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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61328

poebe Topic Author Offline Stomping Around Posts: 316 Likes received: 268	info! page 4 / 5 www.dirt-burner...8EN%29.pdf
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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61330

Vwhelmot1 Offline No Guts No Glory! Posts: 5 Likes received: 5	The CPR p100f was supplied in the two Tamiya Complete kits. Attachments:
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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61333

Jonny Retro
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poebe wrote:
info!
page 4 / 5
www.dirt-burner...8EN%29.pdf

I don't see anything pertinent there, just an overview in the loosest general terms

I have a QD "Sports" chassis marked with a "27MHz TYPE 2" label with with print on red, and an A/B/C switch. Powering it up makes the steering chunter away from interference so I believe it's working fine.

I've tried it with a standard 2-ch 27mhz AM TX (Acoms technidrive) with all permutations of Xtal. My results were:

setting		
				A		B		C
band 1	brown		26.975	no response	no response	no response
split	brown/red	27.025	no response	no response	no response
band 2	red		27.045	no response	no response	no response
split	red/orange	27.075	no response	no response	no response
band 3	orange		27.095	no response	no response	no response
split	orange/yellow	27.125	no response	no response	no response
band 4	yellow		27.145	no response	no response	no response
split	yellow/green	27.175	no response	no response	no response
band 5	green		27.195	no response	no response	no response
split	green/blue	27.225	no response	no response	no response
Band 6 	Blue		27.255	no response	no response	no response

from this I conclude:
- the chassis electronics could have failed (strong possibility, I bought it cheap for the gearbox and front end);
- the TX could be duff (unlikely);
- QD radio could be FM (no way to test);
- Could still be AM, but operating in some different way from a standard 2-channel set.

I think you're going to have to find a QD transmitter with the A/B/C switch if you want to keep the QD electronics in the car.

Information on the QD electronics is very sparse, TBH the best info I found was an eight year old thread on here which concuded there was plenty of space for a servo, ESC & RX on the chassis & that was the best way to go.

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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61349

poebe Topic Author Offline Stomping Around Posts: 316 Likes received: 268	thanks for your response! good info. I think I'm going to try differently. I solder the 3 wires of the potentiometers and then I switch left / right and gas brake the potentiometers are adjustable so I think I will be able to find a zero point in gas brake and search for another transmitter
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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61397

poebe
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It worked.
I soldered the wires from one potentiometer to another and then adjusted with the set screw. works perfectly now!

The CPR-01 unit works fine on the 4.8v battery

During the modification I had connected an 8.4v adapter to the remote control, but then I got no response. only when I put the batteries in the remote did everything work properly on the 27.045mHz

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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61402

stingray-63 Away Moderator Posts: 14525 Likes received: 5359	That's perfect. You did a nice work. Congrats rcmodelstory.over-blog.com/ The following user(s) Liked this: poebe
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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61465

stingray-63 Away Moderator Posts: 14525 Likes received: 5359	www.ebay.co.uk/...3151935359 rcmodelstory.over-blog.com/ The following user(s) Liked this: poebe
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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61472

poebe Topic Author Offline Stomping Around Posts: 316 Likes received: 268	nice one!
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7255096 CPR-01 unit operating voltage 3 years 8 months ago #61474

stingray-63 Away Moderator Posts: 14525 Likes received: 5359	And the good period I am sure. Same rzdio than the tamtech 1/24. rcmodelstory.over-blog.com/
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