R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 03-29-2004, 04:36 PM   #2881
Tech Champion
 
robk's Avatar
 
Join Date: Aug 2001
Location: Macho Business Donkey Wrestler
Posts: 7,403
Trader Rating: 22 (100%+)
Default

I was at the nats and i talked to the Teacher and Derek manchester (not sure if he's on here). It was nice to meet both guys. Didn't talk to David though.

I DNF 3 of the 4 rounds. !st round was an arm, 2nd, my wheel nut backed off, 3rd somebody was stopped at the 180 at the end of the straight and I piled him. Yes I sucked this weekend. 4th round i went 23 5:02 or 03 which was good, but I probably could have done a 24 the round earlier, had i not broken. None the less, i found out a TON about the car. The results don't show it but my car got multi times better as the weekend went on. I started with the Hara setup and made changes from there.

Derek manchester told me he had tried extending the steering knuckle out to reduce the ackerman in the car. That was probably one of the best ideas that came out of the weekend. He told me it freed the car up and it did by quite a bit. One thing I noticed was that my car would steer well, but it felt bound up in the mid corner. This helped a lot, and it also seemed to make the final wheel positions close to that of a TC3, depending on your choice of ballstud position on the steering rack.

Raisng the front roll center by spacing the front mount up helped to get the car steering better as well as rolling thru the corner better. I went 2mm in the front and flat on the chassis in the rear. This might not be ideal, but worked in the limitations of the weekend. I also had no kick up or down in the front, the car seemed to like that best. i layed the front shock into the 3rd hole in from the outside to keep up corner speed as well.

I also ran pro squat in the rear, which will make the car rotate more. I used llike 1mm (?) of difference in the rear. I put the rear ballstud in the inner hole on the hub to get more rotation as well.
Also, i went to 60 wt oil in the rear, and that seemed to really control the roll of the car at the rear.

Like i said the showing was sad considering i was in the H main, but I started 7th and passed everybody except the Teacher. I wish i could have gotten close enough to race him, but time ran out. I got down to a 12.8 in the 3rd round, after which i wrecked my car. Mainly i need to get all the bugs worked out and go clean. Duh.
__________________
A mutually re-enforcing cascade of failure

"Failior [sic] crowns enterprise." Robert Goddard

I-Lap Scoring Systems http://www.rclapcounter.com/
robk is offline   Reply With Quote
Old 03-29-2004, 04:43 PM   #2882
RCTech Member #2
 
TSR6's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2001
Posts: 5,939
Trader Rating: 5 (100%+)
Send a message via ICQ to TSR6
Default

Quote:
Originally posted by rc-zombies
Ahhhh....dorm life...the good ol' days...
I would have partied... on second thought building the car is more fun... there's always a party going on....
had some great times in the dorms....
even though I was never an official resident...
haha.. you were one of "those" people huh? haha.. They're here all the time, most of them moochers. The way I see it, if your a guest, your staying in their room, better bring a bottle, unless it's a lady of course.

Rob - At least you learned about the car at the race. I'll definately keep your comments in mind when I get the #2 ready for putzing around with some foamies.
__________________
Troy
RCTech Member #2

The postings and views expressed on this site are my own and do not necessarily reflect the positions, strategies, or opinions of any company I may be employed by.
TSR6 is offline   Reply With Quote
Old 03-29-2004, 04:54 PM   #2883
Tech Champion
 
rc-zombies's Avatar
 
Join Date: Aug 2001
Location: NorCal. Napa area
Posts: 7,218
Trader Rating: 8 (100%+)
Default

Quote:
Originally posted by TSR6
haha.. you were one of "those" people huh? haha.. They're here all the time, most of them moochers. The way I see it, if your a guest, your staying in their room, better bring a bottle, unless it's a lady of course.

Rob - At least you learned about the car at the race. I'll definately keep your comments in mind when I get the #2 ready for putzing around with some foamies.
me no moocher...
mainly a weekend resident...
__________________
HB WCE HARA EDITION CYCLONE: LRP Sphere TC, KO 2363 digital servo.
HB HARA EDITION PRO4: Gone to a new home..

SPEEDTECH|FUTABA|KO|ORION|SPEEDWORLD|HARA
rc-zombies is offline   Reply With Quote
Old 03-29-2004, 04:57 PM   #2884
Tech Master
 
Coxy's Avatar
R/C Tech Charter Subscriber
 
Join Date: May 2002
Location: Sydney Australia
Posts: 1,729
Default Set-Up

Question about the Pro 4 Set-up guides in the Manual.

How can MORE castor give you more turn in and less exit steering

Coxy.
Coxy is offline   Reply With Quote
Old 03-29-2004, 05:05 PM   #2885
Tech Fanatic
 
Join Date: Jun 2002
Location: Modesto, Ca
Posts: 991
Default

just my opinion...more caster gives more camber change when the car settles in...therefore it would give more steering. Some people see it different but this is what I have seen on the track.
James Nguyen is offline   Reply With Quote
Old 03-29-2004, 05:08 PM   #2886
Tech Master
 
Super Steve's Avatar
 
Join Date: Oct 2003
Location: Toronto, Ontario, Canada
Posts: 1,177
Trader Rating: 9 (100%+)
Send a message via AIM to Super Steve
Default

OOOOO
gears in different polymers?

sounds interesting and let us know what you are up to!
Super Steve is offline   Reply With Quote
Old 03-29-2004, 05:14 PM   #2887
Tech Champion
 
rc-zombies's Avatar
 
Join Date: Aug 2001
Location: NorCal. Napa area
Posts: 7,218
Trader Rating: 8 (100%+)
Default Re: Set-Up

Quote:
Originally posted by Coxy
Question about the Pro 4 Set-up guides in the Manual.

How can MORE castor give you more turn in and less exit steering

Coxy.
having more caster does result in more initial steering..
the angle of the of the tires is greater when going into a turn..thus having more grip. the car tends to be more stable in the straights vs one with less caster...and the opposite is true..
less caster...more mid and exit speed... you'll have to tune to find that sweet spot...

my 2 yens...
__________________
HB WCE HARA EDITION CYCLONE: LRP Sphere TC, KO 2363 digital servo.
HB HARA EDITION PRO4: Gone to a new home..

SPEEDTECH|FUTABA|KO|ORION|SPEEDWORLD|HARA
rc-zombies is offline   Reply With Quote
Old 03-29-2004, 06:03 PM   #2888
Tech Regular
 
Join Date: Mar 2003
Location: Michigan
Posts: 248
Default

Rob-Derek here. Glad to here it helped your car. I need to make my set a little shorter. I didn't try it there due to the lack of spare parts at this time. I used a front shock tower to make the extentions if anyone was wondering. At the nats, I was a victim of my own stupidity. I forgot to change my rear camber back to were it was in practice. I was running losi 1 degree hubs reversed in the rear. And those require a longer camber link. So with the camber change I had to run about 3 degrees of rear camber. Sounds like alot but it worked great. I went to 2 degrees and it spun out in everyother turn. Opps! My car was dialed before I got there and in practice but I changed TOO much stuff before the quailifiers.

I seen David Joors car and talked to him for a few minutes. I'm not sure the lower 3 mm chassis is needed. The upper deck did raise and eyebrow. If you do use a 3mm chassis I see 3d cutting is a high priority. The thickness of the chassis changes your roll centers and cg too much. 3d cutting will take care of that.

I too learned alot about the car this weekend. I have a few good ideas in the works for next season. But with our outdoor season 4-6 weeks away. I'll be getting ready for that.


Laser R/C Speedway
Adrian, Mi.
"Everyplace else is just a parking lot!"
Downforce is offline   Reply With Quote
Old 03-29-2004, 10:36 PM   #2889
Tech Adept
 
Beeb's Avatar
 
Join Date: Mar 2004
Location: Thornton, CO
Posts: 136
Send a message via AIM to Beeb
Default Question

I just put together a diff for my front end and when I turn one side while holding the bevel gear it moves in steps. Like it has no resistance then a little then none etc...

Does this mean that the balls have flat sides on them? or maybe the D-discs have divots in them? or what?

I didn't feel this in the original diff that I put in my car so I'm curious if I've ruined the diff or something??

Thanks for any help.
Beeb is offline   Reply With Quote
Old 03-29-2004, 10:43 PM   #2890
Tech Champion
 
RCGaryK's Avatar
 
Join Date: Sep 2003
Location: Champaign, IL
Posts: 7,331
Trader Rating: 3 (100%+)
Default

Here's one of the happiest Pro 4 owners from the Nats...Great run in the main Teacher, you schooled them!
Attached Images
File Type: jpg teacher.jpg (165.3 KB, 288 views)
__________________
Site Content Specialist- Surface
HorizonHobby.Com

Horizon Hobby is on YouTube with hundreds of different videos! Visit us at
http://www.youtube.com/HorizonRCdotCom
RCGaryK is offline   Reply With Quote
Old 03-29-2004, 10:44 PM   #2891
Tech Adept
 
Beeb's Avatar
 
Join Date: Mar 2004
Location: Thornton, CO
Posts: 136
Send a message via AIM to Beeb
Default

Quote:
Originally posted by RC Driver Gary
Here's one of the happiest Pro 4 owners from the Nats...Great run in the main Teacher, you schooled them!
Thank God there was a pro4 running in the mains.
Beeb is offline   Reply With Quote
Old 03-29-2004, 11:05 PM   #2892
Tech Master
 
Join Date: Oct 2001
Location: Kansas
Posts: 1,596
Send a message via Yahoo to Doug Gaut
Default

What springs will be the most commonly used for outdoor asphalt and concrete? We used to use white springs on the older rs4 cars.
Doug Gaut is offline   Reply With Quote
Old 03-30-2004, 12:08 AM   #2893
Tech Regular
 
TeamPRP's Avatar
 
Join Date: Apr 2002
Posts: 406
Default

Quote:
Originally posted by Downforce
If you do use a 3mm chassis I see 3d cutting is a high priority. The thickness of the chassis changes your roll centers and cg too much.
I don't think the .5mm will make too much of a difference. It's not as big of a change as rasing or lowering your hinge pin height on their own.

Last edited by TeamPRP; 03-30-2004 at 01:10 AM.
TeamPRP is offline   Reply With Quote
Old 03-30-2004, 12:09 AM   #2894
Tech Regular
 
TeamPRP's Avatar
 
Join Date: Apr 2002
Posts: 406
Default Re: Question

Quote:
Originally posted by Beeb
I just put together a diff for my front end and when I turn one side while holding the bevel gear it moves in steps. Like it has no resistance then a little then none etc. . .
Your diff rings might not be fully seated. Does your diff look like it "wobbles" when you spin it?
TeamPRP is offline   Reply With Quote
Old 03-30-2004, 05:05 AM   #2895
Tech Elite
 
The Teacher's Avatar
 
Join Date: Aug 2001
Location: Washington, DC
Posts: 4,657
Trader Rating: 44 (100%+)
Default

hehehehe....thanks for the pic RC Driver Gary it was nice meeting you.
The Teacher is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 03:43 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0