Project "CBR125 Racer"

[CarlosCBR]

After much nagging from a mate, i have decided to scrape some money and a team together and take the plunge into "budget" racing.

I bought the "bike" from someone else in the race series at an absolute bargain price of £300 but it was an insurance write off and declared as scrap. Forks, wheels, frame and bars are all straight, just a couple of slightly bent radiator mounts and bent fins, nothing a mallet and a screwdriver cant fix.

This will be a long running project as i fight for time to get the bike race ready in time for the first round at Rowrah circuit in North Cumbria at the start of May, sounds like plenty of time but all i have been hearing is that the time will fly by so i had better get a shift on

This is how the bike turned up at my door:

https://i231.photobucket.com/albums/ee125/carlosamillios/100_1291.jpg

To say i was shocked would be about right. All the bike needs to be useable is a front brake caliper/lever/mount/hose, new chain and a rear sprocket.

The engine shall be here in a few weeks as Supersloaths team stole it as they broke their own! But i dont mind as the clutch in it went after one race so they are giving me a good one instead. Had the choice of " One we raced all season or one that hasnt been raced?". Ill have the un-raced one pelase! Also need a petrol cap and ignition key as Supersloaths mate drained the fuel and forgot it, d'oh!

This is how the bike stood after half an hour of swearing and cursing trying to put it together on my own:

https://i231.photobucket.com/albums/ee125/carlosamillios/100_1292.jpg

The road bike and the race bike, i will try my best not to pillage the road bike for spares, but that might be a different matter come race day.
https://i231.photobucket.com/albums/ee125/carlosamillios/100_1294.jpg


And how the bike stands currently:
https://i231.photobucket.com/albums/ee125/carlosamillios/100_1295.jpg


Will be grinding the rear subframe off along with all the unnecessary metal bits like fairing mounts and footpeg hanger mounts.

As soon as the engine turns up, these will be going in:
https://i231.photobucket.com/albums/ee125/carlosamillios/100_1303.jpg

Titanium valve springs and a 280 degree rotation 5.5mm lift race cam, will hopefully make a decentish increase in performance.



Need ideas on a colour scheme too but will focus on getting the bike ready to race first.

Will keep you all updated with any and all changes when i get round to it.

Any thoughts and tips would be greatly appreciated.

Thanks.

Carlos.
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[pepperami]

I like the look of this thread
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I am the sum total of my own existence, what went before makes me who I am now!

[Carvel]

I was unaware these were raced.

Awesome
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2002 Aprilia RSV1000R, Cbr600Fs, Mk1 B12, Vfr400 NC30...

Matt B: I can deal with crushed nuts to beat Ollie.

[CarlosCBR]

Here is a link to the site with all the regulations etc, dust off an old bike and get involved. Should be a right laugh.

https://fab-racing.co.uk/page3aa.html
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https://www.facebook.com/carl.simmonds.7

[hmmmnz]

sounds like the bucket racing series here in new zealand,
except more expensive and stricter rules
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the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Tim..]

[truslack]

I've got a full CBR125 (same colour ) to break if you want lots of spares? May be able to sort a deal out?
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Current: Suzuki RG 125 Gamma, Honda H100, Triumph Tiger 800XC, Suzuki SV650 (minitwin)

[ThoughtContro...]

[number_two]

sounds like a fun way to do some racing, wish i had my gpr50 still cos thats a cheap as chips way to have fun....

[CarlosCBR]

Will most likely be running 13t front sprocket and 57t rear as opposed to 15t front and 44 rear as all the racing is done on kart tracks. Downside is 1st gear lasts 3 metres, upside power wheelies in second
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https://www.youtube.com/watch?v=1OPv5mDPQ14

https://www.facebook.com/carl.simmonds.7

[CarlosCBR]

New exhaust on the way

https://i84.photobucket.com/albums/k28/donteatpeople/Mattphonepic2323.jpg

Also still have an Arrow system to do some back to back tests with, change of carb jets should see a nice little difference too.

BTW that silly baffle will be coming off but will keep it along with some rivets incase the bike fails noise testing.
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https://www.youtube.com/watch?v=1OPv5mDPQ14

https://www.facebook.com/carl.simmonds.7

[Blackwolf]

Ill be keeping an eye on thins, looks to be quite intresiting.

PM sent
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Current: Ducati Multistrada 1200s

[Sam_Y_93]

Looks interesting Wish I had of kept my R125 and done something similar
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Bikes Past: Yamaha Aerox (sold) Yamaha R125 (written off)
Bikes Current: Honda VFR 400 (awaiting restoration) Honda CB600f F-4
Theory passed July 21st Mod1 passed August 3rd Mod 2 passed 26th August

[P.]

[zene]

looking good mate any advances on the project??
are you planning re bore to 150cc??? or just tune the 125

[Blackwolf]

When you comming over Carlos! haha
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Current: Ducati Multistrada 1200s

[CarlosCBR]

@Zene, not yet as I'm still waiting to pick engine and a few more bits up. Max bore we are allowed is 128cc but I'm getting the head ported and gas flowed asap and high compression piston.

@Blackwolf having a bit of trouble finding a way down there at the min, I gave my team mate your number did he not phone you? Think he is down that way sometime so he said he would phone you.

Now the weather is getting colder, most if not all the work will be done in my living room, so if I make a thread in Dear Aunty BCF you know why lol.
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https://www.youtube.com/watch?v=1OPv5mDPQ14

https://www.facebook.com/carl.simmonds.7

[CarlosCBR]

Starting to make a little progress today, had the engine, carb, petrol cap and key delivered so thought i would crack on straight away. Also managed to get a very good second hand caliper, brake hose and master cylinder for a bargain price so fitted that too, now i have brakes!

https://i231.photobucket.com/albums/ee125/carlosamillios/Bike/100_1343.jpg

Didnt have anyone to help so fitted the engine on my own. Quite easy to do as i have found. Lift the rear of the engine and put the rear mount in first, then just pivot the engine on the rear mount to mount the next, then bolt the brackets on and stick in the last mount, easy peasy.

This is how it looks at this very moment.

https://i231.photobucket.com/albums/ee125/carlosamillios/Bike/100_1344.jpg
https://i231.photobucket.com/albums/ee125/carlosamillios/Bike/100_1345.jpg

To get it running i need to:

Bolt clutch in properly.
Fit new throttle cable.
Order pod air filter.
Fill engine oil.
Fit WRC exhaust.
Order and fit chain & sprockets.
Check everything is plumbed in/bolted on properly.

Should have that little lot done by mid November, then just need to strip down the loom, get some rearsets (or mend the stock ones), fit crash protection, number boards, oil/overflow catch tank, fit quick action throttle and probably loads of other little bits that i cant think of at the moment.
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https://www.youtube.com/watch?v=1OPv5mDPQ14

https://www.facebook.com/carl.simmonds.7

[zene]

finally an update got to appreciate this last sunny days before winter!!!

[CarlosCBR]

May not be any updates for a while, misses is moving out so cant afford to

Wheres that Dear Aunty BCF section again?
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https://www.youtube.com/watch?v=1OPv5mDPQ14

https://www.facebook.com/carl.simmonds.7

[Steve-D]

WRC exhaust?
As in weller racing corporation? My best mates dad is the one who makes those exhausts.
They aint to loud but there very deep.
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www.southwestbikers.com
Tristan The said 'Dunno what my pace will be like, fastish slow puncture on the rear and if I go too fast I risk my 'keys' falling out'

[qarka]

I had no idea there was a track at Rowrah! That's just down the road from me...
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Previous - Sinnis Apache - Honda Bros 400 - Yamaha SR500 - Honda Transalp - Kawasaki ZX-7R - Honda CB-1 - Honda 929 Fireblade - Honda NTV650 [b]Current[\b] Honda CB500

[CarlosCBR]

Yeah WRC exhaust Steve-d. Does he still make them? I may be interested on some more but since the site went down i havent been able to get hold of them.
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https://www.facebook.com/carl.simmonds.7

[Steve-D]

Yea the two of them fell out since pete was the one doing all the work making the exhausts and tony couldn't do any of it but got half the money they made.
Sure he could still knock them up, he's working on his own now still making exhausts and other fabrication work.
Will get his no and pm you.
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www.southwestbikers.com
Tristan The said 'Dunno what my pace will be like, fastish slow puncture on the rear and if I go too fast I risk my 'keys' falling out'

[Ol]