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Old 05-08-2012, 12:48 AM   #11
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Re: 1935 Chevy school bus

Tango, I did look into the 6 spd tranny that aisin offered with the NPR but decided against it because it has a lock up in second gear and then in sixth gear. The local Isuzu tecs said they had many complaints about the second gear converter lock up making the truck hunt and peck its way through its gears. with that I decided to stick with the 4 spd auto and yes it is run by a TCM like the newer ones.

Thanks for the info on the Allison 6 spd, I'll check it out.
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Old 05-08-2012, 10:32 AM   #12
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Re: 1935 Chevy school bus

My pleasure. The owner reviews and comments from folks who had done transplants are what convinced me (that, plus I'm a big fan of Allisons).

And...BTW...when do we get to see pix of the '35 body that's going on that very cool custom chassis???
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Old 05-10-2012, 10:06 PM   #13
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Re: 1935 Chevy school bus

I hope I am not double posting but the first try didn't show up.

Tomorrow will be a big day. I'll be putting the bus body on the new frame for its final fitting. I finished installing the outriggers in their new positions to allow for various under bus tanks and I installed 2" of rigid foil backed foam in the area between the frame rails. The insulation is supposed to be R-8. I'd like to put more above the floor but as I am 6'1" I have no room to spare. I used old school rubber cove moulding between the frame and the body to prevent the squeeks of a direct connection.

I'll post pics as soon as I recover from the day's festivities!
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Old 05-11-2012, 12:47 AM   #14
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Re: 1935 Chevy school bus

Looking at the second to last picture showing your steering box and drag ling I am very concerned.
It may be due to the angle of the camera and it looks like when the suspension is compressed the drag link it going to hit and break something upon contact with the bottom of the steering box.
Another point is the drag link going over the steering knuckle arm - you can see it very close. Again when the wheel is turned and everything in where the drag link is above the steering knuckle arm and the suspension is again compressed; they will contact each other and break the drag link then you will lose all steering control.
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Old 05-11-2012, 10:51 AM   #15
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Re: 1935 Chevy school bus

i imagine it has been tested to see if everything works ok.
i prob would have done it just a tad different so i could make a straight drag link, but that's just me.
like for one making my own steering arm.


i am very glad that the work on the chassis is shown in this post. It will let others know that it isnt a big deal, and that most people can do it if they put their mind to it.
thanks.
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Old 05-11-2012, 12:12 PM   #16
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Re: 1935 Chevy school bus

Thanks for the concern and yes the turning radius will be longer with the lengthened frame but since the whole bus is only 22" long it isn't much of a problem--its the same as it has been for the last 77 years of service.

I compressed the front axle to the upper stops and moved the system through its complete range of motion to be sure nothing hit--nothing hits. Yes the parts are close but no closer than they were in the original configuration. I looked at the pic and it does make it look like there would be a clearance problem.

'49, I considered a straight drag link but it would severly limit turning radius. The "S" shape of the drag link allows the wheel clearance for a tight turn and is the actual original drag link for the truck so I'm guessing that it is a better design than anything I'd come up with.

Thanks again for the concern. Its the sort of thing that we all need to do for each other.
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Old 05-11-2012, 02:31 PM   #17
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Re: 1935 Chevy school bus

you would have to modify the spindle end as well.. that is how i have done it, but it is steering components so they gotta be done right to maintain structural strength.
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Old 05-11-2012, 04:33 PM   #18
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Re: 1935 Chevy school bus

Hyjack!

I caught grief years ago when I used a wire EDM to cut the splines out of a stock pitman arm (cut them out as a hex around the splines) and then cut a matching hex in the steel bar stock,pressed the two together and then Tig'd around top and bottom...I heard "OMG..your going to kill someone!!!...yeah whatever..

Un Hyjack!

Keep rolling..oh... and hurry up and mount the body,I wanna see pictures
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Old 05-11-2012, 11:03 PM   #19
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Re: 1935 Chevy school bus

I ain't a kid any more. My regular shift
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Old 05-19-2012, 02:37 PM   #20
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Re: 1935 Chevy school bus

No new “devils in the details” to report—yet. I got the bus
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