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-   Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)
-   -   Lapping Table's (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/lapping-tables-34803/)

j9fd3s 03-03-2004 09:57 AM


Originally Posted by MPM' date='Mar 3 2004, 04:57 AM
j9fd3s - I've never seen Racing Beats table. I thought they had a big one that would do multiple plates? Ours only does a single plate at a time.

it might be bigger, i didnt look too closely at it, but it does look a lot like yours

Apex13B 03-03-2004 07:09 PM

you can lap by hand if you dont mind getting dirty, and your forearms will be huge like mine

pengaru 03-03-2004 07:37 PM

they all look pretty similar, it's a simple machine.... the principal is the same on the larger machines, just has multiple spots for housings to be attached for lapping more than one at a time.



they're messy machines too.

setzep 03-03-2004 07:40 PM

The one we have at work is about 3x's that big and is made for resurfacing rotating groups for hydraulic piston pumps. I don't run it myself but I think they just rely on it spinning and don't add any weight onto the part that gets lapped. Maybe I should try and get some pictures.

banzaitoyota 03-04-2004 02:01 PM

I ude a semo-local company near me, Stahli USA. All they do is lapp. They provide graet serrvice at a reasonable price.

banzaitoyota 03-04-2004 04:31 PM

The key to any precision-machine tool is accuracey and repeatability. LAPPING BLocks are heavy-mo-fos. they need to be in order to hold the dimensional tolerances the are expected to produce.



The lapping table pictured is undersized for lapping an iron, (Note: I am not picking on tha mans tool, just making an observation). That block is very thin (relatively) compared to the iron it is meant to lap. The lapping machine that I have seen used has a block that is ~12" thick. It needs to be thick so that it doesn't flex and it maintains dimensional stability.


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