RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others  
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    • All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC On Road Nitro Cars >> RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
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    RE: OFFICIAL RS4 RTR 3 th... - 4/25/2008 1:47:24 AM   
    ferrarimk13



    Posts: 3540
    Joined: 12/17/2005
    From: Staten Island, NY, USA
    Status: offline     		looking good Galaxy, im crazy about that chassis, its definitely one of the nicest RS4 chassis' ive ever seen.

    _____________________________

    press Alt+F4 for a good time.

    (in reply to Bossman429)
           Post #: 4151

    RE: OFFICIAL RS4 RTR 3 th... - 4/25/2008 3:35:45 AM   
    viper6913



    Posts: 20
    Joined: 11/11/2006
    From: LRAFB, AR, USA
    Status: offline
    quote:

    ORIGINAL: GALAXY




    I finished my motor mounts yesterday,there was nothing really wrong with the stock ones I just wanted bigger screws so I made my own threaded for 6-32.I also tapped the header 6-32 and bored out the motor to fit them...I'll get a pic or two this evening.


    what are you using for porting. and what is reccomended for polishing?

    (in reply to GALAXY)
           Post #: 4152

    RE: OFFICIAL RS4 RTR 3 th... - 4/25/2008 12:35:30 PM   
    GALAXY



    Posts: 1338
    Joined: 4/21/2003
    From: Gainesville, FL,
    Status: offline
    quote:

    ORIGINAL: ferrarimk13

    looking good Galaxy, im crazy about that chassis, its definitely one of the nicest RS4 chassis' ive ever seen.


    You've been around awhile,you remember Rex2342? It's the chassis I shipped to him for free after I made it.He returned the favor a year or so later and sent it back with the HGI wheels when he sold his car. If I make another chassis I'll ship the flamed one to you.

    For the header porting,I used Nicholson brand hobby files,mostly the square one and I ground one edge of the file smooth for a "safe edge".

    Polishing that stock header was progressivly finer sandpaper then turtle wax chrome polish on a felt Dremel wheel.I recently bought a polishing compound set and am gonna try that on the header and mounts.

    _____________________________

    Breakin out the old car with a new motor and more nitro!!!

    (in reply to ferrarimk13)
           Post #: 4153

    RE: OFFICIAL RS4 RTR 3 th... - 4/25/2008 6:11:39 PM   
    Mann2006


     

    Posts: 14
    Joined: 4/15/2008
    From: Richmond, VA, USA
    Status: offline     		Hey I need help finding something. I need a new shaft the whole 2 speed assembly rides on but all I could find on tower hobbies are the ones for the rs4 mt and the other one looks different then the one I have now. I have the original rs4 3 rtr. Also I need help with the screws coming out. The screw that holds the 2 speed clutch onto the shaft keeps coming out even with thread lock on it. What can I do to fix that issue? Thanks for any help you can give me.

    (in reply to GALAXY)
           Post #: 4154

    RE: OFFICIAL RS4 RTR 3 th... - 4/25/2008 7:07:08 PM   
    ferrarimk13



    Posts: 3540
    Joined: 12/17/2005
    From: Staten Island, NY, USA
    Status: offline
    quote:

    ORIGINAL: GALAXY


    quote:

    ORIGINAL: ferrarimk13

    looking good Galaxy, im crazy about that chassis, its definitely one of the nicest RS4 chassis' ive ever seen.


    You've been around awhile,you remember Rex2342? It's the chassis I shipped to him for free after I made it.He returned the favor a year or so later and sent it back with the HGI wheels when he sold his car. If I make another chassis I'll ship the flamed one to you.

    For the header porting,I used Nicholson brand hobby files,mostly the square one and I ground one edge of the file smooth for a "safe edge".

    Polishing that stock header was progressivly finer sandpaper then turtle wax chrome polish on a felt Dremel wheel.I recently bought a polishing compound set and am gonna try that on the header and mounts.


    yeah, i remember him! he hasnt been on in a long while. That would be awesome, but you dont have to worry about it too much. Oh, and for porting you dont do it with a dremel, and then buff it?

    Mann, for your screw problem, just get some lock tight its in a small red applier, and the glue is blue, works great. but be careful so it doesnt bind with the clutch at all. Im not sure where else you can get the new shaft though, sorry

    _____________________________

    press Alt+F4 for a good time.

    (in reply to GALAXY)
           Post #: 4155

    RE: OFFICIAL RS4 RTR 3 th... - 4/25/2008 9:52:34 PM   
    petershin_95


     

    Posts: 26
    Joined: 3/24/2008
    From: Torrance, CA, USA
    Status: offline
    quote:

    ORIGINAL: GALAXY


    quote:

    ORIGINAL: ferrarimk13

    looking good Galaxy, im crazy about that chassis, its definitely one of the nicest RS4 chassis' ive ever seen.


    You've been around awhile,you remember Rex2342? It's the chassis I shipped to him for free after I made it.He returned the favor a year or so later and sent it back with the HGI wheels when he sold his car. If I make another chassis I'll ship the flamed one to you.

    For the header porting,I used Nicholson brand hobby files,mostly the square one and I ground one edge of the file smooth for a "safe edge".

    Polishing that stock header was progressivly finer sandpaper then turtle wax chrome polish on a felt Dremel wheel.I recently bought a polishing compound set and am gonna try that on the header and mounts.


    Hey Galaxy... that's an awesome chassis. Where are you getting the dimensions for that? what kind of metal are you using? i think i def. need a stronger one than the stock.

    (in reply to GALAXY)
           Post #: 4156

    RE: OFFICIAL RS4 RTR 3 t... - 4/26/2008 10:18:03 AM   
    viper6913



    Posts: 20
    Joined: 11/11/2006
    From: LRAFB, AR, USA
    Status: offline     		is the gasket neccesary on the exhaust manifold? mine has kind of disentigrated. also my .12ss runs fantastic at less than half a tank but is VERY sluggish on a full tank. i leaned it out some but its still sluggish and i dont want to lean it to much. any suggestions?

    (in reply to petershin_95)
           Post #: 4157

    RE: OFFICIAL RS4 RTR 3 t... - 4/26/2008 11:19:18 PM   
    ferrarimk13



    Posts: 3540
    Joined: 12/17/2005
    From: Staten Island, NY, USA
    Status: offline     		hm, thats weird, is there a hole in the tank? and when you say gasket, what is that? there has to be absolutely no hole, between the engine's manifold, to the pipe's manifold, to the pipe if thats what you need.

    _____________________________

    press Alt+F4 for a good time.

    (in reply to viper6913)
           Post #: 4158

    RE: OFFICIAL RS4 RTR 3 t... - 4/27/2008 7:40:44 AM   
    maoy


     

    Posts: 278
    Joined: 7/24/2007
    From: long beach, CA, USA
    Status: offline     		Hey, just thought I share this with everybody. I managed to gear my RS4 even higher. The current second gear is 39t spur x 25t pinion. I used the LST2 clutch bell from Losi with the 25t pinion from Losi as well. I am running HPI 22t pinion x 43t spur as Gear one. Current maximum speed is as calculated below:

    Wheel transmission ratio: 2.92
    gear ratio: 39/25 = 1.56
    final drive ratio: 2.92*1.56 = 4.55
    Engine RPM (max) = 41,700
    wheel circumference= PI*diameter = PI*65mm = 408.4mm

    Max speed = (wheel circumference/final drive ratio) * (max rpm) * (6.21x10^-7 mi / mm)*(60 min/hour)
    Max speed = 69.65 MPH

    Let me know if anybody else can gear their car even higher.

    In response to Viper, I had the same problem with the exhaust gasket. It kept on breaking or falling off so I run my car without any exhaust gasket now. Engine runs fine. I do notice that some fuel does slip out the bottom. This is maybe because my exhaust manifold is ported. But, the solution is you can run your car without an exhaust gasket.

    < Message edited by maoy -- 4/27/2008 7:45:03 AM >

    (in reply to ferrarimk13)
           Post #: 4159

    RE: OFFICIAL RS4 RTR 3 t... - 4/27/2008 3:39:55 PM   
    ferrarimk13



    Posts: 3540
    Joined: 12/17/2005
    From: Staten Island, NY, USA
    Status: offline     		whats the gasket on an rc? i never heard it referred to that, anyone have a picture, or explanation? maoy, thats some pretty good speeds, im getting really pissed off with my TZ now, because that stupid engine never runs for more than half a tank. And once it shuts off, its impossible to start it, i swear. Im pretty good at tuning, and starting an engine, which is no problem, but seriously, this thing is driving me crazy. The idle will not stay in sync, i would get it low, and it would just raise on me, uh. Another thing, the throttle servo, for some reason keeps opening the carb, even though i have it centered all the way back, so the brake is applied in neutral throttle.

    _____________________________

    press Alt+F4 for a good time.

    (in reply to maoy)
           Post #: 4160

    RE: OFFICIAL RS4 RTR 3 th... - 4/27/2008 4:06:07 PM   
    GALAXY



    Posts: 1338
    Joined: 4/21/2003
    From: Gainesville, FL,
    Status: offline     		I used .090 6061 or 5052 sheet aluminum then just clamped the old chassis to it,thansfer punched the holes and scribed the outside shape and inner millings....no CNC work there.

    < Message edited by GALAXY -- 4/27/2008 4:07:17 PM >

    _____________________________

    Breakin out the old car with a new motor and more nitro!!!

    (in reply to petershin_95)
           Post #: 4161

    RE: OFFICIAL RS4 RTR 3 t... - 4/27/2008 5:28:34 PM   
    maoy


     

    Posts: 278
    Joined: 7/24/2007
    From: long beach, CA, USA
    Status: offline     		The exhaust gasket for the NRS4 is this part: HPI A875
    Type it on google and it will come up.

    The OS .18tz is a turbo head. I don't have any experience with turbo plugs but one of the guys at my local hobby shop has a lot of experience with it. He told me that turbo heads like hot turbo glow plugs. Also, it takes a very long time to warm up. The guy told me that you have to run the car for about half or a full tank before it warms up.

    "Another thing, the throttle servo, for some reason keeps opening the carb, even though i have it centered all the way back, so the brake is applied in neutral throttle." I would say you can adjust the arm that holds onto the throttle valve on the engine. You can take it off and turn it clockwise (not the linkage that applies brake, but the shorter link that holds onto the throttle valve). This will allow you to adjust the throttle without screwing with the brake link.

    (in reply to ferrarimk13)
           Post #: 4162

    RE: OFFICIAL RS4 RTR 3 t... - 4/27/2008 6:57:03 PM   
    PoweredByNitro



    Posts: 249
    Joined: 4/26/2006
    From: Beautiful, BC, CANADA
    Status: offline     		Good Job on that Chassis Galaxy, looks exactly like a stock one. I haven't been here in awhile.. looks like this RS4 thread is still going strong, good to see! I'll post some pics of my rides later on. My 18ss is pretty much complete.. just have a few more upgrades I want to do. I also have a RS4 drifter thats been a WIP for awhile should have it complete pretty soon.

    _____________________________

    RS4 18ss // RS4 SS .12 CV-R Drifter W.I.P. // Yokomo MR4TC-SD Carbon W.I.P. // Jammin' CRT W.I.P.

    (in reply to maoy)