emachineshop.com
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Hulken
- Posts: 131
- Joined: Fri Jan 16, 2009 1:46 am
emachineshop.com
Been looking at this page, and thinking of ordering some of the parts needed for the front end renovation og my 412. Anyone done this before? They have several types of delron, aluminum, steel and so on. Do any of you out there have drawings for the different parts, since I don't have any spare front end to measure yet.
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Bill K.
- Posts: 563
- Joined: Mon Oct 27, 2003 10:50 pm
Re: emachineshop.com
Having done delrin bushings for the front and rear control arms, I know what it takes to get a good fit. I don't advise doing this "double virtual" - not having direct access to the parts and the shop.
If you have a "validated drawing" - one with all the dimensions well established and manufacturable - then using a virtual shop may work out.
If you have a "validated drawing" - one with all the dimensions well established and manufacturable - then using a virtual shop may work out.
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raygreenwood
- Posts: 11907
- Joined: Wed Jan 22, 2003 12:01 am
Re: emachineshop.com
Bill is correct. I have made and fitted all the parts several times. You need to be able to speak to the machinist and be very circumspect about material specification.
For instance....the delrin control arm bushings are childsplay for and machinist. Make sure they are glass-filled delrin for best results but both regular and glass filled work fine. Almost all control arm bushing bores are slightly oval. I'm assuming this was to impart tension to the pressed in bonded rubber and steel bushing carrdige that is stock. So...you need to have theushing halves made oversized so you can clearance them by sanding for exact fit.
There are several methods I use for making the radius arm bushings...all work....all are different materials or combos. Every front end has slightly different best radius arm bushing thicknesses.
Also....both of these bushing sets can be "cast" at home from readily available urethane casting compunds for a quite satisfactory part.
I am about to be on the road this week. When I get back Friday, I can post several sets of drawings and measurments. Ray
For instance....the delrin control arm bushings are childsplay for and machinist. Make sure they are glass-filled delrin for best results but both regular and glass filled work fine. Almost all control arm bushing bores are slightly oval. I'm assuming this was to impart tension to the pressed in bonded rubber and steel bushing carrdige that is stock. So...you need to have theushing halves made oversized so you can clearance them by sanding for exact fit.
There are several methods I use for making the radius arm bushings...all work....all are different materials or combos. Every front end has slightly different best radius arm bushing thicknesses.
Also....both of these bushing sets can be "cast" at home from readily available urethane casting compunds for a quite satisfactory part.
I am about to be on the road this week. When I get back Friday, I can post several sets of drawings and measurments. Ray
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Hulken
- Posts: 131
- Joined: Fri Jan 16, 2009 1:46 am
Re: emachineshop.com
My biggest problem here in Norway is getting a small amout of the right material. On the webpage they have lots of different materials to choose from. Maybe I could order them oversize and do the fine trimming in my garage. Would appreciate drawings Ray, You have my email adress?
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raygreenwood
- Posts: 11907
- Joined: Wed Jan 22, 2003 12:01 am
Re: emachineshop.com
Send me a PM just in case. I will be out of town until Saturday. A lot of this can be done at home. If you can get short pieces of oversized delrin you can core it first on a drill press. Then lock a shaft or spindel through the center and while spinning on a drill motor, shape it with sanding and a file.
The issues with the radius arm bushings are that the stock dimensions work gerat if you are using a material the same durometer or hardness (40-50). If you use urethane...I suggest nothing over 60-65 duro...and because it compresses less...you need to start a little thinner or else the compression rate could crack the center area on the sub-frame.
The centering ring that is under and between the two radius arms bushings on each side...can be shaped at home from rod stock with a drill and file. Ray
The issues with the radius arm bushings are that the stock dimensions work gerat if you are using a material the same durometer or hardness (40-50). If you use urethane...I suggest nothing over 60-65 duro...and because it compresses less...you need to start a little thinner or else the compression rate could crack the center area on the sub-frame.
The centering ring that is under and between the two radius arms bushings on each side...can be shaped at home from rod stock with a drill and file. Ray