Mitch's next 88 BMW R80TIC

[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.

[Mitch.W]

So thread dredge, ended up finishing this bike and wanting to build other things so flicked it on. 
 

recently I came across a cheap 1988 r80 TIC (ex Nz police bike) on market place in a sad condition, very little information but rego on hold for the last 12 years and he sent a video of it running so I decided to take a gamble. 

he had started to modify it yeas ago with a skateboard seat and other bits but never got any further. 
 

it came with a bunch of new parts, carb rebuild kits, new oils seals etc which was worrying. Also came with some other parts, aftermarket headlight, speedo etc 

[Mitch.W]

So, to get up to speed on this rig, it was bought to be a quick flip but now I'm attached soooo I'll keep it. 

my main goal was to get in a month or so of riding in in summer... that didn't happen.

slapped some more bog on the tank and gave it a prime and painted the underside black. 

 

Then had to decide on a colour, I ended up going with Toyota 033 which is a nice off white/eggshell colour, got it mixed up in a proper 2k aerosol can from RJP here in Christchurch, quite cool has a little button on the bottom to activate the hardner and only around $40 a big can.

paint ended up laying down half decent it just needs a bit of a wet sand but looks good enough for me. 
 

also managed to track down an air box cover from a guy in Wellington who use to cast them out of aluminim, luckily i got the last one as he is no longer producing them. 

before

 

after 

it tidys the motor up a bunch, also slapped a quick coat of paint on the rocker covers while I was there. 

[Mitch.W]

So next up was to get rid of the horrible seat. I would generally make a new subframe and fibreglass seat base and get the seat trimmed. 
 

I wanted to get this bike done quick and found out some people use a sr400 nitroheads sest that fits on the stock subframe and luckily some en in Nz had one they never used on a project.

I shaved all unused brackets off the bike, made a new number plate mount, mounted a nice billet tail light I had laying around and also some aliexpress led indicators for $15 they are billet and quite small/bright and mounted them up under the subframe. Slapped a coat of flat black on and mounted it up 

ended up getting a set of mid rise renthal tracker bars, whipped the fork legs off and chucked new seals in them as they were leaking.

I also wanted to mount the battery somewhere different, on my last bike I mounted it under the bike behind the sump, it looked clean but my exhaust plans for this bike didn't allow that location 

I went with a power road lifep04 and made up a quick bracket just under the seat. 
 

im terrible at taking progress photos but in the last photo you can see on the right I also have an ignition tucked up under the fuel tank pit of sight 

[Mitch.W]

With a bit more tidying up of the wiring, I mounted up the modern motorcycle company headlight and Speedo that came with the bike.

 I found an old motorcycle guard I had laying around and trimmed that down, drilled and tapped the fork brace for Acouple of mounting hole bought a polished aluminium guard off aliexpress for the rear which was actually good quality, welded acouple of tabs on and mounted that up.

went and took acouple of beauty shots of it.