Mitch's 91 BMW R80

[Chunky_t]

What's the plan for baffles? There's a video of a guy with an old Honda CL77 on youtube with pipes like that and he used essentially a washer (with the hole in the middle still) that you could turn either vertical to baffle, and horizontal for the noise 

[Mitch.W]

Plan was to just drill a bunch of holes in some 31.8mm tube, then sleeve it with some 44.5mm tube and use fibreglass part to pack in between and hopefully that sucks up some noise, I have afew options on the go at the moment everything is pointing towards doing a 2-1

[Mitch.W]

decided i couldn't make the twin shotgun pipes work without alot of testing and i need the bike on the road sooner so i cut them up and bought more bends and a 2-1 

proceeded to chop them up, chop the rhs header up and spent an evening getting the headers equal length, went through afew designs and tacking then deciding i didn't like how it looked ended up with this and bought a purpose built moto stainless muffler have them on all my bikes and cant recommend them enough. my welding has deff gotten less tidier now i don't tig day in day out now, still fine just not super pretty and consistent like it was 1.5 years ago. also got acouple purpose built moto guards for the front and back to finish it off. 

will get a sound video but it sounds super rad nice and crisp and was worth the time to get the headers equal length. 

still needs black pinstripes on the tank to pull it all together but its about ready for me to take it gravel bash and drop it.

[anglia4]

Can I ask where you got the guards from?

I've been trying to figure out something similar for my latest project.

[Mitch.W]

Purpose built moto in aus, they are supppper nice 3mm thick ones and have doubling plates on the inside in mounting areas. Not easy to find non aliexpress guards 

[Mitch.W]

long time no update, basiclly finished building this thing then with about 200km's of testing it was time to hit the brass monkey with the boys, i had the only breakdown if the trip losing the nut which holds the shifter linkage on, easy fix. 

This thing tractored along great for something not made for gravel, only had 1 river crossing i had to push the bike through as the air filters were too low. i deff took it some places it shouldn't go and tested out the strength of the sump on some rocks but its awesome so fun to ride, the only downside is the seat is extremely uncomfy and the loud exhaust gets exhausting after 7+ hours or riding at once. 

the time has come to sell this thing and move on to the next build so if your keen ill do a os/ppsc discount. learnt some much building this but i suck at owning stuff.

Bit of a pic dump for you guys 10 days 3500k's and 3 dudes. 

[Kimjon]

Cool write up. Seems I followed this for the first half your build, then missed the completion.

Must have subliminally rubbed off on me, as I'm doing the cafe racer version of this build with the R100.