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 Post subject: My 2007 Joyner 250 SV chassis up grade
PostPosted: Tue Feb 14, 2017 8:27 pm 
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I all ready have a thread of what I am doing to the engine, so I thought I would start a new one for the chassis. I picked this one up for $500, so I knew that I was going to have to spend some $$s to get everything up to snuff.

The first thing I have to replace are the front end ball joints (which I have). One is totally shot and the others aren't far behind. Logic tells me that they should be greased, but since there is no boot, they will collect grit. So what do you folks do, do you oil them or grease, then wipe the grit away? I just can't imagine running them dry.

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2005 Hammerhead 150 -
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, 10G rollers, 1500 Contra Spring, 20,00 Clutch Springs

6-Dirt Bikes, Baja Bug and enough toys to keep me out of trouble (maybe)

Just added 2007 Joyner 250 SV let the fun begin.


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 Post subject: Re: My 2007 Joyner 250 SV chassis up grade
PostPosted: Wed Feb 15, 2017 1:42 am 
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PGH, I was rereading your build thread and you had new a-arms built and boxed. Is that something that you would recommend? What about the rear trailing arms? That is something I am used to doing on VWs, so it wouldn't be a big deal for me. It just seems that one kiss from a rock or Joshua tree would ruin your day.

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2005 Hammerhead 150 -
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, 10G rollers, 1500 Contra Spring, 20,00 Clutch Springs

6-Dirt Bikes, Baja Bug and enough toys to keep me out of trouble (maybe)

Just added 2007 Joyner 250 SV let the fun begin.


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 Post subject: Re: My 2007 Joyner 250 SV chassis up grade
PostPosted: Wed Feb 15, 2017 8:39 am 
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Location: De Soto MO
I have gusseted the front lower control arms. This does make them a lot stronger but the problem is you now move the fail point to another area. In my case it was the heim joints at the body. The rear control arms aren't too bad. I have only damaged one and that was nasty multiple roll over on a hill climb.

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 Post subject: Re: My 2007 Joyner 250 SV chassis up grade
PostPosted: Wed Feb 15, 2017 10:11 am 
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My lower arms are now rock solid. Unlike Papa Rich, my weakest point has moved to the upper a-arms and joints have held. The uni balls holding the spindles came in different configuration based on where you buy them. Some have a grease hole in the body allowing you to add a zerk fitting to your arm. I flush mine once a year and inspect for slop and then pack both sides with grease.

I have not had problems with the trailing arms but have replaced plenty of axle stub bearings. Even the guys running 500's seem to have to good luck, so I think they are strong enough.

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 Post subject: Re: My 2007 Joyner 250 SV chassis up grade
PostPosted: Wed Feb 15, 2017 6:09 pm 
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The uniballs I got from MPS have the holes, so I will be adding zert fittings.

_________________
2005 Hammerhead 150 -
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, 10G rollers, 1500 Contra Spring, 20,00 Clutch Springs

6-Dirt Bikes, Baja Bug and enough toys to keep me out of trouble (maybe)

Just added 2007 Joyner 250 SV let the fun begin.


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 Post subject: Re: My 2007 Joyner 250 SV chassis up grade
PostPosted: Thu Feb 16, 2017 2:08 am 
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You might also check out Joyner Greece. At one time I know they sold shims, for the ball joints. I made some for my Joyner to remove the slop. I also did the steering box box mod, with brass bolts, and jam nuts.

Greg

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 Post subject: Re: My 2007 Joyner 250 SV chassis up grade
PostPosted: Fri Feb 17, 2017 3:00 pm 
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GMANLV wrote:
I also did the steering box box mod, with brass bolts, and jam nuts.

Greg


Can you point me to a thread on this topic? Also, how are the quality of the rear axle and CVs? Can they take more angelarity when adding longer shocks? I was thinking about picking up a set as spares.

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2005 Hammerhead 150 -
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, 10G rollers, 1500 Contra Spring, 20,00 Clutch Springs

6-Dirt Bikes, Baja Bug and enough toys to keep me out of trouble (maybe)

Just added 2007 Joyner 250 SV let the fun begin.


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 Post subject: Re: My 2007 Joyner 250 SV chassis up grade
PostPosted: Sat Feb 18, 2017 12:35 am 
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if you go to the How To Section you will see the thread i did on the steering box. As Gman said use brass screws, I changed over to brass all-thread cut to the length needed for the lock nut instead of the way I originally showed. I also have posts on the front suspension. I do not lube my front ball joints, only wash them out with soap and water because the original and replacements I use are self lubing.

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2014 DS 500 HO Sand Viper
08 Joyner 250 sand viper
Now with a Polaris 500 HO engine
Single, centered seat, and controls
Custom length Fox 2.0" coilovers
758 lbs. (w/no gas)

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