Author Topic: Steering rack for piranha  (Read 1994 times)

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rashid7

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Steering rack for piranha
« on: January 17, 2012, 11:30:05 AM »
Hi everyone....

I'm planning to order a 14" rack for my piranha buggy, you can check it from the link below

http://www.mooreparts.com/store/product/1256/AC425150/

And tie rods

http://www.mooreparts.com/store/product/1247/AC425120/

Any recommendations or other options better than this one ?

Thanks all

Online fabr

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Re: Steering rack for piranha
« Reply #1 on: January 17, 2012, 04:31:36 PM »
I want to ask if you have determined that rack will work with your front suspension design without creating bumpsteer?
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein  (IT'S OFFICIAL THAT DAY IS HERE NOW!)

Online fabr

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Re: Steering rack for piranha
« Reply #2 on: January 17, 2012, 04:32:51 PM »
I think Carl broke one like that also.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein  (IT'S OFFICIAL THAT DAY IS HERE NOW!)

Offline Carlriddle

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Re: Steering rack for piranha
« Reply #3 on: January 17, 2012, 05:19:35 PM »
Carl breaks lots of stuff.  rofl  Hopfully something new to break this spring.   ;D


 But Fabrs right, I was running an 11" and snaped the mount where the bolts hold it.  14" would be worse.  If the 14" rack is the correct width I'd put another $50 with it and get the "heavy duty" one listed just above or below that one on Moores site. 
You can keep your CHANGE, I'd like to keep my DOLLAR.

Offline ace

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Re: Steering rack for piranha
« Reply #4 on: January 17, 2012, 11:50:51 PM »
Doug Heim makes very good rack for the piranha, pm him..

Offline Carlriddle

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Re: Steering rack for piranha
« Reply #5 on: January 18, 2012, 07:41:08 AM »
this would prob hold just fine http://www.mooreparts.com/store/product/1258/AC425152/
but as already stated if its not the correct width for your buggy its just a paper weight.  pick andmeasurment of front of buggy and we could give you the right answer.

and the tie rods are probably useless for your rail.  pickup "5/8 swedged alum rods" from speedway motors.  many different lengths threaded ends, 10-15 bucks.
You can keep your CHANGE, I'd like to keep my DOLLAR.

rashid7

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Re: Steering rack for piranha
« Reply #6 on: January 20, 2012, 11:06:17 PM »
I want to ask if you have determined that rack will work with your front suspension design without creating bumpsteer?

i'll be honest i dont know how to check that
 :(
how do i check the rigth width of the rack for me design to avoid bump steer?

rashid7

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Re: Steering rack for piranha
« Reply #7 on: January 20, 2012, 11:41:20 PM »
this would prob hold just fine http://www.mooreparts.com/store/product/1258/AC425152/
but as already stated if its not the correct width for your buggy its just a paper weight.  pick andmeasurment of front of buggy and we could give you the right answer.

and the tie rods are probably useless for your rail.  pickup "5/8 swedged alum rods" from speedway motors.  many different lengths threaded ends, 10-15 bucks.

you mean these tie rods
http://www.speedwaymotors.com/Swedged-6061-Aluminum-Radius-Rod-for-5-8-Inch-Heim,53184.html

Offline rob8420

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Re: Steering rack for piranha
« Reply #8 on: January 21, 2012, 06:25:26 AM »
i'll be honest i dont know how to check that
 :(
how do i check the rigth width of the rack for me design to avoid bump steer?

If you are using the normal single a-arm design the length of the rack, point-point. Should be the same width as the pivot points of the a-arms.

Hope this helps

Robin

Offline Carlriddle

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Re: Steering rack for piranha
« Reply #9 on: January 21, 2012, 06:36:09 AM »
Yes those are the tierods. 

Here is a basic drawing looking front front of car.  The rack should be the width of frame frome left side A-arm pivot to the right side A-arm pivot.
Hopfully this makes sense.  Are you building to plans?
You can keep your CHANGE, I'd like to keep my DOLLAR.

Online fabr

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Re: Steering rack for piranha
« Reply #10 on: January 21, 2012, 07:12:03 AM »
Rashid,NOW is the time to do this part correctly. Follow Carl's advice. Also d a search here for bumpsteer. Lots has been written on the subject. One of the very most important things to the success ,and your happiness with the results of your build, is attention to this detail of assembly.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein  (IT'S OFFICIAL THAT DAY IS HERE NOW!)

rashid7

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Re: Steering rack for piranha
« Reply #11 on: January 21, 2012, 07:59:27 AM »
Yes those are the tierods. 

Here is a basic drawing looking front front of car.  The rack should be the width of frame frome left side A-arm pivot to the right side A-arm pivot.
Hopfully this makes sense.  Are you building to plans?

Yes Carl, but I have changed the design to double a arms instead of a single a arms
The distance between the left and right a arms pivots is 180mm which is about 7"
Do you thinks the 11" rack will work ?
Or should I increase the distance between the two a arms pivots?

rashid7

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Re: Steering rack for piranha
« Reply #12 on: January 21, 2012, 08:03:46 AM »
Rashid,NOW is the time to do this part correctly. Follow Carl's advice. Also d a search here for bumpsteer. Lots has been written on the subject. One of the very most important things to the success ,and your happiness with the results of your build, is attention to this detail of assembly.

You are absolutely right fabr
And i'm so happy that you guys are helping me :)
thanks a lot

Offline Baloo

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Re: Steering rack for piranha
« Reply #13 on: January 21, 2012, 08:59:53 AM »
Yes Carl, but I have changed the design to double a arms instead of a single a arms
The distance between the left and right a arms pivots is 180mm which is about 7"
Do you thinks the 11" rack will work ?
Or should I increase the distance between the two a arms pivots?

yes that would be the way l would go, the 2 need to match and finding a 7" rack might be tough

Online fabr

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Re: Steering rack for piranha
« Reply #14 on: January 21, 2012, 10:14:25 AM »
use a centerload rack and a rack adapter then.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein  (IT'S OFFICIAL THAT DAY IS HERE NOW!)