RCCrawler Forums

AK-Maxx · 03-08-2010, 01:53 PM

Has anyone replaced the stock upper links with longer ones like in the article here? http://www.rccrawler.com/axialcompbuild.html

I've searched but found nothing. How does this work? In the article they use 70mm links for the uppers, but they are also using a 3-link, how long of a link do I need if I'm running a 4-link? It looks like they could have used longer than a 70mm link since they had to use a spacer on the 3-link connector.

Duuuuuuuude · 03-08-2010, 02:00 PM

Measure from where the link attaches to the chassis to where it attaches to the axle. Subract the lenths of the rod ends (from center of the eye to the end) and that is your link lenth.

BOLT · 03-08-2010, 04:23 PM

I have done this on my Axial with VP chassi. My rear uppers are 113mm including rod ends and front rod ends on upper rears are mounted very low in the chassi. 4-linked of course..
Works great for me..

Terranaut · 03-09-2010, 08:25 AM

Make sure you allow for a little adjustment, the upper link length affects pinion angle. Too low (or too high) on the pinion can cause problems. And check that through the full range of axle vertical travel to make sure it stays within reason.

I removed one of the link ends and replaced the threaded part with longer lengths of 3mm all thread, with a plain nut on there, and screwed them back in. Now I can just loosen the nut and turn them to adjust the length, lock the position with the plain nut. So easy.

Cheers.

03-08-2010, 01:53 PM	#1
AK-Maxx Newbie Join Date: Oct 2009 Location: Anchorage Posts: 36	Longer upper links Has anyone replaced the stock upper links with longer ones like in the article here? http://www.rccrawler.com/axialcompbuild.html I've searched but found nothing. How does this work? In the article they use 70mm links for the uppers, but they are also using a 3-link, how long of a link do I need if I'm running a 4-link? It looks like they could have used longer than a 70mm link since they had to use a spacer on the 3-link connector.

03-08-2010, 02:00 PM	#2
Duuuuuuuude Suck it up! Join Date: Mar 2008 Location: Arkansas Posts: 11,652	Measure from where the link attaches to the chassis to where it attaches to the axle. Subract the lenths of the rod ends (from center of the eye to the end) and that is your link lenth.

03-08-2010, 04:23 PM	#3
BOLT Pebble Pounder Join Date: Aug 2009 Location: Norway Posts: 102	I have done this on my Axial with VP chassi. My rear uppers are 113mm including rod ends and front rod ends on upper rears are mounted very low in the chassi. 4-linked of course.. Works great for me..

03-09-2010, 08:25 AM	#4
Terranaut Quarry Creeper Join Date: Sep 2008 Location: Kuala Lumpur, Malaysia Posts: 372	Make sure you allow for a little adjustment, the upper link length affects pinion angle. Too low (or too high) on the pinion can cause problems. And check that through the full range of axle vertical travel to make sure it stays within reason. I removed one of the link ends and replaced the threaded part with longer lengths of 3mm all thread, with a plain nut on there, and screwed them back in. Now I can just loosen the nut and turn them to adjust the length, lock the position with the plain nut. So easy. Cheers.

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