CBX Racing

CBXs, new bikes, old bikes, cars, trucks, general chat, off topic, this is the place to post it.

Re: CBX Racing

Postby Warwick Biggs » Sat Apr 13, 2019 7:33 am

This shows Roly's wire thingy's on the outside bellmouths so you don't knock them with your knee. They are uncomfortabe when you are moving around a lot and your knee hits them. It also shows the cable ties that I use to support the CR's to take some of the stress off the rubbers.
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Re: CBX Racing

Postby Warwick Biggs » Sat Apr 13, 2019 7:36 am

This shows how I have raised the seat height for the period correct Rickman seat and ducktail. You can also see the dual battery switch that allows me to run both a light weight starter and the 3 coils on total loss.
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Re: CBX Racing

Postby Warwick Biggs » Sat Apr 13, 2019 7:47 am

Here we have the 17" VTR wheel and slightly cut down VTR rotors. The holes had to be filled with alloy putty for the correct period look. It took me a long time to find sintered HH pads for the stock twin piston brakes. I had to use spacers because of the thinner rotors but otherwise it was a fairly straight forward modification. Most of the other punters in my class run single piston replica Brembos and I like to think Honda's stock floaters are suerior in every way (one of the CBX's secret weapons is great brakes). The other advantage of this front end is that its' incredibly light compared to the vented rotors and heavy comstars and almost as heavy 18" boomerangs. I have to be careful launching off the line as the front comes up very quickly! I should add that the start of any race is the most dangerous part when you have a bunch of bikes largely out of control on their back wheels with no steering and in close formation.
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Re: CBX Racing

Postby Warwick Biggs » Sat Apr 13, 2019 8:08 am

Finally, this is one of the ride height attachments for the Wilbers shock. To recap, I extended the internal shaft so that the basic length of the shock was the same as my old shock with its extension wound out to the max but I then have a choice of 2 new extenders. This is the longer 10 mm one. The shorter one is on the bike and gives me another 6-7 mm which with the rising rate rear end gives me about 19 mm if I wind it all the way out.

I'm hoping that I won't need this longer one but you will appreciate that this gives me a huge range to play with. Now, if I can convince a few other racers to stump up $800 a piece to have their bikes Computracked I will be able to convince Nigel to bring his metrology to me rather than the 3,00 klm vice versa and that will tell me exactly what I need to do. In the meantime its' suck it and see.

I haven't started the bike yet and its always a bit fraught. Sometimes the floats stick when you are starting from dry and it pisses fuel everywhere. Also you can't leave it sitting for long with fuel in it as the additives tend to block the very fine CR jets and the fuel itself starts to 'go off'. So I might get it out to the track for practice next Friday if the gods aren't still at war with me. Hopefully, it will give a few of those Bears a hurry up if we do get there.

I must remember that the new throttle is much quicker than my old quick action throttle and the matching tapered inlet tracts will affect it too. It could be a whole new bike with all these changes. Better or worse, we will have to wait and see....
R.
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Re: CBX Racing

Postby Warwick Biggs » Mon Apr 15, 2019 10:15 pm

All put together again.
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Re: CBX Racing

Postby Warwick Biggs » Mon Apr 15, 2019 10:16 pm

Exhaust side.
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Re: CBX Racing

Postby Rick Pope » Tue Apr 16, 2019 7:35 am

Why is there silicone oozing from the valve cover? Nasty stuff. A good gasket is all that's needed.
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Either garage is too small or we have too many bikes. Or Momma's car needs to go outside.
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Re: CBX Racing

Postby Warwick Biggs » Tue Apr 16, 2019 6:26 pm

The widest point of the motor is the cam cover and while the CSG Moto engine sliders are great, the cam cover did sustain a heavy whack when we hit the deck at the '18 Island Classic, Rick. The consequent slight distortion in the casting was beyond the somewhat stiff (read oldish) rubber gasket to accommodate. That is one answer to something that offends good mechanics. Another answer for the more widespread use of silicone is that with a racer it comes apart fairly regularly and making up new gaskets is a tedious and time consuming business.

So, put it down to laziness/impatience/slackness. And yes, I know bits can come adrift and block crucial oil passages. Rick, do you want to volunteer to be my spannerman? I'm not a mechanic's bootlace and belong to the side of the road school of necessity being the mother of invention (as is impoverishment).

Meantime, the lump is now running and if our current hot dry weather continues, we will do some testing at the track on Friday. I also have to compliment Venhill's after sales back up of their universal 888 QA throttle kit.
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Re: CBX Racing

Postby Rick Pope » Wed Apr 17, 2019 7:41 am

I mentioned the silicone because I had a costly experience caused by over zealous application. I had an oil pan leak on a large truck, and took it to a local shop for re-sealing. Rather than doing it properly, they dropped the pan a couple inches and forced silicone in the gap, then tightened it back up. A couple years later, that engine died a vilent death when a rod went through the block. Upon inspection, the pick-up screen was plugged with silicone goo.......
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Re: CBX Racing

Postby Warwick Biggs » Thu Apr 18, 2019 3:12 am

You have just added another task to my list Rick. Check the pickup filter next time TIMS ' sump comes off.
R.
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