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Old 11-04-2004, 04:13 AM   #10486
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Default Re: I've just printed out a gear ratio chart...

Quote:
Originally posted by Mabuchi540
and I notice there are 5 combinations of spur and pinion that give exactly the same gear ratio (this applies to other ratios as well) so I'm wondering does it really make any difference which combo I use to get any given ratio?


Any advantage to using the smallest combo or the largest etc, some ppl I've talked to say yes others no.
IMO as long as you get the same ratio the car should run the same. The advantage of using a bigger spur though is that you can have the motor further to the outside helping balance the car out better, the battery side is heavier if you're using GP3300's.
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Old 11-04-2004, 04:38 AM   #10487
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Quote:
Originally posted by fai
Dear all, just a simple question:
Does using the lower hole (hinge pin hole) of C-block mean raising roll center and implies reduced steering?
Thanks!
Edit : It actually raises it a lot compared to the upper hole.

Matt : when you tried the upper hole, did you re-set the droop in order to have the same values when you measure them from the C-Hub (very important). Because, when you use that upper hinge pin hole and not re-set the droop, you will have a lot of front droop, meaning that indeed you will not have any on power steering.

If you did re-set the droop, then i am not surprised either , this hole lowers the RC a lot and it might be too much for the tyres (they may work too much). I tried to use the upper hinge pin hole on the rear, and it didn't work well for me.

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Old 11-04-2004, 04:59 AM   #10488
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I use upper hole hinge pin front and rear for strength reason ( I still use standard suspension arm which prone to break after big hit ). The car will oversteer after you use the rear upper hole hinge pin, but you could compensate it with thicker oil and harder springs at front.
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Old 11-04-2004, 05:06 AM   #10489
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Quote:
Originally posted by Cobra81li200
It actually lowers it a lot.

Matt : when you tried it, did you re-set the droop in order to have the same values when you measure them from the C-Hub (very important). Because, when you use that upper hinge pin hole and not re-set the droop, you will have a lot of front droop, meaning that indeed you will not have any on power steering.

If you did re-set the droop, then i am not surprised either , this hole lowers the RC a lot and it might be too much for the tyres (they may work too much). I tried to use the upper hinge pin hole on the rear, and it didn't work well for me.
Yes, I reset everything in the front when I tried it, it was actually one of Masami's setups, didn't fit my driving style at all. So you're saying when you use the lower hole in the castor block the roll center is lowered? That was the question.
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Old 11-04-2004, 05:13 AM   #10490
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Quote:
Originally posted by Matt Howard
Yes, I reset everything in the front when I tried it, it was actually one of Masami's setups, didn't fit my driving style at all. So you're saying when you use the lower hole in the castor block the roll center is lowered? That was the question.
The question was concerning the upper hole if I am not mistaken, which lowers the RC a lot (more angled wishbones usually have this effect, but it also depends on the angle of the upper link (to a lower extent though).

If you want to raise the RC, try swapping the spacers of the front hubs (have the spacer that is placed between the C-Hub and the hub on the lower hinge pin). Again, the droop will need re-setting, as always when you change the RC (apart from when you move the upper link).
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Old 11-04-2004, 05:17 AM   #10491
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Quote:
Originally posted by fai
Dear all, just a simple question:
Does using the lower hole (hinge pin hole) of C-block mean raising roll center and implies reduced steering?
Thanks!
Here's the initial question, you had me thinking I was going crazy
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Old 11-04-2004, 05:35 AM   #10492
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Quote:
Originally posted by Matt Howard
Here's the initial question, you had me thinking I was going crazy


woooooops

Having seen that, I always use the lower hole and the car works fine for me...
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Old 11-04-2004, 05:38 AM   #10493
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Quote:
Originally posted by Cobra81li200
woooooops

Having seen that, I always use the lower hole and the car works fine for me...
same here
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Old 11-04-2004, 05:43 AM   #10494
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I know why, you got me confused, as you answered the question by saying you tried to use the upper hole...

Anyway, I leave what I posted earlier, it might be helpful for smoe people...
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Old 11-04-2004, 06:34 AM   #10495
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anyone using yokomo aluminum hinge pin mounts? are they durable?
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Old 11-04-2004, 06:52 AM   #10496
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Quote:
Originally posted by j06
anyone using yokomo aluminum hinge pin mounts? are they durable?
I use them, they're fine, no problems at all.
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Old 11-04-2004, 07:05 AM   #10497
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No hinge pins trying to sneak out the back of the car when you use the rear ones....
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Old 11-04-2004, 07:54 AM   #10498
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Quote:
Originally posted by vtl1180ny
No hinge pins trying to sneak out the back of the car when you use the rear ones....
Never, there is no hole all the way through
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Old 11-04-2004, 08:03 AM   #10499
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Quote:
Originally posted by vtl1180ny
No hinge pins trying to sneak out the back of the car when you use the rear ones....

Err, if you're having that problem, maybe you should consider using the grub screws that are supposed to go in the rear hinge pin holder
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Old 11-04-2004, 08:15 AM   #10500
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Default Re: Re: I've just printed out a gear ratio chart...

Quote:
Originally posted by Matt Howard
IMO as long as you get the same ratio the car should run the same. The advantage of using a bigger spur though is that you can have the motor further to the outside helping balance the car out better, the battery side is heavier if you're using GP3300's.
Finally - Ahmen!!
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