Simpson Jumbo Tractor list

CraigR · Nov 28, 2015

I am starting to update our Simpson Jumbo Tractor and Owners list. These tractor's brass tag says Jumbo Steel Products, Azusa, CA. and made around 1948. Most of the tractor serial numbers and owners list we have, is from the 1990's. We have a list of app. 35 tractors. My family started collecting Simpson Jumbo's in 1976. If you can Help, Please reply.(photo, serial#, owner, ect.) This photo is one of ours purchased 1987. Thank You..CraigR

CraigR · Nov 28, 2015

CraigR · Nov 29, 2015

(quoted from post at 11:41:48 11/28/15) I am starting to update our Simpson Jumbo Tractor and Owners list. These tractor's brass tag says Jumbo Steel Products, Azusa, CA. and made around 1948. Most of the tractor serial numbers and owners list we have, is from the 1990's. We have a list of app. 35 tractors. My family started collecting Simpson Jumbo's in 1976. If you can Help, Please reply.(photo, serial#, owner, ect.) Phone or text: 816-803-6432.This photo is one of ours purchased 1987. Thank You..CraigR

GENE DERRINGER · Nov 30, 2015

Craig: You have a very good looking tractor. It seems to be very similar to the Custom tractors that were made in Indiana. Does it have the 6 cyl Chrysler engine? How about a "torq converter/fluid drive"? Thanks for any information you can provide.

CraigR · Nov 30, 2015

Thank you. Their are some Simpson Jumbo tractors out there with a lot of Custom mfg. parts on them. Their is great information about Simpson & Jumbo Steel Products in the Antique Power Mag. dated May/June 1992, it states the Azusa, CA plant borrowed the tractor design from Custom Tractor built in Shelbyville, IN. Only a few changes were made to the original Custom design. As far as I know, All Simpson Jumbo tractors have the channel iron frame, no factory torq converter or fluid drive, and all but one used the 6 cyl. Chrysler engine. This one (serial #7377) has an 8 cyl., a longer channel iron frame, and it is doubled framed. CraigR

GENE DERRINGER · Dec 2, 2015

Thanks Craig for the information. It was good to talk with you.

Nitropolitan · Sep 17, 2023

hi Craig, sorry to dig up an old thread, but the last time I got to have fun with the old Simpson I ran for many years as a kid was well before the internet was readily accessible. I went back to the show grounds for this last weekend in Nee Rockford, ND, and (maybe 20 years later?) the fella working the gate at 9pm recognized my name and said "your tractor is over there, your camper is over there, and I hope you are ready to be busy!"
I may have paraphrased that, but they threw me right back into the mix, and I loved it.
I will try to figure out how to attach some pictures, the tractor was owned by Norman Pross, now in the Mark Peterson collection.[/img:f5eeb3064f]

Nitropolitan · Sep 20, 2023

I don t even know where to look for the tractor serial number, but took one of the engine plate because she needs some love and I need to pick up som parts.

CraigR · Oct 31, 2023

(quoted from post at 18:22:26 09/20/23)

I don t even know where to look for the tractor serial number, but took one of the engine plate because she needs some love and I need to pick up som parts.

Thank you Nitropolitan for the pictures and all of the information. I think I have the serial number for this Simpson. It is #11__8. I tried to enlarge you picture, it s the brass tag on the frame, under the post with the hood latch on it. Thank you again, CraigR (I hope this info. posted.)

Simpson Jumbo Tractor list

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