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RC10B4/T4 Forum

Old 05-08-2009, 06:36 PM
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Thanks Ray!
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Old 05-09-2009, 02:32 PM
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Does anyone know what is the default rear toe in on B4 and T4?
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Old 05-09-2009, 02:36 PM
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I am wondering what would be the best servo for B4 and T4.

I am currently using Futaba BLS 452 in my B4 and T4, which has 194oz of torque and 0.14s/60 degree of speed. I think my cars is rather slow at tight hair pin corners, so I am wondering if that could be caused by the slow servo speed.

Have anyone done any side by side comparison of high speed vs slow speed servo? Does it actually make much difference on how the car take corners?
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Old 05-09-2009, 02:49 PM
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Well speed abviously can make a difference... You have good 8th scale servos that you would use for steering in them.

.10 speed or under is good for 10th scales... I have BLS451's witch is 147oz in at .10 Prolly the best Futaba you can get right now.

JR servos have the best speed though. i think they have that is .06!!!! But they run big cases!

Originally Posted by billythekid View Post
Does anyone know what is the default rear toe in on B4 and T4?
I think its 2 degree's Billy.. but I never checked before, or found out, cause the setup sheets never say on them.. lol
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Old 05-09-2009, 02:55 PM
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Originally Posted by BSchorr View Post
Well speed abviously can make a difference... You have good 8th scale servos that you would use for steering in them.

.10 speed or under is good for 10th scales... I have BLS451's witch is 147oz in at .10 Prolly the best Futaba you can get right now.

JR servos have the best speed though. i think they have that is .06!!!! But they run big cases!



I think its 2 degree's Billy.. but I never checked before, or found out, cause the setup sheets never say on them.. lol
Have you tried your BLS 451 and also a slower servo in your car? Does the car turn in noticeably quicker?
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Old 05-09-2009, 02:58 PM
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Really, only 2 degrees? I thought it should be more. My touring car had default of 3 degree.
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Old 05-09-2009, 03:01 PM
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Originally Posted by billythekid View Post
Really, only 2 degrees? I thought it should be more. My touring car had default of 3 degree.
Same for the B4 and T4, 3 degrees rear toe in at the inner hinge pin.
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Old 05-09-2009, 03:10 PM
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Originally Posted by billythekid View Post
I am wondering what would be the best servo for B4 and T4.

I am currently using Futaba BLS 452 in my B4 and T4, which has 194oz of torque and 0.14s/60 degree of speed. I think my cars is rather slow at tight hair pin corners, so I am wondering if that could be caused by the slow servo speed.

Have anyone done any side by side comparison of high speed vs slow speed servo? Does it actually make much difference on how the car take corners?
Everyone, please share your experience with fast and slow servos. I would really like to know if swithing from a 0.14 to 0.10 servo could make much difference on how the car turn into tight hair pin corners.
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Old 05-09-2009, 03:14 PM
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Originally Posted by billythekid View Post
Does anyone know what is the default rear toe in on B4 and T4?
It's 3 degrees
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Old 05-09-2009, 03:37 PM
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Originally Posted by billythekid View Post
Everyone, please share your experience with fast and slow servos. I would really like to know if swithing from a 0.14 to 0.10 servo could make much difference on how the car turn into tight hair pin corners.
Anything faster than a true .15sec is plenty quick. Not all servo manufacturers are honest with this figure so take them with a grain of salt. I use a JR 4850 (analog, 76oz/.15sec.) in my B4 and it's plenty quick.
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Old 05-09-2009, 03:48 PM
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Anyone know of a decent tire that will fit the T4 that works well on asphalt and lasts a long time, looking to spend about $20 and already have wheels...

I browsed around but wasn't exactly sure what was good.

I don't need them to race, just for play, long life is more important than grip, truck currently has a 13.5t Orion.
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Old 05-09-2009, 04:04 PM
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Originally Posted by Davidka View Post
Anything faster than a true .15sec is plenty quick. Not all servo manufacturers are honest with this figure so take them with a grain of salt. I use a JR 4850 (analog, 76oz/.15sec.) in my B4 and it's plenty quick.
I just compared BLS452 the speed of my friend's on road car servo S9551 with 0.10 speed and that servo was quite a lot faster. It can turn as fast as my hand could turn the transmitter wheel. Too bad he won't let me try in my buggy.

Have someone actually tested 0.10s vs 0.14s servo?
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Old 05-09-2009, 04:29 PM
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Originally Posted by billythekid View Post
I just compared BLS452 the speed of my friend's on road car servo S9551 with 0.10 speed and that servo was quite a lot faster.
My $0.02...I've been using an S9551 in my B4 for a while now and it works really well. It's very fast and seems to have enough strength to handle a B4 even on fairly high traction surfaces.

Cheers,
Mike
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Old 05-09-2009, 05:29 PM
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Ive compaired high and low speed servos in a buggy years ago. Cant remember what servos but one was .13 ish and the other was .10ish. The faster servo makes the car feel like it has more rear traction. I think mostly cause the front wheels can get in front of the rear when sliding and control it. The chassis setup is really the limiting factor of how fast or slow the car can snap around or into a corner.

HTH
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Old 05-09-2009, 05:52 PM
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Originally Posted by PartTime View Post
Ive compaired high and low speed servos in a buggy years ago. Cant remember what servos but one was .13 ish and the other was .10ish. The faster servo makes the car feel like it has more rear traction. I think mostly cause the front wheels can get in front of the rear when sliding and control it. The chassis setup is really the limiting factor of how fast or slow the car can snap around or into a corner.

HTH
DK

did you mean the faster servo makes the car feel like it has more traction during acceleration, because you could make small correction quicker?

And the faster servo would not affect the car during cornering as much as suspension setup?
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