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Old 07-15-2002, 09:29 PM   #2506
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Randy: Feel free to email me and I'll send you my setup for asphalt.

Pit Racer: The modification involves raising the front hinge pins to increase the steering of the car (and it works). There are pictures some pages back. It involves using a Fireblade piviot block for the rear of the hinge pin and a spacer (or there is another Fireblade part that works...but be careful with the chassis and run a brace). The front of the steering blocks (the part the steering screws are screwed into) also get cut off. I'm doing another car this week, I'll try to take some pictures and post them in the next couple of days...
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Old 07-15-2002, 09:35 PM   #2507
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O.K. Racer X I'll look for it and also wait to see your pics....maybe with part #'s. Also can you send me your asphalt set-up for the mission?
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Old 07-16-2002, 10:18 AM   #2508
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Hello Gents...long time...

From the sounds of it the roll center mod is something you want to do, regardless of racing on carpet or asphalt...is this correct? Sorry if its a redundant question, been away for a while and trying to catch up...

TIA for any responses...
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Old 07-16-2002, 04:50 PM   #2509
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Mark G.....I feel that the front roll center mod is great on both types of surfaces. I tried it last weekend on foam tires on carpet and it worked very well.
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Old 07-16-2002, 05:18 PM   #2510
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markg: I race on outdoor asphalt and I don't think the mod is something thats absolutely neccesary. At least not in my mind. My car has all the steering I could ever want, even on extremely tight courses. I haven't tried the rollcenter mod, but I can't imagine why I would need even more steering than I have now. With my car set up well, and the right tires, I see no need to make mods like this to the Mission. But thats just the way I see it.
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Old 07-16-2002, 05:31 PM   #2511
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Have any of you had any problems with the front one-way on the mission? My bearing in one of the outdrives fell apart after only a few runs.
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Old 07-16-2002, 05:42 PM   #2512
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As with just about any change, adjustment, or mod, not everyone will need it (or even like it) depending on their setup and local track condition. It does add steering, but also seems to even the steering out more (evening the off power oversteer, on power push). Its just something else to try and experiment with. At the tracks I run, I highly reccomend it...pictures still coming

Pit Racer: The setup is on the computer at work (how did it get there?). Today I was out of the office most of the day, so I'll send it to you tomorrow...
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Old 07-17-2002, 06:54 AM   #2513
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See, I get no on power push at all. It pretty much goes right where I want it to, even on power. The off power oversteer I control by limiting the steering throw. What little bit of oversteer is left after that, I consider benefitial. It lets me snap the rear end around in a hurry.....if I need too.
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Old 07-17-2002, 07:28 AM   #2514
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Thanks for the input guys...I may try it, just to see what it does, but like darkside says, I dont feel I need any more steering...however, if it allows more throttle through the corners, and thus more corner speed, it may be worth it...

In making this mod I understand you cut off the rear hinge pin mounts from the steering supprts...when you do this you only have two screws remaining holding each side of the steering in place (if you use the aluminum rear hinge pin parts)..anyone had a problem with slop in the steering after...it seems this would make the steering connection to the chassis less secure..
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Old 07-17-2002, 08:23 AM   #2515
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Mark, not a problem, there are still 2 screws there and providing they are tight and the threads not stripped it will be fine. Only having one screw in the alloy blocks that you then use can be an issue if you have a hard impact though.
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Old 07-17-2002, 03:32 PM   #2516
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Thanks MattW....

So how many Mission pilots are we gonna have at the Nats in Colorado next week? Who are the front runners to keep an eye on?
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Old 07-17-2002, 06:41 PM   #2517
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Roll Center Mod:

Remove the front hinge pin holder, the hinge pins and the steering mounts

Cut the steering mounts at the U shaped part of the mount (see picture)

Reattach the steering mounts and steering

Mount the new hinge pin mounts from the Fireblade from the inner screw previously used for the front of the steering blocks. Note: R block goes on left side, L block on the right

Make a spacer from carbon fiber or fiberglass (or use the 3d Fireblade mounts with a top brace to prevent the mounts from pulling through chassis) that mirrors the front hinge pin holder (see picture)

Cut the hinge pins to length (approx 1 5/8th inch or 42mm)

Assemble using additional spacers as needed to take up any slack on the hinge pins


I believe that just about covers everything. Any mistakes I'm sure will be quickly pointed out and corrected. Hope that helps those who have had questions reguarding this mod.
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File Type: jpg steering block mod sm.jpg (31.2 KB, 129 views)
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Old 07-17-2002, 06:45 PM   #2518
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Here's the front spacer picture:
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File Type: jpg front mount mod sm.jpg (27.0 KB, 137 views)
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Old 07-17-2002, 06:47 PM   #2519
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MarkG: Wish I was one of the driver who were going to be there...

Good Luck to PW, Alex, Timmy, and the rest of the Schumacher crew!
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Old 07-17-2002, 07:37 PM   #2520
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Thanks for posting the Pics Racer X...

Funny I had thought of doing it the same way, using some carbon as a spacer and brace to raise the front mounts to the height of the rear mounts, what thickness is that carbon?...

Alternatively: for the rear mounts could you use either of the rear pin mounts from the mission, as you are trying to attain the same roll centre as the rear end?

I will grab some extra steering posts as spares so I can try this mod and revert back to standard when needed. Cheers
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