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Crawlers shock lenght question

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Crawlers shock lenght question

Post by babyboy on Tue 28 Aug 2012 - 12:05

Looking for crawlers shocks and found that it comes in many lenght. I'm doing a custom truck so here's the question.

The lenght is for height clearance from the ground? More movement? Becos of chassis? A bit confuse to choose. I want to have the movement like ths SCX10 or more when the wheel goes over obstacle. So does a longer lenght gives me more scale movement or what? Or there's ored a certain movement (up down) set within the shock? Sorry for the very confusing question. Hope can understand what I'm trying to ask. Embarassed Newbie mah.
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Re: Crawlers shock lenght question

Post by wyetuck88 on Tue 28 Aug 2012 - 13:26

I find that Clearance depends very much on tyre size, shocks are more for articulation, length of shock is measured from your axle mounting point to your chassis mounting point. Longer shocks=more articulation bigger size tyres=more ground clearance. If you got longer shocks and larger tyres, your rig's centre of gravity will be higher=rig falls on its side more easily, unless u have weighted wheels and positive offset wheels.
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Re: Crawlers shock lenght question

Post by boolean21 on Tue 28 Aug 2012 - 15:01

babyboy wrote:Looking for crawlers shocks and found that it comes in many lenght. I'm doing a custom truck so here's the question.

The lenght is for height clearance from the ground? More movement? Becos of chassis? A bit confuse to choose. I want to have the movement like ths SCX10 or more when the wheel goes over obstacle. So does a longer lenght gives me more scale movement or what? Or there's ored a certain movement (up down) set within the shock? Sorry for the very confusing question. Hope can understand what I'm trying to ask. Embarassed Newbie mah.

the shock length refers to the eye to eye length, for the travel, you can check the specs to see for e.g. shock A - 65mm to 90mm, 65mm will be the compressed length (eye to eye) and 90mm extended...
you can play with this length by adding spacers outside or inside the shock, depending on how much travel you want, etc...

to determine the shock length, you can mock it up physically to measure, or like what i do, draw it out and roughly determine the length then play with the top mounting position, can drill a few holes for the top mounting position so that you adjust the position easily...

generally, longer shocks have longer travel due to the long shaft, you can play with the length by adding spacers to limit the up travel or down travel...
but for your scale truck build, i don't think you want to go for a lot of travel in the shocks right? Smile

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Re: Crawlers shock lenght question

Post by babyboy on Tue 28 Aug 2012 - 15:59

wyetuck88 wrote:I find that Clearance depends very much on tyre size, shocks are more for articulation, length of shock is measured from your axle mounting point to your chassis mounting point. Longer shocks=more articulation bigger size tyres=more ground clearance. If you got longer shocks and larger tyres, your rig's centre of gravity will be higher=rig falls on its side more easily, unless u have weighted wheels and positive offset wheels.

OK, than my clearance should be standard if base on wheel size.
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Re: Crawlers shock lenght question

Post by babyboy on Tue 28 Aug 2012 - 16:08

boolean21 wrote:
babyboy wrote:Looking for crawlers shocks and found that it comes in many lenght. I'm doing a custom truck so here's the question.

The lenght is for height clearance from the ground? More movement? Becos of chassis? A bit confuse to choose. I want to have the movement like ths SCX10 or more when the wheel goes over obstacle. So does a longer lenght gives me more scale movement or what? Or there's ored a certain movement (up down) set within the shock? Sorry for the very confusing question. Hope can understand what I'm trying to ask. Embarassed Newbie mah.

the shock length refers to the eye to eye length, for the travel, you can check the specs to see for e.g. shock A - 65mm to 90mm, 65mm will be the compressed length (eye to eye) and 90mm extended...
you can play with this length by adding spacers outside or inside the shock, depending on how much travel you want, etc...

to determine the shock length, you can mock it up physically to measure, or like what i do, draw it out and roughly determine the length then play with the top mounting position, can drill a few holes for the top mounting position so that you adjust the position easily...

generally, longer shocks have longer travel due to the long shaft, you can play with the length by adding spacers to limit the up travel or down travel...
but for your scale truck build, i don't think you want to go for a lot of travel in the shocks right? Smile

OK. My truck is higher than the dingo. My wheel will try to stay at 1.9 for scale look. Will measure the drawing.

I dun build scale truck. I can only build look like only. Not scale Embarassed . Still learning from you guys.
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