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 09-20-2004, 11:07 AM   #481
Tech Elite
 
YBSLOW's Avatar
R/C Tech Elite Subscriber
 
Join Date: May 2002
Location: ARIZONA
Posts: 2,367
Trader Rating: 6 (100%+)
Default Waz up Kevin

You got pm.
__________________
YBSLOW Racing
RC Target - Capricorn
HOTRACE Tyres, Tru Source, Fantom
POWER MASTER Fuel, 2mm Designs
Protoform Bodies, Avid Bearings, AMR Engines
YBSLOW is offline   Reply With Quote
Old 09-20-2004, 03:43 PM   #482
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

Were all recovering from the nats. Motivation level is on the rise though.
__________________
Just here to give the world grief.
Motorman is offline   Reply With Quote
Old 09-20-2004, 06:41 PM   #483
Tech Elite
 
tallyrc's Avatar
 
Join Date: Mar 2003
Location: palm city, fl
Posts: 2,594
Trader Rating: 12 (100%+)
Default

i figured. just thought i'd ask as i am excited too. missed 2 races because i have no motor.
tallyrc is offline   Reply With Quote
Old 09-21-2004, 09:21 PM   #484
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

motors should be in this week and after the retrofits we should have a few. will let you know after the rd race this weekend in cali.

the plus part is we are now working with two engine manufacturers which is a good thing. we are also investigating taking on a custom version of the team magic g4 built especially for RD. after looking at all the good cars out there this one stands out as a great performer with a few changes and they appear to be willing to work with us.

Usefull note from the nats:
I'll try to make this simple without getting into deep theory, but it appears that in more than a few cases people are suffering detonation from to short of a tuned pipe header. It happened to us at the nats when the wether rose above 70 degrees. after reviewing numerous races in the last year and discussing engine performance problems with all engines we have used including novarossi we discovered that in many cases an engine ran great late in the day and very poor in the middle of the day. at the nats we traced it to to short of a header causing blowback into the crankcase. this caused the engine ( both novas and rd's)to detonate and be needle sensitive. so heres how you detect it.

If your running a turbo II pipe and the head clerance is .021 thousanths on 40 % fuel and all the sudden it starts to lay over about 5 minutes in and you find the needles look excessively rich on their adjustment this is what is happening. The tuned pipe reversion wave is so strong that it is causing the fuel air mixture to be blown back down into the crankcase and no amount of richening will fix it. This is an indicator that the pipe is to short and we suggest you use the long 12 header and the long 21 header if the temp is above 75 degrees or the air density is high. This has bitten us many times the last year and during a discussion with the team we surmised that this is what was happening. Infact on a novarossi pipe it became really severe. so we are making adjustments to the RD pipe line to address this issue with the long header being standard and the short being the option. (all of us are pushing the engines right to the edge)
Dennis
RD Logics.
__________________
Just here to give the world grief.

Last edited by Motorman; 09-21-2004 at 09:40 PM.
Motorman is offline   Reply With Quote
Old 09-21-2004, 10:30 PM   #485
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by Motorman
at the nats we traced it to to short of a header causing blowback into the crankcase. this caused the engine ( both novas and rd's)to detonate and be needle sensitive.
When you refer to a short pipe, what overall pipe length (measurred according to RB website) are you referring to?

Is it also a problem when you run 30% or lower nitro?
InitialD is offline   Reply With Quote
Old 09-22-2004, 06:47 AM   #486
Tech Addict
 
Join Date: Aug 2002
Posts: 602
Trader Rating: 1 (100%+)
Default pipe dreams

hey dennis ' so how many millimeters are we talling to elminate
this problem? also your website is being held hostage ,waz-up with that? power to the people
isuzuguy is offline   Reply With Quote
Old 09-22-2004, 07:01 AM   #487
Tech Elite
 
EdwardN's Avatar
 
Join Date: May 2003
Location: SoCal
Posts: 2,144
Trader Rating: 1 (100%+)
Default RD Ligics engines

Hi Dennis.
Your explanation is realy good info for some processes I have seen. Wasn't be better idea to try 20% there in Ohio in that conditions? Unfortunately my boss didn't give me Sunday off to fly to Ohio.
Are you comming to RD logics? I will be there on Saturday only, my boss again didn't give me Sunday off to be at RD logics, but he gave me day off for our reginonals.
__________________
DISCLAIMER: Since 90% of my posts may be BS, and since my posts may be either insanely idiotic, incoherent, and/or not even close to a rational thought, please accord my posts no more than 10% of credibility.
EdwardN is offline   Reply With Quote
Old 09-25-2004, 02:48 PM   #488
Tech Master
 
dg8one's Avatar
 
Join Date: Jul 2002
Location: NELLYVILLE
Posts: 1,368
Default

Hey Dennis
just wanna know if the carb is done nor not
can get one of those motor
can i put that on any motor too

thanks a lot
nelly
dg8one is offline   Reply With Quote
Old 09-27-2004, 03:32 PM   #489
Tech Regular
 
Join Date: Mar 2003
Location: UK,the sunny north
Posts: 329
Default

Quote:
Originally posted by Motorman


the plus part is we are now working with two engine manufacturers which is a good thing. we are also investigating taking on a custom version of the team magic g4 built especially for RD. after looking at all the good cars out there this one stands out as a great performer with a few changes and they appear to be willing to work with us.

Dennis
RD Logics.
the custom g4 sounds interesting, do you have any details
__________________
Speedmerchant WGT
Shepherd V10 Velox Idm evo 4
Shepherd V8 velox Idm evo 4
www.DHmodelsport.co.uk
jas1 is offline   Reply With Quote
Old 09-30-2004, 11:51 AM   #490
Tech Regular
 
maxysfuel's Avatar
 
Join Date: Sep 2003
Location: Miami
Posts: 302
Trader Rating: 2 (100%+)
Default

Quote:
Originally posted by Motorman
was happy made the bump from the b to the a. broke the car at 30 minutes or so but had fun. I think I finished 8th or 9th in the masters A. RD motor ran great. Kinda ran out of tire real fast

four drivers used the turbo II pipe in the a main Cyrul, Hara, Tossolini, and one other but who escapes me.(might of been skidmore) Turbo II wins the nats two years in a row. Thanks again Atushi. Atushi was short on power but his incredible driving and his pitstops made up for it. The guy is just incredible.

The reason why Atushi had less power on Sunday than he did on Saturday is because a big head was used instead of a small head. Since it was a one hour race consistency was the main concern, not power. This change led to a cooler temperature. Insted of finishing at 240 he finished at 190. Hara's car also finished with very thin tires(53mm). It was fast in the in-field but in the straight away it did not have enough speed.

Richey, congratulations on you motors, They did very well at the Nationals. I am sure that you will go far with them.
maxysfuel is offline   Reply With Quote
Old 09-30-2004, 04:11 PM   #491
Tech Adept
 
blue dragon's Avatar
 
Join Date: Feb 2004
Location: Austin, Texas
Posts: 197
Default

Quote:
Originally posted by Motorman
we suggest you use the long 12 header
Is there a part number? I have been having this same problem, figured it was my new engine and still breaking in.
blue dragon is offline   Reply With Quote
Old 09-30-2004, 05:18 PM   #492
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

maxy well done, I am very happy for you. (really I am, I know what a big deal it is for an engine modifier) big feather in the cap. Like winning the superbowl.
i've been chasing it a long time, it will come.

we had a short pipe issue with my timing configuration that jumped up and bit me starting friday. I did not discover it untill saturday night and by then it was to late. Tis racing and has been typical for us at the nats. I learned something over again that made it more valuable than where we placed. albeit my guys were really frusturated. good for RD Logics, tough for us. but thats why I'm there. Poor tire choice hurt us too. nitro shoes or ellegis man got to have em. Thats twice I fell into that trap with other tires.
__________________
Just here to give the world grief.

Last edited by Motorman; 09-30-2004 at 06:26 PM.
Motorman is offline   Reply With Quote
Old 09-30-2004, 06:11 PM   #493
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

To those who are concerned. The signature engines should be at rd in 22 days. They will be based on a different engine base than the techwell but are the real deal. Been alot of juggling going on. They are truly customs and there will be no more signatures (the signature will be a short rod motor) for a while, while we work on a second generation engine for next year. we will launch a great motor that is custom made to our specs for us in the next month.(the engine the signature is based on)that is within 95% performance of the signature. extensive testing has gone on and our versions really run exceptional for the dollar value. I'm a really fussy when it comes to my blessing and putting my name on it.
__________________
Just here to give the world grief.
Motorman is offline   Reply With Quote
Old 09-30-2004, 06:14 PM   #494
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

blue dragon 60215
__________________
Just here to give the world grief.
Motorman is offline   Reply With Quote
Old 09-30-2004, 06:15 PM   #495
Tech Master
 
Motorman's Avatar
 
Join Date: Nov 2001
Location: Michigan
Posts: 1,911
Trader Rating: 1 (100%+)
Default

yes we will be bringing in the g4. and full k factory upgrades. we will be working on a custom package with engine and pipe to at an exceptional value very soon. RD is getting serious

parts for that car and upgrades will never be a problem again
__________________
Just here to give the world grief.

Last edited by Motorman; 09-30-2004 at 06:34 PM.
Motorman is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
richey Excellent Takt Buyer/Seller dispute and Feedback discussion forum 1 11-26-2005 09:27 AM
Richey Mt 12 Still New Jon Carlson R/C Items: For Sale/Trade 2 09-07-2004 04:56 AM
Richey RTU engine MT12 TexasRacer R/C Items: For Sale/Trade 0 03-08-2004 09:32 AM
RD/Richey racing engine update Motorman Nitro On-Road 38 12-07-2003 12:14 AM
Dennis Richey RTU MT12 Engine Dan R/C Items: For Sale/Trade 14 12-15-2002 10:11 AM



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 11:30 PM.


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