. . . So hands up who has ever seen me being bitter about being beaten racing? What an odd thing to say.Originally Posted by SS90
About the only time I get pissy is when people knock me off & it's not an honest racing incident.
No8 Wire Extraordinaire
. . . So hands up who has ever seen me being bitter about being beaten racing? What an odd thing to say.
About the only time I get pissy is when people knock me off & it's not an honest racing incident.
Don't you look at my accountant.
He's the only one I've got.
Bucket Racer/Crasher
Tall Poppies??? At bucket racing??? What a joke. There is ALWAYS someone who knows more, or who is faster, or better looking. Me for example.
Bucket Racer/Crasher
maybe not, eh!
Bucket Racer/Crasher
Some of us have done 5-600 dyno runs and experimented with nearly every aspect of engine tuning. Me, I've done that, and I've decided that I can't go any faster without professional help, which has also helped my understanding a lot as well and completely turned a few ideas on their heads. My mates have also done hundreds of dyno runs testing things and we share all the info gleaned from those runs. If anyone is interested they can always have a look inside my engines and in fact I don't mind posting photos of port configurations etc. I just want to see development being done and learning from the results.
I also firmly believe that a lot of what is produced by the main manufacturers is marketing bullshit and that not enough questions are asked. Which is where the average bucket racer comes in, especially guys like TZ350. Everything is questioned. Sometimes the answer is already known, sometimes not. Like , , , , How would a copper head work? Who really knows?
Registered User
You're just old and tall...
Forum whore
Great pictures of your new barrel Speedpro.
This is my new copper fin/head. The copper is 2mm thick. It has an aluminium combustion chamber like you suggested. There is an "O" ring grove in both the barrel and head to act as head gasket seals. This is probably the most practical version of the copper fin idea.
The effective copper fin area is 50% of the original alloy head fin area, a significant increase in engine cooling capacity. As copper has twice the thermal conductivity of aluminium, does this mean I have doubled the cooling capacity of the head?
My new head has the copper forming the squish area, In picture-1 I tried to mark it out with the black high-lighter so you can see where it is.
Picture-4, Thomas has made another copper head fin for one of the other bikes that has a conventionly domed piston and he was able to form the copper so it became a domed squish band. Seems to work OK.
I haven’t given up on the full copper head but solving the discoloration problem will have to wait. Racing is tomorrow and the bike is still all in bits. I will have to pull finger to get it ready. Another last minute rushagain.
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Forum whore
hows that going to fit in my rs framed bucket ??????
come now think smarter
see ya there sunday
"Instructions are just the manufacturers opinion on how to install it" Tim Taylor of "Tool Time"
Saying what we think gives us a wider conversational range than saying what we know. - Cullen Hightower
Forum whore
First points race of the year tomorrow. It's been pointed out to me HP won't win races and that I will go faster if I applied myself to learning to ride. Well they are right about that.
They say you go faster through a corner the further you look up the road. So instead off running around looking just ahead of my front wheel I will lift my head to look up the road as far as I can. lets see how that goes tomorrow.
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Forum whore
they just scared!
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Forum whore
That is truly frightening to hear. Hope to see you at Taupo again next year.
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Forum whore
Slightly over geared but more importantly was (dropping) not carrying enough corner speed. I know,corner speed is everything with a bucket!
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Forum whore
Temperature Measurements. The measurements aren't that accurate, by the time I got back in took my helmet and gloves off the temperatures would be different to the actual running temps. But they give some idea of whats going on.
GP125 with Copper Head/Fin
Head....................94 Degrees C.
Copper/Fin............85
Lowest Barrel/Fin..127
Lower copper fins.117, 108, 98
Crank-Case...........80
G/Box Oil..............68
GP125 in the same state of tune.
Head...................127 Degrees C.
Lowest Barrel/Fin...101
Crank-Case...........98
FXR 4-Stroke
Head...................139 Degrees C.
Lowest Barrel/Fin...129
Crank-Case............71
The motor felt and sounded very sharp all day, never faded and left the line like a rocket. I am looking forward to the next meeting and some lightning fast starts.
My copper head/fin looks pretty hot in the exhaust port area but the combustion chamber looks ok. The piston is running about as hot as it can go. The real test is to look underneath to check the colour of the piston crown underside.
I am absolutely flabbergasted at the temperature of the Lower barrel fin but it looks like the copper head/fin is doing some good. When you look at the barrel temperatures and think that the fresh mixture is sitting in there its easy to see my next problem is to reduce the temperature of the lower barrel fins and thereby reduce the ingoing temperature of the fresh mixture.
When you look at a water cooled cylinders you see that the incoming water generaly enters the cylinder under the exhaust port cooling it first.
Having looked at all those aeroplane cowels I now have some ideas for ducting.
I think that if I can reduce the heat uptake of the exhaust into the cylinder and get the lower cylinder fin to run at less than 100 then the head will run less than 80 and that would be very good as I will be able to tune it closer to the power output of a water cooled motor.
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Forum whore
Well, looking up the road was easier than I thought but leaving the turn in point and apex in my peripheral vision will take some getting used too. I was either turning in to late or to early and running up the ripple strip. Trying to learn something new slowed me down a bit but I will get a handle on it.
Tried getting the power on earlier and had a mighty front end judder/slide, this happened two or three times more so there is a handling problem/ riding position to sort too. But looking up the road was more comfortable than I thought possible it will just take some getting used too.
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Registered User
I find looking up the road helpful to go faster, but as you say, I can't help but look down at what I'm riding on. Either that or I miss the corner apex...
If you sort out a way the fix that, please, let me know. There's a couple of buggers down here I need to beat this year.
No8 Wire Extraordinaire
You are a greyhound following a mechanised rabbit that streaks around the corner, visualise that & let your eyes follow it. Especially hard corner at Mt wgtn is the infield left hander. Some while back I sat at the apex & practiced looking around for a few min so I didn’t get lost while riding it.
Sits in dark room . . You are Lightening, You are Speed (Cars movie)
Don't you look at my accountant.
He's the only one I've got.
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