I bought a piece of polyurethane that is 3" dia. X 6" long. It is 80 hardness which is a little softer than a hockey puck that is 90-95 hardness depending who makes them. I will need only 2.75", if you would like to purchase the remainder I will do it 35.00 shipped. It cost me 60.00 and some change so not looking for a profit.

How are you machining it?

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02 SSEi-Turning money into tire smoke, very efficiently.

Most likley chuck it up in a lathe

Be careful. I dont know if you have any experience machining rubber, but it might not work how you expect.

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02 SSEi-Turning money into tire smoke, very efficiently.

Actually never machined rubber, its hard enough that I should be able to cut the length with a chop saw, then i had planned to bore the hole on a lathe. Yes, no?

If its softer than a hockey puck, its gonna grab like hell. Do some googling on machining rubber before trying it. Id be more specific if I didnt just realize how much of a hurry Im in.

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02 SSEi-Turning money into tire smoke, very efficiently.

Just drill a hole. Dont machine one. I drilled a 1/2" hole through my metal sandwiched vulcanized rubber mount, no problem. It was much softer than a hockey puck.

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I didn't have a problem machining my hockey pucks - I used a very sharp tool with a wider cutting edge and went slow, under 600 rpm I think, with the feed on manual. I had to hold it in a piece of exhaust pipe that fit them perfectly. A 3" ID coupler should work.




Machining it is the best way to get a squared part with a hole in the center when you want to control the tolerances and want it to look pretty. I'd machine it if I was ever going to look at it again.

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If you google machining it, it looks like the speeds are higher than I would think and the feed rates also. Yes, I want it to look right. I' m hearing hear where I work we don't have tooling to do this. Might have to do it with a band saw and drill press, I'll see

Thats how I did mine. No special tools needed.

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well chop saw won't work, I tried to square one end by taking off a 1/16" and it just gums up, way to fast cutting. We have a horizontal cut off band saw with coolant that should work.

I had issues with gumming up the pucks at higher speeds, the tool got too hot. I'd think the PU would be the same; for using a saw, low speed with a coarse sharp blade? The coolant should help, but the soft stuff cuts really easy and will quickly plug up a fine blade (and then start to get hot and gum up).

_________________
Boost addict


The Fleet:
'93 SSEi - Twincharged + manual Build thread
'97 Camaro - Top swap
'05 STS - V8, AWD, her DD
'92 Trofeo - Fair weather DD
'99 Montana - top swap 3800
'04 Sierra 2500HD - LLY Duramax

Current project:
Something cool, trust me.

Upcoming projects:
'92 Bonneville SSE
'87 LeSabre T-type
'67 LeSabre

Gone to greener pastures:
'84 Sierra Classic - Twin turbo 3800
'97 LeSabre - Top swap

RIP:
'86 LeSabre - pictures
'93 SE - L67

Deano, when you get it installed if you don't have very much vibration I would probably be interested. I'm getting a little sick of the vibration with the pucks.

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-Car Guy Carl
"Penelope" - 2003 SLE - 247k Miles
"Sydney" - 2000 Honda S2000 - 98k miles

ok, will let you know

well I tried to cut it in a small woodworking bandsaw and like yourgrandma said and it grabbed it and broke the blade, today the horizontal bandsaw was out and it worked like a charm with coolant. I have one that is 3 1/4" L and one thats around 3 1/16" with the washers and a 5/8" thru hole.

Does anyone know how long of a bolt is needed including the bushings on the bottom side?

8" bolt will be more than enough, depending on the length of your mount, 7.5" might work too. Might not hurt to get both, and return the one you don't end up using.

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Bye Bye:

RIP sandrock

Thankyou

Is the bolt 1/2" or 5/8"? For some reason I thought 5/8" but sure doesn't look like it. Also what are you guys using for a bushing at the underside? I looked at Autozone today and all they had looked like a 3/8" thru hole and they came in packs of 8.