Punsun Dnepr build completed
Moderators: Dan J, Diesel Dave, Crazymanneil, Stuart
Punsun Dnepr build completed
I've finally completed my bike. It was sure a lot more work then I figured! I still need to get the road worthiness paperwork done and the bike legal for the road, but that should not be a problem.
In the process I learned to do chroming which was something I'd not done before. Actually not chroming, but Nickel Cobolt electroplating. Looks and feels almost like chrome but way easier to do. "Easy" here is a comparative term, I learned.
Also note the mechanical stop switch above and behind the exhaust header. The electrical fuel cutoff draws 1.5Amps which I didn't think I could afford out of the very low generator output, so I made a mechanical one.
And a picture of the brothers. Behind a restored K-750 with the original engine for comparison.
sno-bro
In the process I learned to do chroming which was something I'd not done before. Actually not chroming, but Nickel Cobolt electroplating. Looks and feels almost like chrome but way easier to do. "Easy" here is a comparative term, I learned.
Also note the mechanical stop switch above and behind the exhaust header. The electrical fuel cutoff draws 1.5Amps which I didn't think I could afford out of the very low generator output, so I made a mechanical one.
And a picture of the brothers. Behind a restored K-750 with the original engine for comparison.
sno-bro
- coachgeo
- I luv the smell of Diesel...
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Re: Punsun Dnepr build completed
that is sweeeeeeeet. Classic lines.... modern diesel... nice blend
- henneberg
- I luv the smell of Diesel...
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Re: Punsun Dnepr build completed
Very nice build.
It seems you have taken all details into account when going "from a running prototype" to a "close to final edition" of a diesel bike. Details in good quality always take a lot of time !
It seems you have taken all details into account when going "from a running prototype" to a "close to final edition" of a diesel bike. Details in good quality always take a lot of time !
Last edited by henneberg on Thu Aug 02, 2012 12:44 pm, edited 1 time in total.
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Enfield Ruggerini MD151 654cc build - running: http://www.youtube.com/watch?v=b4UsIn5QLxk
Re: Punsun Dnepr build completed
WOW! What a beauty! Shame there isn't a thread about your bike because I would have loved to read about the details concerning the nickelplating etc.
Which speed are you able to reach with this bike?
Good luck with the registration. Here in Holland the mechanical stop would be a no-go. Regulations state that the engine must be electrically shut off by means of ignition key. I also love the colour. Looks a bit like my own russian bike (gasoline powered 2 stroke IZH)
Yours looks better though. I can see you've kept a fine eye for detail. Way to go man!
Which speed are you able to reach with this bike?
Good luck with the registration. Here in Holland the mechanical stop would be a no-go. Regulations state that the engine must be electrically shut off by means of ignition key. I also love the colour. Looks a bit like my own russian bike (gasoline powered 2 stroke IZH)
Yours looks better though. I can see you've kept a fine eye for detail. Way to go man!
As long as it smokes, it runs!
- coachgeo
- I luv the smell of Diesel...
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- Joined: Sun Feb 22, 2009 6:00 am
- Location: USA Ohio, Above Cincinnati, Close to Dayton
Re: Punsun Dnepr build completed
you mean THIS THREADespe wrote:...Shame there isn't a thread about your bike ...
Re: Punsun Dnepr build completed
That is a beautiful bike - what a great build.
1990 Honda NTV600 Revere
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Re: Punsun Dnepr build completed
There you go get the Chinese to build Chang jiangs with a Punsun engine! Job done
Nice job by the way it'll be interesting to see how it performs??
Re the stop espe could you not use a solenoid connected to the lever?? Best of both worlds as you would still have the lever for emergencies and the solenoid would only draw current when actually being used??
Nice job by the way it'll be interesting to see how it performs??
Re the stop espe could you not use a solenoid connected to the lever?? Best of both worlds as you would still have the lever for emergencies and the solenoid would only draw current when actually being used??
Re: Punsun Dnepr build completed
That was my thought. You could source something off tractor or semi, or a skidsteer, come to think of it.
Re: Punsun Dnepr build completed
thanks everyone! Putting on some final touches today, like trying to get the front brake to do something.
Beautiful IC espe! The 350 two stroke is a great engine, but I'll bet the sidecar is quite a bit for it to pull?
I've customized the gearbox ratios quite a bit, so I expect about an 80kmh cruise, 100kmh max. If that doesn't happen I'll change faster final drive gears. The small test hops I've taken seem to show a very strong torque and good acceleration, but even with the rubber mounted engine the vibrations are substantial.
I searched a bit but it seems that all the fuel cutoff solenoids work with the logic that they are open when electricity is connected. I guess it's a safety thing, with a reverse logic if you would loose electricity the engine would keep running until you run out of fuel.
sno-bro
Beautiful IC espe! The 350 two stroke is a great engine, but I'll bet the sidecar is quite a bit for it to pull?
I've customized the gearbox ratios quite a bit, so I expect about an 80kmh cruise, 100kmh max. If that doesn't happen I'll change faster final drive gears. The small test hops I've taken seem to show a very strong torque and good acceleration, but even with the rubber mounted engine the vibrations are substantial.
I searched a bit but it seems that all the fuel cutoff solenoids work with the logic that they are open when electricity is connected. I guess it's a safety thing, with a reverse logic if you would loose electricity the engine would keep running until you run out of fuel.
sno-bro
Re: Punsun Dnepr build completed
Again: Thumbs up!
Very nice build! Let's hope this Punsun won't break!
Very nice build! Let's hope this Punsun won't break!
- coachgeo
- I luv the smell of Diesel...
- Posts: 2002
- Joined: Sun Feb 22, 2009 6:00 am
- Location: USA Ohio, Above Cincinnati, Close to Dayton
Re: Punsun Dnepr build completed
wellllll... their just brakes LOL.sno-bro wrote:... Putting on some final touches today, like trying to get the front brake to do something. ... sno-bro
One of the few times ever saw an on the ice motorcycle race (on TV) there was this fellow who lead the whole race and the commentators were remarking often how gritty and amazing his fast cornering was in this particular race.... especially since this was not his normal style. He did win that heat.
After the race they asked him what made things different for him. He replied.... "my brakes failed in the first lap"
PS- these bikes have nasty looking spikes on their tires
Re: Punsun Dnepr build completed
Thanks for the compliment sno bro. The 350 indeed goes like a maniac . Even with the original span. It's a Duna span made almost completely out of aluminum. It weighs next to nothing.
As long as it smokes, it runs!
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- I luv the smell of Diesel...
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Re: Punsun Dnepr build completed
Do you have a source for this from the Regeling Voertuigen? I very much doubt this statement holds for any motorcycle. Specifically motorcycles admitted before Nov. 26th 1975 (only have to adhere to "permanente eisen") and probably any motorcycle admitted before 1996 as well, although I can't find a source.espe wrote:Regulations state that the engine must be electrically shut off by means of ignition key. I also love the colour.
'92 Enfield + Hatz 1B40: street legal, weld up stainless exhaust, check engine rpm and change final drive sprocket.
Re: Punsun Dnepr build completed
That's the best conversion I've seen.
It looks like a factory bike.
Well done!
It looks like a factory bike.
Well done!
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- I luv the smell of Diesel...
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Re: Punsun Dnepr build completed
If there is a regulation is it an EU regulation?? I can't imagine that it would affect older bikes if it exists? What about all the vintage machines with decompressors or the older british bikes with a stop(earth) button for the magneto??Sphere wrote:Do you have a source for this from the Regeling Voertuigen? I very much doubt this statement holds for any motorcycle. Specifically motorcycles admitted before Nov. 26th 1975 (only have to adhere to "permanente eisen") and probably any motorcycle admitted before 1996 as well, although I can't find a source.espe wrote:Regulations state that the engine must be electrically shut off by means of ignition key. I also love the colour.
On my own MZ I've used the redundant clutch lever as a stop.I figured that in an emergency I would be more liable to grab the clutch as well as brake
Re: Punsun Dnepr build completed
Here is the problem. In holland, when you switch from gasoline to diesel, under the new rules the bike has to comply to these rules as if it was a new bike. This means that no matter how old your frame is, it has to be fitted with indication lights, proper brakes, proper headlights, modern (safe) brake levers and brake indication light, E3 glas fitted etc etc. Apart from that the emission has to be within the new limits.
For the Dutch readers first there is this:
Hoofdstuk 6. wijziging in de constructie
Artikel 6.5 Bij wijziging van de wielbasis van een personenauto, bedrijfsauto, motorfiets of aanhangwagen met meer dan 1,0%, in het geval van een motorfiets zodanig dat deze meer dan 60 mm afwijkt, van de waarde die voor het voertuig is vermeld op het kentekenbewijs dan wel in het kentekenregister, moet het voertuig voldoen aan de in de hoofdstukken 3 en 5 opgenomen eisen omtrent:
a. algemeen,
b. algemene bouwwijze van het voertuig,
c. afmetingen en massa’s,
d. krachtoverbrenging,
e. stuurinrichting,
f. reminrichting,
g. de carrosserie voorzover het betreft de bescherming aan de achterzijde en de zijdelingse afscherming,
h. verlichting, lichtsignalen en retroreflecterende voorzieningen, alsmede de door Onze Minister vastgrestelde eisen met betrekking tot stijfheid en deugdelijkheid van de constructie alsmede het weggedrag.
And this:
Een voertuig dat is samengesteld uit een seriematig
vervaardigde, dragende constructie en nieuwe of gebruikte onderdelen
van één of meer andere voertuigen krijgt een nieuwe identiteit.
Hieronder vallen onder andere voertuigen met een niet door de
oorspronkelijke voertuigfabrikant geleverd chassis. Geheel of gedeeltelijk
uit bouwpakketten vervaardigde voertuigen, de zogeheten kitcars,
behoren doorgaans tot deze categorie.
Motorfietsen bestaande uit een niet origineel frame in
combinatie met onderdelen van bestaande, andere motorfietsen
krijgen eveneens een nieuwe identiteit.
De hierboven genoemde voertuigen vallen onder de
ministeriële regeling voor individuele toelating en moeten voldoen
aan de huidige technische eisen
For the Dutch readers first there is this:
Hoofdstuk 6. wijziging in de constructie
Artikel 6.5 Bij wijziging van de wielbasis van een personenauto, bedrijfsauto, motorfiets of aanhangwagen met meer dan 1,0%, in het geval van een motorfiets zodanig dat deze meer dan 60 mm afwijkt, van de waarde die voor het voertuig is vermeld op het kentekenbewijs dan wel in het kentekenregister, moet het voertuig voldoen aan de in de hoofdstukken 3 en 5 opgenomen eisen omtrent:
a. algemeen,
b. algemene bouwwijze van het voertuig,
c. afmetingen en massa’s,
d. krachtoverbrenging,
e. stuurinrichting,
f. reminrichting,
g. de carrosserie voorzover het betreft de bescherming aan de achterzijde en de zijdelingse afscherming,
h. verlichting, lichtsignalen en retroreflecterende voorzieningen, alsmede de door Onze Minister vastgrestelde eisen met betrekking tot stijfheid en deugdelijkheid van de constructie alsmede het weggedrag.
And this:
Een voertuig dat is samengesteld uit een seriematig
vervaardigde, dragende constructie en nieuwe of gebruikte onderdelen
van één of meer andere voertuigen krijgt een nieuwe identiteit.
Hieronder vallen onder andere voertuigen met een niet door de
oorspronkelijke voertuigfabrikant geleverd chassis. Geheel of gedeeltelijk
uit bouwpakketten vervaardigde voertuigen, de zogeheten kitcars,
behoren doorgaans tot deze categorie.
Motorfietsen bestaande uit een niet origineel frame in
combinatie met onderdelen van bestaande, andere motorfietsen
krijgen eveneens een nieuwe identiteit.
De hierboven genoemde voertuigen vallen onder de
ministeriële regeling voor individuele toelating en moeten voldoen
aan de huidige technische eisen
As long as it smokes, it runs!
Re: Punsun Dnepr build completed
Oops I f***ed up! The regulation I was going to present next is only applied in case of a motorcycle on LPG or Compressed Natural Gas I had made a too hasty conclusion So I guess any old way to choke the engine is o.k.
As long as it smokes, it runs!
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Re: Punsun Dnepr build completed
This is only true for motorcycles that have their frame stretched beyond 60mm. Then you have to go to Lelystad and for diesel the worst part is you have to pass a sound pressure test. Nanko still has nightmares thinking of it. So, if you can manage with the original frame, you should be fine. I don't know what it is like in Finland, but I guess since sno-bro stretched it 70mm(?) he would be hardpressed to get it on the road here legally.
Also, I'm pretty sure any LPG/CNG regulations are restricted to cars. There are no rules other than "deugdelijke bevestiging" and the likes of that. The reason for this, is that for tax purposes noone cares if your motorcycle runs on petrol, diesel or a dilithium core. Can you point me to the relevant section? For LPG tanks it is mandatory to have an automatic shutoff valve to prevent blowout, but this is mechanical.
Lastly I would like to point out that, even though we are trying to streamline regulations in Europe, they differ a lot from country to country. And this is interesting, because when you are importing a vehicle from another EU country, they just give you a new title, based on the old one, because the vehicle classification system is unified.
Also, I'm pretty sure any LPG/CNG regulations are restricted to cars. There are no rules other than "deugdelijke bevestiging" and the likes of that. The reason for this, is that for tax purposes noone cares if your motorcycle runs on petrol, diesel or a dilithium core. Can you point me to the relevant section? For LPG tanks it is mandatory to have an automatic shutoff valve to prevent blowout, but this is mechanical.
Lastly I would like to point out that, even though we are trying to streamline regulations in Europe, they differ a lot from country to country. And this is interesting, because when you are importing a vehicle from another EU country, they just give you a new title, based on the old one, because the vehicle classification system is unified.
'92 Enfield + Hatz 1B40: street legal, weld up stainless exhaust, check engine rpm and change final drive sprocket.
Re: Punsun Dnepr build completed
yes, it is interesting how the regulations are country specific. I know of cases where I modified bike had not passed roadworthiness here in Finland, so the resourceful builder "sold" it to a friend in Germany, it passed there, then he bought it back and it was licensed in Finland as an import with no problems.
Here there are no set limits to wheelbase or frame length. It just must be safe and mods done by a knowledgeable person, I had my frame welded by a professional welder to be on the safe side.
EU is consolidating regulations, but that will mostly be a bad thing as whatever is the strictest is usually adopted as the standard. Build you dieselbikes now, as it will get harder or impossible in the future.
sno-bro
Here there are no set limits to wheelbase or frame length. It just must be safe and mods done by a knowledgeable person, I had my frame welded by a professional welder to be on the safe side.
EU is consolidating regulations, but that will mostly be a bad thing as whatever is the strictest is usually adopted as the standard. Build you dieselbikes now, as it will get harder or impossible in the future.
sno-bro
Re: Punsun Dnepr build completed
Got my biked registered today! Of course it is raining here all day but just had to take it out for a spin. Runs as expected, comfortable cruise at around 80kmh. My throttle linkage does not allow full rpm (yet), so I expect top speed to be more then that after some modifications. Vibrations are considerable but manageable.
To my surprise they did test sound pressure in Finland also. As the max dB level is set by the regulations that were in effect 1970 (when the bike was first registered) the limit is so high there was no problem passing them.
I'll now drive the bike longer and longer trips and check how things hold up. So far so good!
sno-bro
To my surprise they did test sound pressure in Finland also. As the max dB level is set by the regulations that were in effect 1970 (when the bike was first registered) the limit is so high there was no problem passing them.
I'll now drive the bike longer and longer trips and check how things hold up. So far so good!
sno-bro
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- I luv the smell of Diesel...
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Re: Punsun Dnepr build completed
Congratulations! I rode my Enfield for 4 hrs yesterday and my right hand is still kinda numb, but I can't figure out if it's from clenching or vibration or both
'92 Enfield + Hatz 1B40: street legal, weld up stainless exhaust, check engine rpm and change final drive sprocket.
Re: Punsun Dnepr build completed
I love the bike, would like to see it for real, greetings from Assen.
Re: Punsun Dnepr build completed
A short wrap up on my first (short) season with my diesel bike. The summer here was very wet and cold so I didn't ride as much as I'd like, but I did do around 500km total. Relatively comfortable 80kmh cruise, although I'll look into making some vibration damped handlebar holders. No shortage of interested people at gas stations coming for a chat!
I had some problems with fuel leaks, and the engine is leaking a bit of oil from somewhere around the filter. Also the speedometer needle got cut! I guess the mighty diesel vibration was too much for it
Overall it was some really fun driving!
a short video walk around for those interested.
http://www.youtube.com/watch?v=rUGyPG_Y ... e=youtu.be
sno-bro
I had some problems with fuel leaks, and the engine is leaking a bit of oil from somewhere around the filter. Also the speedometer needle got cut! I guess the mighty diesel vibration was too much for it
Overall it was some really fun driving!
a short video walk around for those interested.
http://www.youtube.com/watch?v=rUGyPG_Y ... e=youtu.be
sno-bro
- old clunker
- I luv the smell of Diesel...
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- Location: London
Re: Punsun Dnepr build completed
Thanks for keeping us updated with your progress, and the bike looks very good!
I know what it's like when I take my bike out - always meeting people wanting to have a chat about it.
That's typical having fuel and oil leaks, I managed to sort mine out after a while. As for the engine vibrations affecting the speedo needle, can be reduced by sitting the speedo unit on a thicker rubber seal, and I added some extra black sealant to help reduce the vibration. It seems to work!
Hope you can dampen the handlebar vibrations.
Glad to know that you've had fun riding the bike Roll on the sunny weather again eventually....
I know what it's like when I take my bike out - always meeting people wanting to have a chat about it.
That's typical having fuel and oil leaks, I managed to sort mine out after a while. As for the engine vibrations affecting the speedo needle, can be reduced by sitting the speedo unit on a thicker rubber seal, and I added some extra black sealant to help reduce the vibration. It seems to work!
Hope you can dampen the handlebar vibrations.
Glad to know that you've had fun riding the bike Roll on the sunny weather again eventually....
There's nothing like the smell of burnt vegetable oil in the morning!!
1971 Royal Enfield diesel running on diesel/biofuel.
1971 Royal Enfield diesel running on diesel/biofuel.