R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 02-24-2004, 10:21 AM   #4816
Tech Fanatic
 
cyba888's Avatar
 
Join Date: Jan 2004
Location: Taipei
Posts: 988
Default

Quote:
Originally posted by markp27
Maybe, can't help there - but it could be that there is more pre-tension on one side than the other (i.e. the tension used to get rid of any tweak).

Good luck with the mosquito - at least we don't have them here until June
Someone mentioned my chassis might be tweaked. I highly doubt it but will check it out as well. If it is then im screwed!

I usually dont get mosquitos in my place either until the summer time. Tell me your location and ill tell my mosquito buddy to give you a surprise visit Dam I think I just got bit on the ear! I closed my bedroom door hoping its outside but now im afraid to sleep ...argh!
__________________
2014 and 2015 BD7 Black Series, Yokomo RPX ESC- Yokomo 4.5T Motor
Yokomo B-MAX4 III Factory Team Kit, Muchmore ESC- LRP 6.5T Motor
Mugen MBX7R Eco- 2200 KV Motor
Futaba 4PX
cyba888 is offline   Reply With Quote
Old 02-24-2004, 10:39 AM   #4817
Tech Elite
 
markp27's Avatar
 
Join Date: Jan 2003
Location: Nuremberg, Germany
Posts: 4,069
Send a message via ICQ to markp27
Default

Quote:
Originally posted by cyba888
Someone mentioned my chassis might be tweaked. I highly doubt it but will check it out as well. If it is then im screwed!

I usually dont get mosquitos in my place either until the summer time. Tell me your location and ill tell my mosquito buddy to give you a surprise visit Dam I think I just got bit on the ear! I closed my bedroom door hoping its outside but now im afraid to sleep ...argh!
No, I doubt it is the chassis, as the lifting method accounts for twisted chassis, too. But if you are worried, take a metal ruler and place it across the chassis - this would show if it is bent.

Ehm, I live at the north pole! Nuremberg is just a disguise
markp27 is offline   Reply With Quote
Old 02-24-2004, 01:05 PM   #4818
Tech Elite
 
markp27's Avatar
 
Join Date: Jan 2003
Location: Nuremberg, Germany
Posts: 4,069
Send a message via ICQ to markp27
Default

Quote:
Originally posted by InitialD
26 mm wide front and 30 mm wide (or even 31 mm) rear.



That question you need to answer for yourself. Ask around the people on the track what shore hardness they are using. Harder shores last longer but generally gives you less traction. Sometimes even unusable at your track !

I suggest you stick with foams if you want to practise or if you plan to race. If you buy from certain places in HK, they can come up even cheaper than rubber tires with rims and inserts. With foams, you only got to play with the shore hardness variable unlike with rubber tires. Rubber tires once overheat will never not give you the same exact traction (even after it has cooled down) when it is new.
Some interesting info about tyre hardness from the XXXMain chassis setup guide (great little book for explaining about what various aspect of the setup do):
To determine when to change to a different hardness, bear in mind that there are two types of tyre traction: forward traction and side bite.
Forward traction dictates how hard the car can accelerate and side bite is the amount of traction obtained when the tyre is loaded due to cornering forces.
Generally soft tyres give more forward traction and harder tyres give more side bite. And this is why fronts are generally harder than rears.
There are obviously limits to this and going too far in either direction will result in loss of traction.


Cheers, Mark.
markp27 is offline   Reply With Quote
Old 02-24-2004, 05:30 PM   #4819
Tech Champion
 
Join Date: Sep 2002
Location: Chicago Illinois USA
Posts: 9,106
Trader Rating: 16 (100%+)
Send a message via ICQ to Solara Send a message via AIM to Solara
Default

Quote:
Originally posted by baller360
can someone please answer my post!
I can get you a new NM 3 port SS engine for a good price...but you have to let me know where are you located...

Beside, the NS15 is considered OUTLAW and most of the track WOULD NOT allow you to run along with the other TC with 12 engine......but if you want something to run around at the parking lot....that is probably one expensive and powerfull engine to run...

email me or PM me about the Nova Mega 3 SS...
Solara is offline   Reply With Quote
Old 02-24-2004, 06:12 PM   #4820
Tech Champion
 
Join Date: Sep 2002
Location: Chicago Illinois USA
Posts: 9,106
Trader Rating: 16 (100%+)
Send a message via ICQ to Solara Send a message via AIM to Solara
Default

Quote:
Originally posted by cyba888
When I lift the car both wheels come off the floor but one of the arms seems to drop faster than the other. I think it might have to do with the shocks not being even when rebounding. Dam it! I got bit by a mosquito! How the hell did it get into my place Trying to type and hunt it down at the same time
4 things to check that....

1) Check your suspension arms (at all area) make sure all of them can swing up and down freely without any binding....

2) The length of the shock are equal.....you know that part.

3) The pre-load of the springs.....

4) I think that is where the problem is....make sure the HOLES opening are the same....2,3,4 or 5.... You might have a shock open at 4 hole and the other is in 3 hole, the more holes open, the FASTER the shaft will travel (less dampering, less rebound).

Check that out....(I would say check the oil too.....but you must be crazy to have 2 different oil weight into 2 shocks)
Solara is offline   Reply With Quote
Old 02-24-2004, 06:17 PM   #4821
Tech Fanatic
 
cyba888's Avatar
 
Join Date: Jan 2004
Location: Taipei
Posts: 988
Default

Quote:
Originally posted by Rookie Solara
4 things to check that....

1) Check your suspension arms (at all area) make sure all of them can swing up and down freely without any binding....

2) The length of the shock are equal.....you know that part.

3) The pre-load of the springs.....

4) I think that is where the problem is....make sure the HOLES opening are the same....2,3,4 or 5.... You might have a shock open at 4 hole and the other is in 3 hole, the more holes open, the FASTER the shaft will travel (less dampering, less rebound).

Check that out....(I would say check the oil too.....but you must be crazy to have 2 different oil weight into 2 shocks)
Im sure I have everything that you mentioned correct. The only thing could be the rebound of the shocks. Will check it out.
__________________
2014 and 2015 BD7 Black Series, Yokomo RPX ESC- Yokomo 4.5T Motor
Yokomo B-MAX4 III Factory Team Kit, Muchmore ESC- LRP 6.5T Motor
Mugen MBX7R Eco- 2200 KV Motor
Futaba 4PX
cyba888 is offline   Reply With Quote
Old 02-24-2004, 06:24 PM   #4822
Tech Rookie
 
Join Date: Feb 2004
Posts: 1
Default

hi yall. im new to this forum. im going to purchase this kit, but my LHS does not carry serpent. does anyone know the cheapest place to buy this kit online? i heard they go as low as 340. thanks
jhson114 is offline   Reply With Quote
Old 02-24-2004, 06:28 PM   #4823
Tech Champion
 
Join Date: Sep 2002
Location: Chicago Illinois USA
Posts: 9,106
Trader Rating: 16 (100%+)
Send a message via ICQ to Solara Send a message via AIM to Solara
Default

Quote:
Originally posted by cyba888
Im sure I have everything that you mentioned correct. The only thing could be the rebound of the shocks. Will check it out.
1 more.....the ball ends (both up and down) of the shocks, if they are too tight, it will slow the shock movement as well.
Solara is offline   Reply With Quote
Old 02-24-2004, 06:32 PM   #4824
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by markp27
To determine when to change to a different hardness, bear in mind that there are two types of tyre traction: forward traction and side bite.

Forward traction dictates how hard the car can accelerate and side bite is the amount of traction obtained when the tyre is loaded due to cornering forces.

Generally soft tyres give more forward traction and harder tyres give more side bite. And this is why fronts are generally harder than rears.

There are obviously limits to this and going too far in either direction will result in loss of traction.
Hey thanks for the info Mark. Perhaps you should print that whol book in PDF?
InitialD is offline   Reply With Quote
Old 02-24-2004, 06:40 PM   #4825
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by cyba888
I think in order for my car to run good with 37 shores is to toe out a bit more and use red springs that I am hoping will arrive my this weekend!
If you're traction rolling, first and foremost, check the ride height ! Use about 6 to 7 mm or even lower. Smaller diameter tires also help. Don't forget when using smaller tires, change to use bigger pinions (or smaller spurs) to compensate for the loss in tire rollout (top speed) accordingly. At least you'll not get blasted on the straights.

Harder front shock springs or oil and front sway bar setting also helps. You could mount the front shock more vertical.

You could also use harder front shore tires. Or if you need to be more adventurous, play with the front roll center setting. Go to the highest front roll center setting.

Anyway, do it one at the time. I would suggest trying the simplest which would be the ride height, shock angle setting, front sway bar adjustment and the tire change.
InitialD is offline   Reply With Quote
Old 02-24-2004, 08:06 PM   #4826
Tech Fanatic
 
cyba888's Avatar
 
Join Date: Jan 2004
Location: Taipei
Posts: 988
Default

Does the Seprent 710 setup book come in pdf format?

Highest front roll center would mean the suspension arms are closer together right?
__________________
2014 and 2015 BD7 Black Series, Yokomo RPX ESC- Yokomo 4.5T Motor
Yokomo B-MAX4 III Factory Team Kit, Muchmore ESC- LRP 6.5T Motor
Mugen MBX7R Eco- 2200 KV Motor
Futaba 4PX
cyba888 is offline   Reply With Quote
Old 02-24-2004, 08:09 PM   #4827
Tech Champion
 
jfc_tech's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jul 2002
Location: www.JonehRC.com
Posts: 7,000
Trader Rating: 4 (100%+)
Send a message via Yahoo to jfc_tech
Default

Quote:
Originally posted by InitialD
If you're traction rolling, first and foremost, check the ride height ! Use about 6 to 7 mm or even lower. Smaller diameter tires also help. Don't forget when using smaller tires, change to use bigger pinions (or smaller spurs) to compensate for the loss in tire rollout (top speed) accordingly. At least you'll not get blasted on the straights.

Harder front shock springs or oil and front sway bar setting also helps. You could mount the front shock more vertical.

You could also use harder front shore tires. Or if you need to be more adventurous, play with the front roll center setting. Go to the highest front roll center setting.

Anyway, do it one at the time. I would suggest trying the simplest which would be the ride height, shock angle setting, front sway bar adjustment and the tire change.
Yea cyba888, this is what D told me too. great advice. still can't put it into reality though BCOZ IM STUCK IN THE OFFICE
__________________
If you are in front of me, That's because I let you!
jfc_tech is offline   Reply With Quote
Old 02-24-2004, 08:30 PM   #4828
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by cyba888
Does the Seprent 710 setup book come in pdf format?
Yes it does. You can download it from the mytsn website. Have you registered with mytsn?

Quote:
Originally posted by cyba888
Highest front roll center would mean the suspension arms are closer together right?
When the suspension arms are angles or crossed at a steeper angle, then you get higher roll center. More parallel the suspension arms, the lower the roll center.

In that case I referred to above, put the all shims (2 + 2 = 4 mm) on the top just below the carbon graphite upper deck. That would make the suspension arms angle the most.
InitialD is offline   Reply With Quote
Old 02-24-2004, 08:40 PM   #4829
Tech Champion
 
jfc_tech's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jul 2002
Location: www.JonehRC.com
Posts: 7,000
Trader Rating: 4 (100%+)
Send a message via Yahoo to jfc_tech
Default

Quote:
Originally posted by InitialD
...When the suspension arms are angles or crossed at a steeper angle, then you get higher roll center. More parallel the suspension arms, the lower the roll center.

In that case I referred to above, put the all shims (2 + 2 = 4 mm) on the top just below the carbon graphite upper deck. That would make the suspension arms angle the most.
higher roll center can avoid traction roll on corner entry...is that correct?
__________________
If you are in front of me, That's because I let you!
jfc_tech is offline   Reply With Quote
Old 02-24-2004, 08:49 PM   #4830
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by jfc_tech
higher roll center can avoid traction roll on corner entry...is that correct?
Yup. Higher roll center amkes the car roll less and less grip on that end.
InitialD is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Serpent 705 J_Longbrake Nitro On-Road 4252 02-23-2015 12:34 AM
WTB: NIB Serpent 710 aN4rK1 R/C Items: Wanted to Buy 3 06-16-2006 09:23 PM
Serpent 835 JFCJ R/C Items: Wanted to Buy 3 02-20-2005 09:29 PM
Trade in Your Old Serpent 710 Parts for New Serpent 710 Parts fast_it710 R/C Items: For Sale/Trade 0 09-17-2004 12:27 AM
Serpent Impulse w/MT-12 and Serpent Starter box - cheap Solara R/C Items: For Sale/Trade 2 03-07-2003 03:01 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 05:01 AM.


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