R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 06-10-2003, 08:57 PM   #1906
Tech Master
 
Join Date: Nov 2001
Location: TEXAS. USA
Posts: 1,219
Trader Rating: 2 (75%+)
Default AIR-LEAK

Accord,
Make sure that all the screws on the motor are tight and there!!
Nizee gave you a good hint to check your carb seal to the motor....make sure its all the way in and on tight. Nizee and modellor are correct about not having a compression problem it a air-leak problem and lean setting.



Good Luck....
PUNISHER is offline   Reply With Quote
Old 06-10-2003, 09:27 PM   #1907
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by corwin
Anyone having issues with the earlier release version of the 705 with the chassis that does not have the extra material beside the front screws.
No not really. Just that the particular part tends to bend easier if you crash headon. I crashed mine on a runaway directly to the wall but when I bend it back straight, the hole where the front screw sits developed a crack

I think the newer chassis will not bend easier on that part.
InitialD is offline   Reply With Quote
Old 06-10-2003, 09:32 PM   #1908
Tech Adept
 
apmk's Avatar
 
Join Date: Feb 2003
Posts: 127
Default

[QUOTE]Originally posted by InitialD
[B]I basically didn't use them from the get go on the 705. I dremmeled the plastic part off so that I have the space to put an aluminum exhaust holder. You can get them 3rd party from Team Magic etc. It's basically a cyclinder aluminum piece that has a grub screw to hold the pipe via the exhaust wire. This mounts the exhaust pipe very securely. I find that the plastic piece beside the front left bulkhead to hold the exhaust wire is weak and if it breaks, you need to replace the whole front left bulkhead. This is what I've learnt from driving my Impulse.


Do you have a nice pic to show on this modification?
apmk is offline   Reply With Quote
Old 06-10-2003, 09:58 PM   #1909
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Accord, like most who have replied, the symptoms you mentioned suggested like you have an air leak. When you tighten the button head / heatsink, make sure you tighten them in a cross section. The backplate the same too. Most of the time, the culprit is the carb. It may be loose there or not tightened properly.

The symptoms of an air leak is the engine will idle at a very high RPM for 5 to 10 seconds before going down.

Perhaps it would also be helpful if you could provide us with your needle settings. Using 30% with a no. 5 plug is a little too hot.
InitialD is offline   Reply With Quote
Old 06-10-2003, 10:19 PM   #1910
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by apmk
Do you have a nice pic to show on this modification?
I'll try and post a pic when I get back
InitialD is offline   Reply With Quote
Old 06-10-2003, 10:28 PM   #1911
Tech Addict
R/C Tech Elite Subscriber
 
Join Date: May 2002
Posts: 667
Trader Rating: 2 (100%+)
Default

Quote:
Originally posted by InitialD
No not really. Just that the particular part tends to bend easier if you crash headon. I crashed mine on a runaway directly to the wall but when I bend it back straight, the hole where the front screw sits developed a crack

I think the newer chassis will not bend easier on that part.
Kind of disappointed that I got my 705 new a couple weeks ago and ended up with the old chassis and not the newer one. Worried that what happened to you will happen to myself. Wonder how much the newer chassis goes for just itself?
corwin is offline   Reply With Quote
Old 06-10-2003, 11:58 PM   #1912
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by corwin
Kind of disappointed that I got my 705 new a couple weeks ago and ended up with the old chassis and not the newer one. Worried that what happened to you will happen to myself. Wonder how much the newer chassis goes for just itself?
I think all 705 chassis (801185) that comes out will have the new design. Same part number. Just checked out RCCarinternational and they have it at EURO 54.52. Look elsewhere in your area. They should have it already.

You can actually continue to use the one that you currently have until you bend it... There is no performance difference between the two designs. Else, you can always contact modellor. He has a 705 4 mm chassis design up in the pipeline Coming out soon I heard.
InitialD is offline   Reply With Quote
Old 06-11-2003, 08:03 AM   #1913
Tech Regular
 
fmolzer's Avatar
 
Join Date: Jul 2002
Posts: 467
Default

Accord, If you don't find your problem by hunting for air leaks and lean settings, the other part of the equation would be if you have something obstructing the fuel, maybe a small piece of debris in the fuel line, or, a small pebble that has found it's way into your pressure line feeding the tank, if this happens (happened to me and I tore my hair looking for the problem) it will create a partial vaccum in the tank, the result is a lean running engine that does not respond to changes in the needle settings, similar to what you describe.

Just another angle to try....
fmolzer is offline   Reply With Quote
Old 06-11-2003, 09:52 AM   #1914
Tech Addict
R/C Tech Elite Subscriber
 
Join Date: May 2002
Posts: 667
Trader Rating: 2 (100%+)
Default

Started a Yahoo group for Serpent 705, thought it would be nice place to post some info and pictures of our cars. Just have to be a member of Yahoo to join group.

Place to put links, pictures, files, etc.



http://groups.yahoo.com/group/Serpent705/
corwin is offline   Reply With Quote
Old 06-11-2003, 10:50 AM   #1915
Tech Regular
 
taz5176's Avatar
 
Join Date: Feb 2003
Posts: 271
Default laydown servo, advantage?

wat advantage does a lay-down steering servo has?
taz5176 is offline   Reply With Quote
Old 06-11-2003, 11:03 AM   #1916
Tech Addict
R/C Tech Elite Subscriber
 
Join Date: May 2002
Posts: 667
Trader Rating: 2 (100%+)
Default

Biggest advantage would be lower centre of gravity
corwin is offline   Reply With Quote
Old 06-11-2003, 11:37 AM   #1917
Tech Addict
 
Join Date: Feb 2002
Location: Kansas City
Posts: 582
Default Chassis

Corwin, and IntialD

I too have a earlier chassis,
and haven't hit anything --and it has a noticable
upward bend in the nose section. What I have
noticed is that it has a lack of on power steering,
with tons of off power...........
I believe a thicker chassis would remeady this problem.

Bill
BSYDOR is offline   Reply With Quote
Old 06-11-2003, 01:44 PM   #1918
Tech Master
 
Join Date: Nov 2001
Location: TEXAS. USA
Posts: 1,219
Trader Rating: 2 (75%+)
Default

Modify exhaust hanger on the bulkhead.......
Pretty simple modification.... grind away the old exhaust hanger mount with a dermal and replace it with aluminum one.
No more changing out bulkhead becuz of a busted exhaust mount!
Sorry, InitialD I beat you to your reply!!




Sorry for the poor picture quilty....cheap digtal camera.
Attached Images
File Type: jpg picture 150.jpg (48.1 KB, 70 views)

Last edited by PUNISHER; 06-11-2003 at 01:51 PM.
PUNISHER is offline   Reply With Quote
Old 06-11-2003, 02:29 PM   #1919
Tech Prophet
 
InitialD's Avatar
 
Join Date: Feb 2002
Location: MORDOR
Posts: 19,679
Default

Quote:
Originally posted by PUNISHER
Modify exhaust hanger on the bulkhead.......
Pretty simple modification.... grind away the old exhaust hanger mount with a dermal and replace it with aluminum one.
No more changing out bulkhead becuz of a busted exhaust mount!
Sorry, InitialD I beat you to your reply!!




Sorry for the poor picture quilty....cheap digtal camera.
Hey Punisher, just invest in a damn digital camera and stop spending on the car... For once you'll do the car justice

Damn, you beat me to it... Yes, that one looks exactly like mine. I think that one comes from Kyosho. It could probably be Mugen.

I actually forgot about wanting to post the pic. Once I saw your post, I could not even take some more pics... Taken too many for the NovaMax till there's no batteries left
InitialD is offline   Reply With Quote
Old 06-11-2003, 02:32 PM   #1920
Tech Elite
 
Neil Rabara's Avatar
 
Join Date: Jul 2002
Location: Lone Star
Posts: 4,821
Default

Hello all

I will be getting more into gas during the summer and I just wanted some info from all of you regarding necessary hop-up parts, and parts that tend to break for the 705. Any help would be greatly appreciated.
Neil Rabara is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Serpent 710 Ron C. Nitro On-Road 23347 03-16-2010 02:47 PM
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 03:20 PM.


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