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Snapper 1650 Gets A Diesel

lombardini 1650 snapper

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#16 Cvans OFFLINE  

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Posted February 17, 2014 - 10:52 PM

Just thinking out loud here. Your going to have one end of the shaft attached to the engine which is floating on rubber mounts and the other end of the shaft pass through a bearing that is bolted rigid to the tractor frame? You might want to consider mounting that bearing on a firm rubber mount to help eliminate stress to the shaft. I've done that in this in the past with excellent results. Actually used the rubber motor mounts from under a Kubota engine.


Edited by Cvans, February 17, 2014 - 10:53 PM.

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#17 MH81 ONLINE  

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Posted February 18, 2014 - 03:38 AM

Gla dk took the time to catch up on this. Nice looking progress.
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#18 coldone OFFLINE  

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Posted February 18, 2014 - 06:31 AM

Just thinking out loud here. You might want to consider mounting that bearing on a firm rubber mount to help eliminate stress to the shaft. I've done that in this in the past with excellent results.

 

I knew there was a detail I was missing! Thanks for pointing it out. :thumbs:



#19 coldone OFFLINE  

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Posted February 24, 2014 - 06:02 PM

Drive parts arrived today but I wont get to play with it till this weekend. Kids have soccer practice every night except thursday. Hope to get the drive system sorted out and finish all the welding this weekend. Once thats done its onto the wiring and then running hopefully.


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#20 coldone OFFLINE  

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Posted March 03, 2014 - 06:36 PM

Finally got some time this week to play with the drive setup. Its a straight rip off of the 1855 series drive setup. The parts were the original AC drive shaft shortened to 8 inches. Had to mill in a keyway for the sprocket hub. The sprocket is 15T 50P 3/4 hub. I used a flanged bearing to support the loose end. For the Snapper drive shaft I ordered a 3/4 11T coupler and milled in a 3/8 keyway. The sprocket hub is 15T 50P 1.5inch bore. The couping is 1.5OD and its a tight fit. I had an extra bearing carrier from an 1855 so I used it. The frame work will be mounted, with bolts, to the engine mount at the back of the engine. The C clamps are holding it now. I will also have to drill and tap the drive shaft so that I can secure the splined coupler on to it.

 

I picked up the 3/4 inch bearing I needed a TSC this week. I did not realize that they were a different OD than the orignal bearings used in the drive shaft setup. I was not able to use them, I have to get the correct carriers. I am unsure if the 2 piece drive shaft will work for this. If I use just the 1855 carrier, then the drive shaft has a lot of wobble due to the looseness where the 2 piece drive shaft is coupled. I plan on using the orignal 1650 shaft bearing set up to stableize the 2 pieces. The 1650 bearing is just a few inches away from where the 2 shafts are coupled. I dont know if using 1650 bearing will allow enough movement  in the forward shaft to allow for tightening the chain drive.

 

      I                            I

I----I----------------------I-----====-----------------------=====--[hydro input]

      I                            I

SP         Front shaft           Coupling   Rear shaft     coupling             

      Bearing               Bearing

       1855                    1650

 

 

 

DSC00220.JPG DSC00219.JPG DSC00218.JPG DSC00217.JPG DSC00216.JPG DSC00215.JPG


Edited by coldone, March 03, 2014 - 06:52 PM.

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#21 coldone OFFLINE  

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Posted March 03, 2014 - 06:38 PM

DSC00221.JPG DSC00222.JPG DSC00223.JPG DSC00224.JPG DSC00225.JPG DSC00226.JPG


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#22 olcowhand ONLINE  

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Posted March 03, 2014 - 06:47 PM

If chain reliability becomes a factor, I'd switch to a sealed O-ring type chain.  They outlast regular roller chain 4 or 5 times to 1.


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#23 coldone OFFLINE  

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Posted March 15, 2014 - 08:17 PM

I got time to play today. I got the engine installed and wired up today. Not too happy with the drive chain setup but I am gong to see how it does. I will probably end up going to a one piece drive shaft instead of the original two piece. Need to get fuel filter, fuel, and a battery tomorrow. Of course its supposed to rain all day tomorrow.

 

Last weekend I only had time to lengthen and bend the drag link. I added about 10 inches to it and had an adventure in bending it. It took a few tries but I finally got to fit. I had to cut an inch or so off it. I ended up have more turn in the left than the right so I adjusted the linkage and now it turns equally both ways.

 

Sorry no pics today but I will get some tomorrow and maybe a vid of it running!


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#24 coldone OFFLINE  

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Posted March 17, 2014 - 08:37 PM

Got it all wired up and a new battery for it. Had  to clean out the fuel pump and then prime the system. That wasnt fun. Got it fired up today!!!!!!!!!!!!!!!

 

Got to work on the drive line a little bit. Angles and dangles not looking good. Minor problems.

 

Here is the Vid of the start up

 


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#25 propane1 ONLINE  

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Posted March 18, 2014 - 07:31 PM

Lot of work and thinking on that job. Will be nice when done. Wish I was as smart as you people. Great story.
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#26 Cvans OFFLINE  

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Posted March 19, 2014 - 06:12 AM

Considering the fact that it is cool enough to see your breath in the video, I'd say that engine starts and runs very nicely. You get the drive shaft figured out and your well on the way to completion. Thanks for the video. 


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#27 propane1 ONLINE  

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Posted March 19, 2014 - 03:05 PM

thanks for the video. just wondering what hp and ft lbs of torque it has ? thanks again, Noel   



#28 coldone OFFLINE  

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Posted March 19, 2014 - 05:15 PM

thanks for the video. just wondering what hp and ft lbs of torque it has ? thanks again, Noel   

 

I have seen the engine listed as both 16HP and 18.5HP. IDK about the torque. It is a 10ld400



#29 coldone OFFLINE  

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Posted March 19, 2014 - 05:16 PM

Considering the fact that it is cool enough to see your breath in the video, I'd say that engine starts and runs very nicely. You get the drive shaft figured out and your well on the way to completion. Thanks for the video. 

Hopefully that was our last little ice event for the year.

 

I am having to rethink the drive system, the lower sproket and shaft are sitting at an angle and putting the chain in a bind. Stay tuned.



#30 propane1 ONLINE  

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Posted March 19, 2014 - 08:00 PM

Sure will. Noel





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