smirk-racing 253 Posted September 23, 2022 Hi All, I noticed recently that my XV-02 was almost un-driveable with my usual (extremely fast) servos. I had to use both expo and servo speed settings in the radio to slow the servo way down, and that made the car a lot more fun to drive. What are the ideal specs people are aiming for in terms of speed and strength for the xv-01 and xv-02? I know the xv-02 also calls for a low profile servo (if you want to skip using the spacers). I think the XV-01 also fits a low profile servo easily, but then it DOES require spacers. Thanks! Share this post Link to post Share on other sites
OoALEJOoO 3127 Posted September 23, 2022 For my XV-01 I use a JX-PDI-4409MG low-profile digital metal-gear servo. Its claimed specs @6V are 9.2 Kg-cm and 0.11 sec/60deg. I think in reality it's a bit slower. For ~$15 USD it's a good option. 1 Share this post Link to post Share on other sites
BuggyGuy 1106 Posted September 23, 2022 I use a Savox SV-0220MG in my XV01 and its worked well - easily had for about £20 Share this post Link to post Share on other sites
Big Jon 684 Posted September 23, 2022 You don’t need any spacers with a low profile servo in an 01. I like fast powerful servos, and I use the EPA and EXPO to get the feel right. Even on a rally car, you don’t always want max mechanical steering throw. A PTK-160 is an awesome (and too expensive) servo, a Savox 1251 is adequate, although I’d prefer more speed. The 1251 has become almost a spec servo for my recent builds. Share this post Link to post Share on other sites
Juls1 1661 Posted September 23, 2022 Look for something around the 8-10kg mark, minimum speed should be 0.1, preferably less. I run 9kg 0.08 in my xv01. for xv02 you want low profile, otherwise you need spacers which lifts the servo up higher which creates more flex in the mount. Share this post Link to post Share on other sites
Willy iine 18805 Posted September 23, 2022 1 hour ago, Big Jon said: You don’t need any spacers with a low profile servo in an 01. I like fast powerful servos, and I use the EPA and EXPO to get the feel right. Even on a rally car, you don’t always want max mechanical steering throw. A PTK-160 is an awesome (and too expensive) servo, a Savox 1251 is adequate, although I’d prefer more speed. The 1251 has become almost a spec servo for my recent builds. Not on a XV, but I run 1252MG which are noticeably faster. I'm going to be trying my new PowerHD BZ soon which are slightly even faster.. @smirk-racing which servo are you currently running? If it's like 0.07sec for 60 degrees, it might be better just to get more familiar with your car? 1 Share this post Link to post Share on other sites
Pylon80 2628 Posted September 23, 2022 I would look into EPA and expo (if your transmitter has expo) rather than downgrading your servo. 1 Share this post Link to post Share on other sites
smirk-racing 253 Posted September 23, 2022 Thanks for all the tips and suggestions! Much appreciated. I grabbed a couple of servos using these suggestions as a guideline. Share this post Link to post Share on other sites
toyolien 4680 Posted September 23, 2022 41 minutes ago, smirk-racing said: Thanks for all the tips and suggestions! Much appreciated. I grabbed a couple of servos using these suggestions as a guideline. Which servos did you end up getting? Share this post Link to post Share on other sites
smirk-racing 253 Posted September 24, 2022 https://hobbyking.com/en_us/trackstar-ts-d99x-digital-1-10-scale-touring-drift-buggy-steering-servo-10kg-0-08sec-45g.html I've had good luck with HK, and if anything goes wrong, customer service is incredibly good. 1 Share this post Link to post Share on other sites
Nicadraus 6198 Posted September 24, 2022 Most of my servos are SPT which I changed from JX. One installed in my XV-01 and in my FF cars. The SPT 4412LV is quicker, more torque (and looks better with Tamiya because it has blue aluminum casing ) But one servo I really love is my PowerHD L12-HV. Ultra fast and with coreless motor and all-aluminum casing. 0.06 secs -12kg @7.4v. Share this post Link to post Share on other sites
Raman36 1656 Posted September 24, 2022 I recently tried one of the low profile JX in my TA03. It was labelled digital and coreless. Well it was neither l. So I returned it to Amazon and bought another servo that looked just like it, it’s a no name.. but seems to be doing the job. I have the SPT saved in my list for the future Share this post Link to post Share on other sites
Raman36 1656 Posted September 24, 2022 No matter the car, you really don’t need a servo that’s faster than 0.11 seconds at 6.0 v. Fast servos will make the car very nervous. 1 Share this post Link to post Share on other sites
smirk-racing 253 Posted September 24, 2022 6 hours ago, Raman36 said: No matter the car, you really don’t need a servo that’s faster than 0.11 seconds at 6.0 v. Fast servos will make the car very nervous. This is what I finally discovered... I was chasing specs for a long time and for my off-road vehicles it mattered less because they have less traction anyway, but for on-road, it became very noticeable. It is sort of counter-intuitive (at least to me). I thought a very fast servo would give a very dialed-in feeling - as soon as my fingers moved, the car tires would also move. Obviously there is a lot more to it than just that as I much prefer driving with the servo speed turned down a good bit now. Share this post Link to post Share on other sites