Asuga Crappy servo?

[madasuga25]

Its been roughly 4 years since I owned a radix6 so I can't remember if the stock servo was the same. But is the asuga servo not that great, I had a few small crashes today at low speed and I'm hearing the notorious crunchy sound. Seemed to insignificant to cause damage but it did, thanks

 

[Horatio]

Many people tighten their servo saver all the way up so that there's no gap between the coils. This results in more direct steering.

Unfortunately, it also results in broken gears in the servo when you crash.

2 things:

Upgrade your servo saver spring to a Lee Spring LC 085J 0 M

Buy a decent servo, such as an AGF 81BHMW, or if budget allows - a Protek 170 SBL.

Then you never need to give the steering any more thought.

Clamping the spring most of the way down is not a solution - it's a straight trade - positive steering in exchange for no saving action whatsoever.

Speccing a spring is not as straightforward as you might imagine.

So here's the Lee Spring on the right.

The stock spring I can fully compress between the tips of my index finger and thumb.

Not happening with the Lee Spring....23N/mm rate. This means that to compress the spring just 1mm, you need to apply 2.3kg of weight. Even though I have a grip strength of 50kg, I can't compress the spring anywhere near full compression.

If you live in Europe or the UK, shipping is free for orders over £30. Below £30, there's a handling fee of £12.50 (€15).

I've a good mind to buy another batch and sell them on eBay again.

 

[shortround9191]

I just ordered a few I’m US $6.25 for shipping, I tighten my servo saver but haven’t to the extent of not leaving any coil space. So far my stock servos have been fine with a 50 mph crash straight on a wheel that deformed it of course breaking the lower control arm and shock lower. For servos I use KST for mine there high priced but are amazing quality

 

[Atomic Skull]

This servo is as close to unbreakable as it gets:

https://www.promodeler.com/DS635BLHV

They actually have a patent on that 5 gear layout. It allows them to pack much wider gears into they inside of the case that would otherwise be empty space. Also these servos are designed in-house and as much as possible made in the USA. The gears, bearings and motor are from Japan and the PCB is made by a board house in Taiwan, the aluminum shell is made in the USA and all of the parts are assembled in a US job shop.

 

[Horatio]

This servo is as close to unbreakable as it gets:

https://www.promodeler.com/DS635BLHV

They actually have a patent on that 5 gear layout. It allows them to pack much wider gears into they inside of the case that would otherwise be empty space. Also these servos are designed in-house and as much as possible made in the USA. The gears, bearings and motor are from Japan and the PCB is made by a board house in Taiwan, the aluminum shell is made in the USA and all of the parts are assembled in a US job shop.

Great servo - though it states not recommended for BEC use. Likely because it draws some serious current.

My MMX has an 8A BEC, so if it draws more than that I'd be concerned!

 

[madasuga25]

Many people tighten their servo saver all the way up so that there's no gap between the coils. This results in more direct steering.

Unfortunately, it also results in broken gears in the servo when you crash.

2 things:

Upgrade your servo saver spring to a Lee Spring LC 085J 0 M

Buy a decent servo, such as an AGF 81BHMW, or if budget allows - a Protek 170 SBL.

Then you never need to give the steering any more thought.

View attachment 9019
Clamping the spring most of the way down is not a solution - it's a straight trade - positive steering in exchange for no saving action whatsoever.
View attachment 9020
Speccing a spring is not as straightforward as you might imagine.

View attachment 9021
So here's the Lee Spring on the right.

View attachment 9022
The stock spring I can fully compress between the tips of my index finger and thumb.

View attachment 9023
Not happening with the Lee Spring....23N/mm rate. This means that to compress the spring just 1mm, you need to apply 2.3kg of weight. Even though I have a grip strength of 50kg, I can't compress the spring anywhere near full compression.

View attachment 9024

If you live in Europe or the UK, shipping is free for orders over £30. Below £30, there's a handling fee of £12.50 (€15).

I've a good mind to buy another batch and sell them on eBay again.

That lee spring sounds like the option spring for my mayako, it was so hard that I couldn't get the top assembly to compress it, so many in racing aren't using the springs any more. I think I'll save and look at an agf as suggested, I've read good things about them, I'm not keen on spending $200 on a servo though, I'll keep in touch if I have trouble with getting the spring down. Thanks

 

[madasuga25]

I just ordered a few I’m US $6.25 for shipping, I tighten my servo saver but haven’t to the extent of not leaving any coil space. So far my stock servos have been fine with a 50 mph crash straight on a wheel that deformed it of course breaking the lower control arm and shock lower. For servos I use KST for mine there high priced but are amazing quality

View attachment 9028

View attachment 9029

Thanks

 

[Atomic Skull]

Great servo - though it states not recommended for BEC use. Likely because it draws some serious current.

My MMX has an 8A BEC, so if it draws more than that I'd be concerned!

A big anti brownout capacitor or a supercapacitor backup pack will cover the split second amp spikes. Not quite as good as a receiver pack but acceptable. They even say it will work on a BEC but the performance specs are not guaranteed. The crimp terminals in servo connectors are typically Harwin M20 terminals which are rated for 3A continuous current so if it was drawing more than that constantly the connector would overheat and fail.