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RC10B4/T4 Forum

Old 12-10-2008, 01:51 PM
  #6316  
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Originally Posted by Tubaboy View Post
No offense to Murfdogg motors. But what exactly is he doing to tune a brushless motor? About the only potential that I see is 1. Testing to make sure it's not a dud. 2. Replacing the bearings with ceramics (which I doubt they're doing)

Would be interested in knowing.

Paul
I dont know what he is doing but I hear you can adjust the timing and change the performance.
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Old 12-10-2008, 02:11 PM
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Originally Posted by Tubaboy View Post
No offense to Murfdogg motors. But what exactly is he doing to tune a brushless motor? About the only potential that I see is 1. Testing to make sure it's not a dud. 2. Replacing the bearings with ceramics (which I doubt they're doing)

Would be interested in knowing.

Paul
Balance the rotor?
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Old 12-10-2008, 02:22 PM
  #6318  
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Originally Posted by Tubaboy View Post
No offense to Murfdogg motors. But what exactly is he doing to tune a brushless motor? About the only potential that I see is 1. Testing to make sure it's not a dud. 2. Replacing the bearings with ceramics (which I doubt they're doing)

Would be interested in knowing.

Paul
I really havent gotten into it with him since I have just jointed the team in the last month but the things that have been talked about the most are alot of little things inside the (can) that he does that really makes a difference. If he wants to tell you him self thats fine but thats up to him.
His 17.5 was the fastest motor at the recent truck race at Hot Rod hobbies and the Nationals this year. He does alot of testing which has paid off.

I do have a Murfdogg 6.5 bl that he did that is just rediculous off the bottom end.

If you want to contact him to ask him go on the team forum and ask. His name is Matt.
http://www.rctech.net/forum/team-com...-thread-7.html

Adjusting the timeing is one thing but that is a pretty standard adjustment that helps.
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Old 12-10-2008, 06:19 PM
  #6319  
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Originally Posted by scottk View Post
I have tried that setup from wild cherry awhile back and still found the car handled better at nimh weight especially on slippery or bumpy tracks.
cheers
My own impressions after two races.....

improve balance in the turn

very predictable and easier to aim out of the turn.

extra high speed steering that the weighted car does not have and needs bad....

Traction is improved, more side bite & specially forward bite

Agree though, so far its seems a bit bumpier , not all that bad though...



Then after all that above ....
JUMPS

The jumps become easier to clear and landing`s smoother, biggest change you notice about this set-up.
Rather say for a light set-up , this one is as good as the weighted car, on par for sure...

please , not trying to shoot you down Scott . Enjoyed hearing your impressions very much...
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Old 12-11-2008, 06:54 AM
  #6320  
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Thanks WC, I will try that setup. On the rear camber link it calls for 1 .030 spacer on the bulkhead, can I assume that's with the newer bulkhead with the .060 built in?
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Old 12-11-2008, 12:05 PM
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Never mind
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Old 12-11-2008, 01:06 PM
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Originally Posted by Wild Cherry View Post
Front

Ft ball stud .060 , I`m using .090 (more = smoother steering)

30 Gt-2 Caster block , axle in the middle

Ft camber
A hole caster block & #1 on tower

Ft shock
#2 hole shock tower & I hole on arm
35W #2 piston , .030 limiter, brown spring, Thread bottom shock eyelet all the way


Rear
Drill 4th hole on tower next to hole #1

camber
rear ball stud .030 #1 hole & B hole on rear hub

rear shock
4th hole on tower, I hole on arm
30w #2 piston, silver spring .060 limiter

rear Hub forward on arm
2 anti squat
CvD`s
.060 bump steer
JConcept gold compound Bar Code ft & rear tire, 3/4 rear insert ft tire & standard insert in rear
Trinity Buggy Grip
Ft arm level & rear dogbone level

Lrp X-11 10.5 78/26
Reedy 5000 Li-Po
Lrp Competition ESC
3/16 off set motor plate ( More on this coming )

Note :

remove all ballast including 1 1/2 oz on rear
you can use 7gram on receiver side to off set ESC weight if you like
What Akerman position on steering rack, foward or rear?
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Old 12-11-2008, 01:12 PM
  #6323  
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Originally Posted by Wild Cherry View Post
For hard pack clay ...

and a 5000 Reedy Li-Po ....

Its a brand new set-up , and not developed by me.
I stole it from a Ae factory team driver just last week end....
he got it last Tuesday...


I`v use ballast & Li-Po for years until I drove my B-4 set-up this way ....


Anyone who has`nt tried this will be thanking me next week big time....

Strongly recommend you guys try ....
News travels slow to the west coast !!!
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Old 12-11-2008, 04:57 PM
  #6324  
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Originally Posted by RB FIVE View Post
News travels slow to the west coast !!!
what up with that Five?
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Old 12-11-2008, 06:49 PM
  #6325  
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Originally Posted by RB FIVE View Post
News travels slow to the west coast !!!
meh, I've had it since summer, just no time to try it...

Here's my variation of the set-up. The track that I was running on was a little slick.

http://farm4.static.flickr.com/3117/...58bdfc44_o.jpg

The standard set-up has these changes-

Front camber link shims -2
Anti Squat - 2
Rear Oil -30
Standard Rear Arm Length
Rear Hub Position -Middle
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Old 12-12-2008, 12:16 AM
  #6326  
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Just picked up a FTB4 and was wondering what digital servo you recommend for the buggy.
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Old 12-12-2008, 12:32 AM
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Originally Posted by t4mania View Post
Just picked up a FTB4 and was wondering what digital servo you recommend for the buggy.
Depends on your budget and if you're going to be racing or bashing.

Racing: 150 oz/in @~.10s @6volts, metal gears.

Bashing (not my specialty but): 100oz/in @~.15s @ 6volts, metal gears if you can swing it price wise.

JR, Futaba and Hitec all make really good servos.
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Old 12-12-2008, 02:54 AM
  #6328  
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Thanks Adam I'll be racing it.
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Old 12-12-2008, 04:44 AM
  #6329  
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The ACE/AE 1015 or 1313, Futaba BLS451, etc. Just as Adam posted above. You don't want to fast. These things can be twitchy enough as it is. I would keep it above 0.10, better yet would be a 0.12 transit time. Not a huge difference and probably not enough to really feel. It's more of a mental thing I think.

I'm using a Futaba 9351 in mine because I had it kicking around.
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Old 12-12-2008, 06:40 AM
  #6330  
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Originally Posted by t4mania View Post
Thanks Adam I'll be racing it.
jr9100s.... S'awesome !
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