Runner 180, kart airbox
Busa looking well!
rxs100 head badly modified to fit a rx135 barrel, may have a go at the rxs again soon.
oko pwk carb with filter on that doesn’t fit.
if the tyre was new…
test spin! nothing fell off anyway, didn’t open her up, needs more running in, the noise from that filter is unacceptable.
it rubbed, su-fuckin-prized?
think i’ll make it fit the bajaj.
So i’ve ordered a lamellar kart airbox from superkart.it, they had excellent dimensions. should be here in two weeks (back ordered)
http://www.superkart.it/index.php?main_page=document_general_info&cPath=149_176&products_id=1146
this one was also considered, bit its a little odd shaped.
http://www.superkart.it/index.php?main_page=document_general_info&cPath=149_176&products_id=1145
this one is suposed to be best but i can’t find any dimensions
http://www.superkart.it/index.php?main_page=product_info&products_id=1600&language=en
Runner ready? ish…
Anyone remember this?
Well it’s been put to a good use:
fecking awesome no?
then i had to ride this thing around a bit to check it’s all working after a rebuild. all good,some more gearbox oil and then have to do a bit more testing tomorrow to make sure it’s good for competition.
Got further along with the runner 180, glued in the autolube nipple, nipple it self is rescued from the old delorto. Last time i did this i glued it in with epoxy this time it’s only held in by superglue, we shall see how that turns out.
must protrude into the fuel/air stream.
Top end complete, never checked the whole barrel height after murphy engineering skimmed it, but it only took one 0.4 gasket to make the squish 0.9, the base gasket should have been 1.0 along with the corresponding hike in the ports. it’s still an improvement over standard just a small one.
cable length for the PWK is next hurdle. and i have to buy bbq paint.
Skipping the solid engine mounts for now, lets just get it started first.
Parts are here!
and well bloody wrapped they are.
PWK copy 24mm, look at the meat left over, could bore that out at a later date.
We now have three rs250’s dotted about the house…
Racing rs125, it’s actually so nice, stuff the rotax 257 in it and it would be a dream.
We have a new dog: Busa. he’s a whippet and in quite a bad state. Nothing 114 euros worth of pills and injection can’t sort.
The pictures don’t show much, he’s got mange, scabies, pressure sores (we hope!) and his tail looks like it might have to go. If your brave here are some before pics :
https://picasaweb.google.com/maireadomullane/MyNewDog# in a months time there should be some much better after pics.
In other news, i upgraded the laptop to ubuntu 11.04, holy shit it’s useless, what the hell is it these days with replacing simple text with unintelligible icons? i know it a beta and all that but i can’t stand it, didn’t mind when canonical first swapped the window management buttons around it was actually a good idea grouping more of your controls in the upper left of the screen, but this is jump in the wrong direction. So all my computers are finally debian now.
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!
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 🙂
Christmas break work.
This scene last year was a mini glacier.
Cleaned up the 32mm carbs, fitted needles which richend the top end and left in the 210 jets.
Bastard throttle cable is near impossible, but i got it
Found a better fuel filter and slotted that in too.
Knew this things are restricting the engine and since i found out where our stash of jets were hidden, they got the chop.
Now all i need is some free time, fuel and dry roads to take it for a test spin. And to figure out where the throttle cable is meant to be routed.
The runner needs some love, so i found it a mirror

And since i got 11.42litres/100km(25mpg!! i may have stolen some fuel at some point i forget) decided to change the clutch springs, the green polini ones are great for a quick get away but i have to use plenty of throttle to keep the bike doing 50k, hence the suspicion that their causeing the crap fuel economy. Also they fit like shit which is i hope the reason for the weird shoe wear pattern.
I was going fit the old ones but I’ve lost the feckers, so i fitted the malossi race ones, which were a much more reasonable poundage and better shaped. Even managed to get em in single handed this time.
Test ride revealed a tiny amount of bog off the line and only once at that, if it still drinks the fuel it must be the rollers, which will make me sad since the buzz from the acceleration is awesome.
Back to FAS tomorrow, but at least the summers on it’s way.
In before the snow!
Just got the runner out of storage literally hours before the snow hit hard. If i have to travel the runner will be much easier to pick up after a slide 🙂
