[AT] 430V
Dave
rotigel at me.com
Sun Sep 3 19:15:43 PDT 2017
I believe it’s a technical term, Herb. It applies to ONLY a select few situations!
Dave
> On Sep 3, 2017, at 5:35 PM, Herb Metz <metz-h.b at comcast.net> wrote:
>
> Dean, have not heard that term in a long time. Herb(GA)
>
>
> -----Original Message-----
> From: deanvp
> Sent: Sunday, September 03, 2017 4:46 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] 430V
>
> Yep, if the piston is at the top or bottom of the stroke, not much torque is
> being applied to move the piston. If so you may be sol.
> -------- Original message --------From: Stephen Offiler <soffiler at gmail.com>
> Date: 9/3/17 1:08 PM (GMT-08:00) To: Antique tractor email discussion
> group <at at lists.antique-tractor.com> Subject: Re: [AT] 430V
> I'll second what Charlie said, and add another factor:
>
> You've been in there with a bore scope, right? Is the stuck piston near
> TDC or BDC? If so, the geometry isn't giving you much mechanical advantage
> against the piston.
>
> SO
>
> On Sun, Sep 3, 2017 at 12:26 PM, charlie hill <charliehill at embarqmail.com>
> wrote:
>
>> Spencer, have you tried loading pressure against it in the other
>> (opposite) rotation?
>>
>> I am still of the personal opinion, if it was mine and stuck that tight,
>> I'd want to see what's going on inside it. Even if you get it to break
>> loose aren't you going to be worried about the damage that might
>> be done if you start and run it without knowing exactly where and why
>> it is stuck?
>>
>> Charlie
>>
>>
>>
>> -----Original Message-----
>> From: Spencer Yost
>> Sent: Sunday, September 03, 2017 9:37 AM
>> To: Antique tractor email discussion group
>> Subject: Re: [AT] 430V
>>
>> Thanks Tom. The tractor is a very low hour tractor, and I am very amazed
>> at
>> how little play there is to develop any real acceleration with the roll
>> back-and-forth method. I have tried chocking one wheel, raising the other
>> and shock loading that way. With the set up I just put together yesterday
>> I
>> can vertically rock , from the operator's platform, the tractor and get
>> some real good up and down shock loading(engine hoist arm flexes a bit).
>>
>> PS. The hoist did not leak down over night.
>>
>> Spencer Yost
>>
>>> On Sep 3, 2017, at 12:35 AM, toma at risingnet.net wrote:
>>>
>>>
>>> I think a little shock action (clunk clunk back and forth) in 5th gear
>>> may produce better results than constant weight.
>>> Tom
>>> --
>>> Sent from myMail app for Android Saturday, 02 September 2017,
>>> 08:58PM -0700 from Spencer Yost < yostsw at atis.net> :
>>>
>>>> I just checked on the tractor and Nada. The hoist cylinder is holding,
>>>> and now that I think about it, I think I did replace the cylinder about
>>>> eight or 10 years ago. I think the fear I have about the cylinder not
>>>> holding relates to the old one that I used to have that I have since
>>>> replaced.
>>>>
>>>> I had not thought about the 4x4 straps, but I had thought about moving
>>>> the hoist back some. I have limited space to work with, so I ruled that
>>>> out. As for weights I may add some tomorrow. I have some weights from
>>>> the John Deere B I used to own, and some weights for my Pacer that
>>>> are
>>>> not installed currently. As for gearing I am using fifth gear. I did
>>>> only earn a B in or physics so I may be wrong about this; but I believe
>>>> 5th gear(this tractor does have the 5 speed option) on the wheel is the
>>>> same thing as first gear in normal engine powered circumstances and
>> would
>>>> generate the most torque. I would love some discussion on this. I
>>>> don't
>>>> have a lot of confidence in my understanding.
>>>>
>>>> Spencer Yost
>>>>
>>>>
>>>>
>>>> Spencer Yost
>>>>> On Sep 2, 2017, at 9:38 PM, Dean VP < deanvp at att.net > wrote:
>>>>>
>>>>> What would increase the torque would be strapping a 4x4 to each wheel
>>>>> and
>>>>> then using the hoist 6 feet or so feet back away from the wheels.
>>>>> Adding
>>>>> weight to the tractor over the axle will also help. I'd have to think
>>>>> about
>>>>> it a bit which gear would transmit the most torque to the engine.
>>>>> Inserting the right length board under the hoist would eliminate any
>>>>> leak
>>>>> down.
>>>>>
>>>>> -----Original Message-----
>>>>> From: at-bounces at lists.antique-tractor.com
>>>>> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Spencer
>> Yost
>>>>> Sent: Saturday, September 2, 2017 6:02 PM
>>>>> To: at at lists.antique-tractor.com
>>>>> Subject: [AT] 430V
>>>>>
>>>>> The shop reorganization happened today, so I had the opportunity to
>>>>> try
>>>>> to
>>>>> apply constant pressure to the engine by raising the rear wheels. An
>>>>> engine
>>>>> hoist and a fence stretcher used as a spreader bar seems to fit the
>>>>> bill.
>>>>> The cut-outs in the wheels that the chain loop through are at 90
>> degrees
>>>>> to
>>>>> vertical so I should be generating as much force as possible. Engine
>>>>> still
>>>>> has not moved but I just started. The engine hoist cylinder is not
>>>>> leaking
>>>>> down like I seem to remember it would, so I will leave it overnight.
>>>>>
>>>>> PS: To show you were an optimist I am, I drained the penetrating fluid
>>>>> from
>>>>> the cylinder so it wouldn't spray all over the shop when the engine
>>>>> let's
>>>>> go. :-)
>>>>>
>>>>> PSS. I remember enough of college physics to know that lifting it
>> more
>>>>> than just barely off the ground actually decreases force So I'll keep
>>>>> a
>>>>> close eye on the engine hoist to make sure it's not leaking down.
>>>>>
>>>>> Stayed tuned.
>>>>>
>>>>>
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>>>>
>>>>
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