RCCrawler Forums

mudboger07 · 01-30-2008, 11:59 AM

What is a good GC for an 18" wb crawler with clod axles?

EeePee · 01-30-2008, 12:09 PM

Top of the tire.

TwistedXT · 01-30-2008, 12:11 PM

i agree.

TwistedXT · 01-30-2008, 12:12 PM

although..it depends on what chassis you are planning to use.. so.. what type of chassis are you planning on running?

mudboger07 · 01-30-2008, 12:38 PM

A tube chassis, it sits at about 4 1/2" the way it is.

4xFord · 01-30-2008, 10:34 PM

From what little knowledge I have concerning link geometry, it seems that you would be much better off mounting the lower links to the knuckle above the axle line, which would also help your ground clearance.

And as far as COG, if you are going to mount a bigger tire than the stock clods that you have on there, and relocate the links, than I would lower it some, like 1/2" at a time and see what you think.

But very nice looking setup

mudboger07 · 01-31-2008, 06:57 AM

Thanks 4X, I guess im still thinking of a 1:1....lol, I used to getting the gc to were you dont want to drag anything, so are these designed to sort of drag the belly pan when crawling with such a low center? I read the other day of rigs as low as 3", that doesnt seem like a whole lot of GC.

32inchTSLs · 01-31-2008, 08:35 AM

i think a lot of us have wheeling experience that we bring into rc crawling, and even though many of the design principles and equations translate straight over some things will not. for example: i've never heard of a 1:1 with an extra 30% total vehicle weight added to the front wheels; a common approach to increased breakover in rc (30% was just a hip shot) and i've never seen a 1:1 stick. or 70deg on anything 1:1 on the RTI ramp.
the point is after you choose a chassis, you're probably going to spend quite a few hours tuning it based on the kind of terrain you expect to encounter mixed with your driving style. when i built my 2.2, i spent about 20 hours examining it and readjusting and cutting and replacing screws and stuff before the rock testing began. maybe that's overkill... but i've done the same with my new super (just finished last night - started in late Dec).
by the way, my super is a tube chassis with 4.25" GC at rest and 6.5" at full droop and i expect it to do really well.

build it, drive it, tune it... (and fix it) that's what this is all about, right?

mudboger07 · 01-31-2008, 10:41 AM

very true, I happy with what mine is doing at the moment but liek you said were always tuning on these things....if we didnt what would be the fun....

01-30-2008, 11:59 AM	#1
mudboger07 Rock Crawler Join Date: Jan 2008 Location: Arlington, TN Posts: 624	GC question What is a good GC for an 18" wb crawler with clod axles?

01-30-2008, 12:09 PM	#2
EeePee MODERATOR™ Join Date: Jul 2004 Location: Ohio Posts: 18,928	Top of the tire. Attached Images

01-31-2008, 08:35 AM	#8
32inchTSLs Newbie Join Date: Jan 2008 Location: under a rock Posts: 21	much of your setup will be based on preference and testing i think a lot of us have wheeling experience that we bring into rc crawling, and even though many of the design principles and equations translate straight over some things will not. for example: i've never heard of a 1:1 with an extra 30% total vehicle weight added to the front wheels; a common approach to increased breakover in rc (30% was just a hip shot) and i've never seen a 1:1 stick. or 70deg on anything 1:1 on the RTI ramp. the point is after you choose a chassis, you're probably going to spend quite a few hours tuning it based on the kind of terrain you expect to encounter mixed with your driving style. when i built my 2.2, i spent about 20 hours examining it and readjusting and cutting and replacing screws and stuff before the rock testing began. maybe that's overkill... but i've done the same with my new super (just finished last night - started in late Dec). by the way, my super is a tube chassis with 4.25" GC at rest and 6.5" at full droop and i expect it to do really well. build it, drive it, tune it... (and fix it) that's what this is all about, right?

01-30-2008, 12:11 PM	#3
TwistedXT Powered by Awesome Join Date: Sep 2004 Location: Parker, Colorado Posts: 3,622	i agree.

01-30-2008, 12:12 PM	#4
TwistedXT Powered by Awesome Join Date: Sep 2004 Location: Parker, Colorado Posts: 3,622	although..it depends on what chassis you are planning to use.. so.. what type of chassis are you planning on running?

01-30-2008, 12:38 PM	#5
mudboger07 Rock Crawler Join Date: Jan 2008 Location: Arlington, TN Posts: 624	A tube chassis, it sits at about 4 1/2" the way it is.

01-30-2008, 10:34 PM	#6
4xFord I wanna be Dave Join Date: Oct 2007 Location: Houston Posts: 3,761	From what little knowledge I have concerning link geometry, it seems that you would be much better off mounting the lower links to the knuckle above the axle line, which would also help your ground clearance. And as far as COG, if you are going to mount a bigger tire than the stock clods that you have on there, and relocate the links, than I would lower it some, like 1/2" at a time and see what you think. But very nice looking setup

01-31-2008, 06:57 AM	#7
mudboger07 Rock Crawler Join Date: Jan 2008 Location: Arlington, TN Posts: 624	Thanks 4X, I guess im still thinking of a 1:1....lol, I used to getting the gc to were you dont want to drag anything, so are these designed to sort of drag the belly pan when crawling with such a low center? I read the other day of rigs as low as 3", that doesnt seem like a whole lot of GC.

01-31-2008, 10:41 AM	#9
mudboger07 Rock Crawler Join Date: Jan 2008 Location: Arlington, TN Posts: 624	very true, I happy with what mine is doing at the moment but liek you said were always tuning on these things....if we didnt what would be the fun....

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