Go Back   RCCrawler Forums > RCCrawler Brand Specific Tech > Superclass Crawlers > Tamiya Clod Buster
Loading

Notices

Thread: shock angle

Reply
 
LinkBack Thread Tools Display Modes
Old 05-03-2006, 04:42 PM   #1
Pebble Pounder
 
Join Date: Sep 2004
Location: Brooklyn, NY
Posts: 124
Default shock angle

I just finished building my crawler. I took it out side on to the street and drove it around. This is my first crawler so I think I did something wrong. I think its the shock angle. I think that it might be too steap. her is a link to a drawing I did. the black lines are the links, the red lines are the shocks: http://putfile.com/pic.php?pic=5/12217383938.jpg&s=x402
The problem Im having is firstb of all when I turn and drive the truck 3-wheels. no matter how fast I go. also when I turn then return to going straight, the whole chassis is tilted to the direction the truck was turned to. The only way to get the chassis back to being straight is to turn the other way and drive.
I know that this is wrong. So is it because of my shocks being too steap?
(The shocks might be even steaper than in the pictures)
skrewdriver is offline   Reply With Quote
Sponsored Links
Old 05-03-2006, 04:46 PM   #2
I wanna be Dave
 
Join Date: Mar 2006
Location: One Legend.
Posts: 2,134
Default

You didn't say, but i assume you have a shafty...

Probably a TLT from your drawing.

Do a search on "Torque Twist" to learn about fixes ranging from stronger springs, link locations, shock position, etc.

Hope that helps!
Unholy is offline   Reply With Quote
Old 05-03-2006, 04:51 PM   #3
Pebble Pounder
 
Join Date: Sep 2004
Location: Brooklyn, NY
Posts: 124
Default

oh sorry. Its actually a CLOD. The chassis is a cutom one. It doesnt look exactly like that but its close enough.
skrewdriver is offline   Reply With Quote
Old 05-03-2006, 04:52 PM   #4
I wanna be Dave
 
Join Date: Mar 2006
Location: One Legend.
Posts: 2,134
Default

Then scratch everything I said above!
Unholy is offline   Reply With Quote
Old 05-03-2006, 05:00 PM   #5
Pebble Pounder
 
Join Date: Sep 2004
Location: Brooklyn, NY
Posts: 124
Default

Yeah if I had a crawler with drive shafts I know it could have problems like a 1:1 truck.
Problems like torque twist. but its not a drive shaft truck so...... Was I correct about the shocks being too steep?
skrewdriver is offline   Reply With Quote
Old 05-03-2006, 05:23 PM   #6
I wanna be Dave
 
Join Date: Mar 2006
Location: One Legend.
Posts: 2,134
Default

<------- Not a Clod guy.

Can't be of any help to you.
Unholy is offline   Reply With Quote
Old 05-03-2006, 05:31 PM   #7
Quarry Creeper
 
Join Date: Oct 2004
Location: Cow crap flats
Posts: 341
Default

sounds like your shock/spring combo is too soft.


jim
envious8420 is offline   Reply With Quote
Old 05-03-2006, 05:46 PM   #8
Pebble Pounder
 
Join Date: Sep 2004
Location: Brooklyn, NY
Posts: 124
Default

Quote:
Originally Posted by envious8420
sounds like your shock/spring combo is too soft.


jim
Well Im running stock savage shocks. i even tried to add about an inch and a half of spacers and it didnt get better.

Last edited by skrewdriver; 05-03-2006 at 06:06 PM.
skrewdriver is offline   Reply With Quote
Old 05-03-2006, 06:25 PM   #9
K_B
I wanna be Dave
 
Join Date: May 2005
Location: Anchorage, Alaska
Posts: 2,048
Default

I can't see the picture (blocked at my work ) but it definitely sounds like you could aleviate some of that problem by decreasing the angle of the shocks, like you said. Just do some experimentation... hell, that's half the fun in this hobby!
K_B is offline   Reply With Quote
Old 05-03-2006, 06:26 PM   #10
Rock Stacker
 
Join Date: Dec 2005
Location: Coos Bay
Posts: 88
Default

I have a clod with a Gecko2 chassis, and had the same problem. I had the shocks almost vertical, and it did the same thing. I laid them down and it almost went away. They were like this ( | | ), and then I put them like this ( / \ ), and it made it a lot better.
trevorsride is offline   Reply With Quote
Old 05-03-2006, 06:46 PM   #11
Rock Crawler
 
Join Date: Jun 2004
Location: SW, Connecticut
Posts: 685
Default

Stand up your shocks more. This will increase firmness but decrease travel.
CustomCrawler is offline   Reply With Quote
Old 05-03-2006, 07:17 PM   #12
Pebble Pounder
 
Join Date: Sep 2004
Location: Brooklyn, NY
Posts: 124
Default

Quote:
Originally Posted by trevorsride
I have a clod with a Gecko2 chassis, and had the same problem. I had the shocks almost vertical, and it did the same thing. I laid them down and it almost went away. They were like this ( | | ), and then I put them like this ( / \ ), and it made it a lot better.
well mine are the opposite. there like this(/ \) and the whle thing sucks. I sould probably make them like this (| |)

Also If I make them verticle, I decrease travel- well I run savege shocks and they have quite a bit... so what should I do then?
skrewdriver is offline   Reply With Quote
Old 05-03-2006, 07:58 PM   #13
Pebble Pounder
 
Join Date: Mar 2006
Location: hillsboro
Posts: 172
Default

I just went through the same thing with my modified clodzilla chassis. I reccomend mounting the lower shock mounts closer to the chassis pivot point and the upper shock mount further upward. You still want a little angle , like about 70 degrees. Mounting the top further up provides more uptravel or the use of longer shocks. Mounting the lower closer to the pivot point allows more down travel. Do this and play with spring tension and lower shock mounts to adjust the angle accordingly.
flexmonger is offline   Reply With Quote
Old 05-04-2006, 10:03 PM   #14
Newbie
 
Join Date: Nov 2005
Location: Westland
Posts: 11
Default

Driver,

Have you checked your 4 links to make sure they're all the same length? I've also found that those shocks sometimes they bind up when they're laid down like that because it puts pressure where the shock shaft goes in the housing, sort of like trying to break a toothpick in half....The other thing is you might need a stabilizer bar, hope this helps some...J.J.
JJsPrecisionGuesswork is offline   Reply With Quote
Old 05-04-2006, 10:30 PM   #15
Quarry Creeper
 
Join Date: Jun 2005
Location: NOrthern Cali
Posts: 312
Default

for savage shocks,since they are longer,they would need to be mounted more vertically.Your right,the shock angled like that is most likely to be the main cause of your problem.Try fabbing up some shock mounts that would extend out.Also,try some stiffer spring/shock oil combo.Does it lean toward one side or multiple sides?
WestCoastPJ is offline   Reply With Quote
Old 05-05-2006, 09:05 AM   #16
owner, Holmes Hobbies LLC
 
JohnRobHolmes's Avatar
 
Join Date: Nov 2004
Location: Volt up! Gear down!
Posts: 20,290
Default

do you have stuff mounted on the chassis? It sounds like you have weight up top above the roll center, causing the chassis to flop back and forth.

We need a pic of the real thing.
JohnRobHolmes is offline   Reply With Quote
Old 05-08-2006, 02:01 PM   #17
Pebble Pounder
 
Join Date: Sep 2004
Location: Brooklyn, NY
Posts: 124
Default

Quote:
Originally Posted by johnrobholmes
do you have stuff mounted on the chassis? It sounds like you have weight up top above the roll center, causing the chassis to flop back and forth.

We need a pic of the real thing.
I tried driving it with a body and without. It does the samething either way.
Ill try to get a pic of even a video asap.
What I dont understand are these trucks:
http://www.rccrawler.com/forum/tamiya-tlt-crawlers/6756-tlt-crawler-picture-archive-print.html

the shocks are mounted just as steep as mine or even steeper and they work... so whts the deal?
skrewdriver is offline   Reply With Quote
Old 05-08-2006, 02:04 PM   #18
MODERATOR™
 
EeePee's Avatar
 
Join Date: Jul 2004
Location: Ohio
Posts: 18,928
Default

Could be spring rate.
EeePee is offline   Reply With Quote
Old 05-08-2006, 02:14 PM   #19
Pebble Pounder
 
Join Date: Sep 2004
Location: Brooklyn, NY
Posts: 124
Default

Well I know that the Maxx shocks a alittle stiffer than the savage shocks. but at the same time I did add like an inch and a half of spacers to the savage shock and I still had the same result.

Yesterday I relocated the front upper shock mount so that its more verticle. I left the rear alone since its going to be quite some work to malke them verticle.
Anyway, withe the front shocks almost verticle, the truck still did the same thing.
skrewdriver is offline   Reply With Quote
Old 05-08-2006, 02:17 PM   #20
MODERATOR™
 
EeePee's Avatar
 
Join Date: Jul 2004
Location: Ohio
Posts: 18,928
Default

Quote:
Originally Posted by skrewdriver
I did add like an inch and a half of spacers to the savage shock and I still had the same result.
Because that doesn't increase the spring rate. That only preloads the spring.
EeePee is offline   Reply With Quote
Reply



Thread Tools
Display Modes

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 On



All times are GMT -6. The time now is 04:46 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
Copyright 2004-2014 RCCrawler.com