[Prairie_dog]

Hello folks.  I'm new here, and looking for a set of primary cases, including clutch and gearbox for a single cyl diesel project in a Japanese frame (can't get the Enfield into Canada).  I'm hoping for a 5 speed box, and it can be used as long as it's still sound.

Any leads?

Cheers,
Prairie_dog

[Bankerdanny]

I have a 5-speed box I would sell.

I picked it up on ebay a few months back to upgrade my Bullet. However, I didn't know at the time it was a direct bolt on and have decided not to use it.

I haven't even taken it out of the box it was shipped in.

I am wrapping up some work on my Bullet, afer which I can give the box a basic look over.

[Prairie_dog]

Interesting... I'm guessing that's without the clutch or primary covers? 

When you are able, please give me a sense of what you would want for it, what you've got, etc.  You can also email me at ajgagnon @ nucleus.com.

[Bankerdanny]

I  guess I need to open the box then. 

But I can tell you off the top of my head that it doesn't have the primary or clutch.

[deejay]

I've got the 5 speed inner primary case and electric start motor if you are interested. I'm converting mine to a kick start model.

[deejay]

pm me if interested

[cyrusb]

Have you considered a Comet style tranny -clutch unit. They are fairly inexpensive and are well suited for the diesel.  I would not use the enfield driveline even if I was converting an Enfield.

[Prairie_dog]

I've been considering the Comet clutch/torque converter thing, but I'm not sure I could live with an automatic transmission in a bike.  I'm sure it would be cheaper and easier though, so the jury's out.  The engine swap probably won't happen until next winter, as I'd like to start riding this thing as I chop it bit by bit (going for a bobber/old school look).

So the Enfield tranny is that bad?  I heard that the 5 speed was a bit better.  I will follow up with the PMs; thanks folks.

[cyrusb]

Whoa! the Enfield tranny is good , but not for the diesel. Ratios are all wrong for a small diesel. They don't have the throttle control of a similar gas engine or the power curve. U tube has videos of guys shifting the hell out of them and they crawl along at 40 mph.Comet style trannys will do that for you while you just keep the throttle pinned, they also can give you more than a 1 to 1 final drive, much needed for the low rpm power delivery of the diesel. The only thing the comet leaves you wanting is the kickstart, but my 6ld260 Lombardini starts easily with a rope and has an electric starter. It also has an easy to mount drive side bolt pattern. Perfect fo an industrial belt tranny, with minimal machine work. As you can see I power a generator with mine, until gas goes to $5 a gallon. Maybe next year?

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[Bankerdanny]

I would think the Enfield box would do, but you need to install a much larger front sprocket to raise the gear ratios to work better with the low rpm delivery of the diesel.

[cyrusb]

Well, the enfield box does work, but Prairie dog is converting a Japanese bike. The amount of work to adapt it would outweigh the benefits.imho

[Bankerdanny]

I suppose, but since separate trans such as the RE's are rae these days he doesn't have many options.

[geoffbaker]

I looked at the Comets but decided to go with the standard RE driveline for now. We'll see how the conversion goes. Most do opt for a bigger sprocket... 19 tooth.

[geoffbaker]

Whoa! the Enfield tranny is good , but not for the diesel. Ratios are all wrong for a small diesel. They don't have the throttle control of a similar gas engine or the power curve. U tube has videos of guys shifting the hell out of them and they crawl along at 40 mph.Comet style trannys will do that for you while you just keep the throttle pinned, they also can give you more than a 1 to 1 final drive, much needed for the low rpm power delivery of the diesel. The only thing the comet leaves you wanting is the kickstart, but my 6ld260 Lombardini starts easily with a rope and has an electric starter. It also has an easy to mount drive side bolt pattern. Perfect fo an industrial belt tranny, with minimal machine work. As you can see I power a generator with mine, until gas goes to $5 a gallon. Maybe next year?

cyrusb, do you know of any good sources on the net about comet conversions? I'm interested in learning more...

[axle]

on the robin diesel model im sure they used the the albion transmission. i could be wrong . on the taurus they used a lombardi bike frame and trans. ill have to take a look at my book .

[axle]

i just checked my book. the robin used a standard enfield trans. it also says to speed is measured by using a calander not a stop watch.  top speed with a diesel was 65mph. but mpg was near 200mpg.

[michigandon]

Personally, I would like to build a 22 horse Punsun twin, like this one here:

http://www.biker-click.de/details.php?image_id=283

http://www.youtube.com/watch?v=RBLZSmalPyI

[doransignal]

is there some book on how to do the diesel conversion? or what is the diesel that you start with|?

[1Blackwolf1]

  Geoff Baker did a diesel conversion using a Yanmar clone engine.  If you do a search of the site you can find out most of what he did.  He also had a web site address, but can't remember what it is at the moment.  He would be the guy in the know on the conversion process.  Will.

[Bullet Bill]

  Geoff Baker did a diesel conversion using a Yanmar clone engine.  If you do a search of the site you can find out most of what he did.  He also had a web site address, but can't remember what it is at the moment.  He would be the guy in the know on the conversion process.  Will.

Can't remember the URL either, but you'll find it if you search "border to border on ten gallons of biodiesel."  Good stuff, great site, awesome idea for a bike.