R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 08-01-2004, 10:33 AM   #8236
Tech Elite
 
JDXray's Avatar
 
Join Date: Mar 2004
Location: Long Island, New York
Posts: 2,802
Trader Rating: 3 (100%+)
Send a message via AIM to JDXray
Default

okay thanks Dtm
JDXray is offline   Reply With Quote
Old 08-01-2004, 01:32 PM   #8237
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

Hmm, ok this just created a dilemna for me..... which chassis for me? New XRAY or BMI?

Can someone maybe give some input on both the chassis?

Dom
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 08-01-2004, 02:02 PM   #8238
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,838
Trader Rating: 13 (100%+)
Default

having your car underweight is a big advantage if you look at it the right way.you can add weight where it is needed and use it as a tuning option.if you make it heavy,you are stuck with what you are given.also,if your car is lighter at a club race or some non sanctioned event,you will be at a big advantage and at the same time have a car that is extremely rigid.my main concern with my chassis was to eliminate twist.the compression was a given being that it is a double deck chassis.now if you are lighter and more rigid,that leads to more speed going into a corner and more speed through and out of the corner.the car will change directions faster and square up much easier.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 08-02-2004, 12:14 AM   #8239
dtm
Tech Champion
 
dtm's Avatar
 
Join Date: Aug 2001
Location: HKG
Posts: 7,551
Send a message via ICQ to dtm
Default

Quote:
Originally posted by litespeed-dom
Hmm, ok this just created a dilemna for me..... which chassis for me? New XRAY or BMI?

Can someone maybe give some input on both the chassis?

Dom
All things being equal (if I did not already have both)...I would get the BMI chassis. Save yourself the extra grams.

When you have the upper deck and bulkheads installed, the longitudinal stifness of the chassis has less effect than the torsional stiffness (twist) of the chassis, this is the area where the BMI wins over the Xray 3.5mm
dtm is offline   Reply With Quote
Old 08-02-2004, 02:51 AM   #8240
Tech Regular
 
Join Date: Feb 2004
Location: Netherlands
Posts: 286
Trader Rating: 1 (100%+)
Default

Quote:
Originally posted by protc3
i can offer a more than stiff enough chassis with minimal weight gain.a lighter car is a faster car
While I agree that a lighter car is a faster car in this case it is not an issue. Even with the new XRay chassis I still have to add 10-30 grams (depending on whether the transponder weight is considered in the minimum weight) to make the minimum weight.

So in terms of car weight there is no difference. However the thicker XRay chassis does put the weight as low as possible. Can't get lower than the chassis level itself. Low CG means faster car too.
__________________
Tony Vredenberg
tonyv is offline   Reply With Quote
Old 08-02-2004, 03:44 AM   #8241
Tom
Tech Regular
 
Tom's Avatar
 
Join Date: Nov 2002
Location: Australia-mate
Posts: 349
Default

Has anyone got the new front shock tower?

My question is, compared to the current FK tower (i got a 4 hole one not the 3 hole as in the instructions), do the shock and roll-centre holes line up? are the different hights/angles? Of course i reliaze the new outer camber link mounts, just woundering about the others?

Tom is offline   Reply With Quote
Old 08-02-2004, 04:22 AM   #8242
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,838
Trader Rating: 13 (100%+)
Default

yes the weight is lower but the majority of it is also further back.as long as the weight is below the axles it will have the same effect.that is what everyone trys to shoot for
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 08-02-2004, 06:22 AM   #8243
Tech Regular
 
Join Date: Jan 2004
Location: Frederick, Md
Posts: 357
Default

protc3-

Raced with John Fontaine this weekend. He showed me a adjustable upper plate for the X-ray you had made. Can I get one and how much? I also race with WYD.

Thanks Allen
soon2bfast is offline   Reply With Quote
Old 08-02-2004, 06:26 AM   #8244
Tech Elite
 
theisgroup's Avatar
 
Join Date: Apr 2002
Posts: 3,191
Trader Rating: 10 (100%+)
Default

Quote:
Originally posted by tonyv
So in terms of car weight there is no difference. However the thicker XRay chassis does put the weight as low as possible. Can't get lower than the chassis level itself. Low CG means faster car too.
i agree that the lower the weight the lower the CG, but would it not be more effective to have the extra 18 grams in one place at the center of the chassis, then dristributed through out the chassis? I would think adding the 18 grams all over would make the cars that much slower in transitions.

I would think that adding weight where it is needed is alot better then just adding weight.
__________________
yang lai

Team Tamale | Team Tekin | RCAmerica | Speedmerchant | Speedzone RC | EA Motorsports | Ko Propo USA | eXpress Motorsports | Parma/PSE
theisgroup is offline   Reply With Quote
Old 08-02-2004, 10:22 AM   #8245
Tech Elite
 
TeamButter's Avatar
 
Join Date: Dec 2002
Location: Florida
Posts: 2,802
Trader Rating: 3 (100%+)
Send a message via AIM to TeamButter
Default

Dominic-What's up man this is Mike A from Florida....
just an F.Y.I the chassis that I used during the Nats was the BMI 350 chassis. Not really wanting to get into a discussion about torsional or longitudinal flex...my opinion is that the battery placement is by far the most crucial difference (benefit) to the BMI chassis. While at the nats, Alex and I tied for the fastest lap on the track in stock (16.4) while I was using the BMI and he was running the current Xray chassis.

The fact that the BMI chassis is lighter is in fact a tuning aid because as Jason said it allows you to place weight exactly where it is needed.

My recommendation is to go with the BMI chassis!
If you have any other questions you can post here or PM me...

Hope that helped a little...

Mike A
__________________
Xray / BMI Racing / KO Propo / Team Epic / Parma-PSE / High Velocity Racing / TeamButter / P3 Graphics / MDI Racing
TeamButter is offline   Reply With Quote
Old 08-02-2004, 10:47 AM   #8246
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

Thanks Mike! I think my question was a bit vague, but you addressed my main concern!

Dom
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 08-02-2004, 01:16 PM   #8247
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

Just ordered my XRAY chassis from BMI (Thanks to Team Butter!!!) in GOLD color, since black isn't available for another several days, why not try a different color! Jason was real cool to talk to and Keira's customer service was great! Can't wait to try out the new chassis this week.

Dom
Attached Images
File Type: jpg p1010091.jpg (88.9 KB, 132 views)
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 08-02-2004, 01:37 PM   #8248
Tech Elite
 
JDXray's Avatar
 
Join Date: Mar 2004
Location: Long Island, New York
Posts: 2,802
Trader Rating: 3 (100%+)
Send a message via AIM to JDXray
Default

That is sweet! you can really see the CF with gold.
JDXray is offline   Reply With Quote
Old 08-02-2004, 01:51 PM   #8249
Tech Elite
 
John Fontaine's Avatar
R/C Tech Charter Subscriber
 
Join Date: Mar 2003
Location: SouthEast PA
Posts: 2,699
Trader Rating: 2 (100%+)
Send a message via AIM to John Fontaine
Default

I have the BMI 350 in Ti. Worked great on Saturday. Took a little setup changes, but it's a great performer. Very predictable and fast. Check out the pic of it all mounted.

Can't go wrong with BMI!

Good racing with you RCO guys

JF
Attached Images
File Type: jpg bmixray2ti.jpg (120.4 KB, 143 views)
__________________
Xray and Serpent....very dusty!
John Fontaine is offline   Reply With Quote
Old 08-02-2004, 01:57 PM   #8250
Tech Elite
 
JDXray's Avatar
 
Join Date: Mar 2004
Location: Long Island, New York
Posts: 2,802
Trader Rating: 3 (100%+)
Send a message via AIM to JDXray
Default

Makes me want to get a BMI chassis now...
JDXray is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS - NEW !!!! XRAY NT18T and XRAY NT18 plus HUDY micro truck starter box w/ battery Omarko Australia For Sale/Trade 2 06-25-2008 08:47 PM
Xray T2, Brushed Motor Combo, Setup Tools, Xray Springs, Bodies etc... GroffBall R/C Items: For Sale/Trade 13 09-23-2007 08:53 PM
WTB: NIB Xray T1FK05 & Xray Teflon coated aluminum Shock Body Adam.A Australia Wanted to Buy 4 01-02-2007 03:30 PM
WTB: Xray T1FK05 & Xray Teflon coated aluminum Shock Body Adam.A R/C Items: Wanted to Buy 1 12-30-2006 03:26 PM
XRAY sedan spring kit / XRAY multi-diff / PRS 114t spur / RR 64p pinions / Stratus evostyle R/C Items: For Sale/Trade 6 12-19-2006 09:33 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 04:47 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