.
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Old 02-03-2005, 03:32 AM   #11
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Default off topic

Pink Pac man- who is that godess ???
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Old 02-03-2005, 10:44 AM   #12
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I believe Ralph Cramden said it best when talking about gearing at big races when he was talking to his PB:

"To the Moon, Alice!"
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Old 02-03-2005, 11:07 AM   #13
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I would say gear up to win. However when you gear up to much you lose more speed than you gain. If you gear the car up just for straights. The motor will come under to much load in the corners and instead of gaining speed you will actually lose it because of lack of exceleration in the corners not to mention over heating. You want the motor to just hit its peak at the end of the straight, but if the car is still gaining speed at the end your really not helping your cause. Just my thoughts.
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Old 02-03-2005, 11:22 AM   #14
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If this is going to be the biggest race you've ever been in I would do what it takes to try to win even if it means burning up the motor, at least you'll go out in a blaze of glory no matter what the outcome. lol
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Old 02-03-2005, 01:22 PM   #15
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Racing "wears stuff out" and "uses stuff up"...there's no way around it...

If you want to be fast you're going to have to give yourself every oportunity: run your motor how it runs the fastest for 5 minutes, run your tires so that they perform as well as they can for as many runs at you need them too... if new tires are the best, run new tires every run... if you can afford it

just my 2 cents...
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