Benelli TnT

pistolclass · 08-07-2017, 10:06 PM

Looks like china bikes will be more mainstream.

http://www.motorcycle.com/manufactur...view-html.html

Biker_Andy · 08-07-2017, 10:32 PM

Interesting little bike with impressive looks

BlackBike · 08-08-2017, 02:05 AM

Nice find pistol
Honda CBR300

Or twin benelli...i like its looks over the crotch rocket style Honda

BlackBike · 08-08-2017, 10:48 AM

http://af1racingaustin.com/benelli/b...i-tnt300-8ebj6

2017 Benelli TNT 300 (Black)

3,499.00 3,999.00
2017 Benelli TNT 300 (Black)

ON SALE NOW

$500 OFF PRICE OUT THE DOOR IS $4327 including all taxes

Sullybiker · 08-10-2017, 09:56 PM

They're apparently pretty nice bikes. Seen a few YouTube reviews on the 300 already.

Curious at the 0-100km/h time, it seems a bit honest; the Ninja 300 has slightly less power but clocks a quicker time, if I recall. I wonder why a bike of similar weight and power (a couple more horses) is a little slower; geared longer, perhaps.

It has pretty big tyres for its size.

ChopperCharles · 10-08-2019, 02:41 PM

I took a test ride and really loved it. The sound it makes is awesome, and it's a full-sized motorcycle with a top speed around 100mph. It easily cruises at 80 and still has plenty of beans for passing.

Charles.

bogieboy · 10-08-2019, 03:59 PM

i dont get how they get 38 hp out of the little inline twin 300, but we can only get about 15 out of a 200-250cc single.... wheres the massive power loss? is there taht much room for improvement on the small cg and cb???

**JerryHawk250** · 10-08-2019, 04:09 PM

Quote:

Originally Posted by bogieboy

i dont get how they get 38 hp out of the little inline twin 300, but we can only get about 15 out of a 200-250cc single.... wheres the massive power loss? is there taht much room for improvement on the small cg and cb???

Liquid cooled, higher compression, OHC,4 valves per cylinder, Red lines @ about 12,000 rpm.

ChopperCharles · 10-08-2019, 05:54 PM

CG and CB motors will never make that kind of power. 2-valve pushrod motor is a completely different class. Even the Virago V-twin motor only pushes out 19hp out of a 250cc twin. It's a 2-valve-per-cylinder single overhead cam aircooled motor.

Going 4-valve heads is a way to get more power.
Tighter tolerances and higher compression is a way to get more power. But this generally requires water cooling. Spinning the motor faster is a way to get more power. But pushrods can't go that fast, so overhead cams are required. Timing the exhaust and intake valves more precisely is a way to get more power. And that means independent intake and exhaust cams.

All of this adds up to make a far more complex motor than the CG mill. But also a far more powerful motor. And modern machining and metallurgy allows it to still be completely reliable.

Charles.

bogieboy · 10-09-2019, 09:08 AM

Quote:

Originally Posted by ChopperCharles

CG and CB motors will never make that kind of power. 2-valve pushrod motor is a completely different class. Even the Virago V-twin motor only pushes out 19hp out of a 250cc twin. It's a 2-valve-per-cylinder single overhead cam aircooled motor.

Going 4-valve heads is a way to get more power.
Tighter tolerances and higher compression is a way to get more power. But this generally requires water cooling. Spinning the motor faster is a way to get more power. But pushrods can't go that fast, so overhead cams are required. Timing the exhaust and intake valves more precisely is a way to get more power. And that means independent intake and exhaust cams.

All of this adds up to make a far more complex motor than the CG mill. But also a far more powerful motor. And modern machining and metallurgy allows it to still be completely reliable.

Charles.

pushrods can go that fast with the proper valve springs and cam profile...LOL my little 110cc pocket bike that got me started down the chinese path got some serious upgrades, and could do 67 mph GPS confirmed on flat ground, mikuni vm26, and a high lift cam, would pull hard all the way to 12,000 rpm...air cooled, 2v head... however that was OHC... but still impressive for a 110, considering my 200cc roketa pushrod motor can only achieve 62-65 on flat ground...

that thing was a wicked little bike...LOL not the most reliable though...

ChopperCharles · 10-10-2019, 12:45 AM

Yes, sure, you can build a pushrod motor that can go faster. You build out the other areas to their maximum, and take the hit on RPM. But all things being equal, if you went OHC of some sort you'd be able to spin that same motor faster and make more power.

Pushrods just have too much mass to allow the engine to spin fast. Unless you can make them really, really short, you're looking at 7000-8000 rpm, max. The TNT300 redlines at 13,000 rpm.

Charles.

bogieboy · 10-10-2019, 08:58 AM

Quote:

Originally Posted by ChopperCharles

Yes, sure, you can build a pushrod motor that can go faster. You build out the other areas to their maximum, and take the hit on RPM. But all things being equal, if you went OHC of some sort you'd be able to spin that same motor faster and make more power.

Pushrods just have too much mass to allow the engine to spin fast. Unless you can make them really, really short, you're looking at 7000-8000 rpm, max. The TNT300 redlines at 13,000 rpm.

Charles.

nascar runs pushrod motors to 10,000rpm

and makes 850hp out of 358 cubic inches...

using that power to displacement number, a cg200 should theoretically be able to make 28hp, and a 250 theoretically could make 35...

wouldnt that be nice..LOL anyone got any ties to nascar engine builders? see what they could come up with for a china bike...LOL

1cylinderwonder · 10-10-2019, 12:04 PM

Quote:

Originally Posted by bogieboy

nascar runs pushrod motors to 10,000rpm

and makes 850hp out of 358 cubic inches...

using that power to displacement number, a cg200 should theoretically be able to make 28hp, and a 250 theoretically could make 35...

You’ll also be lucky if your cg200 and cg250 can run farther than 500 miles, like most of the NASCAR vehicles are lucky to do!

with their high horsepower and low reliability!

bogieboy · 10-10-2019, 12:25 PM

Quote:

Originally Posted by 1cylinderwonder

You’ll also be lucky if your cg200 and cg250 can run farther than 500 miles, like most of the NASCAR vehicles are lucky to do!

with their high horsepower and low reliability!

would be a fun 500 mi though

my friggin bike hasnt left my yard in 2 years....

ChopperCharles · 10-10-2019, 05:46 PM

Quote:

Originally Posted by bogieboy

nascar runs pushrod motors to 10,000rpm

and makes 850hp out of 358 cubic inches...

using that power to displacement number, a cg200 should theoretically be able to make 28hp, and a 250 theoretically could make 35...

wouldnt that be nice..LOL anyone got any ties to nascar engine builders? see what they could come up with for a china bike...LOL

Yes, it's possible. NASCAR did this by moving the camshaft as high in the motor as it can go, making the pushrod lengths very short. With less mass to move, the engine can spin faster. Using exotic, expensive, ultra-light materials also helps with this. With deep pockets you can do much. But the only reason NASCAR does this is because the rules say you have to use pushrod engines. If they continued to pour money into motor design without the pushrod restriction, I guarantee they'd all be running dual overhead cams. You can just make more power that way.

Charles

08-07-2017, 10:06 PM	#1
pistolclass Join Date: Oct 2015 Location: connecticut Posts: 980	Benelli TnT Looks like china bikes will be more mainstream. http://www.motorcycle.com/manufactur...view-html.html
	1

08-08-2017, 02:05 AM	#3
BlackBike Join Date: Feb 2016 Location: George West, Texas Posts: 4,097	Nice! Nice find pistol Honda CBR300 Or twin benelli...i like its looks over the crotch rocket style Honda __________________ ***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
	0

08-08-2017, 10:48 AM	#4
BlackBike Join Date: Feb 2016 Location: George West, Texas Posts: 4,097	$4327 out the door http://af1racingaustin.com/benelli/b...i-tnt300-8ebj6 2017 Benelli TNT 300 (Black) 3,499.00 3,999.00 2017 Benelli TNT 300 (Black) ON SALE NOW $500 OFF PRICE OUT THE DOOR IS $4327 including all taxes __________________ ***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
	0

08-07-2017, 10:32 PM	#2
Biker_Andy Join Date: Oct 2016 Posts: 347	Interesting little bike with impressive looks
	0

08-10-2017, 09:56 PM	#5
Sullybiker Join Date: Dec 2016 Location: Western PA Posts: 363	They're apparently pretty nice bikes. Seen a few YouTube reviews on the 300 already. Curious at the 0-100km/h time, it seems a bit honest; the Ninja 300 has slightly less power but clocks a quicker time, if I recall. I wonder why a bike of similar weight and power (a couple more horses) is a little slower; geared longer, perhaps. It has pretty big tyres for its size.
	0

10-08-2019, 02:41 PM	#6
ChopperCharles Join Date: Feb 2018 Location: RDU, NC Posts: 683	I took a test ride and really loved it. The sound it makes is awesome, and it's a full-sized motorcycle with a top speed around 100mph. It easily cruises at 80 and still has plenty of beans for passing. Charles.
	3

10-08-2019, 03:59 PM	#7
bogieboy Join Date: May 2013 Location: finger lakes NY Posts: 2,062	i dont get how they get 38 hp out of the little inline twin 300, but we can only get about 15 out of a 200-250cc single.... wheres the massive power loss? is there taht much room for improvement on the small cg and cb???
	1

10-08-2019, 05:54 PM	#9
ChopperCharles Join Date: Feb 2018 Location: RDU, NC Posts: 683	CG and CB motors will never make that kind of power. 2-valve pushrod motor is a completely different class. Even the Virago V-twin motor only pushes out 19hp out of a 250cc twin. It's a 2-valve-per-cylinder single overhead cam aircooled motor. Going 4-valve heads is a way to get more power. Tighter tolerances and higher compression is a way to get more power. But this generally requires water cooling. Spinning the motor faster is a way to get more power. But pushrods can't go that fast, so overhead cams are required. Timing the exhaust and intake valves more precisely is a way to get more power. And that means independent intake and exhaust cams. All of this adds up to make a far more complex motor than the CG mill. But also a far more powerful motor. And modern machining and metallurgy allows it to still be completely reliable. Charles.
	3

10-10-2019, 12:45 AM	#11
ChopperCharles Join Date: Feb 2018 Location: RDU, NC Posts: 683	Yes, sure, you can build a pushrod motor that can go faster. You build out the other areas to their maximum, and take the hit on RPM. But all things being equal, if you went OHC of some sort you'd be able to spin that same motor faster and make more power. Pushrods just have too much mass to allow the engine to spin fast. Unless you can make them really, really short, you're looking at 7000-8000 rpm, max. The TNT300 redlines at 13,000 rpm. Charles.
	0