Diesels

[Walter Keller]

Anybody mess around with the Yanamar 6hp - thought it would be cool to build a diesel veggy powered bike.
http://cgi.ebay.com/New-Biodiesel-r...VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247

 

[gocartkid]

Sounds like you've got yourself a good idea there!

 

[kibble]

Whoa, that's pretty cool. I didn't know they had diesel engines that small.

 

[Kenny_McCormic]

Problem with diesels is diesel gets better fuel economy but no savings occur cause gasoline is cheaper.

 

[ed1380]

even though diesel takes less purification

 

[AutoMX]

i think (im just guessing) that gas leaves other stuff that can be used for plastic and other stuff meaning more $ in the end. eitherr way, the military diesel dirtbikes get double the mileage of a comparable 4 stroke gas, which is obviously enough to offset the 15% - 25% or so more the fuel costs. unlike ethanol which takes tweaking with carbs/fuel injection, biodiesel is jut a direct replacement and it's clean and pretty easy to make too.

 

[Walter Keller]

Veggy oil

Kinda like the idea of just filtering the veggie oil - The plan would be having a small tank of diesel for starting a cold engine than switching to the veggie tank after warmup - use heat from the exhaust to warm up the veggie oil. Another way is a 50/50 mixture of diesel/veg oil and do away with the heating idea. Since the diesel engines are relatively low RPM I was thinking of a offroad bike - Tall fat ATV tires for woods riding. Making biodiesel can be messy.

 

[AutoMX]

well sure it can be but it's not harmful to the environment so if you work outside and spill, who cares. its not like gas where you dont know whats gonna happen to the grass and whatever else it gets on.

 

[sayre315]

diesel is more $ because outa the one barrel that they have only about 15% comes out diesel while 75% gasoline
the rest is used to make oil's, plastics, asprin ect.

 

[2or3wheels]

HAHAHA 19:1 compression ratio. Also it says 3600 RPM thats the same as any gas with a govenor, so not lower RPM, just cant go much higher than that.

 

[Walter Keller]

Thinking of selling a couple extra engines around here to help finance one of those clone diesels.

 

[Jblankster]

bumping this thread, havent been posing much.


i had the idea of a diesel a while back, but then they were crazy expensive and also were huge ( like last summer) now they have these smaller ones that are also cheaper. im thinking about getting this!

 

[ed1380]

you could get a 2 or 3 cylinder from a small tractor or trailer generator. used or broken would be cheaper
20-30 diesel hp. thats about 40-60 ft/lb torque

 

[Russ2251]

Anybody got a link to single cylinder diesels for purchase?
Maybe 6hp (more or less) range?
Used to see them on Ebay, haven't seen them in a while.

 

[crazycart]

Ive seen people take the diesels and turn them into high comp. Gas/alcohol race engines. Pretty cool.

Russ, look at top of page...

 

[Russ2251]

Seen anything cheaper than that?

 

[jr dragster T]

We have them around where I live at princes auto and $300 is the cheapest you will see them for.

 

[crazycart]

Recipe for a cheap diesel using a briggs 5hp flatty:
Beef up con. rod with some flat cast iron
Smear JB weld on top of the piston
Take out head gasket
Make some kind of glow plug out of a bolt, wire, and a car battery
Heat up the valves WHITE HOT then dunk them in ice cold oil/water mix
Replace recoil rope with cable to compensate for increased compression
Put Diesel fuel into gas tank
FIRE IT UP

 

[Russ2251]

Oldsmobile tried that and failed miserably.

 

[crazycart]

Ahh the old GM350....