• Welcome to RCCrawler Forums.

    It looks like you're enjoying RCCrawler's Forums but haven't created an account yet. Why not take a minute to register for your own free account now? As a member you get free access to all of our forums and posts plus the ability to post your own messages, communicate directly with other members, and much more. Register now!

    Already a member? Login at the top of this page to stop seeing this message.

HitecRCD TH7950MG replacement?

N

Natedog

I wanna be Dave
Subscribed Member
Joined
Jan 4, 2006
Messages
12,107
Location
Corruptifornia
I've been using HitecRCD TH7950MG as steering servos in most my crawlers, but it's been discontinued. Yes I can buy another somewhere, but really like to get with the newer standard of 25T servo horn spline count. Been looking around for a new standard replacement, but nothing really grabs me, what y'all suggest?

Edit: Current Hitec servo specs:
Size: 1.57 x 0.79 x 1.50 (40 x 20 x 38mm)
Weight: 2.40oz (68g)
6.0V 7.4V
Speed: 0.15 sec 0.13 sec
Torque: 403 ozin 486 ozin
Drivetrain Type: Dual ball bearing
 
Last edited:
The Holmes SHV500 is pretty much the only servo I spend good money on these days. The V3 has more torque than the 7950, beefy gears and pins, aluminum case, great customer support, and you get to eliminate the BEC.
 
I had used the HiTech 7950 for years in 5 or 6 different builds. Really bummed that it was discontinued, and my local Hobby Shop is not carrying too much Hi Tech anymore. I have put the Savox 1230 SG in my last two builds, I like them so far. $70 not to bad of a price."thumbsup" They are 25 T spline count.
 
Thanks for the suggestions!

Savox is larger than normal and I've seen lots of them (not necessarily that model) that were noisy, glitchy and died on the trail. How's the noise on that model?

HH SHV500V3 is innovative, but I've seen several of the V1 and V2 fail out on the trail, V3 is out of stock most places. Would love to lose the voltage regulator CCBEC though.

Hmmmmm wish Hitec made TH7950MG with 25T.
 
Some of the newer Hitec servos are 25 spline.

I've been replacing broken 7950's and 7954's with Promodeler 470's. Zero regrets. They've proven strong and durable. I'm hell on servos and the Promodeler 470 has earned my repeat business. Been buying them since they were a 420gen2. Up to 10 now. I also have a few Promodeler 630s that I can equally highly recommend.

Huge torque specs mean nothing without the durability to back it up. This is where I feel a lot of servos fall short. Meaning they boast alot of torque, but don't tolerate shock loads of smashing toy trucks into rocks.
 
Natedog said:
Thanks for the suggestions!

Savox is larger than normal and I've seen lots of them (not necessarily that model) that were noisy, glitchy and died on the trail. How's the noise on that model?

HH SHV500V3 is innovative, but I've seen several of the V1 and V2 fail out on the trail, V3 is out of stock most places. Would love to lose the voltage regulator CCBEC though.

Hmmmmm wish Hitec made TH7950MG with 25T.
Click to expand...

Savox servos are annoying. But my Hitec HS-7954SH is much louder and more annoying than any Savox I've ever owned. It's obnoxious!

What are the specs of the servo you are trying to replace?


MaX-D said:
I honestly wish that Hitec would get their act together and just make 25T splines and be done with it
Click to expand...

Amen! All servos should be 25T though.
 
MaX-D said:
I honestly wish that Hitec would get their act together and just make 25T splines and be done with it
Click to expand...


X2 "thumbsup"



meatmonkey said:
Some of the newer Hitec servos are 25 spline.

I've been replacing broken 7950's and 7954's with Promodeler 470's. Zero regrets. They've proven strong and durable. I'm hell on servos and the Promodeler 470 has earned my repeat business. Been buying them since they were a 420gen2. Up to 10 now. I also have a few Promodeler 630s that I can equally highly recommend.

Huge torque specs mean nothing without the durability to back it up. This is where I feel a lot of servos fall short. Meaning they boast alot of torque, but don't tolerate shock loads of smashing toy trucks into rocks.
Click to expand...


Yes, they are but kinda odd mix of specs on some of them.


Good info and agree about specs, thanks! :)


JatoTheRipper said:
Savox servos are annoying. But my Hitec HS-7954SH is much louder and more annoying than any Savox I've ever owned. It's obnoxious!

What are the specs of the servo you are trying to replace?
Click to expand...


That's been my Savox experience, I've not owned that particular Hitec, the others I've had have been pretty quiet.


Doh, shoulda included that, updated first post, thanks! "thumbsup"


Oooh this looks pretty nice:
https://www.towerhobbies.com/cgi-bin/wti0001p?I=HRCM0951


Operating Voltage Range (Volts DC): 4.8V ~ 6.0V ~ 7.4V
Speed (Second @ 60°): 0.23 ~ 0.17 ~ 0.14
Maximum Torque Range oz./in.: 292 ~ 403 ~ 486
Maximum Torque Range kg./cm.: 21.0 ~ 29.0 ~ 35.0
Current Draw at Idle: 30 mA
No Load Operating Current Draw: 500 mA
Stall Current Draw: 6,200 mA
Dead Band Width: 1 µs


Physical Specifications:
Dimensions (Inches): 1.57 x 0.79 x 1.50
Dimensions (Metric): 40.0 x 20.0 x 38.0
Weight (Ounces): 2.4
Weight (Gram): 68.0
Circuit Type: 32bit Programable Digital
Motor Type: Coreless Metal Brush
Gear Material: Titanium
Bearing Type: Dual Ball Bearing
Output Shaft (type / Ømm): H25T
Case Material: Aluminum
Dust/Water Resistance Splash Proof: Yes
Connector Gauge (AWG)/Strand Count: 20/80
 
Pretty pricey IMO for what it is - I am guessing because it is programmable which I wouldn't think you would need here.

Savox 1290 is nice. I would have said it's not too noisy but I was watching a comparison video the other day and yeah, I guess, it is? HH and ProM are both popular suggestions here too.
 
Natedog said:
That's been my Savox experience, I've not owned that particular Hitec, the others I've had have been pretty quiet.

Doh, shoulda included that, updated first post, thanks! "thumbsup"

Oooh this looks pretty nice:
https://www.towerhobbies.com/cgi-bin/wti0001p?I=HRCM0951


Operating Voltage Range (Volts DC): 4.8V ~ 6.0V ~ 7.4V
Speed (Second @ 60°): 0.23 ~ 0.17 ~ 0.14
Maximum Torque Range oz./in.: 292 ~ 403 ~ 486
Maximum Torque Range kg./cm.: 21.0 ~ 29.0 ~ 35.0
Current Draw at Idle: 30 mA
No Load Operating Current Draw: 500 mA
Stall Current Draw: 6,200 mA
Dead Band Width: 1 µs


Physical Specifications:
Dimensions (Inches): 1.57 x 0.79 x 1.50
Dimensions (Metric): 40.0 x 20.0 x 38.0
Weight (Ounces): 2.4
Weight (Gram): 68.0
Circuit Type: 32bit Programable Digital
Motor Type: Coreless Metal Brush
Gear Material: Titanium
Bearing Type: Dual Ball Bearing
Output Shaft (type / Ømm): H25T
Case Material: Aluminum
Dust/Water Resistance Splash Proof: Yes
Connector Gauge (AWG)/Strand Count: 20/80
Click to expand...

I've heard Hitecs are quiet, but that hasn't been my experience which is admittedly limited.

That looks like a nice servo. Savox 2290 would be comparable and it's known to be bullet proof. Seems a little quieter than most other Savox servos.

The Tekin servos are nice, but way too expensive for what they are.

My ProModeler sucks and I documented my experience with the customer service elsewhere.
 
Natedog said:
HH SHV500V3 is innovative, but I've seen several of the V1 and V2 fail out on the trail, V3 is out of stock most places. Would love to lose the voltage regulator CCBEC though.
Click to expand...

Nearly all the failures on the V1 and V2s were related to the center pin bending, revisions were made and Holmes said the failure rates on the V2 were down to like 2% before they were discontinued for the V3. The V3 gears and pins are way stronger so the V2 failures should be eliminated from the newest generation.

Can't help with the out of stock part though.
 
JatoTheRipper said:
Do you have personal experience with that Hitec?

What about the Protek 170BL? Have you abused that thing? That one is tempting.

I had the same experience with the PM. I'm going to throw a BEC on it at some point and see if that helps at all.
Click to expand...

Never used the Hitec

Love the Proteks. I've been beating on mine for over two years as have most of my friends.

I ran a BEC at 8.4 on the Promodeler and it still didn't do anything worth a damn.
 
Icehawk said:
Pretty pricey IMO for what it is - I am guessing because it is programmable which I wouldn't think you would need here.

Savox 1290 is nice. I would have said it's not too noisy but I was watching a comparison video the other day and yeah...
Click to expand...


KInda, but buy once is better imo...had good luck with them before and good warranty service.


VMGontheRocks said:
This Hitec is the replacement for the 7950:
https://hitecrcd.com/products/servos/d-series-servos/d-950tw/product


Can't recommend the Promodeler, I had one and it was awful.
Click to expand...


Bought this Hitec, thanks!


Yeah, buddy has had nothing but mediocre or less with several Pro-Modeler servos in crawlers, even sent in to them and they said it was just dandy. :)


VMGontheRocks said:
Love the Proteks. I've been beating on mine for over two years as have most of my friends.

I ran a BEC at 8.4 on the Promodeler and it still didn't do anything worth a damn.
Click to expand...


Interesting how the ProTek stuff has such hit and miss quality-wise.



JatoTheRipper said:
It looks like you're in luck! Hitec is bringing back the 7950 and 7955.

https://www.bigsquidrc.com/hitec-bring-back-the-hs-7950th-hs-7955tg/
Click to expand...


If they're not 25 spline output shafts, pass. "thumbsup"


themountain said:
What about this ?
https://www.agf-rc.com/servo-a73chlw-p2115719.html
"thumbsup"
Click to expand...


Interesting but getting close to price of good name brand servo with a real warranty, any experience wtih these?
 
Natedog said:
Bought this Hitec, thanks!

Yeah, buddy has had nothing but mediocre or less with several Pro-Modeler servos in crawlers, even sent in to them and they said it was just dandy. :)

If they're not 25 spline output shafts, pass. "thumbsup"
Click to expand...


Awesome. Please let us know how you like that servo when you get it. I especially want to know if it's quiet.

More and more unhappy PM owners seem to be crawling out of the woodwork. I wish this had happened before I bought mine. Is your buddy running an external BEC on them? I haven't tried that yet, but I'm going to do just that.

LOL I don't blame you. All servos should move to 25T.
 
Interesting but getting close to price of good name brand servo with a real warranty, any experience wtih these?
Click to expand...
Some in our club run them with no issues and extremely good customer service "thumbsup"
 
Last edited:
You must log in or register to reply here.

Similar threads

Ditchrat
Fan model FS-20W 20kg servo unboxingish
Replies
2
Views
2K
Ditchrat
Ditchrat
J
Which Savox Servo for my SCX10 II?
Replies
7
Views
9K
Traulus
T
C
wiring a servo to a battery direct
Replies
11
Views
3K
heyok
heyok
M
OMG servo
Replies
11
Views
3K
Bigdaddy76
Bigdaddy76
S
new Power-HD "Storm-3" HV brushless servo 444oz+?
Replies
5
Views
3K
Devil Inc
Devil Inc
Back
Top