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 Murray 11/36 11hp. How to reinforce the Frame?

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MoTiJo
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PostSubject: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 14th 2023, 4:19 pm

Hello, i have a murray 11/36 and i want to modify the frame for offroading. How and where should i weld/reinforce something, and ...how? Murray 11/36 11hp. How to reinforce the Frame? Weld_m10
Murray 11/36 11hp. How to reinforce the Frame? Murray10
Murray 11/36 11hp. How to reinforce the Frame? Cut_a_10

The pictures should explain what my plan is. what do yall think of my plan? good or nah. When i finish one side imma do the same thing to the other side of course. that should reinforce the frmae good enough I think. THE WOOD IS JUST FOR SHOWING PURPOSES.IMMA USE REAL STEEL LATER INSTEAD OF WOOD OFC.

Thanks to all pepole replying and for your ideas. (Im from Germany so my English is not the best)
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Brianator
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 14th 2023, 4:45 pm

The best way to reinforce the stamped "pan frames" is to do as so underneath, or something similar to. You could use angle iron or even bed frame rails instead of box tube, this is how the race guys do it. Murray 11/36 11hp. How to reinforce the Frame? Scree155


My All Terrain Tractors:
- "The WarHorse" ~ 1984 Sears Craftsman LT(V)11 (MTD Built) (Romping in Progress!)
- Roper "Trailblazer" ~ 1986 Roper LT110CR (Trailblazing in Progress!)
- The "Mud Duck" ~ 1969 Bolens 1225 Hydro (2022 Build Off 2nd place!)
- The "Silver Bullet" ~ 1984 Sears Craftsman LT(V)11 (MTD Built) (Part 1)
- The "Silver Bullet" (Take 2) ~ 2024 Build Off entry (Work in progress)
- Roper "Offroadster" ~ 1979 Roper T4328 (Romping in Progress!)
- 1973 Massey Ferguson MF12 ~ (Sold to a good home)



                             Click Here To See The DIY and Build Threads I've Created!

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MoTiJo
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 15th 2023, 10:09 am

@Brianator Okay thanks, im still gonna buy 30x20x3mm box tube to reinforce the frame because its pretty cheap here and looks good. The tractor/frame picture you sent me is a racing lawnmower and i want to build a offroad lawntractor, does the frame of an offroad mower need to be more reinforced? I dont want i to bend/break tho.
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Brianator
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 15th 2023, 10:16 am

Yes it is a racing mower and I chose that pic because it was the best example I could find, in the offroad world similar reinforcements are made as can been seen around here by browsing some build threads. Keep in mind the racers are also ridiculously hard on their machines and need to stop the frame from flexing so what you see is really good.

You can also add a cross or x brace in the rear section to help. If you think you're going to be really rough with yours I would recommend reinforcing your dash/steering column as well. Problem with the "pan frames" is they tend to have alot of flex to start off with.

Hey @Murraymountain and @MightyRaze you guys are the Murray experts here, can you offer @MoTiJo some advice as well please!?


My All Terrain Tractors:
- "The WarHorse" ~ 1984 Sears Craftsman LT(V)11 (MTD Built) (Romping in Progress!)
- Roper "Trailblazer" ~ 1986 Roper LT110CR (Trailblazing in Progress!)
- The "Mud Duck" ~ 1969 Bolens 1225 Hydro (2022 Build Off 2nd place!)
- The "Silver Bullet" ~ 1984 Sears Craftsman LT(V)11 (MTD Built) (Part 1)
- The "Silver Bullet" (Take 2) ~ 2024 Build Off entry (Work in progress)
- Roper "Offroadster" ~ 1979 Roper T4328 (Romping in Progress!)
- 1973 Massey Ferguson MF12 ~ (Sold to a good home)



                             Click Here To See The DIY and Build Threads I've Created!

                                            ~My Real Hobby Is Collecting Projects!~
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MoTiJo
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 15th 2023, 10:29 am

@Brianator Thanks for your tipps. The steering collum on my mower isnt realy that stable. Im also going to reinforce that but i know how becuase i have seen a vid about how i can reinforce it. My murray has a peerless 700 gearbox, so that means it has a chain driven axle. Imma get kart bearings for the axle. The bearing-Blocks are going to be screwed onto some steel that i weill weld under/in the frame. thats aslo going to lift the back a bit, wich is not bad. Right now the diff-axle is beeing held by platic bushings that are worn down. I also have a question that has to do something with the transmission but imma post this question in the transmission/transaxle thread.

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MightyRaze
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 15th 2023, 10:41 am

Brianator wrote:

Hey @Murraymountain and @MightyRaze you guys are the Murray experts here, can you offer @MoTiJo some advice as well please!?

What you showed is basically what I have seen.  I've also seen angle used.  Boxed would probably take more flex out.

I'm more familiar with Murray C channels. Murray 11/36 11hp. How to reinforce the Frame? 102878487

The expert on those frames would probably be @redzz02 but he's not around much anymore.


Murray 11/36 11hp. How to reinforce the Frame? Sig115PROJECTS:
     Marshal ........93 Craftsman GT6000      
     Red Bandit ...72 Wheel Horse Raider 12
     Dirty Rat........77 Sears Suburban
     Bowser..........01 Murray Widebody LT
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Have a question? Ask me! Type in "@MightyRaze" in your post!
Murray 11/36 11hp. How to reinforce the Frame? Sig214Murray 11/36 11hp. How to reinforce the Frame? Sig314

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Murraymountain
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 16th 2023, 4:08 pm

I'm on the same page as  @MightyRaze here. Only done any modifying to a stamped frame Murray once and never really did any frame mods. But yeah from what I've seen done on stamped frames, the reinforcements in the pic posted are what I would think is best. Even for offroading. So  @Brianator is definitely giving good advice there.


If you think your plan would be beneficial for strength, I would say go for it. The only flaw I see right off the bat, is the mount points in the back. That plate you want to mount to is extremely flimsy and isn't gonna hold up. I would try to make a 90 degree turn downward at the back there and mount to the reinforcement that will be on the underside of the frame if you do that first.

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MoTiJo
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeJanuary 17th 2023, 5:18 pm

@Murraymountain I know that the back plate is really flimsy. If imma reinforce the frame on that point i have to reinforce it with welding - not that big of a deal. Im gonna go with the normal reinforcement. Welding a "frame" out of box steel tube (30x20x3mm) under the original stamped frame. I hope that this holds up well. If i notice any problems im gonna also reinforce it with the plan that i have.
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MoTiJo
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PostSubject: What steel size to use to reinforce offroad mower frame (Murray 11/36)   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeFebruary 2nd 2023, 12:51 pm

Hello guys,
Is it okay if i use 20x20x3mm box tube Steel and weld a 'Frame' under my normal Lawntractors frame? Or should i use 30x20x3mm rectangular steel tube?
I want my frame not to bend/flex and be strong to handle some good offroad terrain. The steel should also not be too heavy. The frame is a "pan" frame i think (i dont know how you call these kind of frames...) Murray 11/36 11hp. How to reinforce the Frame? Whatsa14

Thanks for your Help/Advise!
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Brianator
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitimeFebruary 2nd 2023, 6:32 pm

[mod]I've merged your post into this topic of yours to keep all info together[/mod]

Really it's just personal preference, both should work well but the 20x20 will provide more clearance without sacrificing much strength but that's just my opinion.


My All Terrain Tractors:
- "The WarHorse" ~ 1984 Sears Craftsman LT(V)11 (MTD Built) (Romping in Progress!)
- Roper "Trailblazer" ~ 1986 Roper LT110CR (Trailblazing in Progress!)
- The "Mud Duck" ~ 1969 Bolens 1225 Hydro (2022 Build Off 2nd place!)
- The "Silver Bullet" ~ 1984 Sears Craftsman LT(V)11 (MTD Built) (Part 1)
- The "Silver Bullet" (Take 2) ~ 2024 Build Off entry (Work in progress)
- Roper "Offroadster" ~ 1979 Roper T4328 (Romping in Progress!)
- 1973 Massey Ferguson MF12 ~ (Sold to a good home)



                             Click Here To See The DIY and Build Threads I've Created!

                                            ~My Real Hobby Is Collecting Projects!~
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PostSubject: Re: Murray 11/36 11hp. How to reinforce the Frame?   Murray 11/36 11hp. How to reinforce the Frame? Icon_minitime

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