Kubota Diesel Motorcycle

[Yooper]

When I tried to fit the clutch to the shaft, I didn't notice that the key way in the clutch shaft was not broached to the standard depth. It was about .055" less than standard. I don't want to go any deeper in the stub shaft with the key way because I'm afraid it would crack and lead to failure. So I machined down the key and checked for fit.

That should be the program!

 

[BadDog]

Congrats on a successful and clean result!

For future reference, while a slotter (or shaper) would be easiest for a job like that, you can do it on a lathe. Easiest is to take an old school HSS boring bar, the kind with square holes at 90* on one end and 45* on the other end. Grind the bar similar to boring, but with the cutting edge and clearances rotated for broaching. With the part still in the chuck jaws, you then rack the carriage toward the chuck to make the first cut. Clear the bit using cross, rewind the carriage, in-feed for next depth of cut with cross, rack the carriage down, repeat until desired depth is reached. If you can grind HSS bits, this should be straight forward, though a bit slow and laborious...

 

[torch]

With the part still in the chuck jaws, you then rack the carriage toward the chuck to make the first cut. Clear the bit using cross, rewind the carriage, in-feed for next depth of cut with cross, rack the carriage down, repeat until desired depth is reached. If you can grind HSS bits, this should be straight forward, though a bit slow and laborious...

Don`t forget step 1 -- lock the spindle in position.

 

[BadDog]

Good point! Sorry, the wife was yelling at me to get to the table for supper.

 

[coachgeo]

looks awesome.

 

[coachgeo]

Flying to Dallas to work on the bike some then bringing it back to OH via Uhaul. The load home will include a spare parts bike and a Dieselized KLR that is road ready. Will use it to commute this summer. Approx 55mph cruiser @ 120+mpg

https://youtu.be/HbDcLHvKiU8

 

[Yooper]

Like I say coach, you keep it interesting! Keep us updated.

 

[skeets]

Yeppers I wana see this frankinbike on the road !! Gawd this is like watching Roadkill Garage

 

[coachgeo]

Yeppers I wana see this frankinbike on the road !! Gawd this is like watching Roadkill Garage

This is the bike it copies except Tranny.
https://www.youtube.com/watch?v=2LOZQ1eR-CA

This is the tranny (behind the bubble) on this bike (same frame as above bike)
https://www.youtube.com/watch?v=eVm-3oL7yS0

My Tiger will eventually get either a Turbo or Supercharger as well. Maybeee.. the KLR also.

 

[skeets]

Coach,, I know where there is an old Ural I wonder how hard it would be to go with something like that in a hack?

 

[coachgeo]

Coach,, I know where there is an old Ural I wonder how hard it would be to go with something like that in a hack?

There has been numerous Ural Conversions to diesels. Many fit a 3cyl diesel in them real nice. Seen a few where they remove fuel tank and relocate it as a side tank between bike and hack. Friend of mine has done three of them.

I'd suggest a north south engine placement with a short chain and sprocket up to an aux. shaft that runs a CVT First pulley. Belt to the Last pulley being direct drive of U joint for the driveshaft. Reason for the semi-redundant chain and sprockets is so one can tune final ratios more easily.

 

[Roland]

Check out
https://www.google.co.uk/url?sa=t&r...el-klr&usg=AFQjCNFJRnOqc4Q3EeJum46FQLk-aaRpug

I know Kelly Flynn of SW Motorsports who put the Kawabota together. Interesting project but I think the bike looses all its advantages by becoming way to heavy.

http://www.swmadventure.com

 

[coachgeo]

Check out ... (Kowbota url)

I know Kelly Flynn of SW Motorsports who put the Kawabota together. Interesting project but I think the bike looses all its advantages by becoming way to heavy.... (Kowbota adventure page)...

Well aware of the Kowbota. We have communicated off and on.

Not sure about the KLR.... it is known to be a very heavy Adv. Bike in the first place so it may weigh about the same with diesel??? not sure though maybeee more? Your friend will know this better than I. On that build they they used a D950; the largest and heaviest of the Supermini Kubota engines.

As for my Tiger. though.... am betting it will end up lighter than stock. Tiger is a 3cyl engine already from factory PLUS transmission tagged on the engine. Mine will get the lightest Supermini when looking at it with a weight to power ratio eye (D722); though this mayyy be marginally heavier "engine" than stock .... I'll have about 4/5ths lighter tranny than stock (a CVT setup). So overall pretty sure I'll end up lighter than a stock Tiger. Still with that I might find it is too heavy for me. Im only 150lb soaking wet. Will see.

 

[coachgeo]

Of the bikes bought back the KLR diesel is now licensed and my computer to work rig. Might have to fill the tank ..... ahhhh, once a year say around mid-Oct? When I put it away for the winter.