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Old 03-31-2006, 05:39 PM   #1
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Default lathe, dyno question

i now am ready to look for a lathe and a dyno. my question is this. which dyno to buy which lathe to buy and how important is a diamond bit? i like the trinity moster dyno, and i like all the lathes, is ther much of a difference, don't they all do the same thing?
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Old 03-31-2006, 05:48 PM   #2
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Here's my 2 cents:

The diamond bit is great once you get used to your lathe. I wouldn't buy it right off because sometimes you have the odd "accident" while cutting motors. Once you're real smooth with the lathe, it's a great thing to have - never gets dull and the finish on the comm is great.

Dyno-wise, it depends what you want to do. If you're looking for a tool to break in motors and so forth, the Trinity dyno will work. I would also look at the MuchMore Motor Master. It works well too for that sort of thing.

Dyno-tuning is a whole different can of worms. You can't do much with any of the free-wheeling dynos that don't have any load on the motor. That's a completely different thread though, so I'll leave it at that.
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Old 03-31-2006, 06:01 PM   #3
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basically i want the dyno to tell me when my motor starts to do what?
i know i am never going to dyno tune since i get to race about 12 times a year.
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Old 03-31-2006, 06:02 PM   #4
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also i have a motor brake in on my charger, so i would only be using is for rpm and what else?
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Old 03-31-2006, 06:20 PM   #5
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Basically, the free-wheeling dynos are going to give you the basics - RPM and Amp Draw. You can use this to do a quick check-up on your motor in-between cutting the comm and/or changing your brushes in order to determine how much your motor has fallen off from where it was right after a re-build.

Where I would draw the line though is in reading too much into the performance numbers. You can tune springs, brushes, etc. in a way that makes those dynos read much better numbers but this may or may not translate to improved performance in the car. For that, you need a more complex dyno that puts a load on the motor during testing.
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Old 03-31-2006, 06:27 PM   #6
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is there a lathe or a dyno that has a bad rep.? which one not to buy
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Old 03-31-2006, 06:33 PM   #7
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There's a ton of opinion out there about what's crap, but I haven't seen a lathe or dyno from any of the major companies that totally sucks or anything, so I'd say if you stick to the fairly well known brands, you should be ok.
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Old 03-31-2006, 06:35 PM   #8
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thanks for the help
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Old 04-01-2006, 01:28 PM   #9
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But just keep in mind the BEST dyno in the world is the track.....
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