Diesel Knuttar

Peter_senior

Peter_senior

Member
Aerodynamiken på en hoj med förare, oavsett om det är en slimmad sporthoj eller något annat, är uppenbarligen inte gynnsam. Det är väl det som är problemet.

/Peter
 
Bob Sweden

Bob Sweden

New member
smedpeter

smedpeter

New member
Bob Sweden skrev:
Ner under 0,4 l/mil kommer man ju normalt med en 11 hästars 125cc fyrtaktare som får jobba lite, typ 90 knutar på motorvägen med 100 kg gubbe i allväderskläder.


/B
Klicka för att visa mer...

Ja, du har precis rätt ! För min del är dieselprojektet inte något som lockar pga att det är någonting extra och ovanligt, utan just det, att man får ner bränsleförbrukningen avsevärt, och att man kan t.o.m. kan köra på egentillverkat bränsle. Jag är ju en grön liten man, så för mej har det varit litet intressekonflikt att åka hoj för nöjets skull och bidra till växthuseffekten. Snart kan jag köra på solrosolja...både låååångt, billigt och miljövänligt :)
 
smedpeter

smedpeter

New member
Vill man verkligen sitta sådär inklämd som en ärta i en ärtskida ?
Då tror jag att jag hellre åker bil.:wink: För mej är hojåkning en ute-aktivitet. I den där skapelsen är man mer inne än ute.
Men projektet är riktigt intressant ändå. Påminner om tyskarnas gamla trehjuliga Messerschmidt...
 
woody

woody

New member
smedpeter skrev:
Ja, du har precis rätt ! För min del är dieselprojektet inte något som lockar pga att det är någonting extra och ovanligt, utan just det, att man får ner bränsleförbrukningen avsevärt, och att man kan t.o.m. kan köra på egentillverkat bränsle. Jag är ju en grön liten man, så för mej har det varit litet intressekonflikt att åka hoj för nöjets skull och bidra till växthuseffekten. Snart kan jag köra på solrosolja...både låååångt, billigt och miljövänligt :)
Klicka för att visa mer...

Min drar 1.8 liter / 100 km ...så jag kan väl kalla mig för "liten grön man" med ;-)
 
smedpeter

smedpeter

New member
Hej på er alla dieselknuttar (eller presumtiva sådana) ! Man skulle inte tro att våren har kommit och solen skiner, när här är så tyst på detta forum. Eller är ni alla ute och kör eller bygger febrilt ?
 
smedpeter

smedpeter

New member
Är det någon byggare som vill köpa en splitterny dieselmotor med elstart, kinesisk Yanmar-kopia 410cc ? Hör av er i så fall så skickar jag några bilder. Femtusen kronor. Motorn finns i skrivande stund i Karlskrona, men transport kan säkert ordnas ;-)
View attachment 4735
 
Last edited:
powerglide

powerglide

New member
A Diesel Bike, Would You?

The idea of a diesel motorcycle has been around for quite some time now, and it's still a mystery why it hasn’t been developed on a larger scale. While the motorcycling world has always revolved around traditional petrol engines, it seems that steering more engineering efforts in the diesel direction could pay up, after all.

When asking “why so few diesel bikes?” some answers pop up and they might set back almost anyone dreaming of such a contraption. The first reason for having so few diesel-powered motorbikes lies in the very construction of the engine.

Diesel engines are bigger than the petrol ones and, inherently, – heavier; when it comes to motorcycles, bigger and heavier is by no means better. It may come in handy when trying to create a monster-chopper, but with fuel prices rocketing these days it's hard to believe that a manufacturer would overlook the impact of increased weight on a bike project.

With petrol engines being light and small, bikes can also be lighter, making little compromise to power. Retrofitting a diesel engine into an existing frame is not at all easy, and the dimensions are probably one of the lesser worries.

If you've driven both petrol and diesel cars, you've probably noticed that the diesel ones come with way more vibrations than their petrol siblings. The very nature of the engines' construction differs a lot, and this demands a complete re-thinking of a bike's frame if it's going to house a diesel core.

Even more, a diesel engine is a lot noisier than a petrol one. You may have not noticed that when driving a car, and that's because a car's engine compartment has a lot of room for sound insulation, a luxury the bikes simply can't afford. Hence, the need to design a diesel engine with a reduced noise floor, compliant to the automotive industry regulations and standards; even more, riding itself comes with a lot of noise caused by wind – and adding the thunderous breath of a diesel engine may not be to every rider's liking.

Another setback for diesel-powered bikes is the bigger compression of the engine and the need of a bigger flywheel. Due to the nature of the working principle, a diesel engine needs more energy to start than a common petrol one.

Back in the day when bikes used only kickstart levers, starting a diesel engine would have been quite a small adventure. With slightly colder weather and all the things that can go a bit wrong when it comes to the functioning of a motorbike, it would be little wonder that kickstarting a diesel could take quite a long time.

Nowadays, with almost every bike having an electric start, this problem has been solved and provided you've got a big, strong and healthy battery, starting may not be such a big problem, at least not until winter.

During the 1980s, NATO has used the already famous diesel version of the Kawasaki KLR650 but, for some reason, the fad did not spread. Military or not, that diesel bike had a lot of strong points such as multi-fuel capability (plain common diesel, old Kerosene, aviation Kerosene, Bio-Diesel and, of course, NATO-spec diesel).

It had the first bike-purpose diesel engine designed by the Hayes Diversified Technologies research company and delivered 28 BHP, with a flat response between 1500 and 7000 rpm. Not quite the sportsbike some might dream of, but with 110 mpg (roughly 2.1 l/ 100 km) we're talking some serious fuel economy.

All in all, diesel-powered motorcycles are a tad different from the generic idea most people (and even common riders) have about the two-wheeled fun. They're nowhere near as powerful as their petrol counterparts, and neither are they as responsive to the throttle. On the other hand, a diesel engine comes with a lot of usable torque available from the very low rpm zone, and beautifully spread up to the high-rev section.

The fuel consumption of a diesel engine can sometimes be half of that of a petrol one and this is probably an element of crucial importance in today's world. Low sulphur fuel means a cleaner environment, and the bio-diesel (soy and so on) are becoming more popular, adding to the overall pros of choosing such a motorcycle. The higher price tags of a diesel two-wheeler may be a setback, though.

The diesel bike dream has not ended, though; it's absolutely fantastic to see bike manufacturers committing to creating new, better machines powered by diesel engines. Hopefully, these new bikes will attract more followers and will become more popular – Ducati brings a diesel Monster, the Dutch EVA seem to become successful with their Track T-800CDI (also with a 2-wheel drive option), Irish mechanics offer Triumph Tigers with diesel engines taken from Smarts, and so on.

This list is actually longer than you'd expect and we're glad about that – more bikes equals more options and this means more fun!
Klicka för att visa mer...
 
smedpeter

smedpeter

New member
Annars ett bra inlägg, men jag undrar när det skrevs - skribenten verkar vara belastad med ganska gammal information ; Dieslarnas utveckling de senaste åren har varit jättebra, det är inte mycket i storlek som skiljer från en bensimotor nu längre, och vi-vi-vi-vi-vibrationerna är ett minne blott. Många dieselmotorer behöver inte ens hälften av bränslemängden jämfört med bensinmotorer med samma cylindervolym - nå, nu har bensimotorerna också blivit snålare, renare och bättre.... Det är väl så det ska vara.
Men när vi tekniskt står där vi står idag, är det mycket underligt att det inte finns en serieproducerad "folkbike" till vettigt pris. En sån satsning kan väl knappast gå fel...eller ?
 
smedpeter

smedpeter

New member
Nej, ingen av dem går på diesel numera när man lagt ned tillverkningen av Royal Enfields dieselversion :-(
 
woody

woody

New member
Track kastar in handuken !

Dear reader, potential customer or information applicant at Track Dieselmotorcycles.
With this writing we have to let you know that our product has proven itself in time. We have proven this with a huge combined mileage on all bikes sold and happy customers. But however the positive result , due to the bad European economy, bankruptcy of some of our parts producers, loss of investors, and despite large requests but not enough customers to do the job, we are forced to shut down. We will stop our PR efforts, have already stopped our production, and will end the company as a legal entity.
A nice and technically solid Dutch product will leave the market for now. And we hope better times for our products will arrive in time.
Dear Customers, we thank you for your trust in our company and product. You have made Track what it is today. You have put this motorcycle on the international map. This with a Texas mile world record, military purchase and customers in America, Canada, Iceland, Germany, England, Holland, etc etc.

Erik Vegt owner of Track Dieselpowered Motorcycles NL
 
woody

woody

New member
smedpeter skrev:
Hej på er alla dieselknuttar (eller presumtiva sådana) ! Man skulle inte tro att våren har kommit och solen skiner, när här är så tyst på detta forum. Eller är ni alla ute och kör eller bygger febrilt ?
Klicka för att visa mer...

Jepp är ute o sliter på dieseln allt vad jag kan ...många sköna turer kvar hoppas jag innan sommarn e slut ...;-)
 
Du måste logga in eller registrera dig för att svara här.
Top