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My David Bradley "fails"

sickle mower david bradley

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56 replies to this topic

#16 mjodrey OFFLINE  

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Posted August 30, 2012 - 04:48 PM

Hey Alan,look at it this way,at least you got some exercise for the day. :laughingteeth:

Thanks for sharing the video with us.
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#17 Amigatec OFFLINE  

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Posted August 30, 2012 - 04:59 PM

Having never seen one of these up close before, Are these units all one speed or is there a way of changing gears/speeds?? Is there reverse on them?


The older ones have just one speed. I had a 5hp on mine for a while and I used a 2 1/2" pully. WAYY to fast, I think stock is like 2" or 2 1/8". I know just driving mine around its plenty slow, but when working it, it seems a bit fast.

But like I tell them, what it lacks in horsepower it makes for in exersize.
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#18 MH81 ONLINE  

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Posted August 30, 2012 - 05:16 PM

Yeah, it's a one speed and it's a tiny little (original) engine in there. It hadn't run in 20+ years. Was in the back of my parents garage, just collecting bird poo.

Thanks for all the ideas on speed. It is to fast, no doubt.
I will have to look at it, but if I remember correctly, both pullies are the same size?

I managed to get it out and running (points, condenser, etc) before the show this year, but that was all the "Love Time" I could give it. Dunno what Dad has planned for it, but at least it's a runner. I thought you guys would get a kick out of me pulling that rope every 10 seconds.

Oh, and Daniel... You may notice some of the edits are pretty close to the actual stall out... if that answers your question about expletives.
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#19 Amigatec OFFLINE  

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Posted August 30, 2012 - 06:59 PM

This is what I found on the pulley, if you have the 2 groove pulley this is what you have.

4315m
1 1/2” x 2-1/2” Groove OR
1 1/2” x 2-1/4” Groove
Center crowned for flat belt
5/8” Bore
Aluminum or steel
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#20 KC9KAS OFFLINE  

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Posted August 30, 2012 - 07:20 PM

Looks like you were working your butt off.
I too think your ground speed is too fast....especially when the DB "jumps" when you engage the ground speed control.
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#21 Amigatec OFFLINE  

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Posted August 30, 2012 - 07:34 PM

Mine kind of shimmys when I engage the clutch.

#22 IamSherwood OFFLINE  

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Posted August 30, 2012 - 07:50 PM

Thanks for the video Alan, but I've never wanted a show to end sooner than that one.
It was painful to watch. I actually, kept looking at the moving time bar, to see when it would end.

At one point, I think I heard Karen (she was filming, right?) say, "Yeah Ok". I'm guessing she was
on the cell phone, with EMS, and they told her to call back, when you fall over.

Glad you got out of that adventure alive. :dancingbanana: :dancingbanana:

I've never been near one of those things, but what the others say, makes sense. Slow down the ground
speed, and check out the gov.
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#23 Amigatec OFFLINE  

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Posted August 30, 2012 - 07:54 PM

What motor does it have on it?

#24 MH81 ONLINE  

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Posted August 30, 2012 - 07:56 PM

What motor does it have on it?

It's like a 2.5 Hp ?Clinton? I think

Slants towards the front, if that helps

#25 Amigatec OFFLINE  

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Posted August 30, 2012 - 07:59 PM

It's an AU8 Contentail. You must have a 57561 tractor.
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#26 MH81 ONLINE  

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Posted August 30, 2012 - 08:15 PM

I thought I had it in the registry. I don't see it.

I will try to get the #'s tomorrow & see about the pulley.

#27 daytime dave OFFLINE  

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Posted August 30, 2012 - 08:35 PM

It's nice to see older machinery in use. I agree with Will though, I almost felt your pain watching it. I give you an A for effort and an A for the nice running DB.
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#28 Alc ONLINE  

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Posted August 30, 2012 - 08:58 PM

Allan on the DB I bought that had a replacement engine put on at some time they put on 2 different size pulleys , it has a sickle bar and it seems to work well even though the blades could be sharper , Al

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#29 tractorman604 OFFLINE  

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Posted August 30, 2012 - 09:29 PM

Just seems like it needs a bit of tweaking here and there. For sitting around collecting poop it sounds good and strong to me.I would love to call that DB mine..... Than :thumbs: :canada: k;s for the video Alan
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#30 wvbuzzmaster OFFLINE  

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Posted August 30, 2012 - 11:51 PM

Alan may have a Continental AU7 or AU7B which is on a model 917.5756, if not the AU8 found on 917.57561.

As for ground speed here is an interesting tidbit, the original dual v belt pulley has 2 different diameter pulleys, 2" and a 2-1/4" diameters. The rated ground speed based on those size pulleys is 2 mph for the 2" pulley and 2-1/4 mph for the 2-1/4" diameter pulley. So speed is same as engine pulley size basically.

Next, there are a few different models of sickle mower based on hp ratings, but they should all work, and I have WAY TOO MANY OF THEM. Therefore, if you need a parts sickle for your DB please ask me, I will be happy to get back the space one takes up lol.

Also, looks like you were having a blast. :)
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