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80's short box, "S.E.R.E." Box permanently attached to the cab.

Overview Gallery Discussion
This is so damn cool, Kert.:waytogo:

The parts that you are making puts the rest of us and are fab attempts to shame. Very nice work. :waytogo:
 
cab vibration???:D

any thoughts to insulation/sound deadener at this point?

Perhaps a double layer firewall?
 
NorCal69 said:
This is so damn cool, Kert.:waytogo:

The parts that you are making puts the rest of us and are fab attempts to shame. Very nice work. :waytogo:
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Thanks bud! I don't know if i'd go that far though.

76zimmer said:
cab vibration???:D

any thoughts to insulation/sound deadener at this point?

Perhaps a double layer firewall?
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Yeah, been putting alot of thought into all of it. It'd be pretty easy to double up the firewall. Kill two birds with that stone as well. Rather than smoothing the existing firewall, just sorta bury it behind the "extra" layer, with a gap and some vibration absorbing material.

Also looking at the floor boards pretty hard. How about dyna matt under a rubber floor mat under the carpet? Seem like layerin' up would dampen the vibration pretty good and keep things quiet.
 
Well, obviously I got some wheels to put together so that's where some energy will be directed in the immediate future.

Hopefully by the time those are done and on the axles, i'll have some cab mounts in hand and can start finalizing the cab mounting and see how the front clip is gona pan out. Core support mounts will be interesting.

After that its and engine and trans install.

Pushing in this direction so I can get all the cross members in. The frame is really square right now and i don't want to jeopradize that by not having as many cross members in as I can.
 
i was thinking more sound deadening as opposed to vibration absorption!
 
76zimmer said:
i was thinking more sound deadening as opposed to vibration absorption!
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I'll be looking at all of it. I always felt that a lot of the noise in our trucks came from the single panel areas vibrating and causing a "drone" sound inside the cab. I could be wrong. Not like I have any real data to back it up. I just know I want this truck to be comfortable and quiet.
 
cybrfire said:
I'll be looking at all of it. I always felt that a lot of the noise in our trucks came from the single panel areas vibrating and causing a "drone" sound inside the cab. I could be wrong. Not like I have any real data to back it up. I just know I want this truck to be comfortable and quiet.
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Your only gonna get it so quiet. Alot of the noise in our trucks is wind noise. Which you can do very little about. Cant put thicker glass in there and can't flush mount the windows.

I would use several different products Kert. Spray on stuff for the doors and I would try to get some of the spray on stuff to the first layer on the roof too. Everywhere else would be damper and insulator. Should make it nicer than just about any truck out there.

Are you gonna use the vintage air hvac stuff. Give you a super clean firewall
 
blazinzuk said:
Your only gonna get it so quiet. Alot of the noise in our trucks is wind noise. Which you can do very little about. Cant put thicker glass in there and can't flush mount the windows.

I would use several different products Kert. Spray on stuff for the doors and I would try to get some of the spray on stuff to the first layer on the roof too. Everywhere else would be damper and insulator. Should make it nicer than just about any truck out there.

Are you gonna use the vintage air hvac stuff. Give you a super clean firewall
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That looks to be a nice setup
Its what Im going with in BART
 
blazinzuk said:
Your only gonna get it so quiet. Alot of the noise in our trucks is wind noise. Which you can do very little about. Cant put thicker glass in there and can't flush mount the windows.

I would use several different products Kert. Spray on stuff for the doors and I would try to get some of the spray on stuff to the first layer on the roof too. Everywhere else would be damper and insulator. Should make it nicer than just about any truck out there.

Are you gonna use the vintage air hvac stuff. Give you a super clean firewall
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Exactly what he said.

I have completely lined the firewall to the back wall with dynamat and a foam sound deadener. Then insulated carpet on top. With the windows up I can actually have a conversation with someone but its definitely still loud.
 
When I do my 78 I'm going to do spray on deadener on the bottom outside of the cab and dynomat on the inside and on every square inch I can reach. From my research one of the best items for sound deadening is the mass loaded vinyl if I remember the name right. It's just thick vinyl mat.
 
Yep, gona do the vintage air unit. Been talkin' with the guys at vintage air about it already. Spendy but looks like a damn nice unit.

Big block singin' is all together different from a cummins rattle.
 
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Takes about 20 minutes per wheel.
 
cybrfire said:
Got a small crossmember above the rear axle. That particular crossmember is where air transfers from one frame rail to the other. It's the highest point on the frame and about as far away from the pump as can be. Nice little side benefit will be drawing air for the rear air locker from right there.
.
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Are you using your frame rails as air tanks..... think i missed that part... Not sure if you've ever personally used rectangle tubing for compressed air, but I have and its not pretty. it will balloon and crack at welds, like body mounts and such.. its not easy to notice when first filled but its there and can end badly if stressed....
Plus anything that puts a load on the side of the frame (springmounts, etc) now have and inner force amplifying the force on the spots where they mount too..
just a thought and reminder.

when I was the lead tech in the fab shop i used to work in (Gottmetal) we used 2x6x.25 for the main runners and spot air tank of a plastic roll stand with air slitters we were building... when we first put 80psi in the tubes they swelled in the center almost an inch... when we seen it and bled it off there were already cracks in the tube alongside some of the welds... not sure what would have happend if it had ruptured.. but I'm sure glad it didnt..
 
frames looking awesome by the way...:waytogo: Wont be a much stronger one out there
 
blazinzuk said:
Astor van box the pitman arm swings in front of the box. Pitman arm goes toward the front of the rig. So it can be used to push an axle way forward

Very cool man
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In my conversations with HOWE I learned that any steering box can be converted from regular steer to front steer.... If you have a box you like (and are willing to let someone else mess with it) you can convert it.

-G
 
Pressurized the frame today and had it up to 110psi and the sides of the 6" rect. tube just started to bulge out just a bit.

I'll have to decide how badly I want to make the frame an air tank. There is some things that could be done to prevent that. Just don't know how important it is.
 
Personally for as cheap as an airtank can be bought for, I wouldn't use the frame as a tank. Second reason is since the steel is uncoated inside the frame it will start to rust from the extra moisture of the compressed air.

Vintage air makes some really nice stuff, expensive, but nice.
 
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