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December 1st, 2012, 05:01 PM   #41
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Re: Thumper Racing 610 kit.

Originally Posted by HusaBELGfs570
Yeah If I had the cash I would consider a 610 kit but then again the fact you have to bore the case out is a thing I do'nt like.
That thumper kit would be insane with alle the whistles and bells added to it (modified TB/Ported head/blueprint/performance cam/custom FI etc )
That thing would go +70bhp easily I think
Erm no there is no requirement for boring cases. And yes I'm on the quest for 70 hp but I think I will need to measure it by moroso hp or weight shifted, that is the best way for comparing apples to apples. I have 59 nm already and we all know that's what makes it go want more hp just turn the motor faster.

Originally Posted by maKe
Originally Posted by HusaBELGfs570
Can't wait to see what all those things result to on the dyno
I am also curious what the weight difference might be on a 590cc setup compared to stock maybe 25 extra cc's wil not make that much difference power wise but 18% more weight means more wear on the rest in the motor more fuel consumption less reliabilty
If the 590 kit is only 10% more weight it will rev quicker/smoother I think ,anyway I'm sticking with 565cc's for now but just nice to see these thing :P
I heard that the 590 was waste of money. 610 seems to be a good choice but it requires the cases to be overbored to fit the liner. Nothing a good machinist can't do but it's permanent mod then and stock cases are not cheap...

More rotating mass = more inertia and slower revving. Needs damn good balancing of the rotating assembly if you want to rev a 610 or 664 up to 10k rpm's, but then again does it need that much revs anymore because you get 20-50% more torque everywhere? It's kinda like changing a ferrari to tractor.
We are talking about a large capacity four stroke single cylinder the whole idea is big fat lazy power, if you want 10k rpm stay with a 450, the 565 has a great mid range but the 40cc extra fills the gap from idle to there, it's not like changing from a Ferrari to a tractor as it was never like a Ferrari to begin with, the idea that the extra weight makes it rev slower is theoretically true but we are also dealing now with a massively over square motor.
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December 1st, 2012, 05:24 PM   #42
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Re: Thumper Racing 610 kit.

Originally Posted by berglsmerg

We are talking about a large capacity four stroke single cylinder the whole idea is big fat lazy power, if you want 10k rpm stay with a 450, the 565 has a great mid range but the 40cc extra fills the gap from idle to there, it's not like changing from a Ferrari to a tractor as it was never like a Ferrari to begin with, the idea that the extra weight makes it rev slower is theoretically true but we are also dealing now with a massively over square motor.
Thats why I'm not too keen to up the displacement of the motor. But what I was told and I was quite shocked, when the tuner who supplied me the bigass TB and ECU told they ran 12000rpm rev limiter on Germany S2 bikes he built.

Max power was @ 11000rpm, so I don't really know what I'm going to be expecting soon.
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December 1st, 2012, 05:30 PM   #43
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Re: Thumper Racing 610 kit.

Originally Posted by maKe
Originally Posted by berglsmerg

We are talking about a large capacity four stroke single cylinder the whole idea is big fat lazy power, if you want 10k rpm stay with a 450, the 565 has a great mid range but the 40cc extra fills the gap from idle to there, it's not like changing from a Ferrari to a tractor as it was never like a Ferrari to begin with, the idea that the extra weight makes it rev slower is theoretically true but we are also dealing now with a massively over square motor.
Thats why I'm not too keen to up the displacement of the motor. But what I was told and I was quite shocked, when the tuner who supplied me the bigass TB and ECU told they ran 12000rpm rev limiter on Germany S2 bikes he built.

Max power was @ 11000rpm, so I don't really know what I'm going to be expecting soon.
thats outta control Id be waiting for the crank and rod to come flying thru the seat, I m guessing you trust that the factory has the crank balance perfect ?

This is exciting isnt it ? Race ya to 70 hp
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December 1st, 2012, 09:37 PM   #44
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Re: Thumper Racing 610 kit.

GOOD LUCK boys - when you guys get to 70hp, I'm going back to the dyno and working some more out of mine.

Post up the dyno sheets please.
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December 1st, 2012, 10:39 PM   #45
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Re: Thumper Racing 610 kit.

It s not thé same engine but i have dyno sheets on m'y gallery from my 710 Berg (2004 crankcase)
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December 2nd, 2012, 12:11 AM   #46
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Re: Thumper Racing 610 kit.

Originally Posted by contiman
It s not thé same engine but i have dyno sheets on m'y gallery from my 710 Berg (2004 crankcase)
Very nice, it must be a rocket ship that thing, how does it run ? I love the look of your bike too the graphics are cool and the twin silencer set up looks fat.

Originally Posted by Torque Monster
GOOD LUCK boys - when you guys get to 70hp, I'm going back to the dyno and working some more out of mine.

Post up the dyno sheets please.
I will hopefully by Friday. Just need to find a really happy dyno.
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December 2nd, 2012, 02:52 AM   #47
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Re: Thumper Racing 610 kit.

Originally Posted by berglsmerg

thats outta control Id be waiting for the crank and rod to come flying thru the seat, I m guessing you trust that the factory has the crank balance perfect ?

This is exciting isnt it ? Race ya to 70 hp
No way I'm going to turn the motor over to 12k with stock rod and unopened cases.
I'll be happy with 10500-11000 rev limit if it makes power up there.

That 12k sounds like carrillo rod and custom lightweight crank job, or just really nicely dynamic balanced stock rotating assembly. But then again how do you balance single cylinder crank to be smooth at every rpm from idle to over 10k?
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December 2nd, 2012, 11:24 AM   #48
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Re: Thumper Racing 610 kit.

True that, I looked into a motocomposites mmx rod a year ago and there was nothing available, when I looked into a Carrillo item i decided I didn't want to re mortgage my home

Looks like contiman has it sussed, check the max rpm on his 710 dyno run
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December 3rd, 2012, 09:15 PM   #49
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Re: Thumper Racing 610 kit.

Originally Posted by berglsmerg
Originally Posted by contiman
It s not thé same engine but i have dyno sheets on m'y gallery from my 710 Berg (2004 crankcase)
Very nice, it must be a rocket ship that thing, how does it run ? I love the look of your bike too the graphics are cool and the twin silencer set up looks fat.

Originally Posted by Torque Monster
GOOD LUCK boys - when you guys get to 70hp, I'm going back to the dyno and working some more out of mine.

Post up the dyno sheets please.
I will hopefully by Friday. Just need to find a really happy dyno.
Bugger not untill Tuesday next week now
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December 4th, 2012, 05:26 AM   #50
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Re: Thumper Racing 610 kit.

Originally Posted by berglsmerg
True that, I looked into a motocomposites mmx rod a year ago and there was nothing available, when I looked into a Carrillo item i decided I didn't want to re mortgage my home

Looks like contiman has it sussed, check the max rpm on his 710 dyno run
and with stock rod
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