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 11-01-2011, 11:02 AM   #46
Tech Apprentice
 
MRX4XXXX's Avatar
 
Join Date: Nov 2009
Location: Europe
Posts: 96
Default

Quote:
Originally Posted by stefan View Post
I just measured our Torque Edo (2 of them) and both cranks open at 28 and close at 35
Not sure if I understand the closing degrees correctly? I think the normal is about 60-70degrees? How can it be 35?

-X-
MRX4XXXX is offline   Reply With Quote
Old 11-01-2011, 12:06 PM   #47
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,280
Send a message via ICQ to Roelof
Default

Quote:
Originally Posted by MRX4XXXX View Post
.. That's what we are waiting for(the information), to know what to buy for next summer.

-X-
It would be interesting to see which answer Novarossi has if that change will happen. If they are not on time a huge shift will happen....

For the guys outside Europe wanting to know where we going to talk about:
http://news.efra.ws/fileadmin/news/2...track%20v2.pdf

Also in the main agenda there are some proposals about the exhaust homologation:
http://news.efra.ws/fileadmin/news/2...eting%20V2.pdf
__________________
The quality of an answer comes with the quality of the question.
Roelof is offline   Reply With Quote
Old 11-01-2011, 12:15 PM   #48
Tech Apprentice
 
Join Date: Apr 2008
Posts: 86
Default

Quote:
Originally Posted by stefan View Post
Hi Brent,

we have raised the sleeve on a Torque by 0.1 and 0.2 mm in order to gain top end.
We did, but it hurt the fuel consumption.
I rather gear the Piccos a bit longer than Novas to get the same top speed.
What also helped to gain some revs w/o hurting fuel consumption is using the Nova medium conical header with the Picco 2033 pipe.

My son is still running with a pretty smooth gas finger (will probably be spoiled soon) and he makes 5 minutes with the Torque, doing the same lap times as other people who run NR Flash and only make 3:30.

This has given us the edge in several races this year and I will try to conserv that advantage as long as possible.

Once he is going completely "point & shoot" and won't make the 5 min anymore, I will start modding the Torque towards top end...
raising the sleeve timing, did it hurt the bottom end at all?

What are your thoughts of this Picco TQ .21 compared to the 35Plus21 engines? I am a drag racer and fuel consumption is not a concern of mine rather just having an engine with TONS of bottom end grunt and mid range. My current Kangaroo has been 90.2 MPH from a dead stop up to 132' pass which is ballistic for that short of a distance.

Thanks to all for your input.
Brent Davis is offline   Reply With Quote
Old 11-01-2011, 03:14 PM   #49
Tech Initiate
 
Join Date: May 2011
Posts: 35
Default

Quote:
Originally Posted by Brent Davis View Post
raising the sleeve timing, did it hurt the bottom end at all?

What are your thoughts of this Picco TQ .21 compared to the 35Plus21 engines? I am a drag racer and fuel consumption is not a concern of mine rather just having an engine with TONS of bottom end grunt and mid range. My current Kangaroo has been 90.2 MPH from a dead stop up to 132' pass which is ballistic for that short of a distance.

Thanks to all for your input.
Whenever you change timing either sleeve or crank there is a give and get. When you raise the sleeve timing you will hurt some of the bottom end. My opinion the picco based engines all have alot of torque to them by there nature so loosing some may not effect it quite the same way another engine would be effected. Of course depending on how high we lift the sleeve.
__________________
[email protected]
ShepherdAmerica is offline   Reply With Quote
Old 11-01-2011, 04:44 PM   #50
Tech Regular
 
Join Date: May 2011
Posts: 418
Default

Quote:
Originally Posted by Roelof View Post
It would be interesting to see which answer Novarossi has if that change will happen. If they are not on time a huge shift will happen....

For the guys outside Europe wanting to know where we going to talk about:
http://news.efra.ws/fileadmin/news/2...track%20v2.pdf

Also in the main agenda there are some proposals about the exhaust homologation:
http://news.efra.ws/fileadmin/news/2...eting%20V2.pdf
We still run 5 minute qualifiers here in the USA and Novarossi engines dominated the ROAR Nationals last month. The current Nova engines are actually very efficient and can be set up to run 5 minutes quite easily.
desotoracing is offline   Reply With Quote
Old 11-01-2011, 04:48 PM   #51
Tech Regular
 
Join Date: May 2011
Posts: 418
Default

Quote:
Originally Posted by Brent Davis View Post
raising the sleeve timing, did it hurt the bottom end at all?

What are your thoughts of this Picco TQ .21 compared to the 35Plus21 engines? I am a drag racer and fuel consumption is not a concern of mine rather just having an engine with TONS of bottom end grunt and mid range. My current Kangaroo has been 90.2 MPH from a dead stop up to 132' pass which is ballistic for that short of a distance.

Thanks to all for your input.
Wow, 90+MPH in 132'!!! That Kangaroo is a great engine. Congrats!
desotoracing is offline   Reply With Quote
Old 11-01-2011, 06:38 PM   #52
Tech Apprentice
 
Join Date: Apr 2008
Posts: 86
Default

Quote:
Originally Posted by ShepherdAmerica View Post
Whenever you change timing either sleeve or crank there is a give and get. When you raise the sleeve timing you will hurt some of the bottom end. My opinion the picco based engines all have alot of torque to them by there nature so loosing some may not effect it quite the same way another engine would be effected. Of course depending on how high we lift the sleeve.
Understood. Was just wondering if anyone had actually gotten results from raising the sleeve for the higher timing, IF it hurt some bottom end at all.
Brent Davis is offline   Reply With Quote
Old 11-01-2011, 06:38 PM   #53
Tech Lord
 
wingracer's Avatar
 
Join Date: Nov 2007
Posts: 12,861
Trader Rating: 24 (100%+)
Default

Quote:
Originally Posted by desotoracing View Post
Wow, 90+MPH in 132'!!! That Kangaroo is a great engine. Congrats!
Yeah he's no slouch with the drag car.
__________________
Sean. Certified speed crazed mowron.
Team Shepherd USA
www.ashfordhobby.com
wingracer is offline   Reply With Quote
Old 11-01-2011, 06:39 PM   #54
Tech Apprentice
 
Join Date: Apr 2008
Posts: 86
Default

Quote:
Originally Posted by desotoracing View Post
Wow, 90+MPH in 132'!!! That Kangaroo is a great engine. Congrats!
Yes, 90+MPH in that distance. My teammate has been 92.2 MPH with his Kangaroo so the HP is there. We are just wondering about this Picco to see if it will make even more HP.....we shall see.
Brent Davis is offline   Reply With Quote
Old 11-02-2011, 12:55 AM   #55
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,280
Send a message via ICQ to Roelof
Default

Quote:
Originally Posted by desotoracing View Post
We still run 5 minute qualifiers here in the USA and Novarossi engines dominated the ROAR Nationals last month. The current Nova engines are actually very efficient and can be set up to run 5 minutes quite easily.
As Stefan has mentioned I also have seen the current Flash engines refueling at 3:30 and running empty at 4:00
__________________
The quality of an answer comes with the quality of the question.
Roelof is offline   Reply With Quote
Old 11-02-2011, 04:58 AM   #56
Tech Elite
 
stefan's Avatar
 
Join Date: Aug 2001
Location: Bavaria, Germany
Posts: 3,273
Send a message via AIM to stefan
Default

Quote:
Originally Posted by desotoracing View Post
We still run 5 minute qualifiers here in the USA and Novarossi engines dominated the ROAR Nationals last month. The current Nova engines are actually very efficient and can be set up to run 5 minutes quite easily.
Hey cool! You wanna share how it's done?

I am sure the NR racers over here would really appreciate it.

Robert Pietsch's mechanic is always re-fuelling at 3:30 minutes when he runs 8th scale. :-)
stefan is offline   Reply With Quote
Old 11-02-2011, 05:00 AM   #57
Tech Elite
 
stefan's Avatar
 
Join Date: Aug 2001
Location: Bavaria, Germany
Posts: 3,273
Send a message via AIM to stefan
Default

Quote:
Originally Posted by Brent Davis View Post
Understood. Was just wondering if anyone had actually gotten results from raising the sleeve for the higher timing, IF it hurt some bottom end at all.
As Roelof said, you'll always loose some bottom end when you try to gain top end, but I found it marginal.

I would imagine that the Torque would make a great drag engine with all that bottom end...
stefan is offline   Reply With Quote
Old 11-02-2011, 05:23 AM   #58
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,280
Send a message via ICQ to Roelof
Default

Quote:
Originally Posted by stefan View Post
Hey cool! You wanna share how it's done?

I am sure the NR racers over here would really appreciate it.

Robert Pietsch's mechanic is always re-fuelling at 3:30 minutes when he runs 8th scale. :-)
Probably it has to do with the type/size of the Europian circuits.
__________________
The quality of an answer comes with the quality of the question.
Roelof is offline   Reply With Quote
Old 11-02-2011, 05:51 AM   #59
Tech Elite
 
stefan's Avatar
 
Join Date: Aug 2001
Location: Bavaria, Germany
Posts: 3,273
Send a message via AIM to stefan
Default

Quote:
Originally Posted by Roelof View Post
Probably it has to do with the type/size of the Europian circuits.
90 seconds?
stefan is offline   Reply With Quote
Old 11-02-2011, 06:29 AM   #60
Tech Elite
 
quietstorm76's Avatar
 
Join Date: Apr 2005
Location: Atlanta
Posts: 2,265
Trader Rating: 10 (100%+)
Default

Quote:
Originally Posted by stefan View Post
Hi Brent, I know about the timing. Roelof has posted engine timing a bit further down. where the Torque is listed with 30 -70 = 220 crank timing, which looked strange, especially in light of the awesome fuel consumption of these engines.
So I measured mine, and the are different.

I love the Torques, aside from some bearing problems we had early in the year.
It seems that it was only one of the very early batches (January -February) because later engines didn't have that problem.

The thing you need to get used to is the very low compression these engines seem to have when they are cold.
Some guys wanted to trash them, despite they were running awesome.
Just old Nova habits

The Torque has a different piston material that seems to expand when the engine gets to operating temps and then works great.
Very easy to break in and easy on the rods.
My IDM EVO 4 modified feels like it has low compression but it runs awesome. Starts easy and rarely flames out. I had a bearing go bad I replaced it and it's still going strong. Breaking in an IDM RCW and as expected it has a lot of torque.
__________________
Team Shepherd USA:Nugget's Ranch Raceway
Primary Weapon: ?
Secondary Weapon: ?
Tires>>> I don't know yet
quietstorm76 is offline   Reply With Quote
Reply



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 04:05 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net