Supercharged CBR250 build

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gennyshovel
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Re: Supercharged CBR250 build

Post by gennyshovel »

Well,,bugga me !, I didn't know that,,thanks Greg.
The hollow feeling in my gut has subsided somewhat, after all, there's still sheetload of things I CAN do, like filing 4 mtrs of aluminium welds, finishing the gauge bizzo, rear guard,paint, front guard etc,,but,,I was hanging out for that test ride I promised myself,,,
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering
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Greg Watters
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Re: Supercharged CBR250 build

Post by Greg Watters »

Your not the only one hanging out for your test ride :D
grumm441
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Re: Supercharged CBR250 build

Post by grumm441 »

Your not the only one hanging out
You should try wearing longer pants
G
They make it
I make it work
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gennyshovel
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Joined: Tue Mar 29, 2005 10:10 am
Location: Broken Hill

Re: Supercharged CBR250 build

Post by gennyshovel »

Things have slowed down in the creation station, well, not really, just progress has slowed, effort has increased, why is is, components that fitted previously, don't fit now ? has the earth moved on its axis while I've been working on other bits ?
It HAS run, but not with the 38mm carb, that seems to make its own jet blocking dirt, so Iv'e bought a new 42mm methanol ready flatslide.
The test run has been delayed,,but,,it'll now be with the blower fitted.
Running a HUGE plenum / inlet manifold on such a little engine has created its own problems, bugger all manifold vacuum, which translates into poorly suspended fuel droplets, which in turn translates into no combustion, without an aerostart hit, battery voltage drops below after 3 seconds of winding over,,when it hits 10 volts,,the CDI stops sparking, so for the time being,,I need a battery just for the starting duties.
The blower will stir up the fuel / air mixture and force it in,,so it should be ok.
I'll be ready though :roll:
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering
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gennyshovel
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Re: Supercharged CBR250 build

Post by gennyshovel »

Although I'm having trouble remembering which day it is, there's no troubles coming from the creation station.
The blower is mounted for the last time, oil supply to the drive bushes is done and it's ready for the pulleys, idler and belt to be fitted.
The belt guard is tack welded, as is the housing for the guages.
Most of the wiring has been done, except for the tach , temp and oil pressure warning light.
The battery needs a strap & a charge and all these jobs should be done ready for the carb when it lands in Oz.
There's a temp postie fuel tank mounted way out front ready for the 1st ride,,,soon,,,very soon :D
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering
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RGV
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Re: Supercharged CBR250 build

Post by RGV »

Good to hear Tiny, hope all goes well for your maiden voyage- start up.

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF
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gennyshovel
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Re: Supercharged CBR250 build

Post by gennyshovel »

Silly me,,the square peg fitted better in the square hole than the round peg did,,but JUST.

Image

Buyer beware, when buying bike parts from a car speed shop, the hidden agenda is to covert you into a car nut, 'cos the Mikuni is fitted with HOLLEY jets ???

Image
Image
Image
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering
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gennyshovel
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Re: Supercharged CBR250 build

Post by gennyshovel »

double post deleted
Last edited by gennyshovel on Thu Jan 19, 2012 5:39 pm, edited 1 time in total.
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering
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ChrisACT
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Re: Supercharged CBR250 build

Post by ChrisACT »

That thing is glorious.

You mad bugger. :wink:
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AuotonomousRX
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Re: Supercharged CBR250 build

Post by AuotonomousRX »

Can't wait to hear it Howl!! :D

Pete
RGV#866
Still trying to decide if I am a procrastinator

Pete :?
DLRA #866
grumm441
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Re: Supercharged CBR250 build

Post by grumm441 »

I think i'de f off that foam filter and put a K&n on it
Flow better, don't rot and most importantly, they don't catch fire
G
They make it
I make it work
momec3
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Re: Supercharged CBR250 build

Post by momec3 »

I'll second that Grumm.

He Tiny, that things fully sic mate. :shock:
Will be interesting to hear how it sounds.
Always the best part when you build a one an'only.
The first fire up.

Chris
Chris
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gennyshovel
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Re:Tiny gets nominated for an OBE

Post by gennyshovel »

Well, I've nominated myself for an OBE (old bastard error) , and I'd better fess up, before someone dobs me in.

Way back in march '11 while looking into what'll do, and how things work in prep for the build, I peered into the blower and nutted out how these fangled gadgets work, well, how I THOUGHT they worked.

Well, the story goes like this I Mounted the blower so it spins the wrong way

:oops: :oops: :oops: :oops: :oops: :oops: :oops: :oops:

No blown cbr this year,,it sucks !
Tiny DLRA# 484
Postiebike Racing , created & funded by TwoBob Engineering
internetscooter
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Re: Supercharged CBR250 build

Post by internetscooter »

bugger! Know how that feels - we had the same issue with the flywheel. It started first kick but all it could do was idle... trailbike flywheels run the opposite side to Vespa's... well now you have more time to perfect it further!
Paul
---
DLRA #647
89.664 mph (aiming for 100mph+)
www.vespalabs.org
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RGV
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Re: Supercharged CBR250 build

Post by RGV »

That SUX Tiny. :roll:

Still 51 days to go and we all know how ya love a challenge.

Gear drive would reverse the direction? Suppose it cant be that easy.

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF
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