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Digital vs. Standard servo current draw

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Digital vs. Standard servo current draw

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Old 02-28-2002, 01:40 PM
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Default Digital vs. Standard servo current draw

This is in reference to 1/8 scale off-road where we need the receiver battery to last through a 45-60 minute race sometimes. Do the digital servos suck up a lot more juice than a non-digital equivalent servo? I would also like to know if the hitec coreless servos (925 and 945 I think) center more precisely than the 645 and 605.
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Old 03-01-2002, 04:29 AM
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Hey! Yes the digital models use more power than the analog units, but is only about 5-10% more. I have 1100mah packs in both my gas truck and XR buggy and have no problem making one hour mains. I am using the 5925 for the truck and a 5945 for the buggy.

As a general rule of thumb a coreless will center better than a brushed servo, but its very hard to tell the difference. The most precise centering comes from the digital servos due to the fact they check their position 300 times a second vs 50 for a anolog unit. TTYL.


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Old 03-01-2002, 06:28 AM
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Thanks for the info. What other advantages are there to the digital servos? I'm currently using an Airtronics Caliber 3P to control. Do you think that a JR z4750 servo (plastic gears) will survive for a season in a 1/8 steering application?
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Old 03-01-2002, 07:37 AM
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More power, increased reliability, programmable features, coreless motors, more precise, more torq from center and a lot more holding power.

I would look at a metal gear digtal servo: HS-5925 or HS-5945..

1/8 scale, I would lean more towards the HS-5945..

Hope this helps....
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Old 03-01-2002, 12:41 PM
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So the analog 925 and 945 don't have coreless motors? What kind of programmable features do they have?
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Old 03-01-2002, 01:11 PM
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yes, they(925 & 945) have coreless motors also...

Programmable options include:

Speed
Dead Band
EPA
Rotation

just to name a few....

It does require the HFP-10 programmer to program.
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Old 03-09-2002, 07:47 AM
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I have a question is there another way to program those servos like with my PC because the programmer is priced a little high not to mention that i cant find it on line.
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Old 03-09-2002, 08:47 AM
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Unfortunately, no you can't. What we have done with the programmers is set up a deal with LHS's to purchase one and have it at the store to program servos for customers. Where do you live?? I can track down the nearest LHS that should have one for you. They are pricey, but a Pit Wizard is still selling for $80. When they first came out I remember those bad boys running $160 or more.

We'll try to track down an LHS for ya. TTYL.

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Old 03-09-2002, 09:57 PM
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belleville michigan about 22miles southeast of Ann Arbor michigan.
thanks
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Old 03-11-2002, 01:59 PM
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Nova, we don't have any LHS's on our list that are from michigan, but try Larry's Performance R/C's in Sterling Heights. The number there is 810-997-4840. They may be able to give you a hand. Hope this helps a bit, TTYL.


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Old 03-11-2002, 08:53 PM
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thanks i will go see larry saturday.
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Old 04-04-2002, 08:08 AM
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Default 2 ? Bad splines? Ordering/Payment info?

First question - I had a 945 hi torque servo last year in my T-Maxx for racing. I ran a Trinity 6 volt receiver pack to it. Every servo saver I used on it, stripped out. It was like the splines were totally different from any servo saver I could find. And yes, I even counted the splines numerous times to make sure I had the right one. It would strip so easily that even after landing a jump, it would mess up the steering alignment. So, the real question is, what could have caused or prevented this? I got so bad, after 5 savers, that I ran an aluminum arm direct to the linkage just so I could finish a race.

Second question - I currently have a Lynx 3d w/spectra/novak combo and a 5945 servo ordered. That stuff was all on back order, but I noticed that my account was now charged for the full order amount. Does this mean that everything is in stock and ready to ship?
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Old 04-04-2002, 04:10 PM
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What servo savers were you using? I know you said it but were they for a 24 tooth spline? I find that the best ones on the market are from kimbrough.

As for an order, is the order from Hitec? TTYL.


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Old 04-04-2002, 04:23 PM
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I accidentally replied this message in. I put a seperate post on it. I've got the order details all straightened out. Showed up today. AWESOME RADIO! As for the servo saver, that will be an ongoing thing I think. I'll be running a 5945 this year. I have tried Kimbrough, GS, stock, and an HPI arm type. All stripped. And I counted teeth on the servo and the horns.
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