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01-23-2012, 07:03 AM | #1 |
Quarry Creeper Join Date: Nov 2011 Location: Kentucky
Posts: 478
| Fastback definitive LINK thread.
Hopefully this will make a sticky thread. First off need measured from rod end eye to rod end eye. either straight or including the bend in the link. For the 60/40 design of the FASTBACK II chassis. What length are the front links and rear links. 1. front lower with traxxis rod ends, no bend: 2. front lower with traxxis rod ends, 15* bend: 3. front lower with jato rod ends, no bend: 4. front lower with jato rod ends, 15* bend. 4 link set up for uppers 5. front upper with traxxis: 6. front upper with JATO: Rear links 7. Rear lower with traxxis rod ends, no bend: 8. Rear lower with traxxis rod ends, 15* bend: 9. Rear lower with traxxis rod ends, 30* bend: 10. Rear lower with JATO rod ends, no bend: 11. Rear lower with JATO rod ends, 15* bend: 12. Rear lower with JATO rod ends, 30* bend: Rear upper 4 link with Axial bender 4 link bracket. 13. Rear upper with traxxis rod ends: 14. Rear upper with JATO rod ends: Please fill in your measurements after the colon. hopefully this will take out some confusion on what length links to run on this chassis. |
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01-23-2012, 07:54 AM | #2 |
Rock Crawler Join Date: Aug 2010 Location: Socal
Posts: 699
| Re: Fastback definitive LINK thread.
Straight from the man. (DickyT) Read Up Underground Crawlers Fastback chassis Front lowers are 4 1/4 eye to eye, rears are 5 1/16. You can do the math for the rod ends. Everybody's uppers may be different depending on castor and link mount designs. Revo Rod end Sorry DickyT I totally copied all this out of your thread. Last edited by dstrbd1; 01-23-2012 at 08:00 AM. |
01-23-2012, 08:52 AM | #3 |
Quarry Creeper Join Date: Nov 2011 Location: Kentucky
Posts: 478
| Re: Fastback definitive LINK thread.
your right, dickyt has it in there. but i read his and several other threads from front to back and have gotten numerous listings for lengths and pretty much all of them have the same scenario. So i was just trying to simplify it in one thread with some to the point measurements. thats why i listed the options with traxxis and jato rod ends. just thought it might help someone in the future. I have seen a lot of threads asking the same questions on here too and no one gives a straight answer to that question. Maybe i should have said rod end ball to rod end ball. would that help? |
01-23-2012, 09:03 AM | #4 | |
Suck it up! Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
| Re: Fastback definitive LINK thread. Quote:
Eye to eye, all links will be the same length. They can be straight, bent, really bent, or crazy straw shaped. | |
01-23-2012, 10:13 AM | #5 | |
Rock Crawler Join Date: Jun 2011 Location: San Diego
Posts: 698
| Re: Fastback definitive LINK thread. Quote:
I can't imagine most people do the math when bending links. I don't think I could accurately achieve the specific bend I accounted for in my math. I bend em up and get the rod ends on, then I stack em on top of each other and stick really long m3 rod through the stacked eyelets. If the links are the same length the rods will be parallel. It's surprisingly sensitive, more so than me wiggling around with calipers. | |
01-23-2012, 02:10 PM | #6 |
Quarry Creeper Join Date: Dec 2010 Location: gastonia
Posts: 295
| Re: Fastback definitive LINK thread.
Or if you got a junk piece of wood and a few nails, you could measure out the desired length and nail the nails in so you have a jig. Once you get one done to whatever bend you want trace it. Then all you have to do is get it between the lines for the next X amount of links you want to build.
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01-23-2012, 08:24 PM | #7 |
Rock Crawler Join Date: Aug 2010 Location: Socal
Posts: 699
| Re: Fastback definitive LINK thread.
Once I get one link bent to the right eye to eye length I put it in the calipers measuring outside to outside of the rod ends and lock them in place. Then all I have to do is slide the next link in to see if it matches.
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03-08-2012, 12:29 AM | #8 |
Quarry Creeper Join Date: Sep 2010 Location: Perth Australia
Posts: 322
| Re: Fastback definitive LINK thread.
Just making up some upper links for my fastback II and was wondering are most of you guys running the same length as the lowers? Cheers Clint |
03-08-2012, 12:40 AM | #9 | |
Try to Bend it Join Date: Aug 2009 Location: Perth Australia
Posts: 3,163
| Re: Fastback definitive LINK thread.
Uppers will be dependent on how much you want to clock the axle and pinion angle. Hopefully DickyT or Duuuuuuuuude has some lengths in htheir builds cause they are what I would be following Quote:
Last edited by Highlucks; 03-08-2012 at 12:42 AM. | |
03-08-2012, 01:14 AM | #10 |
Quarry Creeper Join Date: Sep 2010 Location: Perth Australia
Posts: 322
| Re: Fastback definitive LINK thread. Yeah ive had a good look through there thread hey, could really find anything only lowers hey..
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03-08-2012, 07:11 AM | #11 | |
Quarry Creeper Join Date: Nov 2011 Location: Kentucky
Posts: 478
| Re: Fastback definitive LINK thread. Quote:
Usually, only after spending a week of reading dozens of threads, I have noticed most people are using 5 1/16 rear lowers and 4 1/4 lowers for the front. Also most are using 55mm for upper front and 106mm for the rear uppers. I got that from C.H.U.D. and several other threads including DICKYT's thread as well. Just search FASTBACK II in the AX10 thread and it should lead you in the right direction. | |
03-08-2012, 09:32 AM | #12 |
Suck it up! Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
| Re: Fastback definitive LINK thread.
I wouldn't get too excited about using uppers that are the same length as others you may find here, unless you're running the exact same 4 link plates front and rear. You're sometimes better off determining the length you need on your own. |
03-08-2012, 09:43 AM | #13 | |||
I wanna be Dave Join Date: Oct 2007 Location: Scumrise, Flooriduh
Posts: 5,181
| Re: Fastback definitive LINK thread. Quote:
Quote:
The fronts will never be same length, and do not need to be. The rears do not need to be either. Close is good enough. I will define close as 75%+ of lower length. Quote:
As far was what works best for the 60/40: Front lowers are 4 1/4" rod end eye center to rod end eye center, rears are 5 1/16" eye to eye. It does not matter if your bends are 5*, 15*, 30* or 360*, or what rod ends you use. The eye to eye measurement is what matters. Get to measuring Being this is specific to one chassis I do not think it is sticky material, but a great informative thread it is! Last edited by DickyT; 03-08-2012 at 09:45 AM. | |||
03-08-2012, 09:48 AM | #14 |
Suck it up! Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
| Re: Fastback definitive LINK thread. |
03-08-2012, 11:04 AM | #15 |
No idea what I'm doing Join Date: Oct 2008 Location: Underground, CO
Posts: 4,529
| Re: Fastback definitive LINK thread.
Someone should write all this up and put it up on the UGC Website. I nominate Richard. |
03-08-2012, 11:10 AM | #16 |
I wanna be Dave Join Date: Oct 2007 Location: Scumrise, Flooriduh
Posts: 5,181
| Re: Fastback definitive LINK thread. |
03-22-2012, 08:59 AM | #17 |
Quarry Creeper Join Date: Nov 2011 Location: Kentucky
Posts: 478
| Re: Fastback definitive LINK thread.
so before i place an order for vp titanium links, if i need the fronts at 4 1/4 to I take 34mm (17mm each end) (according to the pic) off the entire length of the link or do I just take 20mm (10mm each end) off the entire link length? I have a conversion websited im trying to use and vp waiting on call back. My brain isn't functioning this morning. OH and 1 other thing, does a 30* bend in link give it a late 70s muscle car stance (all jacked up in the rear) and would a 15* bend be closer to level but with clearance? |
03-22-2012, 09:01 AM | #18 |
Suck it up! Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
| Re: Fastback definitive LINK thread.
Bent links do nothing to change the stance of the rig, that is all done with the shocks.
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03-22-2012, 09:22 AM | #19 |
Quarry Creeper Join Date: Nov 2011 Location: Kentucky
Posts: 478
| Re: Fastback definitive LINK thread. cool. now how the hell do i figure in the offset bend? does it change the overall length of the link. example if I need 5 1/16 eye to eye with a offset towards one end of the link instead of in the middle does the overal link length increase to say 5 1/4 due to deduction from the bent material?
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01-22-2013, 08:28 AM | #20 | |
Quarry Creeper Join Date: Nov 2011 Location: Kentucky
Posts: 478
| Re: Fastback definitive LINK thread. Quote:
These measurements are for a 12" wheel base on the FB II chassis right? So I added a 1/4" to each measurement to get a 12 1/2" wheelbase. well I measured, measured again, measured a third time, mearsured corner to corner and each side again to quadroople check and checked each cut 3 times each before I cut. I'll be damned if my wheel base is now 13 3/8". 7/8" to freekin long. what the hell am I doing wrong. I am using the curved metal rod ends from RC4WD and they are 12.5mm from center of eye to tip. And if anyone has the measurement off the top of their head, what is the length of a jato rod end over a revo rod end? | |
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