Exhaust build for Peugeot ludix lc Stage6 Sport Pro 70cc MK2

[robwelding]

todays work -->












grtz

[2stroked]

Nice! About ready to order that metal now.

[ryan_ott]

It's hard to judge from the pictures but also check that you have enough lean angle for corners. It's looking great though. They are very timely to plan and make.

[robwelding]

Good point there Ryan, Im worried about that too, that stand is really a big pain to work around, all the ehausts I own
(Technigas Trek, Technigas Next R, Leovinci TT handmade and a Gianelli unknown) aren't taperd like this one is,
they use, eazy and cheap, 2 mandrel bends before the header starts.
Its even harder to judge because the stand legs are about 3 to 5 cm shorter then they should be.

This is a mid stand from 12inch wheel ludix cheapo model, when you put it on a 13inch model, the rear wheel doesnt lift of the ground. Also the waterpump unit isn't installed and neither is the CTV cover,
so its hard to get a good idea of the lean angle.

I got some more pictures where you can see better, but I'm not satisfied with how it is atm.
Also when glueing the printed parts together, the 1st diffusor piece with angle kinda melted,
so its actually hanging lower then it will be when I got the thing made in real life.
I have made the belly out of 2 pieces, with angle 11.25°, but didnt do the flip with the model...

Since Im broke for the rest of the month ill keep drawing and printing some more, with the model I got now, I've noticed there is some room for improvement still.

The header clears the stand now, based on this drawing and model I have a better idea where and howmuch the angle cuts can be for the next version, so will be tighter.
The shorter bends the header will get, the more the whole exhaust will move backwards, resulting in a tighter fit, wich will give me more leaning angle.
Anyways Picture time

[robwelding]

Desing nr8
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[robwelding]

Some renderings from the latest drawings.
prnt.sc/f6dzxb

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The header is printed out again, hopefully this wil be final version.
Onelast thing I would like to change, is the cut and flip belly section, I'd like to have that in one piece with the angles on the outsides, instead of the angle in the midde. Not sure how to that works tho, I see Roost does it with some of their exhaust. I was thinking to calculate the volume of the belly part, and using the diameter it has to be according to the fospipe program, and use those dimensions to create a belly part without a angle cut. That way the belly should have the same shape like the Roost exhausts.
Whats left to do now:
- A final fitment.
- Desing the mounting parts for silencer and ehaust to engine mounts.
- Unfold all the sheet metal segment drawings, transfer those to a DF/DWG file for the lazer cutter.
- Order the parts.
- Rolling the cones and welding them all together, using purge gas and Tig.
- Find/order/make the stinger pipe, weld that to the exhaust.
- Order tubes for making the flange tube and the exhaust outer flange tube.
- Go to my friends workshop and cut round grooves in the inner flange tube with lathe, to holt the Viton O-rings in place.
- Weld the inner flange tube to the flange.
- Order the springs for the flange.
- Order fitting Viton O-rings.
- Weld the little connection points for the springs onto the exhaust.
- Mount it under my scooter.
And cross my fingers it'l drive decent enough so that I'll feel good enough about the whole thing to make some more

grtz Rob

[stepthrutuner]

Fat pipes are sooo sexy.

[robwelding]

Today orderd this cone shaped iron mandrel to be machined at a local lathe/mill workshop.
Should cost me about 40€.
It wil come in handy for shaping the headercones perfectly round and tack welding the seem.
1.6° is supposed to be the ideal angle for header pipes,I read that in 2stroke ehaust tuning book.
Ill be using that angle for other headerpipes in future, so figured this would be a real handy tool to have.

Ill weld a piece of square bar to the 50mm end so I can clamp it in a vice.
Once the little cones are rolled with the sliprol they will still need some extra shaping.
I'll clamp em on the mandrel and after tacking the seem together, some gentle pursuading with a soft hammer,
the angled cones should have perfectly round edges.
The better the fitting/edges will be the better the welded seams will be.

Grtz Rob

[robwelding]

Friend of mine working as cnc operator agreed to makemy flange connectiontubes, orderd set of 5 pieces.
Final desing prototype










Hopefully sheet metal parts arrive next weeks!!

grtz Rob

[robwelding]

The DFX anbd DWG files are email to the lazer factory, Ill have to wait a few min cus they are on lunchbreak, buti will call them to get price for 1 , 5 or 10 pieces.
Ive added the DFX and DWG files if someone wants to cut sheet metal and make it yourself. You can download draftsight for free, print the shapes to paper, transer that to sheet metal, anyways, you get the picture.

www.dropbox.com/s/l1ghgv7voqk77q3/Plaatwer%20R16%20uitlaat%20Robin%20Michielssen.dxf?dl=0
www.dropbox.com/s/zvnnjdfx6zqocms/Plaatwer%20R16%20uitlaat%20Robin%20Michielssen.dwg?dl=0

Please keep in mind this is only the expansionchambers, there are still drawings coming from the flange connect system.,
the stinger pipe, and the silencer, and offc the suspension bracket.

More tocome Grtz Robbo

[robwelding]

Back from vacation and here you go guys, stainless parts in tha house !!!







gues who's back gues who's back gues who's back nanana !!!

[robwelding]

BTW i have 9 Exhausts for sale in coming time, Peugeot horizontal for sure and i think i can make em fit for minarelli too, have to mock up one to be sure tho

[ryan_ott]

Glad to see your back at this again.

[robwelding]

started rolling cones