OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
i changed it to a ball diff 6-8 tanks of fuel ago. it was fine for a little while- last tank is when it started acting screwy. the car is an evo+
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
smoother running (should be anyway- always has been in past cars of mine) and better power distribution. http://www.hpiracing.com/products/en/A958/
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
nope- it's a ball diff, not a one-way. a ball diff is something like a slipper clutch in an electric pan car. the same pinion coming into the gearbox powers the spur gear. there is a plastic disk/cylinder that connects to the spur gear. the plastic disk has metal balls pressed into it. the metal outdrives are connected to the disk, via a bolt that goes through the entire assembly. you can adjust the amount of slip by how loose or tight the bolt is. you can almost create a locked diff if it's tight enough.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
when you bought that new part, are you using the big gear that it came with cus if you did... the teeth off of an 18ss (might have the same as your car) has less teeth than a regular rs4-3 and that might be the problem that your car is trying to spin the tires at two diffrent speeds so cheack the gears inside the diffs they may be off by a count
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
they are the same size. i noticed that the gear casting looked different when i was putting the ball diff together. i counted teeth on the drive side- and they were the same. i am sure something has came loose inside somehow or another. there's no other explanation since it was fine for several tanks of gas. i guess i will tear into it tonight. sometimes these little cars drive me more nuts than my full size project cars.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
i figured out what the problem was tonight. the gear mesh was off- the pinion was being jammed too far into the diff housing, throwing the mesh off. the spur gear inside the diff housing was all jacked up. i also figured out what caused the incorrect mesh.....and it was me having a Marker's Mark on the rocks while doing the ball diff install. you will notice that there is one of those orange rubber o-rings on one of the gas tank mounts. well- when i had the car all apart to clean it and install the ball diff- i didn't put one of the orange o-rings on the tank mount. instead, i stuffed two of them on the transmission output towards the front diff. that resulted in the pinion jamming into far. ahh well- $6.50 for new parts and i should be good to go. called the hobby shop and they have what i need. i will be in there on wednesday to get the broken parts as well as a few other i ordered.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
The other thing about ball diffs is that they need adjustment from time to time. My electric I check after every 3-5 runs. Haven't used one on my nitro so I don't know how frequent you should check.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
I use a starter box with my RS4 3+..I am using the Ofna chrome top box as it adapts to a right hand mounted engine. It is quite simply the best money that I have ever spent.
The starts are instant, maybe even quicker...the engine that I have seems to flame out a lot and the rotostarts where slow and frustrating, but now it's no dramas.
The Ofna chrome top is a bit old school in that it is direct drive and a tad heavy compared to new design boxes, but it is very sturdy and I don't see how it could possibly ever give problems as it is
so ruggedly built. You do have to assemble it yourself, but that is part of the fun.
Highly recommended, but I did have to taper out the edges of the flywheel hole in the chassis a little with a dremel to get a good contact with the drive wheel, but I do have the GPM chassis, but that only took a couple of minutes.
The part number is OFNA 10250 and the car has been used heaps since I bought it, knowing that when I go out, the engine will start instantly every time.
The starts are instant, maybe even quicker...the engine that I have seems to flame out a lot and the rotostarts where slow and frustrating, but now it's no dramas.
The Ofna chrome top is a bit old school in that it is direct drive and a tad heavy compared to new design boxes, but it is very sturdy and I don't see how it could possibly ever give problems as it is
so ruggedly built. You do have to assemble it yourself, but that is part of the fun.
Highly recommended, but I did have to taper out the edges of the flywheel hole in the chassis a little with a dremel to get a good contact with the drive wheel, but I do have the GPM chassis, but that only took a couple of minutes.
The part number is OFNA 10250 and the car has been used heaps since I bought it, knowing that when I go out, the engine will start instantly every time.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
Hey there ! ! !
I purchased a set of GPM adjustable suspension linkages a few days ago and everything have been installed. However I noticed that the ball linkages are a bit short when attached to the turnbuckles compared to my previous RPM heavy duty linkages. I just wanted to know if the GPM linkages would hold to the rigors of driving in the long run. I am also looking at changing the ball linkages a bit longer set, what will be the a better brand for me to use. Of course I still prefer to use the GPM turnbuckle. I just wanted to have a bulletproof suspension/steering linkages just like my 1/8th scale buggies where the linkages are connected using a ball linkage, allen head bolt & nut.
Any inputs will be appreciated.
I purchased a set of GPM adjustable suspension linkages a few days ago and everything have been installed. However I noticed that the ball linkages are a bit short when attached to the turnbuckles compared to my previous RPM heavy duty linkages. I just wanted to know if the GPM linkages would hold to the rigors of driving in the long run. I am also looking at changing the ball linkages a bit longer set, what will be the a better brand for me to use. Of course I still prefer to use the GPM turnbuckle. I just wanted to have a bulletproof suspension/steering linkages just like my 1/8th scale buggies where the linkages are connected using a ball linkage, allen head bolt & nut.
Any inputs will be appreciated.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
i would stay clear of the gpm rod ends. one of mine (front left camber) broke after on a few tanks of fuel- the end result was a destroyed dog bone, axle cup (drives the wheel from the dog bone), and a chewed up final drive gear.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
[img]hey can anyone tell me which header to get. i bought this online as a set. its a OStz standard shaft with a THS pipe. it came set up for a truggy is guess. the header shown is hitting the right rear tire.
i have been looking at the 2 HPI header, which do i get the shorter or longer one. HPI 86162 or 86163
i hope some one helps me out coz i am from malaysia and the support for hpi is you could say non existent down here so i need to get of the net. dont wanna be waiting for 2-3 weeks for the wrong stuff. [sm=bananahead.gif]
this is pipe http://rbmods.net/rbshop/index.php?t...&product_id=30
http://www3.towerhobbies.com/cgi-bin...?&I=LXFAZ8&P=M
http://www3.towerhobbies.com/cgi-bin...6163&search=Go
i have been looking at the 2 HPI header, which do i get the shorter or longer one. HPI 86162 or 86163
i hope some one helps me out coz i am from malaysia and the support for hpi is you could say non existent down here so i need to get of the net. dont wanna be waiting for 2-3 weeks for the wrong stuff. [sm=bananahead.gif]
this is pipe http://rbmods.net/rbshop/index.php?t...&product_id=30
http://www3.towerhobbies.com/cgi-bin...?&I=LXFAZ8&P=M
http://www3.towerhobbies.com/cgi-bin...6163&search=Go
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
I just bought a used RS4 RTR, and was wondering where I could get a manual or something that shows how to use glow plug and the roto start. New to nitro. Thanks
#4994
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
HPI website under custumer serbvice.. instructions.. rs4-3 rtr
http://www.hpiracing.com/instructions/instruct-rtr3.htm
http://www.hpiracing.com/instructions/instruct-rtr3.htm
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
ORIGINAL: bumpnzx3
i would stay clear of the gpm rod ends. one of mine (front left camber) broke after on a few tanks of fuel- the end result was a destroyed dog bone, axle cup (drives the wheel from the dog bone), and a chewed up final drive gear.
i would stay clear of the gpm rod ends. one of mine (front left camber) broke after on a few tanks of fuel- the end result was a destroyed dog bone, axle cup (drives the wheel from the dog bone), and a chewed up final drive gear.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
ORIGINAL: bobsp1
I use a starter box with my RS4 3+..I am using the Ofna chrome top box as it adapts to a right hand mounted engine. It is quite simply the best money that I have ever spent.
The starts are instant, maybe even quicker...the engine that I have seems to flame out a lot and the rotostarts where slow and frustrating, but now it's no dramas.
The Ofna chrome top is a bit old school in that it is direct drive and a tad heavy compared to new design boxes, but it is very sturdy and I don't see how it could possibly ever give problems as it is
so ruggedly built. You do have to assemble it yourself, but that is part of the fun.
Highly recommended, but I did have to taper out the edges of the flywheel hole in the chassis a little with a dremel to get a good contact with the drive wheel, but I do have the GPM chassis, but that only took a couple of minutes.
The part number is OFNA 10250 and the car has been used heaps since I bought it, knowing that when I go out, the engine will start instantly every time.
I use a starter box with my RS4 3+..I am using the Ofna chrome top box as it adapts to a right hand mounted engine. It is quite simply the best money that I have ever spent.
The starts are instant, maybe even quicker...the engine that I have seems to flame out a lot and the rotostarts where slow and frustrating, but now it's no dramas.
The Ofna chrome top is a bit old school in that it is direct drive and a tad heavy compared to new design boxes, but it is very sturdy and I don't see how it could possibly ever give problems as it is
so ruggedly built. You do have to assemble it yourself, but that is part of the fun.
Highly recommended, but I did have to taper out the edges of the flywheel hole in the chassis a little with a dremel to get a good contact with the drive wheel, but I do have the GPM chassis, but that only took a couple of minutes.
The part number is OFNA 10250 and the car has been used heaps since I bought it, knowing that when I go out, the engine will start instantly every time.
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RE: OFFICIAL RS4 RTR 3 thread!!!!!!!Also type SS and others
Thats good mkoresh12, you will look back at how you used to start the car and wonder why you didn't do it sooner.
I was starting to lose interest in the car as it was annoying me having to mess around restarting all the time, but now I cant get out to run it often enough.
I was starting to lose interest in the car as it was annoying me having to mess around restarting all the time, but now I cant get out to run it often enough.