BMI Racing "Copperhead 12" discussion and support
#871
Great Jason, count me in for a set of those 2mm axle shims!
Also, were the shims that you used underneath the pivot balls special shims or will any 1mm shim do the trick?
Also, were the shims that you used underneath the pivot balls special shims or will any 1mm shim do the trick?
#873
Tech Champion
iTrader: (31)
So Jason you're saying you tried 1mm shims UNDER the 4 pivot balls & UNDER the copper hinge pin block, and although both places mellowed the car out/made it easy to drive, with the shims under the pivot balls it kept the camber gain (of the initial setup) AND had more onpower steering.
Was the notice of this subtle or drastic?
+2
Was the notice of this subtle or drastic?
+2
#874
So Jason you're saying you tried 1mm shims UNDER the 4 pivot balls & UNDER the copper hinge pin block, and although both places mellowed the car out/made it easy to drive, with the shims under the pivot balls it kept the camber gain (of the initial setup) AND had more onpower steering.
Was the notice of this subtle or drastic?
+2
Was the notice of this subtle or drastic?
+2
#875
Any word on getting kits out?
I ordered a kit last week hoping to get it earlier this week and nothing. I emailed and was told something about waiting for ball cups?
I ordered a kit last week hoping to get it earlier this week and nothing. I emailed and was told something about waiting for ball cups?
#877
#878
Tech Master
Hi mate! I got to have a chat with Jason last week, whilst we were down in Florida on holiday, and also got him to explain how the new front end works. It's actually not like anything out there at the moment, at all!! Very nice piece of kit, well explained by someone that obviously know's the technical side of how RC car dynamics work. So much so, that I am now waiting for the new GT10 to be ready to order and then will order that, and the 12th ca together! I am going over to Deb's tomorrow to run the truck, I'll have a chat with you if you racing TC's. Cheers bud, Chris.
#880
Tech Fanatic
iTrader: (8)
Uh-Oh
Hi guys,
I had my first race with the CH12 and new front-end last night. I was hoping to come here and rave about how good it was, but unfortunately I had some significant handling problems that I'm hoping the collective wisdom here can help with! My setup was very similar to Jason's that he posted a few weeks ago:
Front:
Stock flex plates installed "stiff"
1 deg camber
6 deg castor
#5 surelube in tube
4mm ride height
0.75mm droop
Jaco Lilac cut to 42mm with inside 1/4 sauced (Niftech)
Rear:
1.2mm carbon flex plates installed "long"
#3 surlube in tubes
4mm ride height
1mm pod droop
Blue center spring w/ Losi 40Wt oil
Jaco Yelow cut to 44mm full sauce
Proline AMR body
The problem I was having was WAY too aggressive steering, especially off-throttle entering corners. I would let off slightly and turn in to the corner and back-end would snap around on me, sometimes violently. I don't think it was tweak as everything seemed to be working as it should and it behaved this way turning in both directions. I also had really excessive tire wear at the rear as I started @ 44mm and after 3 six minute qualies and 1 8 minute main I had burned through 2mm of rear tire . My guess is the current setup is somehow over-working the rear tires causing the loss of traction and accelerated wear.
I'm using a Tekin RS Pro with no drag brake and Push Control set to 30. Our track is quite tight and is not ozite type carpet but rather really short-nap office style carpet with only medium grip.
I really want to get this car working well as I really think it has great potential but at the moment I'm at a loss to figure out what to do so I would really appreciate any input from Jason and everyone else!
Cheers,
Mike
I had my first race with the CH12 and new front-end last night. I was hoping to come here and rave about how good it was, but unfortunately I had some significant handling problems that I'm hoping the collective wisdom here can help with! My setup was very similar to Jason's that he posted a few weeks ago:
Front:
Stock flex plates installed "stiff"
1 deg camber
6 deg castor
#5 surelube in tube
4mm ride height
0.75mm droop
Jaco Lilac cut to 42mm with inside 1/4 sauced (Niftech)
Rear:
1.2mm carbon flex plates installed "long"
#3 surlube in tubes
4mm ride height
1mm pod droop
Blue center spring w/ Losi 40Wt oil
Jaco Yelow cut to 44mm full sauce
Proline AMR body
The problem I was having was WAY too aggressive steering, especially off-throttle entering corners. I would let off slightly and turn in to the corner and back-end would snap around on me, sometimes violently. I don't think it was tweak as everything seemed to be working as it should and it behaved this way turning in both directions. I also had really excessive tire wear at the rear as I started @ 44mm and after 3 six minute qualies and 1 8 minute main I had burned through 2mm of rear tire . My guess is the current setup is somehow over-working the rear tires causing the loss of traction and accelerated wear.
I'm using a Tekin RS Pro with no drag brake and Push Control set to 30. Our track is quite tight and is not ozite type carpet but rather really short-nap office style carpet with only medium grip.
I really want to get this car working well as I really think it has great potential but at the moment I'm at a loss to figure out what to do so I would really appreciate any input from Jason and everyone else!
Cheers,
Mike
#881
Maybe try another body, the Proline AMR body
has tons of steering. Protoform speed 12 should be better...
has tons of steering. Protoform speed 12 should be better...
#882
Tech Champion
iTrader: (31)
Hi guys,
I had my first race with the CH12 and new front-end last night. I was hoping to come here and rave about how good it was, but unfortunately I had some significant handling problems that I'm hoping the collective wisdom here can help with! My setup was very similar to Jason's that he posted a few weeks ago:
Front:
Stock flex plates installed "stiff"
1 deg camber
6 deg castor
#5 surelube in tube
4mm ride height
0.75mm droop
Jaco Lilac cut to 42mm with inside 1/4 sauced (Niftech)
Rear:
1.2mm carbon flex plates installed "long"
#3 surlube in tubes
4mm ride height
1mm pod droop
Blue center spring w/ Losi 40Wt oil
Jaco Yelow cut to 44mm full sauce
Proline AMR body
The problem I was having was WAY too aggressive steering, especially off-throttle entering corners. I would let off slightly and turn in to the corner and back-end would snap around on me, sometimes violently. I don't think it was tweak as everything seemed to be working as it should and it behaved this way turning in both directions. I also had really excessive tire wear at the rear as I started @ 44mm and after 3 six minute qualies and 1 8 minute main I had burned through 2mm of rear tire . My guess is the current setup is somehow over-working the rear tires causing the loss of traction and accelerated wear.
I'm using a Tekin RS Pro with no drag brake and Push Control set to 30. Our track is quite tight and is not ozite type carpet but rather really short-nap office style carpet with only medium grip.
I really want to get this car working well as I really think it has great potential but at the moment I'm at a loss to figure out what to do so I would really appreciate any input from Jason and everyone else!
Cheers,
Mike
I had my first race with the CH12 and new front-end last night. I was hoping to come here and rave about how good it was, but unfortunately I had some significant handling problems that I'm hoping the collective wisdom here can help with! My setup was very similar to Jason's that he posted a few weeks ago:
Front:
Stock flex plates installed "stiff"
1 deg camber
6 deg castor
#5 surelube in tube
4mm ride height
0.75mm droop
Jaco Lilac cut to 42mm with inside 1/4 sauced (Niftech)
Rear:
1.2mm carbon flex plates installed "long"
#3 surlube in tubes
4mm ride height
1mm pod droop
Blue center spring w/ Losi 40Wt oil
Jaco Yelow cut to 44mm full sauce
Proline AMR body
The problem I was having was WAY too aggressive steering, especially off-throttle entering corners. I would let off slightly and turn in to the corner and back-end would snap around on me, sometimes violently. I don't think it was tweak as everything seemed to be working as it should and it behaved this way turning in both directions. I also had really excessive tire wear at the rear as I started @ 44mm and after 3 six minute qualies and 1 8 minute main I had burned through 2mm of rear tire . My guess is the current setup is somehow over-working the rear tires causing the loss of traction and accelerated wear.
I'm using a Tekin RS Pro with no drag brake and Push Control set to 30. Our track is quite tight and is not ozite type carpet but rather really short-nap office style carpet with only medium grip.
I really want to get this car working well as I really think it has great potential but at the moment I'm at a loss to figure out what to do so I would really appreciate any input from Jason and everyone else!
Cheers,
Mike
HTH's
#883
#884
Hi guys,
I had my first race with the CH12 and new front-end last night. I was hoping to come here and rave about how good it was, but unfortunately I had some significant handling problems that I'm hoping the collective wisdom here can help with! My setup was very similar to Jason's that he posted a few weeks ago:
Front:
Stock flex plates installed "stiff"
1 deg camber
6 deg castor
#5 surelube in tube
4mm ride height
0.75mm droop
Jaco Lilac cut to 42mm with inside 1/4 sauced (Niftech)
Rear:
1.2mm carbon flex plates installed "long"
#3 surlube in tubes
4mm ride height
1mm pod droop
Blue center spring w/ Losi 40Wt oil
Jaco Yelow cut to 44mm full sauce
Proline AMR body
The problem I was having was WAY too aggressive steering, especially off-throttle entering corners. I would let off slightly and turn in to the corner and back-end would snap around on me, sometimes violently. I don't think it was tweak as everything seemed to be working as it should and it behaved this way turning in both directions. I also had really excessive tire wear at the rear as I started @ 44mm and after 3 six minute qualies and 1 8 minute main I had burned through 2mm of rear tire . My guess is the current setup is somehow over-working the rear tires causing the loss of traction and accelerated wear.
I'm using a Tekin RS Pro with no drag brake and Push Control set to 30. Our track is quite tight and is not ozite type carpet but rather really short-nap office style carpet with only medium grip.
I really want to get this car working well as I really think it has great potential but at the moment I'm at a loss to figure out what to do so I would really appreciate any input from Jason and everyone else!
Cheers,
Mike
I had my first race with the CH12 and new front-end last night. I was hoping to come here and rave about how good it was, but unfortunately I had some significant handling problems that I'm hoping the collective wisdom here can help with! My setup was very similar to Jason's that he posted a few weeks ago:
Front:
Stock flex plates installed "stiff"
1 deg camber
6 deg castor
#5 surelube in tube
4mm ride height
0.75mm droop
Jaco Lilac cut to 42mm with inside 1/4 sauced (Niftech)
Rear:
1.2mm carbon flex plates installed "long"
#3 surlube in tubes
4mm ride height
1mm pod droop
Blue center spring w/ Losi 40Wt oil
Jaco Yelow cut to 44mm full sauce
Proline AMR body
The problem I was having was WAY too aggressive steering, especially off-throttle entering corners. I would let off slightly and turn in to the corner and back-end would snap around on me, sometimes violently. I don't think it was tweak as everything seemed to be working as it should and it behaved this way turning in both directions. I also had really excessive tire wear at the rear as I started @ 44mm and after 3 six minute qualies and 1 8 minute main I had burned through 2mm of rear tire . My guess is the current setup is somehow over-working the rear tires causing the loss of traction and accelerated wear.
I'm using a Tekin RS Pro with no drag brake and Push Control set to 30. Our track is quite tight and is not ozite type carpet but rather really short-nap office style carpet with only medium grip.
I really want to get this car working well as I really think it has great potential but at the moment I'm at a loss to figure out what to do so I would really appreciate any input from Jason and everyone else!
Cheers,
Mike
Front:
3mm ride height
.25mm droop
1.8mm flex plate soft postion(longest postion)
1 degree camber
6 degrees caster
2mm shim behind each axle
1.5mm shim under the hinge pin block( i needed to trim 2 4-40x 5/8 screw slightly to allow it to fully clamp the hinge pin block)
No shims under the pivot balls on the arms
BSR team purple cut to 1.620 w/ glued sidewalls
1/4 inside with sauce
Rear:
red center spring w/ 45 wt. oil
1mm pod droop
1.2mm c/f flex plates mounted long position(soft)
3mm ride height
#4 shurlube in tubes
Gray/White tires cut to 1.670 w/ glued sidewalls
Full sauce on the tire
Parma HD speed 8
The car was really easy to drive. Smooth and very fast. I ran with top level drivers today and did the best i ever had against them. I was very happy with the car. Honestly the best 1/12th car i have ever driven. I have driven them all and this really blew me away. Tire wear was minimal. .010 after 4 8 minute runs. The front and rears wore at the same rate. The car was very efficient and carried a ton of speed through the corners.
#885
Tech Champion
That is odd Mike...with the soft rear flex plates in the long position and the blue spring that should really generate a lot of rear traction. Was it like that from the start or did it run good for a lap or 2 then go bad after a crash? Are any of your rear pivots binding?