R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 05-03-2010, 03:41 PM   #3586
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 5,602
Send a message via ICQ to Roelof
Default

Quote:
Originally Posted by Ballistik Mods View Post
This a great subject .
The original idea was to lighten the crank and silicone putty was a good way of filling the hole left from drilling.Manufacturers noticed a positive effect in shaping the silicone.
If you want to lighten a shaft for less mass rotation you must take it from the outside and not from the center....
Thats why MAX is still using 14mm crankshafts and not the 14.5mm

Quote:
Originally Posted by Ballistik Mods View Post
The use of putty is not to save on tooling wear. shaping the crank in its original form rather than using silicone is pointless as the original objective was to lighten the crank in aid of quicker spooling .
Actually it does save time and tools to create such a shape directly in the crankshaft. Producing in large numbers (60.000 a year regarding their promo movie) a short machine time and less maintenance and recalibration is wanted
__________________
Speed is only fiction but a 130+km/h MRS4 is for real.
Roelof is offline   Reply With Quote
Old 05-03-2010, 04:19 PM   #3587
Tech Fanatic
 
Alex Siddique's Avatar
 
Join Date: Nov 2007
Location: Central Coast , NSW Australia
Posts: 872
Trader Rating: 30 (97%+)
Send a message via MSN to Alex Siddique
Default

Quote:
Originally Posted by Roelof View Post
If you want to lighten a shaft for less mass rotation you must take it from the outside and not from the center....
Thats why MAX is still using 14mm crankshafts and not the 14.5mm



Actually it does save time and tools to create such a shape directly in the crankshaft. Producing in large numbers (60.000 a year regarding their promo movie) a short machine time and less maintenance and recalibration is wanted
good point
__________________
No Fucker's Taking my money O/s OR local :) :)
Alex Siddique is offline   Reply With Quote
Old 05-03-2010, 06:25 PM   #3588
Tech Adept
 
Ballistik Mods's Avatar
 
Join Date: Feb 2010
Location: NSW AUSTRALIA
Posts: 200
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Roelof View Post
If you want to lighten a shaft for less mass rotation you must take it from the outside and not from the center....
Thats why MAX is still using 14mm crankshafts and not the 14.5mm



Actually it does save time and tools to create such a shape directly in the crankshaft. Producing in large numbers (60.000 a year regarding their promo movie) a short machine time and less maintenance and recalibration is wanted
Wow hang on rotating mass is weight transfered from the centre out they mill the centre because it has a similar effect it lightens the crank which in turn reduces rotating mass.

As far as saving tooling. how is that possible it requires more programing additional cutters and time aslo machine servicing to cut the shape direrectly
calibration is required for both methods .

Max power used the 14mm crank because they required more mass on the delivery end so that there efforts to balance the crank was easier to achieve .
Ballistik Mods is offline   Reply With Quote
Old 05-03-2010, 06:34 PM   #3589
Tech Fanatic
 
Alex Siddique's Avatar
 
Join Date: Nov 2007
Location: Central Coast , NSW Australia
Posts: 872
Trader Rating: 30 (97%+)
Send a message via MSN to Alex Siddique
Default

An object traveling in a circle behaves as if it is experiencing an outward force. This force, known as the centrifugal force, depends on the mass of the object, the speed of rotation, and the distance from the center. The more massive the outer object, the greater the force; the greater the speed of the object, the greater the force; and the greater the distance from the center, the greater the force.
__________________
No Fucker's Taking my money O/s OR local :) :)
Alex Siddique is offline   Reply With Quote
Old 05-03-2010, 06:35 PM   #3590
Tech Adept
 
Ballistik Mods's Avatar
 
Join Date: Feb 2010
Location: NSW AUSTRALIA
Posts: 200
Trader Rating: 1 (100%+)
Default

As i said lightening the crank reduces overall weight and reduces mass.
Newtons law of physics lighter the action lighter the reaction

Last edited by Ballistik Mods; 05-03-2010 at 06:59 PM.
Ballistik Mods is offline   Reply With Quote
Old 05-03-2010, 07:37 PM   #3591
Tech Fanatic
 
Alex Siddique's Avatar
 
Join Date: Nov 2007
Location: Central Coast , NSW Australia
Posts: 872
Trader Rating: 30 (97%+)
Send a message via MSN to Alex Siddique
Default

Quote:
Originally Posted by Ballistik Mods View Post
As i said lightening the crank reduces overall weight and reduces mass.
Newtons law of physics lighter the action lighter the reaction
which one of newwy laws is that. Cos lightening the crank actually reduces the mass which hence reduces the weight .. ... and newton never wrote any laws of physic he wrote laws of motion .
__________________
No Fucker's Taking my money O/s OR local :) :)
Alex Siddique is offline   Reply With Quote
Old 05-03-2010, 07:41 PM   #3592
Tech Fanatic
 
Alex Siddique's Avatar
 
Join Date: Nov 2007
Location: Central Coast , NSW Australia
Posts: 872
Trader Rating: 30 (97%+)
Send a message via MSN to Alex Siddique
Default

i might not know about engines but i do know my physic's
__________________
No Fucker's Taking my money O/s OR local :) :)
Alex Siddique is offline   Reply With Quote
Old 05-03-2010, 09:22 PM   #3593
Tech Adept
 
Ballistik Mods's Avatar
 
Join Date: Feb 2010
Location: NSW AUSTRALIA
Posts: 200
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Alex Siddique View Post
which one of newwy laws is that. Cos lightening the crank actually reduces the mass which hence reduces the weight .. ... and newton never wrote any laws of physic he wrote laws of motion .
Quote:
Originally Posted by Alex Siddique View Post
i might not know about engines but i do know my physic's
newtons law of physics britanica encyclopedia smart arse:lol
Ballistik Mods is offline   Reply With Quote
Old 05-03-2010, 09:42 PM   #3594
Tech Adept
 
Ballistik Mods's Avatar
 
Join Date: Feb 2010
Location: NSW AUSTRALIA
Posts: 200
Trader Rating: 1 (100%+)
Default newtons law

Newton used physics and motion to create the three laws.
Reduce weight reduces mass ,reduce mass reduces weight.mass is the total matter. reducing either reduces both
Ballistik Mods is offline   Reply With Quote
Old 05-03-2010, 09:42 PM   #3595
Tech Master
 
cdelong's Avatar
 
Join Date: Jul 2004
Location: The Sunshine State
Posts: 1,805
Trader Rating: 12 (100%+)
Default

I don't really care about ramp vs. no ramp.... these engines make more power than 95% of drivers can use. My point is that if the silicon comes loose while running- kiss your engine bye bye....it will hose the p/s and likely the rear bearing at least.
__________________
KYOSHO EVOLVA
35PLUS21
FUTABA 3PKS/KO PROPO
BYRON'S FUEL/TWISTER TIRES
cdelong is offline   Reply With Quote
Old 05-03-2010, 09:51 PM   #3596
Tech Adept
 
Ballistik Mods's Avatar
 
Join Date: Feb 2010
Location: NSW AUSTRALIA
Posts: 200
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by cdelong View Post
I don't really care about ramp vs. no ramp.... these engines make more power than 95% of drivers can use. My point is that if the silicon comes loose while running- kiss your engine bye bye....it will hose the p/s and likely the rear bearing at least.
I agree with you there ive repaired engines where thats happened but if properly maintained it shouldnt happen.
Ballistik Mods is offline   Reply With Quote
Old 05-04-2010, 08:00 AM   #3597
Tech Initiate
 
Join Date: Nov 2009
Posts: 38
Default

lets end all this speculation and theorys on why Novarossi use this silicon in the shafts. To quote them on their web site, The inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration. Go to Novarossi site click on Nova Flash engine then click features and this is under crankshaft. Regards Martin.
martinh is offline   Reply With Quote
Old 05-04-2010, 10:48 AM   #3598
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 5,602
Send a message via ICQ to Roelof
Default

Quote:
Originally Posted by martinh View Post
To quote them on their web site, The inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration. Go to Novarossi site click on Nova Flash engine then click features and this is under crankshaft. Regards Martin.
And per definition that is true and not just simple commercial talk?
As also they let you think you need 9 intake ports to go fast.......

Yes, they never gonna tell they have found a cheaper production to make more profit. No, they tell you the new piston is better and the filling works better.....

Ok, lets end this but Alex Siddique is right about rotating mass....
__________________
Speed is only fiction but a 130+km/h MRS4 is for real.
Roelof is offline   Reply With Quote
Old 05-04-2010, 11:41 AM   #3599
Tech Regular
 
Join Date: Apr 2005
Posts: 314
Default

Does somone know if the Nova head buttons 28022 and 28022/01 are interchangable? The 28022 is specified for the 35+21 Collari Cordoba and the 28022/01 for the Collari 09 or the Flash. Can not see a difference between them...
fulcrum2 is offline   Reply With Quote
Old 05-04-2010, 08:28 PM   #3600
Tech Adept
 
Join Date: Aug 2009
Posts: 172
Default

Quote:
Originally Posted by BLKNOTCH View Post
Hello guy's and gal's, I have just opened my 353 09 for the first time since running the car last summer. I found that when turning the crank by hand it seamed a bit notchy, so I tore it completely apart. I found there was a large amount of orange residue on the conrod and at the top of the piston along with a black center on the piston, it also seems that the front bearing is a bit gritty, can I clean the front bearing with brake clear or something to that degree to get the grit out? or is this a sign that a new front bearing is needed? the main bearing still seams smooth with no roughness to it at all. I have pics and will post but the battery on my camera just died LOL.(Charging now) I run the engine with Byrons 20% Race 2000 Gen2 fuel and keep the temp between 240 deg and 280 deg when racing. I did not find there to be any slop in the conrod to crank bushing but I am just a bit worried about the orange colour.

Thanks guy's

Sean






Wow! of the 9 years I've been doing this I've never seen a engine internals look this bad... I've ran about 3 gallons of Byrons Gen 2 in my engine and it looked nothing like this. I'm surprised there isn't more damage ..
Twisted_Metal is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sirio engines thread EVOLUTION Offroad Nitro Engine Forum 2824 04-29-2014 10:58 AM
Axial Engines thread Axial Racing Onroad Nitro Engine Zone 164 10-06-2008 05:48 PM
RB engines thread CraigM Nitro Off-Road 7 01-05-2008 10:57 AM
JP Engines Thread DOMOisCOOL Onroad Nitro Engine Zone 2 02-16-2004 05:00 AM
OS engines thread EVOLUTION Onroad Nitro Engine Zone 44 02-11-2004 06:28 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 07:54 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net