The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board > 67-72 Chevrolet & GMC Pickups Projects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-17-2015, 01:01 PM   #426
robnolimit
Senior Member
 
robnolimit's Avatar
 
Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
Re: No Limit '72 C-10

I drive it almost every day. It now has 36,000 miles on it since the new speedo went in. There have been very few changes or updates. That may all change soon, as we are thinking about putting a new chassis under it, to do a full on comparison. I'll keep you posted.
__________________
GoodGuys 2012 Pro-Truck Champion
2012 Truckin' Throwdown Champion
GoodGuys 2011 National Champion
2011 Truckin' Throwdown Champion
GoodGuys 2010 National Champion

Proud to put our products up against all others!
robnolimit is offline   Reply With Quote
Old 08-18-2015, 11:43 AM   #427
KSWes
Registered User
 
KSWes's Avatar
 
Join Date: Dec 2011
Location: Ottawa, KS
Posts: 337
Re: No Limit '72 C-10

Quote:
Originally Posted by robnolimit View Post
I drive it almost every day. It now has 36,000 miles on it since the new speedo went in. There have been very few changes or updates. That may all change soon, as we are thinking about putting a new chassis under it, to do a full on comparison. I'll keep you posted.
36K that's awesome! All Those So. Cal Freeway Miles add up eh! I'll be tuned in for the results if you swap out the chassis.
__________________
70 Chevy C10 LWB

My Build:http://67-72chevytrucks.com/vboard/s...d.php?t=513002
KSWes is offline   Reply With Quote
Old 08-18-2015, 11:47 AM   #428
KSWes
Registered User
 
KSWes's Avatar
 
Join Date: Dec 2011
Location: Ottawa, KS
Posts: 337
Re: No Limit '72 C-10

Crap just noticed you're in TN now Rob. Not sure how I missed that.
__________________
70 Chevy C10 LWB

My Build:http://67-72chevytrucks.com/vboard/s...d.php?t=513002
KSWes is offline   Reply With Quote
Old 08-18-2015, 12:32 PM   #429
Justin@EntropyRad
Registered User
 
Justin@EntropyRad's Avatar
 
Join Date: Jan 2015
Location: Charlotte, NC
Posts: 483
Re: No Limit '72 C-10

Freeway miles are the same...but that truck gets around! Testament to its durability!
__________________
* Call me NOT the website number*
Justin Novick
(773) 303-8251
Sales/Support
Entropy Radiator / Engineered Cooling Products
"The Sexiest Radiators For The Sexiest Hot Rods" - www.EntropyRad.com www.speedcooling.com
Justin@EntropyRad is offline   Reply With Quote
Old 08-18-2015, 12:50 PM   #430
KSWes
Registered User
 
KSWes's Avatar
 
Join Date: Dec 2011
Location: Ottawa, KS
Posts: 337
Re: No Limit '72 C-10

Quote:
Originally Posted by Justin@EntropyRad View Post
Freeway miles are the same...but that truck gets around! Testament to its durability!
Truth!
__________________
70 Chevy C10 LWB

My Build:http://67-72chevytrucks.com/vboard/s...d.php?t=513002
KSWes is offline   Reply With Quote
Old 08-20-2015, 12:02 AM   #431
ajgriffin
Registered User
 
ajgriffin's Avatar
 
Join Date: Feb 2008
Location: Carson, CA
Posts: 581
Re: No Limit '72 C-10

Quote:
Originally Posted by Justin@EntropyRad View Post
Freeway miles are the same...but that truck gets around! Testament to its durability!
Me and Interstate 405 have to respectfully disagree...

Isn't Rob in TN now though?
__________________
69 C10 SWB -- Left to me by a loving father. Finishing the build we never got the chance to do together
ajgriffin is offline   Reply With Quote
Old 08-20-2015, 09:52 AM   #432
Justin@EntropyRad
Registered User
 
Justin@EntropyRad's Avatar
 
Join Date: Jan 2015
Location: Charlotte, NC
Posts: 483
Re: No Limit '72 C-10

Sure..pull the cali excuse

Gotta give up something for pretty girls, nice beaches, and legal pot
__________________
* Call me NOT the website number*
Justin Novick
(773) 303-8251
Sales/Support
Entropy Radiator / Engineered Cooling Products
"The Sexiest Radiators For The Sexiest Hot Rods" - www.EntropyRad.com www.speedcooling.com
Justin@EntropyRad is offline   Reply With Quote
Old 08-23-2015, 04:26 PM   #433
SierraMtns
Registered User
 
SierraMtns's Avatar
 
Join Date: Jun 2014
Location: Shingle Springs, CA
Posts: 869
Re: No Limit '72 C-10

Cool build Rob. Thanks for sharing.
SierraMtns is offline   Reply With Quote
Old 02-23-2016, 01:57 PM   #434
crakarjax
Registered User
 
crakarjax's Avatar
 
Join Date: Dec 2009
Location: Kirkland, WA
Posts: 1,302
Re: No Limit '72 C-10

Quote:
Originally Posted by lolife99 View Post
Rob,... don't you think a spring with 2" more drop will change the angle of the shock?
I picture it being "layed down" at a more horizontal angle,... unless the upper shock mount is moved forward.
Maybe it's not enoungh to matter.
Your thoughts?
Good question. I'm wondering if it's best to mount the shock locator in a location that sets the shock at X degrees at whatever ride height the truck ends up at, but that's going to be different for everyone's truck. The location was probably chosen due to the big bolt hole being there?
__________________
1968 LWB C20 / AC / Wood Bed
crakarjax is offline   Reply With Quote
Old 02-24-2016, 10:18 AM   #435
robnolimit
Senior Member
 
robnolimit's Avatar
 
Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
Re: No Limit '72 C-10

OK, so , I didn't look back to see the comments around this quote, but yes. The more you drop the truck with springs (rear) or bags, the more the shock will lean over. Also, the shorter the shock, the worse it's performance levels (in general). that's why we set our relocation mounts behind the axle and outboard. There are plenty of charts that show the reduction in dampening force per degree, but as a rule, 20* angle loose about 13% dampening. Factor this in, with the leverage concept. The farther back the shock is on the trailing arm, the more leverage it has, and the less force it needs. So, a shock in front of the axle has less leverage, and needs more dampening force to do the same job as a shock behind the axle, that has more leverage and needs less dampening force. With this knowledge in hand, looking at a shock behind the axle, leaning at 20* or 25* makes a lot of sense.
__________________
GoodGuys 2012 Pro-Truck Champion
2012 Truckin' Throwdown Champion
GoodGuys 2011 National Champion
2011 Truckin' Throwdown Champion
GoodGuys 2010 National Champion

Proud to put our products up against all others!
robnolimit is offline   Reply With Quote
Old 02-24-2016, 01:54 PM   #436
crakarjax
Registered User
 
crakarjax's Avatar
 
Join Date: Dec 2009
Location: Kirkland, WA
Posts: 1,302
Re: No Limit '72 C-10

Quote:
Originally Posted by robnolimit View Post
OK, so , I didn't look back to see the comments around this quote, but yes. The more you drop the truck with springs (rear) or bags, the more the shock will lean over. Also, the shorter the shock, the worse it's performance levels (in general). that's why we set our relocation mounts behind the axle and outboard. There are plenty of charts that show the reduction in dampening force per degree, but as a rule, 20* angle loose about 13% dampening. Factor this in, with the leverage concept. The farther back the shock is on the trailing arm, the more leverage it has, and the less force it needs. So, a shock in front of the axle has less leverage, and needs more dampening force to do the same job as a shock behind the axle, that has more leverage and needs less dampening force. With this knowledge in hand, looking at a shock behind the axle, leaning at 20* or 25* makes a lot of sense.
Ok, so keeping that in mind, this is a balancing act between two things:

- Having a more vertical angle which will result in less of a change in shock angle throughout the travel of the suspension, and thus less of a change in the dampening effect of the shock.
- Maintaining adequate stroke (longer shock, better performance)

At the same time, since the shock is located behind the axle with more leverage, less dampening is needed and therefore a shorter shock isn't necessarily a bad thing even though it would have poorer performance. Considering this, is a more vertically mounted shock acceptable in this configuration at the expense of some shock travel?

I've made an assumption here:
- An even dampening effect is desired throughout the entire suspension travel

If that's not the case, then an angled shock would be preferable *if* you want dampening to lessen as your suspension nears full compression. In addition, you could get creative by adjusting the shock angle to tune the dynamic dampening rate throughout your suspension travel.

I'm new to thinking about shocks, but hopefully the above makes some sense. Please do correct me! I'm planning to mount my shocks through the side of my frame rail, so I can really put them wherever I want, I just don't know where I want them yet
__________________
1968 LWB C20 / AC / Wood Bed
crakarjax is offline   Reply With Quote
Old 03-09-2016, 04:42 PM   #437
XGreen
Registered User
 
Join Date: Feb 2016
Location: Royal Oak, MI
Posts: 26
Re: No Limit '72 C-10

Quote:
Originally Posted by robnolimit View Post
It's update time.Now we have a bent frame, and we can straighten it, but we found a pretty good (not perfect) bare frame for $300.00. Since we have a new cab, this seemed like a good move, as we can do more prep work, and still drive and test parts on the JT. We did some basic boxing, and welded in the front crossmember, and all frame crossmembers. The stock rear shock crossmember was bent, so we replaced it with a 1 1/2" tube, - we'll be using our new rear shoch mounts so we don't need them on the crossmember.
Rob,
I know this particular post is very old but I am just trying to better understand your boxing and frame strengthening strategy. I tried marking up the pic of your frame (orange=braces, yellow=boxing). from what I can see you boxed from the front cross member along the angle to the straight. Then behind the trailing arm cross member at an angle outboard then back inboard at a sharper angle and over the rear axle.

Please correct my assessment if you would please. And if you can just explain your strategy any further that would be greatly appreciated.
Attached Images
 
XGreen is offline   Reply With Quote
Old 05-16-2016, 02:21 PM   #438
empi1776
Registered User
 
Join Date: Jan 2008
Location: Dallas TX
Posts: 69
Re: No Limit '72 C-10

Quote:
Originally Posted by KSWes View Post
"Secret Mod on page 9 I can only say thank you Rob!" With help from a buddy who can lay down some quality welds we accomplished the secret mod on my lower control arms over the weekend (70 C10 LWB) and my goodness what an improvement! It holds the road as good as our newer cars. And it does work on 15" rims with stock spindles and stock steel rallies, and stock ride height. Took your recommended specs to the alignment shop and they got me pretty close. Could have driven it home with one finger if I had wanted to.









Thanks again Rob!

Truly one of the coolest things I've done to the truck and relatively simple and it feels much safer to drive at highway speeds. I only attempted this with the help of a friend who can weld good enough so I know me and my family are safe riding around on those welds. I can't wait for the weather to improve to get it out on the road a lot more.
Does this mod work with drop spindles?
empi1776 is offline   Reply With Quote
Old 05-16-2016, 03:08 PM   #439
crakarjax
Registered User
 
crakarjax's Avatar
 
Join Date: Dec 2009
Location: Kirkland, WA
Posts: 1,302
Re: No Limit '72 C-10

Quote:
Originally Posted by empi1776 View Post
Does this mod work with drop spindles?
Yes
__________________
1968 LWB C20 / AC / Wood Bed
crakarjax is offline   Reply With Quote
Old 05-16-2016, 03:24 PM   #440
empi1776
Registered User
 
Join Date: Jan 2008
Location: Dallas TX
Posts: 69
Re: No Limit '72 C-10

Quote:
Originally Posted by crakarjax View Post
Yes
So it will work with
1. 2 1/2 drop spindles
2. 15 inch rally wheels
3. Disc brakes
ty
danny
empi1776 is offline   Reply With Quote
Old 05-16-2016, 03:51 PM   #441
robnolimit
Senior Member
 
robnolimit's Avatar
 
Join Date: Jul 2010
Location: Dandridge, Tn. USA
Posts: 2,226
Re: No Limit '72 C-10

Quote:
Originally Posted by XGreen View Post
Rob,
I know this particular post is very old but I am just trying to better understand your boxing and frame strengthening strategy. I tried marking up the pic of your frame (orange=braces, yellow=boxing). from what I can see you boxed from the front cross member along the angle to the straight. Then behind the trailing arm cross member at an angle outboard then back inboard at a sharper angle and over the rear axle.

Please correct my assessment if you would please. And if you can just explain your strategy any further that would be greatly appreciated.
must have missed this post. sorry. This was pretty basic and quick, we just tried to stiffen up the high stress areas. Most of the orange diagonal bracing was 1 1/4" x .120 wall tube. We could have done more, but we were trying to keep it simple. TIP: Triangles are a lot stronger than squares. running tubular bracing in big X's or making big triangle will pay off the best.
__________________
GoodGuys 2012 Pro-Truck Champion
2012 Truckin' Throwdown Champion
GoodGuys 2011 National Champion
2011 Truckin' Throwdown Champion
GoodGuys 2010 National Champion

Proud to put our products up against all others!
robnolimit is offline   Reply With Quote
Old 05-17-2016, 11:00 PM   #442
XGreen
Registered User
 
Join Date: Feb 2016
Location: Royal Oak, MI
Posts: 26
Re: No Limit '72 C-10

Quote:
Originally Posted by robnolimit View Post
must have missed this post. sorry. This was pretty basic and quick, we just tried to stiffen up the high stress areas. Most of the orange diagonal bracing was 1 1/4" x .120 wall tube. We could have done more, but we were trying to keep it simple. TIP: Triangles are a lot stronger than squares. running tubular bracing in big X's or making big triangle will pay off the best.
Thanks for the reply Rob. Where would you say the "high stress areas" are.

Here is what I came up with. It defiantly stiffened up the frame. No more flexing when you pick up a corner. I still have work to do in the front though.
Attached Images
  
XGreen is offline   Reply With Quote
Old 03-15-2018, 01:11 AM   #443
SierraMtns
Registered User
 
SierraMtns's Avatar
 
Join Date: Jun 2014
Location: Shingle Springs, CA
Posts: 869
Re: No Limit '72 C-10

Looks good Xgreen. I am working on my frame and bracing.
SierraMtns is offline   Reply With Quote
Old 10-22-2018, 08:45 PM   #444
PMDc
Registered User
 
PMDc's Avatar
 
Join Date: Jul 2017
Location: Auburn, IN
Posts: 6
Re: No Limit '72 C-10

Rob,

I came across this thread after seeing JT on your website and wanting more info. Thank you again for sharing everything here.

I do have a question regarding the rear frame kick-up. Is there more information how you accomplished this posted somewhere?

Thanks!
PMDc is offline   Reply With Quote
Old 05-07-2019, 11:46 AM   #445
Deathwish
Registered User
 
Join Date: May 2019
Location: Daphne, Al
Posts: 8
Re: No Limit '72 C-10

I read the Hellboy thread, and this thread from beginning to end along with the Make it Handle thread from beginning to end, and really appreciate all the time invested in providing information on each build and progress notes.

I am looking at duplicating most of this build in a 68 LWB truck, as it is perfect for what I need and how I drive.

Thanks Rob for all the info you provided in this thread! It has been an education to say the least.
Deathwish is offline   Reply With Quote
Reply

Bookmarks

Tags
1972 chevy, c-10, no limit engineering


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

Forum Jump


All times are GMT -4. The time now is 03:57 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com