Higher pinions = safer MMM's? Or no? Someone's lying....

[BrianG]

Yeah, they basically shunt any voltage in excess to their rating to ground, thereby clamping the voltage to a more manageable level. Protects the FETs and caps from overvoltage, not to mention the batteries. That is IF they are that kind of diode. Like I said before, they could also be intended to function as the "body diode" found in FETs (but basically do the same kind of thing).

[shaunjohnson]

well i think that we should all get over this!!
taken too long and no one knows a true answer yet!!!
leave it alone, go try it in practice and see what happens!!
nerds vs nerds dosent work guys

[jayjay283]

Don't forget deer skinning 101

[JThiessen]

Originally Posted by jayjay283

Don't forget deer skinning 101

Nah, we had that at Montana State - comparatively we were the redneck school - U of M is the tree hugger community.

I'm bumping this because SOME PEOPLE STILL insist on stating that higher pinions = safer ESC's, even with 6S.

[lutach]

Originally Posted by Freezebyte

I'm bumping this because SOME PEOPLE STILL insist on stating that higher pinions = safer ESC's, even with 6S.

Tell them to get a data logger to get a basica idea of how many AMPs various gear ratio will pull. I've done my homework and I have a solid set up.

[What's_nitro?]

Or, let them continue down their own path and figure it out the hard way. Maybe after the 12654615th time their ESC thermals (or worse) they'll understand.

[Unsullied_Spy]

Originally Posted by What's_nitro?

Or, let them continue down their own path and figure it out the hard way. Maybe after the 12654615th time their ESC thermals (or worse) they'll understand.

The problem is that they will burn up ESCs left, right, and center and blame CC for it and go all around the internet trying to sully their reputation. It already happens, but with all the n00bs coming into the market because of these RTRs we're going to be seeing more and more of it because people simply don't understand how it works and they want to go 60 MPH through 3 feet of grass with 8" tall tires and have everything work perfectly.

I agree on the EagleTree, I'd like to see someone running 15T, 20T (stock, I believe), and 25T pinions on 6s and post up good graphs on all 3 to show exactly what gearing does to amp draw. Also post up temperatures and such to show what the increased/decreased load does to temperatures across the board.

[BrianG]

Originally Posted by Unsullied_Spy

The problem is that they will burn up ESCs left, right, and center and blame CC for it and go all around the internet trying to sully their reputation. It already happens, but with all the n00bs coming into the market because of these RTRs we're going to be seeing more and more of it because people simply don't understand how it works and they want to go 60 MPH through 3 feet of grass with 8" tall tires and have everything work perfectly...

Amen to that! All that power and no knowledge/appreciation of how it works is a recipe for disaster.

[What's_nitro?]

Yeah I hear what you guys are saying. I was referring to the people who have been told it's not the case but continue to do so.

[suicideneil]

That should be Castle's and HPI's (even traxxas's) 'line':-

1.noob cooks esc through over gearing/ massive tires/ tall grass etc, send it to castle for repair.
2.castle kindly repairs/ replaces cooked esc, but includes a note to say that excessive gearing in the wrong conditions (tires/ grass etc) will result in further meltdown, will not warrenty the esc if same thing happens again.
3. noob cooks esc again 'cos da manual says 6s + tall gearing am okay', sends it to castle.
4. castle say 'get knotted' because they didnt heed the warning **from the esc & motor manufacturer no less**, forces noob to pay for non-warrenty repair.
5. noob cries to all his mates about paying the repair fee, hopefully warns them about overgearing.

In an ideal world that is....

[shaunjohnson]

trouble is..we feel all cool because we know this!!
all traxxas and hpi need to do is say "60mph!!* *under correct conditions and using ONLY 30C 5000mah lipo's"

that'd fix quite a few issues!!
but nooooo..the companies in question, traxxas = speed runs and HPI = high load back flips AND speed runs (and not advertising a gearing change between monuvers)

[lutach]

As they all say, speed and power sells. Too bad they fail to realize how much current is actually needed to push a vehicle at the claimed speeds. It doesn't only come down to using the best lipos. Castle should put some rules out and also call them out to avoid many more failures.

[BrianG]

I thought it was sex that sells? They should start displaying scantily clad women on the boxes of their products.

Sex sells but stupidity is always free