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Old 01-02-2013, 04:51 PM   #1861
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No problem this is just a discussion. You guys know much more about this than I do. I just built the car and want to get servos for it. Thats all. Because 1/10 nitro is knew to me I just want to buy something that works well, and dont want to keep buying again. I am also a bit confused about the voltage issue and assumed the KO RSX One10 would be a good solution, unless you all have a specific front and rear combo that might be better.

The JR DS8915 was recommended here but it isn't really available at US Stores. I see the JR Z9100S and JR Z9100T here. Not sure...
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Old 01-02-2013, 05:08 PM   #1862
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No problem this is just a discussion. You guys know much more about this than I do. I just built the car and want to get servos for it. Thats all. Because 1/10 nitro is knew to me I just want to buy something that works well, and dont want to keep buying again. I am also a bit confused about the voltage issue and assumed the KO RSX One10 would be a good solution, unless you all have a specific front and rear combo that might be better.

The JR DS8915 was recommended here but it isn't really available at US Stores. I see the JR Z9100S and JR Z9100T here. Not sure...
We bought them on Ebay. m they can be a bit expensive in some shops http://www.ebay.com/itm/JR-DS8915-Di...item3ccd095e23

Kindest regards,
Lars.
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Old 01-02-2013, 05:40 PM   #1863
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Thanks
I found this
http://www.servodatabase.com/servo/jr/ds8915

"This servo is the same as JR DS8717; it is labeled DS8915 in Europe"
It is branded in the US as a helicopter servo
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Old 01-02-2013, 07:07 PM   #1864
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Originally Posted by zedrc View Post
Does anyone know if the pulley holders are the same for 1/10 scale car and the 1/8 scale or are the 1/8 scale car pulley holder's bigger? Also does anyone know the outside diameter of the square part of the pulley.....

Thanks
Won't fit, the way the pulleys are mounted is completely different.

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Can someone tell me how well the KO RSX One10 has been performing in the car? I am looking to get two of these for throttle and steering. If someone has a better idea for front rear combo please let me know. I will get either KO brand or JR to run with my helios radio, and have a LIFE receiver pack. Also hope to avoid using a regulator.
The KO RSX One10 servos are the best servos currently available. They work on a lipo, are very precise, fast and powerfull.
I even used them in my 1/8 scale (steering and throttle) on a fast track, not a single issue.
KoPropo really raised the bar with their RSX line of servos.
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Old 01-02-2013, 07:19 PM   #1865
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Great. okay now i am happy to go with these. thanks DS
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Old 01-02-2013, 07:27 PM   #1866
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You’ve got to listen when the American Champ gives advice; and truly sorry we are only reporting the findings of tests, and of advice given to us. Perhaps it is because conditions are different on the tracks with the high speed sweepers in Australia and in Bangkok, but we only realise now that using the smaller servos has been causing instability in that type of corner and some snap steer in low speed tight corners.

The low profile versus full size testing was made by our team 2000km away in Melbourne before going to the Worlds, who then advised us about the results (the difference was quite startling apparently) when we met up in Bangkok. The earlier advice given to us not to use low profile steering servos was from all the top drivers in Australia. We didn’t want to listen then, we thought our car was so good, and it was only after the problem in Bangkok that we decided to actually test to see for ourselves. Our servo problem in that lower final; with severe understeer where it was needed; and snap steer in the infield was caused by a faulty servo however, and not from its size.

I’m sorry that we all cannot agree on this; and result of the tests are not what we expected or wanted, but I advise anyone that races on tracks with high speed sweepers to actually go and test with both types of servos. We had to before we realised heaps of torque makes such a big difference that lower CG will not compensate for, under our conditions here in Australia. For the record; our car is setup with enough steering to allow it to be turned down to what the driver desires in warm ups, and the servo saver tension was adequate and not changed during testing.

My sincere apologies for stirring this up and causing confusion, but we thought that it would be in the best interest of all to report what we found. Thanks to those that disagree with our findings for the polite debate, and for not shooting me for saying something different.

Kindest regards,
Lars.
It really depends on the brand and type of low-profile servo. There are a lot out there which have been designed for ep cars and simply don't work on gas cars. I wouldn't recommend the Kopropo 2413, or the latest Sanwa low profiles as a steering servo. I've seen both of these fail within a day when used in a nitro car as a steering servo.

I've tested back to back with the RSX One10 and the normal RSX at the start of last season and I preferred the RSX One10.
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Old 01-02-2013, 10:57 PM   #1867
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It really depends on the brand and type of low-profile servo. There are a lot out there which have been designed for ep cars and simply don't work on gas cars. I wouldn't recommend the Kopropo 2413, or the latest Sanwa low profiles as a steering servo. I've seen both of these fail within a day when used in a nitro car as a steering servo.

I've tested back to back with the RSX One10 and the normal RSX at the start of last season and I preferred the RSX One10.
I saw the new savox 1252 has a lower torque nr than the previous one, 1251.
Might it be a worse choice in general to get savox? I would also prefer a futaba servo, but i really don' have an idea which one from futaba..
Thanks
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Old 01-05-2013, 05:30 PM   #1868
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I saw the new savox 1252 has a lower torque nr than the previous one, 1251.
Might it be a worse choice in general to get savox? I would also prefer a futaba servo, but i really don' have an idea which one from futaba..
Thanks
Well, yes I would say the Savox/Orion servos are the worst choice you could make, Futaba servos are a lot higher quality.

I've got a 4 year old Futaba 9551 low profile which is still going strong. They now make a brushless version of it which should be even better.
Or otherwise the fullsize BLS 451 on steering and the low profile BLS 551 on throttle. One of my friends has this combo in his C02 and his car handles really well.
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Old 01-05-2013, 07:00 PM   #1869
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Well, yes I would say the Savox/Orion servos are the worst choice you could make, Futaba servos are a lot higher quality.

I've got a 4 year old Futaba 9551 low profile which is still going strong. They now make a brushless version of it which should be even better.
Or otherwise the fullsize BLS 451 on steering and the low profile BLS 551 on throttle. One of my friends has this combo in his C02 and his car handles really well.
Daan,

While Luke was off socialising at the track the other day I quickly fired the car up and took it out for a drive (which is something he doesnt usually let me do) and I felt that the turn in on the car was swinging from loose to oversteering and seemed inconsistent.

As I rarely drive the car and attempt to setup from feedback and sight only, is this the trait that you are referring to with the savox. I tried to look up some scientific formulas for loads in cornering but it was a little too hard to grasp while my head was buried in painting my older sons car.

We are heading down to race at Lilydale (new fresh yummy surface) at the home of Capricorn Australia and we'll be switching steering servos when we get there. I trust that your distaste for Savox has merit and wish for all to get the best from our cars.

Cheers and Happy New Year to you..

h
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Old 01-06-2013, 09:15 PM   #1870
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Bunch of skirts blaming your equipment, eat some concrete and harden up!
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Old 01-07-2013, 02:05 AM   #1871
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Bunch of skirts blaming your equipment, eat some concrete and harden up!
I suppose it would save money to just "eat some concrete and harden up", the next time a servo is no good. Will try some for breakfast tomorrow, and let you know how it went.

Kindest regards,
Lars.
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Old 01-07-2013, 04:42 PM   #1872
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Daan,

While Luke was off socialising at the track the other day I quickly fired the car up and took it out for a drive (which is something he doesnt usually let me do) and I felt that the turn in on the car was swinging from loose to oversteering and seemed inconsistent.

As I rarely drive the car and attempt to setup from feedback and sight only, is this the trait that you are referring to with the savox. I tried to look up some scientific formulas for loads in cornering but it was a little too hard to grasp while my head was buried in painting my older sons car.

We are heading down to race at Lilydale (new fresh yummy surface) at the home of Capricorn Australia and we'll be switching steering servos when we get there. I trust that your distaste for Savox has merit and wish for all to get the best from our cars.

Cheers and Happy New Year to you..

h
Best wishes to you and the family as well Harry!.

It's not like the serbo being inconsistent with the Savox servos.
I don't like the way they feel, they feel 'rough' or 'unpolished'
With a Sanwa or Kopropo servo it feels a lot more natural, I feel more connected to the car. Probably the Sanwa and Kopropo are programmed different to adjust the way they respond.
Another issue with Savox is the amount of power they need, it's not uncommon to have them cause glitching issues because they use a lot of current which messes with the receiver. This tells me that either the programming is all done wrong or the quality of the motor they use is really bad. Maybe this could be the issue you're referring to.
The last issue is simply the quality, or the lack of it. They have the highest failure rate if I look at my fellow racers. When you turn them by hand they also feel rough and are quite hard to turn.
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Old 01-07-2013, 10:22 PM   #1873
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I suppose it would save money to just "eat some concrete and harden up", the next time a servo is no good. Will try some for breakfast tomorrow, and let you know how it went.

Kindest regards,
Lars.
Yes please do, always wondered what it would be like
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Old 01-08-2013, 12:25 AM   #1874
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Yes please do, always wondered what it would be like
I ate it raw, and it hardened up my instestines. But the ring-gear in the backside is playing up now.

Kindest regards,
Lars.
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Old 01-13-2013, 10:41 AM   #1875
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Default Springs Red Vs Black

Hey guys so finally from some testing we did Black springs all round work well on normal track conditions but when they clean and sugar water the track Red springs handle better I.e front end hooks better and car is more reactive.

Isn't it supposed to be the other way round I.e.
Hard spring for high grip
Med - Soft for low grip conditions

Thanks

Read your post re steering servo and I have a KO RSX the fast one, is there a way to test it?
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