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Old 08-19-2016, 09:42 AM   #826
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Default Hot Bodies and HPI stuff

I use HPI Pro 4 ball cups and ball studs.
And HPI Pro 5 turnbuckles.

-Ball Cups
Item # 73510
-Ball Studs
Item # 75115 - 4.3 x 10.3mm
Item # 75116 - 4.3 x 13mm
-Turnbuckles
Item # 61246 - 3 x 24mm
Item # 112960 - 3 x 34mm


Take Care
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Old 09-25-2016, 11:32 AM   #827
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Hello guys,

we´re you guys able to fix the steering problem with the rs4 sport 3? I used a realy strong servo (Savox) but the steering is still bad. It doesn´t return to center. I really don´t know why and how to fix this.

Do you have any tips for me?
I´m thinking about buying the yeah aluminium steering parts. Do they help ?

Many thanks in advance.
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Old 09-29-2016, 09:53 AM   #828
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The problem is with the stock Tie-Rods. - Or - there's binding in the C-Block / Steering Knuckle area. Or - the Shock Shaft is binding against the O-Rings (1or more shock shafts).
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Old 09-29-2016, 05:57 PM   #829
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Originally Posted by Mario084 View Post
Hello guys,

we´re you guys able to fix the steering problem with the rs4 sport 3? I used a realy strong servo (Savox) but the steering is still bad. It doesn´t return to center. I really don´t know why and how to fix this.

Do you have any tips for me?
I´m thinking about buying the yeah aluminium steering parts. Do they help ?

Many thanks in advance.
Yes, aluminum parts helped but I also replaced the servo with a 20kg Power HD. Also I tightened the large 10mm nut down on the servo arm/horn. My Sport 3 steering completely returns back to 0/center without hesitation. However if you do not wish to replace the servo and suspension yet, I suggest tightening that horn bolt down first. Unfortunately I'm not able to post pics on the forums yet

I will post pics with the complete YR suspension/steering kit installed on my build log soon: tackk.com/rennen-rc
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Old 10-02-2016, 05:11 AM   #830
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Tightening the Servo Saver will mess-up your servo in a crash. Drive carefully.
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Old 10-05-2016, 06:11 PM   #831
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To give an update on this issue, I still found slop in the steering after a couple session. There is to much play in the Sport3's oem servo saver, this was the issue in my case at least. With the servo centered I can move it left to right, in each direction before feel resistance from the servo. I just replaced it completely with one of the Horizon billet aluminum servo horns ($7), and the steering is now rock solid. @GuyIsDamGood", most definitely. Fortunately this car is being built for a local flat rally course so I shouldn't have to worry about kissing any curbs or doing any jumps.
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Old 10-09-2016, 05:44 AM   #832
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Default Too Much Steering Play

I checked out the Servo-Saver on my RS4 Sport 3. I didn't see any normal operating play on/with the Servo-Saver. But there is a good amount of play at the the Bell Cranks and Steering Bridge(mostly).
You'll have to apply some force to the Servo-Saver to create a Servo-Saver gap.
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Old 10-27-2016, 06:48 AM   #833
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Page after page of steering problems with this car. This morning I shot some video of my buddy's Sport 3 BMW going around in circles because a tiny rock had jammed up the steering after less than a minute of running. He'd go dig the rock out and less than a minute later, it would be jammed up again. Exact same problem I had with my flux Porsche. Not fun.
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Old 10-29-2016, 05:13 AM   #834
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To keep pebbels off your chassis; sweep the track before you run your car.
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Old 10-29-2016, 05:28 AM   #835
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To keep pebbels off your chassis; sweep the track before you run your car.
Works for track surface. But most run parking lots. And can try to clear things out but epically this thine of year, with leaves falling off trees constantly, normal parking lot traffic, even condition of surface.
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Old 10-29-2016, 09:06 AM   #836
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To keep pebbels off your chassis; sweep the track before you run your car.
I agree a blower works well also. This car loves a good surface.
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Old 10-29-2016, 12:26 PM   #837
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I agree a blower works well also. This car loves a good surface.
They used a blower to clear parking lot for TC racing at hobby store over summer. Even then still had few cars still get rocks or sticks caught up.

I'm speaking for touring cars in general. Not the Sport3.
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Old 10-31-2016, 01:59 AM   #838
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Default Crazy-Weird Pinion and Pinion Spur Gear Mesh

Setting the Gear Mesh on the Pinion and Spur Gear on this chassis is a pain.
-the Motor-Mount or the Spur-Gear is crooked. . .(only on my chassis?)
-2-ply sheets of paper is needed to set the Gear-Mesh properly. . .(only on my chassis?)
-I don't get the Motor-Mount design
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Old 11-03-2016, 07:34 PM   #839
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The pebble in the steering issue is solved by putting a piece of Velcro ( furry side) under the steering rack.

As for the gear mesh try just one ply, it seems ok on mine.and yeah the spur seems to be really close the the rear of the cover.

Anyone have a setup sheet for carpet racing their rs4 3?
I started with the Subaru fatlace, so I'm set up all wrong for a carpet short track 45'x 25,-30'
I've got the yeahracing set minus the arms installed, Exotek shaft and spur, gpm motor mount, and some Lunsford turnbuckles. Also a savox servo, I'm waiting on a new horn before I install it.
We're running 21.5 and my spurs 66 pinion 27(biggest I got for now)

Last edited by Beef; 11-04-2016 at 02:49 AM.
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Old 11-22-2016, 01:25 PM   #840
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Originally Posted by mpike24 View Post
Hey guys I am new the rc world. My father in law just got me into it. Any ways I was wondering if anyone has new updates on hpi I want one of these cars... Oh and I have read all 55 pages of this post and it was hard the pages keeps crashing lol.
Any way thanks in advance.
I'm in the same boat coming back to RC. Was wondering if an RS sport3 would cut in in a sportsman(run what you brung) class? Don't care on winning, just finishing and having a good time. Or should I just build up a TT02 with silver can motor?
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