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Old 05-30-2007, 11:20 AM   #2506
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Quote:
Originally Posted by Julius
As all parts have a tolerance sometimes the combination of both will create this problem. However in this case sometimes installing the outdrive 180degrees opposite will solve the problem. Then both tolerances cancel out.
Yes, I thought of that and tried swapping out drives left to right and rotating themm 180deg as well. The one hole (closest to the pulley) was off enough that the pin just wouldn't go through no matter what.
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Old 05-30-2007, 01:09 PM   #2507
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I am using a setup that is working well for me right now but I need to gain a bit more mid corner steering on throttle. How do I go about doing this? Would using less caster achieve this?
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Old 05-30-2007, 01:22 PM   #2508
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Quote:
Originally Posted by Killa G
I am using a setup that is working well for me right now but I need to gain a bit more mid corner steering on throttle. How do I go about doing this? Would using less caster achieve this?
Less caster is the wrong thing to do. More caster would help, but first let me ask you a question. How stable is the car. Can you go with a heavier rear diff oil, or less rear toe. Things to try to help : stiffer rear springs, stiffer rear sway bar, more caster, heavier rear diff oil (20,000 more than currently using), raise rear roll center, less front droop travel (this way less weight goes to rear on power. These are just some ideas. Hope it helps.

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Old 05-30-2007, 02:04 PM   #2509
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Quote:
Originally Posted by dj apolaro
Less caster is the wrong thing to do. More caster would help, but first let me ask you a question. How stable is the car. Can you go with a heavier rear diff oil, or less rear toe. Things to try to help : stiffer rear springs, stiffer rear sway bar, more caster, heavier rear diff oil (20,000 more than currently using), raise rear roll center, less front droop travel (this way less weight goes to rear on power. These are just some ideas. Hope it helps.

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The car is fairly stable. First thing I may try is less rear toe. Just to confirm You increase caster by adding more shims to the rear correct?

My current setup.

Front
40 shore
Camber 2 and 2.5
Toe 1 out
Spool
Sway bar at 45 deg
Caster 4mm shims in front
40 wt oil 3 holes
Blue Spring
shocks layed down

Rear
42 shore
40 wt oil 3 hole
Red Springs
30,000wt oil
2.5 rear toe in
3 and 3.5 camber
2.3 mm rear swar in about 4mm
Shocks 2nd hole from bottom

Roll center front and rear are in default positions.
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Old 05-30-2007, 02:30 PM   #2510
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Quote:
Originally Posted by Killa G
The car is fairly stable. First thing I may try is less rear toe. Just to confirm You increase caster by adding more shims to the rear correct?

My current setup.

Front
40 shore
Camber 2 and 2.5
Toe 1 out
Spool
Sway bar at 45 deg
Caster 4mm shims in front
40 wt oil 3 holes
Blue Spring
shocks layed down

Rear
42 shore
40 wt oil 3 hole
Red Springs
30,000wt oil
2.5 rear toe in
3 and 3.5 camber
2.3 mm rear swar in about 4mm
Shocks 2nd hole from bottom

Roll center front and rear are in default positions.
You can try changing the lower rear roll center adjustment and go one step higher (just note that a lot of things will change after changing the roll center i.e. camber, droop, etc. so make sure you put them back where you want them). Another thing to try is 1 degree rear toe. This couple of changes should help you get what you are looking for. Let us know how it goes after the changes .
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Old 05-30-2007, 02:40 PM   #2511
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Quote:
Originally Posted by Killa G
The car is fairly stable. First thing I may try is less rear toe. Just to confirm You increase caster by adding more shims to the rear correct?
i believe you increase caster by adding shims to the front
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Old 05-30-2007, 02:46 PM   #2512
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Quote:
Originally Posted by bosfan
i believe you increase caster by adding shims to the front
+1
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Old 05-30-2007, 02:48 PM   #2513
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Quote:
Originally Posted by Killa G
The car is fairly stable. First thing I may try is less rear toe. Just to confirm You increase caster by adding more shims to the rear correct?

My current setup.

Front
40 shore
Camber 2 and 2.5
Toe 1 out
Spool
Sway bar at 45 deg
Caster 4mm shims in front
40 wt oil 3 holes
Blue Spring
shocks layed down

Rear
42 shore
40 wt oil 3 hole
Red Springs
30,000wt oil
2.5 rear toe in
3 and 3.5 camber
2.3 mm rear swar in about 4mm
Shocks 2nd hole from bottom

Roll center front and rear are in default positions.
You already have a lot of caster. The more the arms go back the more caster. I would go to 2mm of caster, 2 rear toe, front sway bar flat and one more up on the rear roll center. Is the track flat? What are you droop settings?

DJ
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Old 05-30-2007, 02:54 PM   #2514
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Quote:
Originally Posted by dj apolaro
You already have a lot of caster. The more the arms go back the more caster. I would go to 2mm of caster, 2 rear toe, front sway bar flat and one more up on the rear roll center. Is the track flat? What are you droop settings?

DJ
The track is pretty flat. My droop is 0 front and 5 rear. I will try what you suggested. So that will put the rear lower roll center to the #3 position.

Cool thanks.
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Old 05-30-2007, 03:24 PM   #2515
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Quote:
Originally Posted by Killa G
The track is pretty flat. My droop is 0 front and 5 rear. I will try what you suggested. So that will put the rear lower roll center to the #3 position.

Cool thanks.
Yes!!!!
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Old 05-30-2007, 05:28 PM   #2516
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ha dj
can you tell me the part number for the cone shape spacer between the brake disk and the rearing bearing block for the 2 speed shaft
thanks jimmy
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Old 05-30-2007, 06:57 PM   #2517
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Hey guys I got a question for ya.
I'm running on a new track in Delaware. I took my 720 out there and tried a few setups. The track is flat. Surface is like a fresh paved highway. Asphalt is not tight and is a bit dusty. It's a sweeper track. Fast. I need suggestions on a set up
I have not run my 720 on parking lots. My 710 did most of that type of racing. I tried my 710 setup on the 20 but it did not work too well. I had a hell of a lot of push. So much so that I was seen by some racers as having my wheels turned 3/4 before the right sweeper. Remember this track is fast and dusty.

My set up was.
Front
2 degrees camber front
Springs yellow (all around)
35 weight shock oil (all around)
Shock position 2 Front
caster 3mm

Rear
2.5 degrees rear
Toe 2.5
Diff 30,000
Shock position 3
Tires 37's all around. tried up to 40 and was sliding

Any help or ideas are welcome.
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Old 05-30-2007, 07:17 PM   #2518
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try the 37 front and a 42 rear. also try a stiffer front spring and softer rear.

put the red in front, try the front sway bar disconected also.

what is the front diff, diff/solid/oneway ?
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Old 05-30-2007, 07:44 PM   #2519
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Quote:
Originally Posted by captian
ha dj
can you tell me the part number for the cone shape spacer between the brake disk and the rearing bearing block for the 2 speed shaft
thanks jimmy
Not sure what spacer you are talking about. The only one I know of is the spacer between the bearing and the 2nd gear. Is this the one you are talking about. There is no spacer on the inside between the disk brake. Let me know so I can help you. Is it the spacer on the outside of the bearing block bewteen the bearing and the 2nd gear.
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Old 05-30-2007, 08:10 PM   #2520
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Hey Jim,do you mean for the 3rd one way?I think it will come with the shaft
part#803190or the whole set #803178.
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