I am pretty sure d&d says keep the motor temp below 220f. I know that all of their motors have the same rating. They give that temp with compensation for hot spots. So 220f is not a damaging temperature for any one spot. I used a thermal temp gun you buy at autozone or the hardware store for $20. I monitor the temperature on many runs including summer heat. Highest reading I had was 185f so I dont check often now. One thing I noticed is at around 200f you will smell a hot motor smell. With the 1/4 20 holes... is this the mounting holes for the cooling hose plate? Or are they the inlet size holes for air to move through to cool the motor. The first motor I tried had an outlet for air about 1/4 by 1/2 and was not nearly enough. The side of the motor with the holes is going to let enough air out, but how big is the inlet?
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-------- Original message --------
From: "jerry freedomev via groups.io" <freedomev@...>
Date: 5/16/20 10:51 AM (GMT-05:00)
Subject: Re: [c-car] Replacement motor, cooling
Hi Dave and all,
Get a temp gauge and know for sure.? What max temp does the label say? ?? Likely 180F plus.
? Jerry?
On Saturday, May 16, 2020, 07:46:43 AM PDT, Dave Brice <dbrice3721@...> wrote:
I was still nervous I was going to get too hot. The inlet was an easy adaptation. 2x 1/4-20 holes tapped. And a few holes to allow airflow.?
On Thu, May 14, 2020, 6:07 AM jerry freedomev via <freedomev=
[email protected]> wrote:
Hi Dave and All,
? These EV motors run very hot to the touch which cooks at just 130F.? So if you can touch it without being burned, it is very good.
Adding say a computer fan or 2 blowing air onto it and available in 48vdc isn't a bad idea.? MPJA electronics surplus in Palm Beach? is a source and online catalog. ? I get switches, fuse holders, DC-DC, etc from them too.
Jerry?
On Wednesday, May 13, 2020, 05:29:02 PM PDT, Dave Brice <
dbrice3721@...> wrote:
And it works great! I took a 15 mile run and was flawless,? but I think I'm going to ass the cooling to it. Its warm-hot. Outside is still pretty cold around here.? Seems worth it for an hour or two of work for piece of mind.?
All I can say for sure is its 114-115inches. long. Going for a test drive soon. Installed fast.?
I have a suspicion that it may be the same cable as used on a 1976 Pacer.? I replaced the speedo cable in my 1976 Citicar at one point, but no longer have the reference number for the ¡®original¡¯ vehicle.? Some parts for C-Cars were originally sourced as stock parts for small cars of the era, such as brake master cylinders.
Tom Keenan
Well, I couldn't find a cable nos, and I found one through Facebook, used that had a funny end compared to mine that was expensive. so I got to visit a nice place named Bob's speedometer about 45 minutes from here.? It's a shame it's a quarantine state right now, as I bet Jeff the fellow who is making it is a wealth of information,? but conversation is short now. My cable is being built tomorrow for close to $150.? Bit more than I expected,? but didn't? think I'd have to go the custom built route, so it seems fair, and less than that used one was offered for. Maybe have it installed tomorrow.?
I would suggest if you add the speedo option to this motor have d&d leave the shaft out the front but leave only 1/2 inch. Then have them drill a centered hole to fit that arctic cat speedo adapter.? That's easier than what I did but someone had to try. Lol. Luckily I have the tools and resources to do a bit of stuff myself. There are still 3 speedo shops in a relatively close distance to me still in operation. I'll make some calls soon if I can't find a used one.?
Speedometer was more complicated, but it should work if I can locate a cable. It's about 114"? I bet it fits something else and can be bought off a shelf somewhere but I'm striking out so far. Might have to go custom built cable. For the moment I'm using my phone GPS speedo and its ok till I find a cable.?
That's great Dave,
? ? ? How did the speedometer work?
What HP is the motor rated at. I'm close to buying one too.
--
Cheers
Tony P
1980 Orange Comuta-car
Nicholas Gee