Peugeot GUZZI diesel bike registered

[Nanko]

The first check was two months ago , bike failed on too many dB's from the engine , and not enough from the horn
With a silencer from a MG V50 the fuel pump throttled down to 110 km/h , a new , bigger airfilter box , I Managed to pass the test.
I was too exited to check for the measured figures , but the limit is 83 dB which is very silent , I doubt an aircooled engine ever will pass this test
Now the paperwork is finished I will spend time and money to cosmetics.
Also another rear bevel will be mounted , 120 km will correspond with 2375 rpm instead of 3100.

[Stuart]

Well done Nanko Another diesel bike hit's the road all legal Hope to see it at Hamm next year

[taildraggin]

Congratulations. A technical and bureaucratic victory!

A policy is gaining traction here in the US that allows "one custom vehicle in your lifetime" to be built that is out of current regulations. A strange compromise and no one is very sure that it will work.

Can you post some pictures of your creation?

[Nanko]

Heard rumours that regulations will change here as well , usually that is bad news .
At the otherhand its business , 600 EURO for a test which takes maybe two hours , so there is hope it are just minor changes

Will post pictures soon

[Nanko]

[taildraggin]

That is a beast!

I'll bet the TUV (equiv) technicians looked up from their clipboards and took a step back when you rolled in with that!

[arnaud]

Congratulations on the big diesel beast!
how does it handle?

[Nanko]

Thank you Arnaud .
I made few hundred illegal km with the bike , and the impression is that it is comfortable till 120 kmh , above it lacks stability.
But several things are not optimal , the frontwheel is wobbling sideways , the shock absorbers feel like they are adjusted for circuit use.
The engine however feels like an electro motor , lots of torque from 800 - 4000 rpm .
Fuel comsumption 3,5 - 3.7 l/100 km

Now back to the workshop and continue welding the fueltank , not the nicest job .... glad somebody invented filler !

[Nanko]

The PEUGUZZI is now more or less finished .

http://www.youtube.com:80/watch?v=c_7f-DiP6ng

Untill I saw the movie I was not aware it was such a heavy smoker , seems the fuelpump
needs to be adjusted somewhat.

[thundercougarfalconbird]

good job nanko, look like it runs well, as for being a heavy smoker, thats nothing, i will have to a video, but i seem to be having some injector or injector pump issues, have a missfire on one cylinder. more time to investigate that is needed.
good to see another able bike on the road

[Sphere]

Nanko, congratulations on a magnificent bike!

HiRes movie link: http://www.youtube.com/watch?v=c_7f-DiP6ng&fmt=18

[Stuart]

Great bike Nanko It looks to have gone together very neatly there. And it sounds great when you accelerate away. Great stuff

[Crazymanneil]

In a word "cool" . Nice one Nanko. Some nice looking fabrication there.

N

[andrewaust]

Yes excellent job Nanko, the fuel economy seems really good for a larger capacity engine.

Looking at the part2 youtube video it doesn't seem as if it was blowing to much smoke, it also seemed to have cleaned up quickly. Some smoke on acceleration is OK. The Enfield still smokes a bit on hard throttle (Especially on a hot day), it keeps them tailgater's off your tail

Your bike sounds sweet too, acceleration seems to look impressive.




A

[johnfireball]

Nice machine Nanko,
Your instability is probably caused by the leading link forks which are meant for sidecar use only.They sharpen the steering angle which makes for less effort to steer the sidecar around but when used solo they cause instability and wobbles.
John.

[coachgeo]

ahhhhh .... missed the leading link.

Well damn... how horrible....... you'll just have to hack it

[Nanko]

Nice machine Nanko,
Your instability is probably caused by the leading link forks which are meant for sidecar use only.They sharpen the steering angle which makes for less effort to steer the sidecar around but when used solo they cause instability and wobbles.
John.

I have been told leading link forks are used on sidecar combinations because caster can be changed without changing the steering pivot angle
The lower the caster the lighter the combination steers.
The other advantage is , the swingarm construction is compared to a telescope ,much stiffer .
And it also gives more space for my radiator
The caster figure is now 2 centimeter more than the original fork so I would expect stability has been increased.

Comments are welcome !!

But the wobbles are also " between my ears" the first testdrive with the swingarm was a drama , at 80 km/h the bike started to oscillate ,I needed full width of the road to avoid a crash , fortunately no traffic at that moment...
In the original design both legs were connected to each other close to the swing , I thought moving this point upwards would be harmless.......
After figuring out what happened , I followed the original instruction .

Maybe poor aerodymamics is the reason .
I am getting used to it now and correction is easy

[Diesel Dave]

Caster hmmm better described as trail on a motorcycle.

So long as the frame and swing arm are still stiff enough and the lenghtening as not made weaker and more flexible then the forks are clearly the cause.(the first wire wheeled Honda Goldwing had a weak swingarm that would cause collywobbles at high speed).

So to the forks - yes leading linkers are stiffer than tele's but then anything would be

It sounds like you have too much trail and this is causing your high speed wobbles, sometimes they are supplied with different axle position holes or alternate pivot positions (BMW earles forks had this for solo and sidecar use).

Your lenthened wheelbase will provide much additional straight line stability so you could possibly go with less trail rather than more - in it's current form you may have problems getting around twisty corners as the bike won't want to change direction. (like 900ss Ducati's).

What's the book trail figure for the original bike and the new one as it is now with the linker forks?

Read Tony Foal's work on trail and steering angles on an experimental BMW - he managed to increase the angle to 15degrees but maintained hands off stability by keepingh the same trail of 3.5" (90mm)
http://www.tonyfoale.com/


Dave
Dave

[Nanko]

The instability I experience is not an oscillation , its a random effect.
Its feels like something touches the steer
The effect is maximal with wind coming from the front direction
With side wind nothing happens , and the bike feels great.
Removing the windscreen made things worse , so my guess is I need
a spoiler or something , somewhere.
In the meantime I got used to it , but I would be happy to find a cure.

The original trail is 8 cm , I started with 5 cm but increased it to
10 cm which was a great improvement

Stiffnes of the leading link must be very good , I used a swivel ball joint
instead of rubber silent blocks , and the tubes are 44 mm ST52 .

I knew Tony Foal's site but never seen his tests , good info !

[Sphere]

I've had the pleasure of seeing this bike up close. It is a magnificent piece of engineering. The photos don't do it justice at all! The way the block blends into the frame, the colors for the frame and tank, beautiful finish, it's a headturner. If you attend the Hamm rally you will be able to see for yourself.

[Sidecarmikey]

Hi Nanko, that is a fine machine. Could you please tell me how long the engine is, on its own, from timing belt cover to back plate also the overall length when mated to gearbox ?
I have been lurking on these forum pages for a while, and have started to dream up the perfect off road inspired sidecar, just need to work out if it will all fit.
Ta, Mike

[Nanko]

Hi Mike

The engine is 44,5 cm , adaptorplate 3 cm and gearbox appr. 30 cm long

Nanko

[TedV]

Nanko,

Have you solved the oscilation issue? I've read Tony Foales book, and bits on his web page. Curious what actually fixed it and if his list of solutions helped you.

thanks,
Ted

[Nanko]

Ted

It is not an oscillation , that happened only once
in the very beginning , I did not follow the building
instructions and placed an ugly bracket on a nicer
place.....
After correcting that ,the bike was as stable as a rock
Only at speeds above 100KMH turbulance moves
something .
It gives an unpleasent feeling , but no danger.
The effect is worst when driving behind a truck.
I drove the bike for some 5500 km now and I've got
used to this phenomenom.
I removed the large windscreen without effect.
Leaning forward seem to improve the situation so
my guess is my body needs a aerodynamical reshape
Maybe a spoiler attached to my shoulders helps..

[Sidecarmikey]

Thanks for the info, mike

[Sidecarmikey]

Hello Nanko,
When you put the Pug engine into the frame did you mount it using the engine mount on the manifold side of the engine only, did you use a rubber mounting or fixed solid into frame, a photo and comments would be appreciated,
All the best and thanks for your help.

[Sidecarmikey]

Back again,
I've just found the photos of the Pug engine going into the new subframe, on a link from the 2007 Hamm Rally report that has answered my question, do you have an engine to frame connection at the top of the engine ? and can you confirm it is solid mounted ?
Ta

[Nanko]

Hi Mike

The engine is mounted without silentblocks.
The frame is bolted to the frame on:

top backsides cilinderhead
lower front sides near the oilsump
And front middle .

see http://pa0v.nl/dieselbike.html

[coachgeo]

in the pictures above the engine mounts to frame we can see show no silence blocks. Were these added after the pics or am I not seeing things right?

[Nanko]

coach , engine is mounted without silentblocks