WoodsBuggy.com :: View topic - Chassis without rear torsion

Is it a mid-engine chassis?
Lot of those, mine drag buggy included, use a nitrogen shock only for the rear suspension.
Some rear engine sand rails also had that setup.
All were swing axle style.

Shock shaft diameter were usually in the one inch range.
Mine are Fox.

Thanks for the replies, it is a rear engine chassis and i don't know who made it. I am going to try and get some work done on the buggy this weekend and maybe fill up the nitrogen shocks to test them. I was told from a guy at Dan's Performance Parts that they are good shocks and they are actually the ones he recommended before i told him what they were.

Did Dan tell you if they were air shocks or emulisons.

Odyknuck wrote:

Did Dan tell you if they were air shocks or emulisons.

I'm not exactly sure what emulsions are, but he said they were nitrogen shocks and to fill them with pure nitrogen until i get the desired ride height.

Look something like these?

Thse are Marvin Shaw shocks but very similar to my Fox nitrogen shocks.

Ok so they are air shocks and not emulsions. Thanks for the clarification.

Takes a nitrogen tank and regulator to adjust the pressure in the shocks.
I have 180 PSI in the rear shocks of my drag buggy and it sits level.

I had a mid engine sand buggy back in the day with the MS shocks on it.
Had about 250-270 PSI in those. It was a sand only buggy though.

Ok one more question, this will be a woods buggy with 95% of the time being on trails. It is a fairly light rail i believe (me and my dad picked up the frame minus motor and trans. and placed it on the trailer no problem), and probably 100-110 inch wheelbase. How much pressure can these shocks handle and what would be a good pressure to initially fill them with to ensure it will be enough? (i can let the pressure out if it is two stiff or the height is off)

again thanks for the help!

turboblue wrote:

I don't mind a stiff ride, just wanted to make sure it would work. I think i will send the shocks back to Marvin Shaw and have them rebuild them and put coils on them while i finish the rest of the buggy. I do have a regulator to let out the shocks so hopefully i can get this thing running soon.

Thanks for all the help.

Author:	fdv99 [ Tue Oct 20, 2009 12:38 pm ]
Post subject:	Chassis without rear torsion
Hello, I am new to the forum and am looking for advice, i have searched and called almost every buggy shop i could find a number for but have not found a good answer. I recently purchased a chassis that does not have a rear torsion bar, just trailing arms attached to the frame and a set of yarnell specialties nitrogen shocks to hold up the swing axles. My question is will these shocks hold up the buggy and support the weight. I like the idea of having a torsion bar so all the weight isn't on the shock, but do not want to go through the trouble of cutting up the chassis. The company yarnell specialties said they could add coilovers to the shocks for a reasonable price, what do you think? Any help is greatly appreciated .

Author:	Odyknuck [ Tue Oct 20, 2009 1:01 pm ]
Post subject:	Re: Chassis without rear torsion
The Shocks by themselfs are not designed to hold up the Buggy. They will need the coil springs. As I am not familair with the product I can not say if they will even hold the Buggy up with coils on them. A lot of the inexpensive Coil overs use helper springs on standard shocks and will not support the weight of the Buggy.

Author:	turboblue [ Tue Oct 20, 2009 3:05 pm ]
Post subject:	Re: Chassis without rear torsion
Is it a mid-engine chassis? Lot of those, mine drag buggy included, use a nitrogen shock only for the rear suspension. Some rear engine sand rails also had that setup. All were swing axle style. Shock shaft diameter were usually in the one inch range. Mine are Fox.

Author:	Odyknuck [ Tue Oct 20, 2009 3:44 pm ]
Post subject:	Re: Chassis without rear torsion
Gary it sounds like you have Fox air shocks (1 1/4" shaft). The ones he is using appear to be an emulsion shock. turboblue wrote: Is it a mid-engine chassis? Lot of those, mine drag buggy included, use a nitrogen shock only for the rear suspension. Some rear engine sand rails also had that setup. All were swing axle style. Shock shaft diameter were usually in the one inch range. Mine are Fox.

Author:	fdv99 [ Tue Oct 20, 2009 5:32 pm ]
Post subject:	Re: Chassis without rear torsion
Thanks for the replies, it is a rear engine chassis and i don't know who made it. I am going to try and get some work done on the buggy this weekend and maybe fill up the nitrogen shocks to test them. I was told from a guy at Dan's Performance Parts that they are good shocks and they are actually the ones he recommended before i told him what they were.

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Author:	Odyknuck [ Wed Oct 21, 2009 8:56 am ]
Post subject:	Re: Chassis without rear torsion
Did Dan tell you if they were air shocks or emulisons. fdv99 wrote: Thanks for the replies, it is a rear engine chassis and i don't know who made it. I am going to try and get some work done on the buggy this weekend and maybe fill up the nitrogen shocks to test them. I was told from a guy at Dan's Performance Parts that they are good shocks and they are actually the ones he recommended before i told him what they were.

Author:	fdv99 [ Wed Oct 21, 2009 5:23 pm ]
Post subject:	Re: Chassis without rear torsion
Odyknuck wrote: Did Dan tell you if they were air shocks or emulisons. I'm not exactly sure what emulsions are, but he said they were nitrogen shocks and to fill them with pure nitrogen until i get the desired ride height.

Author:	turboblue [ Wed Oct 21, 2009 7:46 pm ]
Post subject:	Re: Chassis without rear torsion
fdv99 wrote: Odyknuck wrote: Did Dan tell you if they were air shocks or emulisons. I'm not exactly sure what emulsions are, but he said they were nitrogen shocks and to fill them with pure nitrogen until i get the desired ride height. Look something like these? Thse are Marvin Shaw shocks but very similar to my Fox nitrogen shocks.

Author:	fdv99 [ Wed Oct 21, 2009 8:59 pm ]
Post subject:	Re: Chassis without rear torsion
yes, those are the ones. turboblue wrote: Look something like these? Thse are Marvin Shaw shocks but very similar to my Fox nitrogen shocks.

Author:	Odyknuck [ Wed Oct 21, 2009 9:23 pm ]
Post subject:	Re: Chassis without rear torsion
Ok so they are air shocks and not emulsions. Thanks for the clarification.

Author:	turboblue [ Thu Oct 22, 2009 11:25 am ]
Post subject:	Re: Chassis without rear torsion
Odyknuck wrote: Ok so they are air shocks and not emulsions. Thanks for the clarification. Not exactly air shocks in the normal sense but are designed to hold a light buggy up and are usually the total suspension. Takes a nitrogen tank and regulator to adjust the pressure in the shocks. I have 180 PSI in the rear shocks of my drag buggy and it sits level. I had a mid engine sand buggy back in the day with the MS shocks on it. Had about 250-270 PSI in those. It was a sand only buggy though.

Author:	fdv99 [ Thu Oct 22, 2009 1:39 pm ]
Post subject:	Re: Chassis without rear torsion
Ok one more question, this will be a woods buggy with 95% of the time being on trails. It is a fairly light rail i believe (me and my dad picked up the frame minus motor and trans. and placed it on the trailer no problem), and probably 100-110 inch wheelbase. How much pressure can these shocks handle and what would be a good pressure to initially fill them with to ensure it will be enough? (i can let the pressure out if it is two stiff or the height is off) again thanks for the help! turboblue wrote: Takes a nitrogen tank and regulator to adjust the pressure in the shocks. I have 180 PSI in the rear shocks of my drag buggy and it sits level. I had a mid engine sand buggy back in the day with the MS shocks on it. Had about 250-270 PSI in those. It was a sand only buggy though.

Author:	turboblue [ Thu Oct 22, 2009 5:52 pm ]
Post subject:	Re: Chassis without rear torsion
fdv99 wrote: Ok one more question, this will be a woods buggy with 95% of the time being on trails. It is a fairly light rail i believe (me and my dad picked up the frame minus motor and trans. and placed it on the trailer no problem), and probably 100-110 inch wheelbase. How much pressure can these shocks handle and what would be a good pressure to initially fill them with to ensure it will be enough? (i can let the pressure out if it is two stiff or the height is off) again thanks for the help! turboblue wrote: Takes a nitrogen tank and regulator to adjust the pressure in the shocks. I have 180 PSI in the rear shocks of my drag buggy and it sits level. I had a mid engine sand buggy back in the day with the MS shocks on it. Had about 250-270 PSI in those. It was a sand only buggy though. Usually 250-270psi should be sufficient. Only problem is you need the regulator to let them down. They don't hold enough volumn to let them down like a tire. One pffft on the valve and it will go from 250 to 100 instantly. You need to get it equipped and ready to go then add the nitrogen. Have someone in it that is similar in weight to adjust ride height. Be forwarned they do ride rather stiff when the PSI is in the upper ranges. Nitrogen shocks are better suited for a sand buggy than an off road buggy IMHO.

Author:	fdv99 [ Thu Oct 22, 2009 6:22 pm ]
Post subject:	Re: Chassis without rear torsion
I don't mind a stiff ride, just wanted to make sure it would work. I think i will send the shocks back to Marvin Shaw and have them rebuild them and put coils on them while i finish the rest of the buggy. I do have a regulator to let out the shocks so hopefully i can get this thing running soon. Thanks for all the help.

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Author:	turboblue [ Fri Oct 23, 2009 6:46 pm ]
Post subject:	Re: Chassis without rear torsion
fdv99 wrote: I don't mind a stiff ride, just wanted to make sure it would work. I think i will send the shocks back to Marvin Shaw and have them rebuild them and put coils on them while i finish the rest of the buggy. I do have a regulator to let out the shocks so hopefully i can get this thing running soon. Thanks for all the help. If those shocks are as pictured they probably can't convert them to coil overs. They outside of the body is usually threaded on c/o shocks.