CPR units

[gingerboy98]

I have recently bought a car that had a cpr unit in it.

I know absolutely nothing about these so wondered if you chaps could help me. With some questions.

1) Do they only work with Adspec handsets?

2) What are the motor turn limts?

3) How do you set them up?

Also I recieved an adspec controller, can anyone tell me whayt batteries they take, or do the batterires go into some sort of tray? The connectors dont make it obvious...or at least not to me.

Cheers

Si.

[WillyChang]

quote:

Originally posted by gingerboy99

1) Do they only work with Adspec handsets?

---

id="quote">id="quote">

No, they are standard AM radio gear.

quote:2) What are the motor turn limts?

id="quote">id="quote">

Depends which model you've got... is it 100, 140 or 160? These are its ratings in Amps.

quote:Also I recieved an adspec controller, can anyone tell me whayt batteries they take, or do the batterires go into some sort of tray? The connectors dont make it obvious...or at least not to me.

id="quote">id="quote">

I think there's a few models out there, not sure about which uses what. Believe they are interchangeable with Futaba equipment as far as battery-holder goes.

[mr_lister999.]

quote:3) How do you set them up?

id="quote">id="quote">

All i did with mine is turn on the car and transmitter and adjust the trim on the throttle until the wheels stopped. There was no adjustment screws on the control that i could see so was the only option.

[WillyChang]

If using a Futaba TX, all you do is centre all the trims and it should be right. There is no programming or adjustment needed for the CPR.

Other brands might define 'centre' differently.

[gingerboy98]

Right then,

After a bit of checking I have CPR unit 100, so that would make the motor limit what?

Also am I to understand then that the Adspec controller has some sort of battery bay that comes out of the controller as opposed to loading batteries into it directly like nay normal hand set? If this is the case, anyone know where I can get one of these from? []

[njmlondon]

The 100 was actually the recommended CPR for the Avante, and the Avante came with a Technigold so I believe it can handle that. I dont know how much more poer it can take though.

As for the transmitter - I have a more modern one but it looks identical to the early ones and the batteries in mine are in the flat bottom of the handle... acts as a sort of counterbalance too so it works quite well - just have a look around the bottom and you should see a release catch.

[WillyChang]

If 100 really means 100A *continuous*, then we could compared to a modern ESC say:

Nosram Dominator which is fwd-only, says 75A and is rated "11 turn" minimum. Caveat being this has temperature protection, so manufacturer LRP might be a bit on a optimistic side. []

Nosram Tomahawk? This has reverse, rated 80A but this says "16 turn".

Futaba MC230CR rated at 20+ turns with max current fwd 90A rev 45A.

Nothing's ever clearcut, is it?? [8)]

[WillyChang]

quote:

Originally posted by gingerboy99

Also am I to understand then that the Adspec controller has some sort of battery bay that comes out of the controller as opposed to loading batteries into it directly like nay normal hand set? If this is the case, anyone know where I can get one of these from? [

]

---

id="quote">id="quote">

Post a pix of which Adspec you've got.

Are the AAs inside the handle stem or in the base?

Chances are your local Futaba dealer might be able to help.

[gingerboy98]

Thanks for the info chaps.

The batteries go in the base, no doubt about that, but there is the normal spring and contact point set up like in standard controllers, which is what I dont understand, there are just two contact points....I'll get some pics.

[DJTheo]

quote:If 100 really means 100A *continuous*, then we could compared to a modern ESC say

id="quote">id="quote">

Now way it is conitinuous, back then technology wasnt that advanced. Even modern top no limit winds ESCs give continous (5mins+) only around 50A, for 30sec around 100A and 1sec 1000A.

My guess would be that its dimensioned aorund the Technigold, cant go ower much lower than that and 100A are for 1sec max, so something comparable to a modern 18-20turns limit ESC.

Cheers

Theo

[bholio]

quote:

The batteries go in the base, no doubt about that, but there is the normal spring and contact point set up like in standard controllers, which is what I dont understand, there are just two contact points....I'll get some pics.

---

id="quote">id="quote">

Most likely, the batteries go into a separate battery case which connects to those 2 points.

Maybe one of these would fit? (Scroll down to the Futaba ones)

http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=MDH&P=7

I wish all of my transmitters had these. It would be so easy to move batteries from one radio to another. Most of mine transmitters take loose batteries.

[WillyChang]

quote:

Originally posted by gingerboy99

The batteries go in the base, no doubt about that, but there is the normal spring and contact point set up like in standard controllers, which is what I dont understand, there are just two contact points....I'll get some pics.

---

id="quote">id="quote">

If 'base', have a close look at the Futaba Magnum 2PK/2PKHA series.

These have a battery box that holds the 8 AAs side-by-side.

It looks a bit like this Airtronics (Sanwa) one, but its wired in.

When I nicaded one, I removed all the spring terminals except

the end pair. For better reliability I have 8 AAs tabbed and

packed in shrink wrap as a slab, with just the +ve & -ve terminals

on the extreme ends showing. These connect via the 2 remaining

Futaba spring tabs. Charged via the jack on the left side.

(so as I didn't lose the extracted spring tabs, worked out that

there was enough space in the pistol stem to store them in there.

Don't know if your previous owner was as consciencious?)

[gingerboy98]

Thanks for all your helps chaps, I think we might be getting somewhere, this is ceraintly the sort of thing that it takes I am sure, now I am off down my LHS t osee what he has that might fight.... I hope he has something that will fit!

[gingerboy98]

So here is the model adspec that I have:

http://www.tamiyaclub.com/showroom_model.a...id=10365&id=500

Anyone have any ideas on how the batteries are loaded?

[bholio]

From the showroom pictures, it look like this one will fit:

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXH351&P=7

[WillyChang]

Too easy! Any high street electronics store should be able to sell you a 8AA battery holder (2x2x2 cells), and I'd say for a lot less than the US$5 for the Futaba original. [8D]

Alternately you might want to build yourself a 8AA rechargeable pack. For the terminals just buy a 9V battery clip, glue it to the edge and wire it up "wrong" (red wire to -ve, black to +ve") to become the battery's terminals.

[gingerboy98]

Thanks for your help guys, with any luck I will have these working very soon.

whats the betting after this they are actually broken???[]

[WillyChang]

Very hard to break a radio, so you'd have to be really unlucky to have a busted one. Usual cause of frustration is not knowing what 'band' its on... so you don't know which xtals to start testing with (and no, have received TXes before with wrong band of xtal in it, so that don't make it easier either).

If you don't want to buy the 8AA holder first-off, find someone with any KO gun TX maybe you can borrow for a short while. They all use the 8AA holder, from the first EX1 to the current EXI Mars-R.