R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-21-2002, 02:58 AM   #3031
Tech Elite
 
Lonestar's Avatar
 
Join Date: Oct 2001
Location: Switzerland
Posts: 2,335
Trader Rating: 13 (100%+)
Default Good News!

Folks,

yesterday was a great day for my TC3.

- I swapped my Hitec 525MG for a JR 8411 (my 8th scaler back-up throttle servo, very trustworthy) because I remembered some old horror stories about drifting neutral on Hitec servos, not due to the servo arm moving on the output gear, but to electronic problems.
- I looked in detail into the rollbars... it looks like one of them was slightly bent. I bent it back with pliers, although I'm not too sure it's any better than before...
- I trimmed as much foam I could from the bumper in order to be absolutely sure that the front wheels would not touch it under transients.

and, miracle, the car now accelerates straight (servo or rollbars(?)), and turn the same both sides (servo rollbars(?) bumper), even on old rubbers with a 10 triple.

Saying I'm relieved is an understatement. Thanks to all for the hlp and suggestions.

Now for the rear toe problem... Although I don't really agree with how MystRacing is complaining, because I'm sure Tony tries his best to help us on this board, I can understand Myst's point. I believe technical companies in general (not especially RC) have a bad habit of blaming circumstances, context, or even the users to dissimulate design flaws... like when Microsoft patches outlook to reinforce security against viruses, when it's actually a security hole... that kind of stuff. No matter how I dislike being told that my car is crooked because I assembled it wrong, on the other hand, it's not so uncommon for RC companies to get an RTR car back under warranty because a kid plugged the speedo backwards, and I can also admit I did something wrong. I guess it's a difficult balance to handle... Just remember that one of RC's biggest guns, Serpent, lost LOTS of customer in 2001 and 2002 because they were unable to admit the NT's and Veteq's design flaws, as claimed by their most faithful users, were real... The wind turns pretty quick in the RC world. But evry time I had an AE car, I was pretty happy with customer support (is GAry still working there? This guy was pure gold)

Anyways... my car is now cured, and I'm a happy camper yeepee! yeepee!

Later yall
Paul

Last edited by Lonestar; 11-21-2002 at 03:14 AM.
Lonestar is offline   Reply With Quote
Old 11-21-2002, 03:10 AM   #3032
Tech Elite
 
Lonestar's Avatar
 
Join Date: Oct 2001
Location: Switzerland
Posts: 2,335
Trader Rating: 13 (100%+)
Default oh yeah...

... the 4-scale experiment.

Sounds like those of you claiming that total lateral and longitudinal weight don't change when changing the spring were right... and I was wrong.

here's my experiment.

Measurement 1: balanced car
FL 354g
FR 352g
RL 367g
RR 379g
total left: 721g
total right: 731g
total front: 706g
total rear: 736g

Measurement 2: completely unscrewed RR shock collar:
FL 240g
FR 465g
RL 478g
RR 266g
total left: 718g
total right: 731g
total front: 705g
total rear: 744g

I guess the results speak for themselves... There is a slight discrepancy on total measurements. These are good quality scales, but you probably can even buy better ones... if you've got the gold. However, the highest incoherence we have is on rear weight, 8 grams on more than 700 grams, ie a little higher than 1%... hard not to agree then.

jsp: thanks for making me see the light.

Cheers,
Paul and his now-straight-tracking-FTTC3

PS: I have the pictures of the scales display to prove it...

Last edited by Lonestar; 11-21-2002 at 04:09 AM.
Lonestar is offline   Reply With Quote
Old 11-21-2002, 03:23 AM   #3033
Tech Regular
 
Join Date: Oct 2001
Location: Paris - France
Posts: 398
Trader Rating: 2 (100%+)
Default

LoneStar,

Do you have a good carpet set-up using Take-Off Corally Type A ?

Regards
Ralf is offline   Reply With Quote
Old 11-21-2002, 04:05 AM   #3034
Tech Elite
 
Lonestar's Avatar
 
Join Date: Oct 2001
Location: Switzerland
Posts: 2,335
Trader Rating: 13 (100%+)
Default

Ralf,

non, pas de setup... je viens juste de toucher la voiture, et j'ai ma première course avec, sur moquette justement, ce samedi.

just a few words in French... it's refreshing on this forum!
Go chek Tony's site, I'm sure there's a few carpet setups there.

Later

Paul
Lonestar is offline   Reply With Quote
Old 11-21-2002, 06:28 AM   #3035
Tech Elite
 
TPhalen's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Brookfield, CT
Posts: 2,793
Trader Rating: 2 (100%+)
Default

First off, sorry I exploded. MystRacing. Sorry to you too that I might have come off a little pissy. Well, I was.

Anyway. More parts are sold than kits, I'm guessing. As for sheer numbers, I would have no idea. I guess I could ask around but I'm not sure that is 'common' information....something I could tell the public, you know??? But it won't hurt to ask...those numbers have to be SOMEWHERE!!!

I was sort of exaggerating when I said millions but, when you think about it.... kits, parts and a 5 year run. Might just be millions....

French. Nice. But, Lonestar....what did you say???? heh heh
__________________
Tony Phalen
UF1 Team Lotus/Renault
RCDriver.com
CompetitionX.com
R Sector / F1 Paint Labs

Last edited by TPhalen; 11-21-2002 at 06:30 AM.
TPhalen is offline   Reply With Quote
Old 11-21-2002, 07:32 AM   #3036
Tech Regular
 
Join Date: Oct 2001
Location: Paris - France
Posts: 398
Trader Rating: 2 (100%+)
Default

Tony,

Lonestar said that he doesn't have a carpet set-up for me, he is still new to the TC3 and will have his first race on carpet this saturday...

a bientot,
Ralf is offline   Reply With Quote
Old 11-21-2002, 08:15 AM   #3037
jsp
Tech Regular
 
Join Date: Sep 2001
Location: escondildo,ca.
Posts: 483
Default

Lonestar: The numbers you gave for the balanced car are not balanced. The cross weight of left front and right rear is 14 grams heavy. To balance the car, add the left rear to the right front and it should equal the right rear plus the left front. These are the cross weights and they should be equal. Good luck.
jsp is offline   Reply With Quote
Old 11-21-2002, 10:25 AM   #3038
Tech Initiate
 
Join Date: Nov 2002
Location: Colorado
Posts: 38
Trader Rating: 2 (100%+)
Default

Tony - Sorry, My Bad, I read something into your post that wasn't there. I deleted the posts.
MystRacing is offline   Reply With Quote
Old 11-21-2002, 06:52 PM   #3039
Tech Elite
 
TPhalen's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Brookfield, CT
Posts: 2,793
Trader Rating: 2 (100%+)
Default

No prob....deleted my post also.....
__________________
Tony Phalen
UF1 Team Lotus/Renault
RCDriver.com
CompetitionX.com
R Sector / F1 Paint Labs
TPhalen is offline   Reply With Quote
Old 11-21-2002, 07:36 PM   #3040
Tech Elite
 
Boomer's Avatar
R/C Tech Charter Subscriber
 
Join Date: Feb 2002
Location: Southern Cal - Claremont
Posts: 3,337
Send a message via ICQ to Boomer Send a message via AIM to Boomer
Default

Quote:
Originally posted by jsp
Lonestar: The numbers you gave for the balanced car are not balanced. The cross weight of left front and right rear is 14 grams heavy. To balance the car, add the left rear to the right front and it should equal the right rear plus the left front. These are the cross weights and they should be equal. Good luck.
Hmmmm? You mean you don't want the total Left weight to equal the total Right weight?

Lonestar, you are about 3/10's ounce off balance left/right.

So, all, which is it supposed to be? L/R or FL+RR/RL+FR ?
__________________
-
RC10L2.5W - RC12.4 - RCNTC3(bmi) - TC4 (modded) - B44.2 - plus rent-a-rides! :D
Boomer is offline   Reply With Quote
Old 11-22-2002, 12:47 AM   #3041
Tech Elite
 
Lonestar's Avatar
 
Join Date: Oct 2001
Location: Switzerland
Posts: 2,335
Trader Rating: 13 (100%+)
Default car balancing

Folks,

thanks for all the comments. I believe at some point the noise in the measurements is too high to go any further in adjustments... if I'm off 14g on 700, it's only 2%. It could be a sticky shock shaft, an insert that's slightly softer in a tire, an air bubble in a shock, or Alec Issigonis knows what else...

For me, the car was balanced the 4 packs I drove it yesterday night.... It didn't display any parasitic behaviour that I could feel from the drivers' stand any more. I'm feeling like fiddling with it any more for a 2% weight difference, if any. now I wanna DRIVE! Yeah baby!

I finally fitted some foams and a front one way on the car yesterday night. After four turns, I was turning laps in the low 14's (14.2 to 14.5). I opened the toe a little bit, and reduced droop. At the next pack I was turning 14's flat. My best lap on this track in my Axis was a 13.99, and I'm pretty sure I have a nice progression margin left with my TC3.

I broke a front A-arm though. This is my first breakage on any car since I started runnign electric again. I guess old demons never really disappear... I also lost a coupe of wheels because of these stupid blue wheel nuts that are too thick. A buddy of mine lent me some B3 wheelnuts for tomorrow's race. I suggest they get included in the next batch of kits... There's no point in throwing these big fat blue nylstops in the FT kits if they're so thinck you cant get to the nylon part!

The part I like most with this car is maintenance. Swiching from a diff to a one way is a 2mn deal... That's some serious progess ofver the double deck cars!

I have to admit I'm happy with my new ride. I bought a set of front A-arms for tomorrow, though. Too bad that stupid importer hasn't started distributing the newer ones here (switzerland) yet...

Have a good WE yall

Paul
Lonestar is offline   Reply With Quote
Old 11-22-2002, 07:22 AM   #3042
Tech Adept
 
Dingus's Avatar
 
Join Date: Apr 2002
Location: Phoenix AZ
Posts: 235
Default

I always had to thread the nuts on backwards when running foams. I never lost any, but I never ran more than a 19t motor. I think Trinity makes some lower profile nuts.

So where in Austin did you race??
Dingus is offline   Reply With Quote
Old 11-22-2002, 10:37 AM   #3043
Tech Master
 
Peter Busch's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Minnesota
Posts: 1,491
Default

Just get the low profile nuts, they stay on really well.

Hey Tony, did you get my email?
Peter Busch is offline   Reply With Quote
Old 11-22-2002, 10:37 AM   #3044
Tech Master
 
Peter Busch's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Minnesota
Posts: 1,491
Default

Just get the low profile nuts, they stay on really well.

Hey Tony, did you get my email about droop/uptravel?
Peter Busch is offline   Reply With Quote
Old 11-22-2002, 12:33 PM   #3045
Tech Apprentice
 
Join Date: Oct 2002
Posts: 71
Default Interesting tire wear (again) on my new Take Offs......

Running my TC3 this afternoon, already I am noticing a wear line on the left front tire just to the inside. It is (for lack of better words) beginning to form a groove. My camber is about 1 degree. I noticed this before on other tires, as well. It appears to only happen on the left side tires - both front and rear. Although, so far, I don't notice the left rear tire showing this. I am talking about only after 3 packs. Any advice is welcome. Thanks!

I am wondering if this might possibly be a problem inherent with the TC3, since it seems the most weight is on the left side. Now; I haven't added any additional weighting to the right. Does this make any sense, or am I out in left field?

And.....these Take Offs are premounted, by the way.

Greg

Last edited by GKHTC3; 11-22-2002 at 12:37 PM.
GKHTC3 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
New to the forum mig rod Electric Off-Road 1 01-05-2008 04:23 PM
hi i need help and im new to the forum racer4 Rookie Zone 4 01-21-2007 01:37 PM
Why is this forum listed under the On Road Forum? sport10 Onroad Nitro Engine Zone 0 01-11-2007 07:06 AM
Forum Changes... futureal Wisconsin & Illinois Racing 3 10-28-2002 08:26 PM



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 02:35 AM.


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