Top mount for rear airsprings (trailing arm) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

panhandler62 · 04-12-2010, 11:35 AM

I'm mocking things up and I see that my bags center up in the frame (and c-notch re-enforcing plate!) real well, which is more likely attributable to Nathan Porter having made the trailing arms correctly than anthing I did.. lol

What I want to check before I move on is if I need a mounting plate on top. The bags are wider than the frame section. They frame section is very heavy here (thanks to the notch plate) so I'm not worried about it buckeling but I thought I should ask y'all if it's ok to simply bolt (and plumb) them through the frame or if I should make a plate (w/wo gussets?) that covers the entire width of the bag.

SCOTI · 04-12-2010, 01:26 PM

No need for the full diameter plate. There's enough material to support the weight as is.

panhandler62 · 04-12-2010, 01:34 PM

Cool.. thanks.

Guess I need to doing some drilling and reaming and then get to cleaning up the third member. (It needs new seals and I'm going to take the opportunity to replace the shoes while it's out of the truck and easy to get to since that is such a pita with the HO52 rear end.

04-12-2010, 11:35 AM	#1
panhandler62 Java Mechanic Join Date: Jun 2005 Location: Martinsburg, WV Posts: 6,763	Top mount for rear airsprings (trailing arm) I'm mocking things up and I see that my bags center up in the frame (and c-notch re-enforcing plate!) real well, which is more likely attributable to Nathan Porter having made the trailing arms correctly than anthing I did.. lol What I want to check before I move on is if I need a mounting plate on top. The bags are wider than the frame section. They frame section is very heavy here (thanks to the notch plate) so I'm not worried about it buckeling but I thought I should ask y'all if it's ok to simply bolt (and plumb) them through the frame or if I should make a plate (w/wo gussets?) that covers the entire width of the bag. Attached Images __________________ Keith 11 Lincoln MKT -- Momma's wagon 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 .... Last edited by panhandler62; 04-12-2010 at 11:35 AM.

04-12-2010, 01:26 PM	#2
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,071	Re: Top mount for rear airsprings (trailing arm) No need for the full diameter plate. There's enough material to support the weight as is. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

04-12-2010, 01:34 PM	#3
panhandler62 Java Mechanic Join Date: Jun 2005 Location: Martinsburg, WV Posts: 6,763	Re: Top mount for rear airsprings (trailing arm) Cool.. thanks. Guess I need to doing some drilling and reaming and then get to cleaning up the third member. (It needs new seals and I'm going to take the opportunity to replace the shoes while it's out of the truck and easy to get to since that is such a pita with the HO52 rear end. __________________ Keith 11 Lincoln MKT -- Momma's wagon 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 ....



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