Schumacher Corner

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Old 04-26-2002, 04:26 PM
  #1951  
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Dont laugh guys but quite a few people down here have been using Tamiya rims. They are really quite good and the cheapest around. they are plastic with a little bit of flex unlike the Schumacher ones. They are almost as light as Sorex rims and also seem quite durable. Of course I dont hit boards though as I know none of you guys do either! hehe
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Old 04-26-2002, 04:27 PM
  #1952  
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Cross wheels are the perfect combo of flex and durability.
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Old 04-26-2002, 04:46 PM
  #1953  
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Im with Sir Speedy the Cross rims are some of the best around and they are cheap 10 bucks for 8 rims how can you beat it.
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Old 04-26-2002, 05:08 PM
  #1954  
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Hey guys here is something that I have been playing around with and thought I would share it with the rest of you. I have been using raised roll centers on my lower suspension on my Mission for some time now. What I did was take an old chassis and cut it up to make plates but now I have and easier way to accomplish this. I used some parts off the Fireblade car part #u1988 Alloy pivot pin blocks 0deg and part #u989 Alloy 3deg blocks. What you can do is use these in the front of the car to hold the lower hinge pins. This mod will replace the front plastic piece that changes the front arm sweep, the down side is that now you will not be able to use the 2deg arm sweep option. You also have to cut your front hinge pins down some to fit. You will need to cut the front part off of the steering supports, these are the plastic pieces that you hinge pins go into now. I have pics that show all of this for you. I used the 3 deg blocks in the front to get the correct alignment and the 0 deg blocks on the back side. When you do this the pieces are marked left and right but you will use them on the opposite that they are marked. When you do this you will be able to raise the roll center by adding washers or spacers under the blocks and not have to raise the whole top plate as well like I had to do when I used the plates before this. The effect of this mod is that it will give the car more middle and exit steering in the corner.

Here are the Pic's if there is any questions leave them here and I will help ya out or Adrian or Paul can aswell
Attached Thumbnails Schumacher Corner-mission-roll-center-mod-1.jpg  
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Old 04-26-2002, 05:09 PM
  #1955  
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Pic two
This shows what part of the steering support that you need to grind or cut away.
Attached Thumbnails Schumacher Corner-mission-roll-center-mod-2.jpg  
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Old 04-27-2002, 12:23 AM
  #1956  
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Kevin
Could you post the setup you are using with this lower arm mod?
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Old 04-27-2002, 12:30 AM
  #1957  
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Great idea Kevin, maybe Cecil and the boys will take your idea and rum with it by making a block set for the Mission that will include one to also use the 2deg sweep position. Maybe Adrian or Paul could pass it on. On a second note, as an off-roader also, to Adrian; is there any plans to release a CAT3? based on the Mission formula? Thanks!!!
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Old 04-27-2002, 08:58 AM
  #1958  
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Originally posted by Kevin K
...10 bucks for 8 rims how can you beat it.
Well the OFNA split spoke wheels that I got were 8 bucks for 8 rims!
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Old 04-27-2002, 09:34 AM
  #1959  
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Kevin K- I have also been running the raised roll center for about 2 months now. I really like it. I did the alloy block mod last week. Turned out really nice.
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Old 04-27-2002, 10:32 AM
  #1960  
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Raised roll centre

Guys, the factory is well aware of this mod for the front of the car. We have been testing a slight variation on it for about 6 weeks. We have been running with the origional front brace (spaced up), with the 0 deg fireblade block where the steering part once was. It is mounted in the outer hole rather than the inner hole that Kevin has used. The advantage of this is that you still have the variation of arm sweep, however if you try and run parallel it actually "toes in" very slightly. For this reason we have been running the 2 deg outward arm sweep. I think it is more like 1.5 deg with this mod.

We spoke about running it like Kevin's a couple of weeks ago, but personally i don't really want to go there as it leaves the front of the chassis to weekened for my liking (one of the proto cars suffered a broken chassis with a similar arangement).

However, just to add a slightly different slant to it, the guys that went to the LRP Masters last weekend tried the mod and then removed it as it mave the car "evil" on corner exit. Because of how the block is, it is very easy to reverse as you simply have to turn the block the other way round.
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Old 04-28-2002, 06:38 PM
  #1961  
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Ottoman....here it is

Front
Shocks #1 on the tower
inside on the arm
67mm long
losi 70wt oil
Associated #2 pistons
Losi blue springs
1/2 deg toe in
2 deg camber
castor shims on the front
lower arm spaced to the front
Inline on the hub
Center track rod 2mm longer then stock
Raised roll center in front 1.5mm over rear RC
1mm of anti dive in the front
Ride hight 5mm and 3mm droop over ride hight
Up on the upper arm

Rear
Shocks #2 on the tower
inside on the arm
67mm long
Losi 70wt oil
Associated #3 pistons
Losi Silver springs
3 deg of rear toe per side
Camber 1 deg
Lower arm spaced to the rear
Inline on the hub
No anti squat
Ride hight 5.5mm 4mm of droop over ride hight
Up on the upper arm

Other notes
Thick sway bar in the front and Thin in rear connected to the lower arm.
Ran Sorex 28's with Echo Yellow High traction inserts allt he way around.
Geared 23/92 with a 20t pulley
Used 1way Diff
This was the best set up that I have used on carpet rubber tires yet, its a shame that now we are going outside
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Old 04-28-2002, 06:48 PM
  #1962  
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Darkseid....yeah they may be cheaper but I have seen way too many of the Ofna rims crack and they are also a little off on the size, they seem to be bigger then most standard 24mm rims and taller too. But if you like them run with them.

Corrner Speed.....I have been running the raised RC for a while and like the effects of it on both Rubber and on Foams as well.

MattW...Thanks for info and the support. Hey I broke a chassis with the stock pices over the winter. I have a little brace that goes between the two front alm blocks that acts like a support but if you hit hard enough to break a chassis I dont think there is enough braces to help you.
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Old 04-28-2002, 09:31 PM
  #1963  
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Kevin

Thanks for the setup... as soon as I gather the parts I will give it a try. But I have a problem with my current setup... the last two weeks at Trackside I have been fighting a push comming out of the corner, mostly on the tight corners. I played with caster and it got a little better but I dont think thats the answer. I am still running pretty close to the low roll center setup you posted a while back. Any ideas?
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Old 04-29-2002, 08:14 AM
  #1964  
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Also, I noticed for this front raised roll center that I had to reduce the shock length from 66mm to 65mm. Otherwise the piston will hit the top of shock body. Check yours Kevin K to see if yours does the same.
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Old 04-29-2002, 09:14 AM
  #1965  
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Hi guys,
About a week ago, I was posting about my unusually high ride height in the rear. I solved this by adding 1mm spacers between the diff mounts and shock tower. I placed 4th in expert stock and the car was dialed. The only reason I did'nt do better is because of my driving. The car was just as fast as the TQ.
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