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#121
02-03-2014, 08:58 PM
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Re: First build ,cat D11
I have seen timing chain tensioners used that simply apply pressure on the chain with the use of a slippery plastic. However you may need to use a threaded rod on that idler gear as you won't have a constant source of lubrication. Maybe a hydrolic type tensioner pushing on the idle gear bracket?
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#122
02-03-2014, 11:47 PM
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Re: First build ,cat D11
I was trying to think of something that would complicate such a simple idea.
 lol,,,, I do like your idea of some sort of hydraulic tensioner. Thank you for the idea, but for my Lego mind storming I'm just going off that idea and thinking of something like an idler sprocket or just a simple wheel (wheel would probably be better) on a spring loaded shaft. The spring would keep some tension on it but the shaft would stop it from giving too much. As tension would reverse from one direction to the other. Like a double pulley on a shaft with a mount in the middle, keeps tension but limits travel. Yea,yea,yea,, it sounds complicated but is quite simple with one moving part.
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#123
02-04-2014, 12:34 AM
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Re: First build ,cat D11
Yep that would be basicly the same principal but use of a spring instead of hydroloc.
Also depending how you mount the wiper motors. You possible could incorporate a jack screw to adjust the motor to pull the chain taught... Kinda like a motorcycle rear wheel is adjusted to take up slack... Ok not my build...I'll shut up now!  . LOL
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#125
02-04-2014, 02:50 PM
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Re: First build ,cat D11
Quote:
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#126
02-04-2014, 05:01 PM
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Re: First build ,cat D11
I'm not a machinist , just learning. But for you that are I didn't want to spend $ for a insert grooving tool (and don't like to wait for mail )that I don't think I will use much. I did a little research and tried to grind one out. It's a hss blank and I have the end just a touch wider. Will it be ok to use it with the top staying flat? Many set it a touch below center? Planning on using it on some 1/2" stuff. Only a groove deep enough for retaining clips.
 And got the motor mounted, will be counter sinking bolts or using button head. 
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#127
02-04-2014, 08:57 PM
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Re: First build ,cat D11
You should be fine if you have a small relief on the bottom too . I've cut 100's of grooves with home ground grooving tools . If you need any help come down to the shop anytime , I'm about an hr south of Williamsport .
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#128
02-05-2014, 09:51 PM
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Re: First build ,cat D11
Quote:
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#129
02-05-2014, 09:56 PM
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Re: First build ,cat D11
Got some time between shoveling snow to get the motors mounted. I have to shave about 1/32 off each motor gear housing to get them to fit. They look big in there, i don't think this will be underpowered as the weight go on.
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#132
02-07-2014, 05:46 PM
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Re: First build ,cat D11
Very neat a clean job. Should be very quiet. Keep the pics coming.
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Joe
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#133
02-07-2014, 08:10 PM
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Re: First build ,cat D11
   
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#134
02-07-2014, 08:37 PM
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Re: First build ,cat D11
Yes, also the cab, I want to be able to push dirt this summer. I'm not planning on doing an interior. Going to just use smoked glass for the cab. So all the cab room will be able to house electronics ect. Possibly in another build I will be willing to tackle the small details of interior operators compartment but for now I've got my hands full on just the mechanical workings.
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#135
02-07-2014, 09:47 PM
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Re: First build ,cat D11
I'm interested in seeing how those motors hold up in heavy pushing. I see those on evilbbay. sure hope you can make it down to York in April to display your "work in progress"
we have an outdoor show at the Brownsvville,PA twice a year where I set up a pile of dirt to work off in may and August.
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#136
02-07-2014, 09:50 PM
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Re: First build ,cat D11
Looks good , will you have it pushing for cabin fever expo in April ? That's the closest show to me in York ,an hr and 15 min south of me . I'm going to try to get to the national pike shows in Brownsville , pa this year . All dirt shows for us
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#140
02-08-2014, 05:01 PM
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Re: First build ,cat D11
  Don't ya hate it when you are all proud and excited that a plan comes together just to realize you $&@##% up??? Lol,,, the 4 holes in the pusher arms were not planned to show, measured and drilled/ countersunk bolts from other side. But forgot I had to take off material from the front side!!! Oh well maybe a little bondo when paint time comes. Going to start work on the blade and front radiator hood.
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Re: First build ,cat D11
. Keep up the momentum!
Linear Mode
