HPI Monster Truck Forum Talk about HPI monster trucks here. The infamous Savage 21, SS, .25 or any other HPI MT. You can optionally discuss HPI in our general MT discussion forum if you prefer.

sf-50?? servo question.

Old 07-02-2011, 01:44 PM
Senior Member
Thread Starter
Join Date: Oct 2008
Location: pefferlaw, ON, CANADA
Posts: 1,536
Likes: 0
Received 0 Likes on 0 Posts
Default sf-50?? servo question.

hey guys, i purchased my flux hp last october and it came new in the box with the hpi sf-50 servo. according to hpi's website the truck should have came with the sf-5 for steering and the sf-50 being an optional upgraded unit?? the torque specs they list is 12 kg/cm and .18 transit speed. i just grabbed another hitech 645 mg servo, for one of my savage x's and it lists the servos power as 9.6 kg/cm and a transit speed of .20 sec.?? my main question is ...did they accidentally put the sf-50 in my truck at the factory and how real are hpi's torque specs? the 645's in my other trucks seem to have more torque than the sf-50?
Old 07-04-2011, 11:21 AM
Senior Member
djyjrlz's Avatar
Join Date: Jan 2010
Location: steyning, UNITED KINGDOM
Posts: 411
Likes: 0
Received 0 Likes on 0 Posts
Default RE: sf-50?? servo question.

might be a factory upgrade because of people complaining about crap steering servos [&:] either way its a decent servo for free. no downside
Old 07-04-2011, 12:17 PM
Senior Member
Foxy's Avatar
Join Date: Mar 2005
Location: Kingston UK, but living in Athens, GREECE
Posts: 18,082
Likes: 0
Received 0 Likes on 0 Posts
Default RE: sf-50?? servo question.

My SF 5 was immediately removed and cannibalised for its connector lol (custom lipo balance adaptors ).
Old 07-04-2011, 06:35 PM
Senior Member
Join Date: Dec 2006
Location: Mountains
Posts: 2,139
Likes: 0
Received 0 Likes on 0 Posts
Default RE: sf-50?? servo question.

My First flux had a SF-20 or SF-5 I believe. The "updated" Fluxs now have SF-50 steering servos with 166 oz of torque.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.