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 [23] Flexible, by Krawler86

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[23] Flexible, by Krawler86 Empty
PostSubject: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 13th 2023, 11:33 pm

#Buildoff2023

[23] Flexible, by Krawler86 Img20128

This is my project, flexible.  It's a John Deere L130 that I'm completely reconfiguring.  The hydrostatic transaxle is dead and I'm swapping in a live axle and a peerless 700 clone.  I'm also sectioning all the bodywork, sinking the seat into the body pan, lengthening the wheelbase, reenforcing the frame and building an exhaust from scratch.  I'm taking each part of this project as it's own whole project and trying to make everything exactly how I want it and as strong and reliable as possible.

My plan is to go through, modify, or completely replace every aspect with my own version of things.  No part will be untouched and there's still tons to do.  I'm also trying to make it look as stock as possible.

The end goal is a jack of all trades type of vehicle.  I want to be able to go fast with reasonable handling, drift on dirt and wet pavement, launch hard in a straight line, wheel power line roads and off-road trails at the closest OHV park and be able to push and tow various disabled Toyota land cruisers at work.

The entry photo is the state of the project currently.  These are some pictures of the build in various states over the last few months.
Very first mock-up on tires.
[23] Flexible, by Krawler86 Img20129

Working on the steering knuckle.  This is the kind of thing I'll be doing to every aspect.  Strength, reliability and solid performance is the goal of every part down the last bolt.
[23] Flexible, by Krawler86 Img20131

Going through the transmission.  I have an idea to be able to slam through gears under high load without any possibility of blowing the case up from selecting two gears at once if I convert to 3 speed, but I don't know yet.  
[23] Flexible, by Krawler86 Img20130

Approved - Jan 14, 2023 MightyRaze

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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 14th 2023, 3:15 am

[adm]Welcome to the 2023 Build-Off.[/adm]

Year for the speed builds. afro


[23] Flexible, by Krawler86 Sig110Tractors:
     Dirty Rat....77 Sears Suburban
     Li'L Red......98 Murray Widebody
     Bowser......01 Murray Widebody LT
     Other projects
Have a question? Ask me! Type in "@MightyRaze" in your post!
[23] Flexible, by Krawler86 Sig210[23] Flexible, by Krawler86 Sig310
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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 14th 2023, 8:48 am

Welcome!

I'm looking forward to watching this take shape, you've been doing a great job already!

Have to ask though...a Peerless 700 clone? Please explain! Lol


My Tractors:
1969 MTD Seven Hundred (Running/Driving ~ Light Yard Duty)
1969 Bolens 1225 (194) "Mud Duck" (2022 Build Off Finalist ~ Work Still In Progress)
1973 Cub Cadet 149 (Saved from Impending Doom ~ Tinkering In Progress)
1974 Bolens G10 (1055) (Running/Cutting/Snow Throwing ~ General Workhorse)
1984 Sears (MTD) LT(V)11 "The Warhorse" (Offroad Trail Rig ~ Romping In Progress)
1984 Sears (MTD) LT(V)11 "Silver Bullet" (2023 Build Off Entry ~ Work In Progress)
1986 Roper LT110CR "Trailblazer" (Offroad Trail Mower Project  ~ Work In Progress)

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

                                            ~My Real Hobby Is Collecting Projects!~
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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 14th 2023, 3:43 pm

Cool build. My Lawnmower Kart and my Offroad Murray also have the tecumseh Peerless 700. My kart has 3 forward, 1 neutral and 1 reverse gear. My Murray has 5 Forward, 1 neutal and 1 reverse gear. Im gonna try to use a 428 reinforced motorcross chain on my 11hp murray. Is that going to work? what chain size do you run?
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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 14th 2023, 3:55 pm

Brianator wrote:


Have to ask though...a Peerless 700 clone? Please explain! Lol

The transmission I'm using is a progear t7512.  5 speed 700 copy.  The case looks slightly more reenforced than a real 700 and the shift detents are very stiff.  Overall I'm pretty happy with the guts and I think it's going to be a good transmission.  My main concern is the output shaft and coarse spline, the minor diameter is not as big as the fine spline variant, but it was unavailable when I ordered it.  If I break it, I'm pretty sure I can swap to the fine spline shaft but I'm doing a lot of extra work to give this coarse shaft as good a chance as possible.  

I haven't been posting in my original thread lately so I have a store of pictures to go through and write up today, it will have tons of transmission and clutch stuff that I've been working on over the last two weeks.


MoTiJo wrote:
what chain size do you run?

I'm just going to run standard #40. I think it will be strong enough, but abuse will tell me for sure.

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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 14th 2023, 4:39 pm

Thanks for the explanation!

You're original thread is locked until the Build Off is either over or you pull out but worry not because they can be merged together afterwards to make it all one thread!


My Tractors:
1969 MTD Seven Hundred (Running/Driving ~ Light Yard Duty)
1969 Bolens 1225 (194) "Mud Duck" (2022 Build Off Finalist ~ Work Still In Progress)
1973 Cub Cadet 149 (Saved from Impending Doom ~ Tinkering In Progress)
1974 Bolens G10 (1055) (Running/Cutting/Snow Throwing ~ General Workhorse)
1984 Sears (MTD) LT(V)11 "The Warhorse" (Offroad Trail Rig ~ Romping In Progress)
1984 Sears (MTD) LT(V)11 "Silver Bullet" (2023 Build Off Entry ~ Work In Progress)
1986 Roper LT110CR "Trailblazer" (Offroad Trail Mower Project  ~ Work In Progress)

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

                                            ~My Real Hobby Is Collecting Projects!~

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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 14th 2023, 7:31 pm

This is a big update that covers the last two weeks. I took a break from working on things until January so I have 133 pictures to find the best few of.


I put together a very basic transmission mount so i could start getting an idea of where to put the transmission, seat, and clutch components. Ive read that using all the case mounting bolts is worthwhile, so i stuck these on using the 6 bottom holes. I also drilled and tapped all the mounting holes from m8x1.25 to m10x1.5. I don't have matching hardware yet, but that will come in time.
[23] Flexible, by Krawler86 Img20134

I also salvaged the mower deck clutch during the disassembly and cut out its mount so i can add it wherever i see fit.
[23] Flexible, by Krawler86 Img20133

I clamped the transmission about where i thought it should go and tacked the clutch base onto the top chassis pan.
[23] Flexible, by Krawler86 Img20132

Overall i think this is going to work out for the clutch. I have no idea what kind of belt tension im going to need for the clutch engagement feel i want, but it should be pretty adjustable with such large pulleys. Im going to start with the stock deck belt clutch spring and go from there. I havent figured out where to put the springs yet, but il mock that stuff up when i have the actual pulleys im going to use. They are ordered but not here yet.

Next i wanted to work more on the body drop. I took an inch out of the bottom of the console and welded it back together for starters.
[23] Flexible, by Krawler86 Img20136
[23] Flexible, by Krawler86 Img20135

This is how its sitting after the small console drop and a chunk taken from the steering shaft to lower the wheel.
[23] Flexible, by Krawler86 Img20137

Im not happy with the side profile and proportions, the body is too high still. I need at least a few more inches out of the console and hood to make me happy. I decided to hack more from the console.
[23] Flexible, by Krawler86 Img20139

I laid tape down for a guide and used an angle grinder / cutoff wheel to remove another section from the middle. I think i cut 2in out of it this time. If i remember right, the blue tape i used was 2in wide.
[23] Flexible, by Krawler86 Img20138

It sits so much better now with the body drop and shortened steering shaft. Typing this also made me realize that the picture i posted up top as the first mockup is not the right picture. This is the first mockup with the sectioned console.
[23] Flexible, by Krawler86 Img20140

[23] Flexible, by Krawler86 Img20141

I think this will be the final height of the steering wheel and console. its as low as it can be without interfering with my legs working the clutch and throttle. It also looks pretty good from the side other than the hood lines now. The side indent on the console used to line up with the sweeping lines on the side of the hood. Il probably trim things to get some style lines going later in the final stages, but for now its just fine.

This is my damaged mockup steering shaft that im using to try different heights. Its set to the length i need currently and i was surprised to see how much i took out of it compared to stock. I lowered the wheel tons.
[23] Flexible, by Krawler86 Img20142

Next i started working on the clutch some more. I started to get the linkages working and levers / cranks mocked up. I decided to use the brake pedal pivot bar for the clutch actuation. I cut the pedal itself off and just used the pivot portion which will be driven by a crank from the actual clutch pedal. I cut a notch into a universal bumper mount tab we use at work and drilled a bunch of holes into it for linkage adjustments and welded it on to the clutch pivot. I used a stock clutch linkage that i shortened and welded back together with a 90 degree rotation in it. I will probably make some nice linkages for it for the long term, but this will get it working for now. I just want to use an easily replaceable link end so when it wears out, i wont have to buy a Deere part and cut it to make a new one. I also drilled a bunch of holes into a piece of scrap flat bar for actuating the clutch pulley plate to weld onto the deck clutch.
[23] Flexible, by Krawler86 Img20145

[23] Flexible, by Krawler86 Img20143

[23] Flexible, by Krawler86 Img20144

I think this is going to work out, i just need to figure out the tensioning spring and replace the idlers with dead bearings. I decided to finalize the clutch placement and welded it. I also painted some misc parts. Red for the clutch actuation lever, yellow for the clutch idler plate and green for the steering gear.
[23] Flexible, by Krawler86 Img20146

[23] Flexible, by Krawler86 Img20148

The next piece i tackled is the transmission mount. The two little strap bits are not going to cut it and i needed something more robust. I added a tab on each side of angle to try to incorporate the brake caliper mount bolts in addition to the 6 bottom mounts. This will also add strength to the whole mount itself.
[23] Flexible, by Krawler86 Img20147

I drilled and tapped the two brake caliper mounts to m10x1.5 and bolted the tabs i made to the trans and tacked them to the mounts. Its starting to cradle the transmission and i really hope it helps keep it together under some stress and abuse.
[23] Flexible, by Krawler86 Img20150

[23] Flexible, by Krawler86 Img20149

I also made a bottom plate to tie everything together further. I drilled a 1.25in hole for the input shaft and the drawn bits on the corners is material to remove to make clearance for 4 of the transmission mounting bolts.
[23] Flexible, by Krawler86 Img20151

I welded the bottom plate on with the transmission bolted in place to hopefully reduce deformation then i plopped some wet paper towels on it because the case was starting to get pretty hot. I was welding these really hot and there was a decent amount of surface area. Things were getting really hot.
[23] Flexible, by Krawler86 Img20152

One thing in the future that il have to address is the output shaft. I dont want the transmission output bushings to have to deal with the tension load of the chain. I think it will put far too much force into the case and cause premature wear and excess friction on the bushings. Im also concerned about the diameter of the output shaft getting bent from a clutch dump or a hard bounce. The final drive will be supporting essentially the entire weight of the vehicle and myself so i want to isolate the transmission entirely from those forces. The transmission should only have to deal with the rotational torque force and thats is. Something along these lines with a couple bearings is the idea.
[23] Flexible, by Krawler86 Img20153

I received the engine pully and hub finally and wanted to mock up the clutch to a more final state. I tacked the drive pulley to the 1in hub for the engine and mounted the engine temporarily. I have a few half inch belts that i've been using for aligning things and i noticed that this green stripe belt was really close to the right length. After mounting up everything i found out that this belt is exactly the right length. Its not at all the right style, i need a wrapped belt for smooth engagement but it was awesome having a belt that i can use for clutch setup and measure for finding the actual belt when its time.

Toyota FJ62 power steering belt is perfect, what a cool coincidence. It engages well, disengages well and the clutch moves a reasonable amount for slipping.
[23] Flexible, by Krawler86 Img20154

[23] Flexible, by Krawler86 Img20155

Im happy with the clutch for now, that brings it up to current. Not much more to do with the mechanism, just the pedal and linkages once its time to start on the foot controls. Now in keeping in the spirit of cleaning and prettying things up, i tackled the flywheel. This engine has been sitting for quite a while and is pretty rusty and dirty. I popped the flywheel off and cleaned out a ton of fine dust packed all in the magnets of the alternator as well as cleaned off some oxidization on the cooling fins.
[23] Flexible, by Krawler86 Img20158

[23] Flexible, by Krawler86 Img20157

I cleaned up the flywheel with a wire wheel after cleaning the dirt out. Looks so much better.
[23] Flexible, by Krawler86 Img20156

Now its a lightweight aluminum racing flywheel ready to turn 10,000 rpm. Thats what aluminum paint does right?
[23] Flexible, by Krawler86 Img20159

I put it back on and was pretty surprised that the little bolt with a 13mm head needed 49ft lbs. I thought it was going to feel sketchy but it cinched up quick and solid at 49. Must be a nice fastener and good threads.
[23] Flexible, by Krawler86 Img20161


One unfortunate thing i discovered working on the flywheel is the end play. It felt loose but i thought it might just be a small engine thing. I decided to look up the specs and my heart sank a little when i found it was supposed to be i think .003-.020. Something like that. I measured it at .053. I havent decided if im going to do anything about it or not. Being a vertical shaft engine and the flywheel on top, its not going to be bouncing around back and forth as it might with a horizontal. Im going to research some into maybe doing bearings, possibly even just crank thrust bearings. If im in there though i feel like i should roll rod bearings in and do rings / cleanup hone. if i do all that il want to lap valves and do new head gaskets. i dont know how much i want the engine to snowball yet, il decide that stuff later.

[23] Flexible, by Krawler86 Img20160

Next i wanted to flesh out the output shaft support for the transmission. I want some way to transfer all chain forces directly into the chassis for maximum transmission durability. I started with some angle i found in the scrap bin as most brackets on this project do. I drilled half inch holes into the face for rosette welds. This will hold the inner support bearing with an outer flange for the outer bearing.
[23] Flexible, by Krawler86 Img20163

I decided to add a little extra surface area to the lower section for more strength as well as adding two more rosettes. I didnt want it to bend the chassis or start a crack if the forces werent distributed over enough surface area.
[23] Flexible, by Krawler86 Img20162

I used one of my 123 blocks to setup and tack the outer portion of the support on so that the top surface of the bracket is flat and square to the chassis. Then welded it up.
[23] Flexible, by Krawler86 Img20164

I did some rosettes in the outer flange as well as a perimeter weld. I like the look of this bracket and it was fun learning some new welding techniques. Im a very amateur welder compared to the people i work with but i got some compliments on improving with this one. Im happy with it and the more welding i do, the better il get.
[23] Flexible, by Krawler86 Img20167

I ran a bead across the top as well and then ground it down with a flap disk. I used a big flat file to surface the whole thing and take off the highs around the perimeter. I want this as flat as possible. I ran my indicator around and other than the little gaps and troughs around the weld in the center that doesnt matter, the whole surface is flat within .005. Thats plenty flat enough for mounting my bearings.
[23] Flexible, by Krawler86 Img20166

I got some 5/8in pillow block bearings for the output shaft and a coarse spline shaft for a big walk behind mower that uses a coarse spline 700. Im going to shorten the shaft and machine a new keyway wherever i need it and mount this 10t sprocket i got. I already have a coarse spline coupler from my original idea of welding a sprocket to it to put a sprocket directly on the transmission. Im really happy with how all this came out. I intentionally set the bearing mount surface about .030 below where it needs to be so that i can buy some assorted shim stock to put under the pillow blocks. I want to dial in the height and alignment with the transmission perfectly so the splines dont wear weird.
[23] Flexible, by Krawler86 Img20165

This brings up everything to current as of friday the 13th. I have chain and final drive sprockets on the way, they should be here in the next week or 10 days. When i had the transmission out i counted all the teeth and figured out the ratios. With the 8in engine and transmission pulleys, 1:1, and a 10t-30t chain final drive, 3:1, 5th gear @4000 rpm will be 35mph on the 22in turf tires. I also bought a 48t for a final of 4.8:1 for when i run the 26in kenda bear claws for trail riding.

Theres still so much to do, and im not sure what im going to work on monday, but im having so much fun with all this. This was a ton to write at once though, im looking forward to going back to daily or every other daily short updates.

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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 15th 2023, 12:32 am

Now THAT'S an update! Lol. Great work man that's looking just awesome!

Crankshaft endplay if often set/adjusted with the sump gaskets, they generally come in a set with different thicknesses so you can mix and match until you're happy with it.

Your welds look great btw!


My Tractors:
1969 MTD Seven Hundred (Running/Driving ~ Light Yard Duty)
1969 Bolens 1225 (194) "Mud Duck" (2022 Build Off Finalist ~ Work Still In Progress)
1973 Cub Cadet 149 (Saved from Impending Doom ~ Tinkering In Progress)
1974 Bolens G10 (1055) (Running/Cutting/Snow Throwing ~ General Workhorse)
1984 Sears (MTD) LT(V)11 "The Warhorse" (Offroad Trail Rig ~ Romping In Progress)
1984 Sears (MTD) LT(V)11 "Silver Bullet" (2023 Build Off Entry ~ Work In Progress)
1986 Roper LT110CR "Trailblazer" (Offroad Trail Mower Project  ~ Work In Progress)

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

                                            ~My Real Hobby Is Collecting Projects!~
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Krawler86
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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 19th 2023, 11:23 pm

This week ive been a bit busy with some home and family things so i have not put as much time into this as i want, but i still got some neat things going on. I started on the seat mount. I grabbed some rectangle tubing from the scrap bin and cut it to match the width of the frame. I drilled some large holes and some small holes so the fasteners would sit inside the tubing.
[23] Flexible, by Krawler86 Img20169

I also added a couple extensions to the back side to grab the other two seat mount holes and drilled it the same. Then on a whim i drilled some 1 1/8 speed holes. This seat bracket is already going 55mph and the project still has a long ways to go. It made the bracket noticeably lighter and i like the looks. Plus it should keep corrosion down being able to air out and dry easily. Il try to shoot some paint inside as well when i paint the chassis.
[23] Flexible, by Krawler86 Img20168

I set the seat where i want it and it happened to lay into a little dimple in the chassis rails which made it easy to tack in place and weld. The seat sits slightly leaned back at ride height and is a pretty comfortable height. I might need to raise the seat a little bit for chain clearance for my low ratio sprocket, or maybe il notch the seat.
[23] Flexible, by Krawler86 Img20170

I also used some little trapezoidal brackets that we use at work for generic mounts for whatever, they happened to be the right size and look nice. The seat mount should be very sturdy.
[23] Flexible, by Krawler86 Img20171

I received my fast sprocket in the mail and did a quick mockup with it. This is 30t for a 3:1 final drive. Should be lots of fun with the turf tires in the dirt or wet pavement, or the snow if we get some next winter. I love the snow but its rare.
[23] Flexible, by Krawler86 Img20173

To keep the ground clearance as good as possible, im going to add an idler somewhere around here. When im cresting over something that scrapes the belly, i want it to contact the rear tires and not the chain. Il have to add a couple links to the chain to get it up a little bit higher, but this is just a mockup. The chain only has 3mm of clearance to the bottom of the seat. It will be rubbing pretty bad with the 48t trail sprocket. I dont want any idlers on the forward tension side of the chain, so im not yet sure how il solve that issue. Most likely il cut a notch out of the bottom of the seat.
[23] Flexible, by Krawler86 Img20172

I am slightly concerned with chassis flexing excessively since the only crossmember behind the transmission so far is the seat mount and i dont want it to bear that much flexing load. I think i want to add a tubular X member under the seat and transmission to tie that section all together. It will help distribute the forces from the tractive support (thats what ive been calling the pillow block transmission output support) and keep the twisting forces away from the seat mount. I feel like the seat mount will crack and bend if it has to deal with all that. Its exciting to see all the pieces of the drivetrain starting to come together.

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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 19th 2023, 11:51 pm

Looking pretty good so far. As has already been said about the end play, you can adjust that by putting in a thinner sump/side cover gasket. They are usually sold in different thicknesses to adjust the end play. That being said, I'm sure it would probably be fine to use it the way it is too, even being beyond spec a bit. They have quite a bit of slop in clearances. What I normally do is use permatex black silicone to make my own sump gaskets. In that case it's pretty much the minimum amount of clearance you could possibly get as it's just about metal to metal. I bolt it together and snug a couple bolts dry tho first to be sure the crank isn't tight and so you know you have at least a little clearance. Then just glue it up a little and bolt together. I never had any leaks that way and you save on paper gaskets.
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[23] Flexible, by Krawler86 Empty
PostSubject: Re: [23] Flexible, by Krawler86   [23] Flexible, by Krawler86 Icon_minitimeJanuary 22nd 2023, 6:52 pm

loving all the high quality fab work man! killer build

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