DPRG mailing list archives: [DPRG] semi-OT: sealed case VS conformal coating

Wed Jan 9 16:13:19 CST 2008

I HAVE ON HAND TECHSPRAY BOTH FINE-L-KOTE SR, AND HT. BOTH ARE SILICONE
BASED.

WE COAT BOARDS THAT ARE SUBJECTED TO 125 C, AND 85/85.(85C, AND 85%RH.)

IF YOU DONT WANT TO BUY SOME, I WILL LET YOU HAVE SOME OF MINE. ALL YOU HAVE
TO DO IS COME TO A  TUES.

NITE AT THE WORLD HQ OF DPRG.

WE WILL HAVE TO BAKE THE BOARD  FOR A WHILE TO DRY, SO COME EARLY.

I AM ALMOST ALWAYS THERE.

GRAND POO POO OF THE BUILDING,

MIKE DODSON

On Jan 9, 2008 3:22 PM, Sluggy! <sluggy9912 at swbell.net> wrote:

> Greetings, all!
>
> I am looking to convert a motorcycle to EFI and one of
> the problems with a) DIY EFI and b) motorcycles is
> protecting the circuit board.
>
> Before I get to my question, some background. See
> http://www.megasquirt.info for copious details; btw,
> do NOT go to megasquirt.*COM* in the presence of
> anyone easily (or not so easily) offended. Anyway, the
> MegaSquirt unit is an open source electronic fuel
> injection controller that is quite purposefully
> extremely generic. This requires lots of tinkering and
> experimenting, so I'm on board for it. See also
> http://www.msruns.com/ for lots of inspiration and
> real world problem solving from people who have made
> it work.
>
> So, to get to my question.... the unit, as designed,
> is intended to be in the passenger compartment of a
> car, with wiring that traverses the firewall to
> connect to the various sensors and actuators in the
> engine bay. On my bike (and in fact, most bikes) there
> is no equivalent safe place for an exposed circuit
> board.
>
> The market has responded to this need with a nifty
> prebuilt controller that is substantially smaller and
> in a sealed case, but that is $150 more than the
> u-build-it kit and since the rest of it is going to
> add up, too, I'd like to at least try it with the kit
> first anyway. To that end, I ordered one today.
>
> When I said earlier that there is no equivalent safe
> place on my bike, that's not 100% true, but the place
> where the box will fit is under the rear of the seat.
> It is probably safe-ish from rain, but it's very dusty
> in there and a piece of paper (proof of insurance)
> kept n there is all wrinkly as if it's been wet,
> though probably from condensation rather than a
> deluge.
>
> So, I need to protect the electronics. Some people on
> the MegaSquirt forums have used conformal coating.
> Does anyone here have experience and/or suggestions
> for DIY conformal coatings?
>
> My other option will be to enclose it in a sealed
> container, which I'm kinda on board with anyway,
> coating or not. Unfortunately, a sealed box will
> likely be larger than the 6x6x1 space I have under the
> seat.
>
> Thanks,
>
> Sluggy!
>
> ---
>
> "The idea that unicycling is intrinsically funny does not explain the
> findings." Professor Sam Shuster.
> _______________________________________________
> DPRGlist mailing list
> DPRGlist at dprg.org
> http://list.dprg.org/mailman/listinfo/dprglist
>
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