Why a runner blows up.
The root cause was the water pump not being turned any more, weather it was the bolts falling out of the oil pump causing the wheel not to engage the pump or the wheel wearing out then the bolts falling off the oil pump I’m not sure which happened first. Parts are on the way anyway from http://www.psntuning.co.uk/ should be here next week.
rotax 123 barrel on runner 180 cases? i wish
I Will get this thing rolling tomorrow, i must!
In anticipation of fiddling with the carb i’ve put back in the standard 15.5g (i think there that weight anyway) rollers, slower ratio changes make it easier to diagnose problems.
Welding rusty exhausts
is not fun, but first niki’s gpz500 has it head back on:
Onwards with fixing sarges rusty rebel 125 exhaust, first the link pipe was poked until i was sure we had solid metal
then the header was bashed about for the same reason, the inner skin was solid the blowing noise came from a small bleed hole that was meant to work inside the outer skin.
Big patch for a big hole.
Then i moved onto the gilera runners exhaust, decided to whip off the outer shield which is meant to stop a burnt leg. It’s useless extra unsprung weight.
Chopped off the mounting lug then smoothed the whole side apart from the dent, might cover the dent with some sort of welded art?
Tuning parts ought to be here for next tuesday, twiddling my thumbs looking for the bbq paint till then.
More runner shenanigans
shenanigans is in the spell checkers!?
Went for a short spin to kinsale yesterday, perfect coz it’s raining today 🙂
Piston is well fooked, even the gudgeon pin was damaged.
Barrel however has survived! if it don’t survive being ported and decked to within .02mm of it life, i’ll swap the whole top end for a malossi 172 then but for now it means i have more money in the budget for other toys 🙂
Like a 24mm PWK flatside carb (37% bigger then the original 20.5mm dellorto) along with a stage6 reed valve and stage6 manifold too. When they get here i’ll go hunting for a kart airbox to suit, Foam filters and rain are not a good mix.
I promise myself a PM5* pipe if i get a proper job!
Runner 180, strip down
Well first thing that didn’t help the engine survive was a seeming lack of water anywhere in the cooling system. Most of it seems to have escaped into the exhaust.
BEGIN!
That can’t have helped.
That can’t have helped.
THAT CAN NOT HAVE HELPED AT ALL NOT ONE BIT!!!!
Skull cap off and it looks like the bodged o-ring survived fine. However the compression o-ring didn’t, letting all the water out into the exhaust and ruining the ability of the two-stroke oil to lubricate.
Plated barrel now fecked, might be able to hone off the melted aluminium, will definitely do some porting. Don’t want to have to do this again so if the barrel doesn’t come up 100% it goes on the spare pile.
(does my hand look fat in that pic?)
New piston for sure, fair bit of water in the crank too but it seems to have escaped proper damage.
I have a theory about the missing exhaust bolt and the oil pump falling off, it’s usually the case when things start to vibrate off that the freq is too high (or not high enough if your pedantic) and the best way to lower the freq is by attaching a weight. So to kill two birds with one stone i’m gonna remove that gigantic rubber block and just mount the engine properly to the frame, that ought to sort the flipping handling and the bolts falling out, at least in the engine anyway, rest of the bike may suffer…
A plan is needed, have a three point one:
1: it will have an autolube system.
2:it will have a rain proof airbox/filter.
3:it will have a nice crisp exhaust note.
4: it’ll be faster then steve’s!
Hard Work Sucks!
Back breaking sweating under the sun hauling machines about the place (both cb650’s are frag now)
but i got there in the end.
Space for the start of my new empire! (aka the new shed)
think i might repair the rg125’s rusty tank problem with this mito tank, can’t think of anything else to do with it.
A day at the drags
steve was bringing his runner so that meant i had to fix mine, shortened up a fuel line and it was leak free and good to go
Steve just used zip ties.
then to alex’s place (he doesn’t live in a cage).
then it all went wrong, it was steves fault you see, we were flatout to cobh flatout back from cobh and some more flatout ness just for the heck of it pas douglas.
I missed that alright, seems that dodgey O-ring in the skull cap let go again (it was quite a hot day, really) i missed the temperature shooting up and then it heat seized. 🙁
so a quick  spin on the back of ronans bandit and it was off with the cbr again, the fall back bike.
Made it too the drag race any way and got a few pics, this pink busa was up at our place a while back didn’t know it was gonna be racing!
nice set of puppys there girl!
this bike broke the 200mph barrier in the uk and ireland back in 70’s (i think) ted and mum got up at the crack of dawn to see it do it .
quite a machine.
must dash, gotta sort a shopping list for a faster runner 🙂
Mounds of stuff
Teds 3rd place trophy. no idea what going on with that piston.
The shed improves a it more.
The back garden however is massively improved.
Haven’t seen this side of the garage since it was built.
This is where my container is going, which means, yep, lots of rubbish moving about ;groan; will do it after the drag races on sunday.
GOOD NEWS!! i got the job at markeire, doing r&d making a new heat pump, most importantly it’s only 2 days a week! perfect, it is now ON, to the shed my minions!
Today was a good day.
Turned up at the shed today to find ted is now busy with plenty of interesting work. Slightly confused at  first, why the hell is seans rs250 bike painted blue?
cable operated disc brake, eep!
I MUST get a test ride off this elsie
I promise not to do any wheelies!
Anyway to work, remember the cb1100r in the shed? owner of it is painting the tank for nothing more then cost 🙂
the tank will match the chinese plastic i bought, hopefully we can save the nice embossed S sticker.
busa fuel pump and sender
poped it back in so i can remember what way it goes back together 🙂 once the busa is gone i can afford nice things like tdr250 expansion pipes..
Shot of the size of my side of shed now
the light comes in here, no the door doesn’t actually work.
Borrowed a honda 300 and took a slow ride down to nab’s, an excellent end to the day.
Little updates
Went to sarges wedding, only took this photo cause the left hand painting annoyed me..
Finally decided to clean the carbs on the cbr
went quite well was expecting them to be utter bastards to put back on, but no they just poped on.
Was gonna mod the airbox then, but discovered i don’t have have two exactly the same ones to mod, not even certain what year cbr use’s that lid..
Garage all chopped up now.
Chunk taken out of my side 🙁 but i am getting a 20″x12″ container out the back 🙂
spotted this fzr600 at the vjmc meet on sunday, feeling the hankering for a new bike god help me.
