Author Topic: MTD step-thru C/P  (Read 27096 times)

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Offline George Herrin

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Re: MTD step-thru C/P
« Reply #30 on: March 16, 2013, 08:56:57 am »
I can shed some light on this as I was head tech for US in the early 2000 era for several years. The intent then was to keep guys from cutting up the chassis. They were cutting holes in them to pull the motor and pulley all at the same time. then they found moving the motors around in that hole made big differences. Thus the rule.  Thats the original intent back then. Cannot speak for the intent or interpretations of present tech team.
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Offline NH Mowster

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Re: MTD step-thru C/P
« Reply #31 on: March 16, 2013, 10:13:43 am »
Ive dropped my oppy down into the frame about an inch so it will line up with the transmission so the transmission wont sit between my legs. I know that it lowers the COG and has some advantages but without dropping the engine i couldnt get the engine to line up with the 700. Even though its still in the exact same spot as the factory position just dropped down its illegal to run?
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Offline Jim Knutson

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Re: MTD step-thru C/P
« Reply #32 on: March 16, 2013, 10:18:41 am »
here it is straight from the rule book: " Crankshaft must be in original orientation and clearance hole in the frame". my thoughts are this, if someone changes the original engine to match the class they build for, then they are allowed to position the engine where it fits, or drill new bolt holes if it wont bolt to the original holes for the original engine. with that being said, it is legal to do so, as long as you have the crankshaft in the same clearance hole for the engine that came in it originally. so, the rules mean that in a prepared class, you cannot run your original vertical shaft engine that came in the mower, in a horizontal position( the "orientation"), and it must be in the original clearance hole in the frame, not in the center of said hole...simply in the original hole. i would argue to tech, that i am using my engine in the vertical position ( orientation), as rules require, and that the new engine plate clearance hole, is within the same perimeter of the original clearance hole. i have seen plenty of builds, that have utilized the moving of the engine in the frame, and have re-drilled the mounting holes, and the crankshaft still utilizes the original clearance hole ( not centered in the hole), hence, they are legal. the rules do not state that i cannot cut out the original frame parts, nor do they say i cannot weld in my own plate. like i stated in my earlier, posts, if the USLMRA comes to the west coast to run a points series season ( fat chance), and they choose to tell me it is not legal, i will simply load up my mower, and go run with the local clubs that do not have such prejudice to a pretty simple matter. i am in no way bashing the USLMRA, but, it  simply does not make sense to me to say that what i have done is not legal.
DISCLAIMER: to all people watching my build post....PLEASE do not use my engine plate idea, and think it is legal, as the USLMRA has not ruled on whether it is, or is not legal, and i will not be held responsible for your particular indiscretion in the use of one.
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Offline 2nstoys

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Re: MTD step-thru C/P
« Reply #33 on: March 16, 2013, 01:13:11 pm »
Ive dropped my oppy down into the frame about an inch so it will line up with the transmission so the transmission wont sit between my legs. I know that it lowers the COG and has some advantages but without dropping the engine i couldnt get the engine to line up with the 700. Even though its still in the exact same spot as the factory position just dropped down its illegal to run?

This was discussed last year in a post. No, you cannot move the engine down in the frame.
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Offline Jim Knutson

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Re: MTD step-thru C/P
« Reply #34 on: March 16, 2013, 04:12:12 pm »
i should add, that the engine, and clearance hole in my engine plate, ARE indeed, in the original position of the factory, and that it now sits 1/8" HIGHER than stock....so, i by no means have any advantage, other than a no flex mount.
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Offline NH Mowster

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Re: MTD step-thru C/P
« Reply #35 on: March 16, 2013, 04:36:48 pm »
 :bash: :bash: :bash: :bash: :bash: :bash: :bash: :bash: :bash: well it looks like ill be doing alot of cutting and going back to the drawing board  :censored:
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Offline crazycraftsman

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Re: MTD step-thru C/P
« Reply #36 on: March 16, 2013, 05:15:33 pm »
Any updates on your build.? Did you get the master installed??? keep the pictures coming. :)
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Offline NH Mowster

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Re: MTD step-thru C/P
« Reply #37 on: March 16, 2013, 05:21:26 pm »
Was talking to our president and he said that its legal to run with our group but not for national sanctioned events. Didnt plan on running this mower in national races just local venues so i feel a heck of a lot better  :twothumbsup:
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Offline Jim Knutson

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Re: MTD step-thru C/P
« Reply #38 on: March 16, 2013, 06:39:28 pm »
Any updates on your build.? Did you get the master installed??? keep the pictures coming. :)
i went to the steel yard today, and picked up the metal for my spindle arms, and the mounting angle for the m.c. i also went and picked up another old FMC Bean Cutler that i have been making payments on, so no more work on the mower until tomorrow.
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Offline crazycraftsman

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Re: MTD step-thru C/P
« Reply #39 on: March 16, 2013, 11:29:12 pm »
Man those things are crazy looking.Going to race it. :lol: :lol:
owen
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Offline Jim Knutson

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Re: MTD step-thru C/P
« Reply #40 on: March 18, 2013, 11:51:53 am »
Man those things are crazy looking.Going to race it. :lol: :lol:
:lol:....no racing these Owen. i just love them, and restore them. they are for my son's to have after i am not here anymore. :D
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Offline crazycraftsman

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Re: MTD step-thru C/P
« Reply #41 on: March 18, 2013, 10:50:55 pm »
NICE. :D
owen
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Offline Jim Knutson

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Re: MTD step-thru C/P
« Reply #42 on: March 21, 2013, 01:00:40 am »
well it's been raining the last few days, and i once again have a small creek running through the shop, it receded slightly today, so i went out and did some work. i got the brake pedal and m.c. mounted on my piece of angle iron, and it is ready to bolt in place:





then, i went on to making my spindle arms:


laid out on the bar stock, and a few rough cuts.


cut out separately.









tack welded them together, then finished them to the same profile.


they are finished, and will get holes drilled, then ready to weld to the spindles.

i will post more pics after i get more done tomorrow.









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Offline Jim Knutson

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Re: MTD step-thru C/P
« Reply #43 on: March 26, 2013, 12:12:15 am »
here is more progress pics:


under side of dash, with bearing mounted.










steering all set, just need to weld up.


my "T" clutch


i welded a piece of 3/4" square tube to the running board, and the end of the frame bolts, then ran an adjuster rod with a nut on the end to make an adjustable spring tensioner.


top view of the pedal positioning.






a few shots of it on the ground.

more pics later this week as i make more progress.


If you quit when you're behind, you will never win.

Offline redline

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Re: MTD step-thru C/P
« Reply #44 on: March 26, 2013, 07:52:04 am »
You would not even be able to see the top of the picnic table in the middle "outdoors" pic if it was at my house. You need any snow? I can send you some..cheap!
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