198LikesDigital Servos from China
08-31-2020, 08:01 PM
#121
That's a little USB powered light. If I had to guess I'd say those are RGB LEDs and the dip switches control them somehow.
08-31-2020, 09:21 PM
#122
That's it thanks!
I had to remove the yellow film covering the dip switches with the following controls:
1-3: all 3 must be on and causes LED #1 to rotate between RED - GREEN - BLUE
4: controls LED #2 to RED static
5: controls LED #3 and #4 to RED static
6: controls LED #3 and #4 to GREEN static
7: controls LED #3 and #4 to BLUE static
8: controls LED #3 and #4 to WHITE static (opposite half)
You can enable any combination of dip switches to mix/blend colors together to get custom colors like 5(RED) + 7(BLUE) = PURPLE
Pretty cool little gadget, no idea what I will use it for, but can definitely be used as a night light when plugged into a USB wall outlet, ha!
09-23-2020, 08:43 PM
#123
I have officially put the following servo to the test tonight:
Surprisingly, the teeth on the servo spline didn't strip, I bought a replacement servo arm and it ran flawlessly the rest of the night of racing without issue, though I drove a lot more clean
- AGF - A80BHMW 31kg.cm(430oz-in) @6.0V - 0.120sec/60°@6.0V
Surprisingly, the teeth on the servo spline didn't strip, I bought a replacement servo arm and it ran flawlessly the rest of the night of racing without issue, though I drove a lot more clean
09-24-2020, 10:35 AM
#125
In the 8+ years I've been running these aluminum servo arms from TEKNO, I've never stripped one before, though I have always used the spring loaded servo saver as well. Some of the faster pros are running the locked servo saver option for better response so I decided to give it a try. This may be one of those "risk/reward" things to consider going forward. So long as I drive clean it shouldn't be an issue. Traction last night was comparable to many indoor clay tracks, in fact a local pro shattered the track record because grip was up fairly high. So much moisture was built into the dirt from recent rains that they didn't even have to water once when they normally water between every round.
10-03-2020, 05:38 PM
#126
In the 8+ years I've been running these aluminum servo arms from TEKNO, I've never stripped one before, though I have always used the spring loaded servo saver as well. Some of the faster pros are running the locked servo saver option for better response so I decided to give it a try. This may be one of those "risk/reward" things to consider going forward. So long as I drive clean it shouldn't be an issue. Traction last night was comparable to many indoor clay tracks, in fact a local pro shattered the track record because grip was up fairly high. So much moisture was built into the dirt from recent rains that they didn't even have to water once when they normally water between every round.
10-03-2020, 09:00 PM
#127
Tech Master
2 months in with the AGF and 0 problems. no backlash in the gear train (i run a saver) and no centering or drift problems.
10-15-2020, 10:49 AM
#128
Found this on Holmes Hobbies FB page :
"We do not recommend using balance taps to power your 14v servo! We have seen a string of failures due to this practice, will not warranty the practice, and will not sell the adapter. What is the issue?
1. The servo can be getting voltage from the signal wire but not mains, which can cause a shoot through when mains is connected! This is the typical failure seen, booting servo after the radio.
2. Balance taps are only rated for 1 amp! You lose power!
3. Balance taps are only rated for 30 unplug cycles, you are prematurely wearing out your battery plug!
4. You can forget to unplug the servo and kill the battery.
Its not a good practice, please use a direct JST tap on the esc power wire as the original designer of the 14v servo intended (thats us
). This ensures your servo boots with everything else, or before your radio if you use an on/off switch."
"We do not recommend using balance taps to power your 14v servo! We have seen a string of failures due to this practice, will not warranty the practice, and will not sell the adapter. What is the issue?
1. The servo can be getting voltage from the signal wire but not mains, which can cause a shoot through when mains is connected! This is the typical failure seen, booting servo after the radio.
2. Balance taps are only rated for 1 amp! You lose power!
3. Balance taps are only rated for 30 unplug cycles, you are prematurely wearing out your battery plug!
4. You can forget to unplug the servo and kill the battery.
Its not a good practice, please use a direct JST tap on the esc power wire as the original designer of the 14v servo intended (thats us
). This ensures your servo boots with everything else, or before your radio if you use an on/off switch."
10-21-2020, 11:27 AM
#129
I've been running AGF servos for a while now, 6+ months with the A80BHM in my SCT410.3 and about 3+ months with the A62BLS in my mini truggy (PR Racing 401R-T).
Just this past week I stripped the servo gears in my mini truggy, and I knew exactly the moment it happened was when I quickly turned the wheel on a botched landing from trying to get the truck to level out. That said, the servo was only rated for 167oz-in of torque @6V, I will be swapping it with the A65BHL which is rated for 348oz-in @6V. The A65BHL is in between a shorty and standard servo which makes it a very interesting servo to try.
Anyway here's a closeup of the stripped gears on the A62BLS which ironically use the same replacement gear set as the A65BHL, so check back in another 3+ months to see if the A65BHL holds up!:
Height comparison from left to right
JX-7032MG --> AGF-A65BHL --> AGF-A62BLS
Just this past week I stripped the servo gears in my mini truggy, and I knew exactly the moment it happened was when I quickly turned the wheel on a botched landing from trying to get the truck to level out. That said, the servo was only rated for 167oz-in of torque @6V, I will be swapping it with the A65BHL which is rated for 348oz-in @6V. The A65BHL is in between a shorty and standard servo which makes it a very interesting servo to try.
Anyway here's a closeup of the stripped gears on the A62BLS which ironically use the same replacement gear set as the A65BHL, so check back in another 3+ months to see if the A65BHL holds up!:
Height comparison from left to right
JX-7032MG --> AGF-A65BHL --> AGF-A62BLS
Follow-up
After 8+ race days with the A65 in my Mini-Truggy I'm happy to report no more stripped servo gears yet.
After 6 race days with the A62 moved into 1/10 4WD Buggy (13.5T) I just stripped that servo again this past weekend on a tight indoor clay track after tagging a concrete wall coming off the straight.
I plan to replace the A62 with an A80 going forward and do not recommend the A62 for off-road use. If you must have a low profile servo, then consider the A65, it's holding up well for me so far
Last edited by billdelong; 10-22-2020 at 07:59 AM.
10-21-2020, 11:05 PM
#130
but turned out that I stripped the teeth inside the TEKNO Aluminum servo arm instead, wow! And yes, I had it fully clamped down with thread lock... if I keep stripping these aluminum servo arms, then I might have to go back and install the spring style servo saver, doh!
Most if not all other brands use 6061 and it's a significant strength difference, not sure about the Tekno one though.
10-22-2020, 07:40 AM
#131
Follow-up
After 8+ race days with the A65 in my Mini-Truggy I'm happy to report no more stripped servo gears yet.
After 6 race days with eh A62 moved into 1/10 4WD Buggy (13.5T) I just stripped that servo again this past weekend on a tight indoor clay track after tagging a concrete wall coming off the straight.
I plan to replace the A62 with an A80 going forward and do not recommend the A62 for off-road use. If you must have a low profile servo, then consider the A65, it's holding up well for me so far
After 8+ race days with the A65 in my Mini-Truggy I'm happy to report no more stripped servo gears yet.
After 6 race days with eh A62 moved into 1/10 4WD Buggy (13.5T) I just stripped that servo again this past weekend on a tight indoor clay track after tagging a concrete wall coming off the straight.
I plan to replace the A62 with an A80 going forward and do not recommend the A62 for off-road use. If you must have a low profile servo, then consider the A65, it's holding up well for me so far
i did just pick up an A80 for e-buggy. You think that servo is up to the task?
10-22-2020, 08:00 AM
#133
perfect. thanks buddy. picked up an EB48 2.0 myself.
10-22-2020, 08:03 AM
#135
I'm sure you know way more about the car than me, but I have been posting some of my notes here in case you're interested:
https://www.teknoforums.com/threads/...eb48-2-0.1864/
https://www.teknoforums.com/threads/...eb48-2-0.1864/
Last edited by billdelong; 10-22-2020 at 08:14 AM.