Sunday, 23 June 2013

Ohlins Shock in

I got my shock back from Steve Jordan on Saturday, it took a bit longer than expected and a fair bit more £ because the previous owner had butchered the threads on the ride height adjuster.


I finally got to put things back the bike, it took two cans of brake cleaner to get the bike this "clean"

I had to trim down this bit of plastic to get it in
I also started taking the clutch apart, all the plates apart from one of the steels are almost new, at least that's saved me some money.

Friday, 7 June 2013

Change of Bike

I decided I wanted a bike that didn't need any engine tuning and much less custom work, just bodywork and race suss.  I just couldn't face crashing the CBR and having to do all that work again
Bike isnt to bad, 17,000 miles, but it's def been crashed a few times in it's life.
I've started the conversion process.
Someone has rewired the bike at some point

Started the strip down, the bike is really dirty. The previous owner decided to connect the crankcase breather to the pair valve, not to the airbox... errr right, Suzuki had no idea what they where doing when they designed that setup...

Forks off, the previous owner put tapered rollers in, but i still had to check.  I didn't need to replace them so my spare bearings will sit in a box.

I put my 20mm Ktech forks in, i've got some 25mm ones i'll try at some later date.

Tuesday, 21 August 2012

Brands GP




Photo by Dave Court

Brands GP was a great weekend, the new engine was faultless, the gearbox is nicer than my old one, not a single missed gear. It also felt slightly smoother and would rev more easily, it'd wheelie coming out of Surtees if i didnt get over the front!  The bike handled brilliantly, I'm really pleased I got Steve Jordan to set up the suspension.  I also finally stopped the slight pulsing through the brakes,  I swapped the discs put some 300mm ones on and cleaned the pads and discs again and that seems to have done the trick.  I really like the SBS pads, very similar to PF95's in feel.

All in a total success, my results weren't that great, I still wuss out on the starts, but on Sunday morning I managed to be one of the first out in practice and (a reduced pace for all) managed to run the 7th fastest time of the session.  I can't make Cadwell as i'm on holiday but will be aiming for a good run at Snetterton.

Monday, 16 July 2012

Dead Engine

After much messing about with the water pump before Snett I decided to check my oil level... it was low again.  I should have checked it sooner but it was only burning a very small amount in the previous race. I'm back to where I was this time last year, going from max to low in 15 minutes of ridding.  I'm not prepared to mess about with any more and will break it to sell.  I bought a 15,000 mile  F3 motor off ebay for £250:
I got the old engine out in an hour, the new one took me almost 2 days to get back in and running due to lots of little niggles and changes from the F2. I gave it a complete service, only 2 of the valve shims needed adjusting. I took it to the dyno at Steve Jordan's today so he could check it out and after some fiddling with the jets it makes 89bhp, only 4-5 less than my best run on the big bore kit.  Only 3 less than the last run with the F2 637cc.  Not bad for £250, taking my old one apart and putting it back together without changing anything wouldn't have cost much less than that.

So far I'm pretty pleased, now I need to check the oil pressure and hope the gearbox works as well at brands as on the dyno as that's the last unknown.
It's not all great news, my rev counter has stopped working at high RPM, though my Shift-lights seem to now work.  I'm a bit worried I broke the rev counter when I powered it up backwards.  My pump controller was also a disaster.  I simplified the code so it would run flat out as it kept crashing, but the pump still kept cutting out when I got above 64C..which was very weird as I wasn't even reading the temperature sender.  I'm not sure if I was getting interference or overheating the controller.  I'll switch back to the mechanical pump for Brands.

Sunday, 24 June 2012

Water pump and re-wire

After speaking to the makers of my borrowed shift lights I ended up re-wiring my bike so I can take a feed off of the CDI ignition signal.  I'm also going to try the same with the quick shifter to see if that gets it working at high RPM too. While I was at it I also added an extra power line for the water pump controller.

I made up a blank for the pump and have plumbed it all up, though at the moment I don't think the fairings will go on with the current pipe routing.


Wednesday, 13 June 2012

Oulton

The bike ran pretty well, the rider not so great.  I just couldn't get comfortable.  I don't think it helped being on a circuit where after 2 laps i'd wheelied more on a motorbike than in my previous 6 years of racing.

I didnt get dyno'd/weighed, but I did put the bike on the scales in the scruit bay which are pretty accurate, it came out at 171kg with 10 litres of fuel.  So i'm about 166kg with the minimum-ish amount of fuel i need for a post race dyno run and the 2 litres needed for fuel testing.  I need to see what it makes on the circuit dyno, but for now i'll just run with extra fuel in the tank till i'm sure.

Few things to resolve, it seemed to be burning a very small amount of oil, but it was hard to really tell. I still have the pulsing through the brakes and they did start to fade a little.  My shift lights and quick shifter don't work at high RPM, so i'm going to alter my harness and re-wire them.  I'm also adding power wires for the water pump controller.

On the plus side Steve Jordan has sorted my suspension and the rear tyre wear is now much better, though Oulton isnt as hard on tyres as Brands.

Thursday, 10 May 2012

Another trackday in the rain


Had another track day at Brands today, it dried out for two damp sessions then rained again all afternoon.  Now I have a few things to fix, the cheap fork seals I used seem to be leaking, not much but enough to need replacing, very annoying.

On the 2nd lap of the first session I had one of the biggest moments on a bike that didn’t end with a crash, I clipped the inside curb at Surtees (trying to go inside the square of messed up tarmac there).  The bike basically jumped out under me sideways and landed on the side of the rear wheel, flipped back the other way, slid for a bit then recovered.  The impact was so big it bent one of my chain adjusters, another thing that needs fixing.
I’m also a bit worried that this bent my calliper bracket as one of the bolts started rubbing on the rear disc (it only had about 0.5-1mm clearance before).

The front brakes also pulses slightly now when i'm gently on the brakes, when i use them hard it'd fine but if i rub them or as I ease off they start pulsing.  Maybe it's because I used them so much on the wet wheels first, on the plus side the SBS pads do seem much better than the stock ones I had in there before.

Anyway I still feel completely unprepared to go racing… I've never finished last in a race before, this could well happen an Oulton.