Jasper 400 jig for metric users

[gfinlayson]

I had an e-mail today asking about the flush mounting of drivers in my recent SP93 project.

I used a Jasper 400 jig, but being in England getting hold of imperial router and drill bits isn't as easy as getting hold of metric stuff. And being born in the age of the decimal, I find imperial measurements difficult to work with.

To make my life easier, I calculated a conversion table using Microsoft Excel to use the Jasper 400 with a 6 mm metric router bit. I also found that a 3.2 mm drill bit works fine for the guide pin instead of the 1/8" recommended by Jasper Audio.

Anyway, for those who might find it useful, here's the Excel spreadsheet, and an image of the spreadsheet for those who don't have Excel.



http://www.gfinlayson2.pwp.blueyonde...conversion.xls

http://www.gfinlayson2.pwp.blueyonde.../jasper400.jpg

[lufbramatt]

nice work

I noticed youre in aylesford- i spent all last summer working for an office furniture company behind the audi/volkswagen garages there doing deliveries- which is funding my current speaker project

checked your profile- youre into mountain biking? whereabouts u ride? I can be spotted most weekends (when im at home) cycling over the north downs on my orange evo2

small world hehe

[gfinlayson]

I do most of my riding around the North Downs, although there's also some good riding around Mereworth Woods, and plenty of other stuff around other areas of Kent.

Travel with my job sometimes takes me to South Wales or the North West, so I get the odd ride at the likes of Cwm Carn, Afan Argoed, Delamere Forest or Cannock Chase, and I occasionally get up to the likes of Coed-y-Brenin.

I have to confess, the motivation for mountain biking has been sadly lacking this winter, hence the recent speaker building projects. You'll know yourself just how bad the mud on the North Downs is this time of year, especially with all the MXers on Pilgrim's Way and parts of the North Downs Way.

I'm off to Scotland for a couple of weeks mid June with friends, so I need to start riding again pronto.

[lufbramatt]

nice

yeah i know the feeling- especially with the chalk giving some of the trails a nice ice-rink quality in the wet. Ive not done any cycling since christmas due to too much coursework at uni, but im gonna get out loads over easter hopefully.

Ive been on a couple of trips to the mtb'ing meccas in wales- out of all of them i enjoyed nant y-arain the most, not as big as brenin but much more flowy and swoopy Afan was good but cost us a fortune in brake pads! dunno what they put in the mud there . . .

[gfinlayson]

Cwm Carn is reputedly hard on brake pads in the wet, but I always use sintered pads, so I haven't found it too bad.