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Apparently "Ultra" wasn't enough
- Thread starter snicklefritz
- Start date
snicklefritz
Quarry Creeper
Yeah, my controller has the ability and I'll use it for fun crawling for sure. But for the track I'd just get myself in trouble so I want to stick with just enough full time 4ws to make up for the steering ability I lost in the IFS conversion. That's the plan at this point.
Bronco Bobby
Quarry Creeper
Loving the second picture. Looks mean. Have fun testing tomorrow. I will just stay here tied to the truck with a 3 foot rope...but you go and have a good time.
Erin
I wanna be Dave
Is the knuckle hitting on both sides equally? Im pretty sure my exo with mips has more throw then that. Ill check tonite after I get it back together.
I like the rear having just a little steer, not to much. Be more controllable at speed.
I like the rear having just a little steer, not to much. Be more controllable at speed.
Erin
I wanna be Dave
Rockpiledriver
I wanna be Dave
I would limit the rear just a bit. Can you move the drag link to the closest hole, or change to a servo horn with a super short throw? Then do what Erin said and it will get around all the turns just fine. you may not even need the rear steer with throttle steering in the tight turns.
Bronco Bobby
Quarry Creeper
Hey schnitzel, it does look like erins turns sharper. I checked out harleys thread on his conversion, and at one point he said he had to bend some aluminum parts to align things like shocks, which I seem to remember allowed him to change his steering slightly. Maybe that would help the front of yours (not that you need it with 4ws).
Erin
I wanna be Dave
The BMRC kit also needs the bell cranks pushed forward about a 1/2" to get correct geometry. Theres a pic in the wrexo thread of that as well.
Bronco Bobby
Quarry Creeper
Yep that is also what I remember Harley talking about
snicklefritz
Quarry Creeper
Right on moving the bell crank forward. It looks like Erin did that cuz the links are more parallel. Thus more turning. I hope I don't have to drill more holes in the top plate cuz they're already close to the edge. I'm trying not to lose my head. Uh huh huh huh. Huh.
Can't wait to drive this tomorrow. Gonna limit the rear steer a little from that pic and go from there.
Edit. Looked at Erin's pic again. That's an Exo chassis. I knew that.
Can't wait to drive this tomorrow. Gonna limit the rear steer a little from that pic and go from there.
Edit. Looked at Erin's pic again. That's an Exo chassis. I knew that.
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snicklefritz
Quarry Creeper
Loving the second picture. Looks mean. Have fun testing tomorrow. I will just stay here tied to the truck with a 3 foot rope...but you go and have a good time.
Dude. Come out. I'll pick you up at 1:00.
snicklefritz
Quarry Creeper
I agree with limiting the steer. I had fun with the 4ws in my driveway but it's way more than I'll need. I'm going minimal. It's a simple setting on the controller. Once I figure out what works it's set it and forget it!
I know I'll need SOME rear assist after watching Duncan's video again. Look at the 3 point turns and how much he flipped over. He wouldn't have flipped as much if better steering allowed him to nail the approaches. As fast as he was, he would be untouchable without the 3 point turns and rollovers. That's what I'm going for!
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snicklefritz
Quarry Creeper
I'm using vanquish knuckles and strc carriers. That first pic shows the inside tire limited by the knuckle hitting the carrier. The outside tire would be sharper with parallel links ( forward bell cranks ) but I don't know what could be done about the knuckle on the inside. When I move the bell crank forward there will be two more conflicts that will limit steering. 4ws is actually the easy way. It was pretty darn controllable at full throttle and low and high traction. I was surprised.
The shocks have spacers off the oddly angled towers. I don't know why they made them that way but I don't want to mangle them just yet. :shock:
That's the prob!!! steering sucks!!! Personally I don't know if I would run rear steer full time. Its going to suck when your going fast and just try to correct when you get a little out of shape and that rear try's to steer. Its going to try to make you flip. As you've seen I've gone back to a straight axle and am going to try some different set ups on suspension. I'm going to still work on the IFS steering parts so I hope I can get it to work right. Most of the people don't race so the IFS works for them(at least on a tight track).....I'm really going to watch your rear steer :mrgreen:.... Not that I'm going to do it though.
What cvds are you running?? I haven't seen any cvd other than MIP's that hold up to a locked front diff, or are you open?
snicklefritz
Quarry Creeper
I was really impressed by how your beast soaked up every bump and looked so "real" in the handling on the track. Mine looked silly bouncing around by comparison. I'm watching your thread too to see if you can get a solid axle as dialed in as your IFS. I'm just glad I won this BMRC kit because I'm no fabricator and I'm trying to do the best I can with off the shelf parts!
I've got the same cvd's as scottanthony. Steel, dogbone at the diff, and $20 on eBay. I'm hoping they hold up. They're definitely beefier than stock Exo but way lighter than MIPs. I'm a pretty conservative driver so it seems like a good setup for me.
I'm "open" with plumber's putty in the diff. That should be plenty of lockedness unless they really fawk with the boulders.
Don't get any ideas, Jerry.
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I know it won't work as good as the IFS, but I'm going to try the trade off for the turns. Open will be a big difference on turning... I know Boltz has broke a few. He was looking at going to mips I think. Here was looking my rig over and asking questions.
My steering and turns got a little better or yet improved as I added more castor by flipping the front suspension bracket right side up and replacing the front rear suspension bracket for the rear bracket inserts angling the suspension arms more to get a positive camber on the inner tire on steer-in. Oh and I moved the steering rack 1/2" forward.
Erin
I wanna be Dave
He and I talked about mips at nats also. Im going to try the mips first on a track here in town with some tight 180s, if it suck Im going to the blitz cvds with 500k diff fluid.
That and the sc wheels should allow it to steer enough, since it wont have the scrub you were fighting at 13"
