Ko Propo

[filmoor]

Hi Guys this my have been asked before but can the Ko Propo Esprit type R 40meg be converted easily to a 2.4ghz setup any info will be a help.

cheers

[sosidge]

Not easily.

Horizon Hobby UK used to offer a conversion where the would cut the back out of the radio to fit a Spektrum module. No idea if they still do.

Bear in mind that there is nothing wrong with a crystal radio - I still run crystals in my Futaba gear, it works perfectly and you rarely have to change crystals these days as 95% of racers are on 2.4.

[jim76]

there was a guy called Pete i think who converted them for around £10 + the cost of a module. He mounted the ariel inside so it was really neat and avoided breakages.

Contact Alec Springer and he may be able to put you in touch with him as he knows the guy well.

[filmoor]

Cheers guys. The reason I ask is that I am suffering interference even though no one else in the room is on the same frequency. I am trying a new xtal set this weekend and I have re-routed the rx aerial. If this dosent help a new tx aerial will be the next step, then I will look at 2.4ghz rework. I think the interference is to do with the location not another racer/member.

[arransmith27]

Your problem may be the installation of your electrics in the car.

Are any of the power leads from the speedo anywhere near your receiver?

Let us know what electrics and car you are running.

[filmoor]

New tx crystal and an improved rx installation, results no radio interference. Thanks for the info guys

[Cardnim]

I have just converted my KO Propo Esprit II to 2.4ghz from 40Mhz.
Easy enough to do, and low cost.

The new reciever is tiny too, and has almost no aerial, which I was really sceptical about, but no range issues at all - infact, its way better and more consistent than my old 2.4Ghz system!

Nice

[kek23k]

Cardnim, what module did you use to do the conversion? Was it the Sanwa or a KO module? Did you follow a guide or something? Cheers x

[Cardnim]

I used the new FrSky "Hack" module.
This fits into any existing module based system and converts it to 2.4GHz.
To do it, I used a number of things - I used the excellent guide on here written by Damian Gibbs, and a couple of YouTube videos of others converting different handsets using the same hack module.
I basically took the best from all of these to make my own conversion which I think is the nicest of them all.
Damian's is awesome, but at the end, he drills right through the front of the TX and also mounts his module in an awkward place inside the TX. I found that the module locates much better in the void left by the 40Hz module, and the holes for the bind button and LED are better located on the top in front of the aerial.

All in, Im really REALLY happy with the conversion, and Ive already had another couple of KO owners asking me to do theirs too - and now a Sanwa guy is asking me for the same.

The FrSky is a really good system, 1.5km range (!) 2" aerial so it doesnt even need to come out of the car and a very small receiver, but its all easy to bind, setup and uses the latest FHSS so the chance of any interferance on the band is virtually eliminated.
It also has a really nice built in failsafe for any nitro users out there.

Hope this helps.
If you need anything else, please just ask or PM me.

[Cardnim]

Should just say - make sure you use the NEW FrSky hack module.
The old one has a reliability issue with the signals sent across the PPM rail. The new one gets round this with a clever use of a diode.
Dead easy to spot which is which - jsut look for the diode.

HTH

[kek23k]

Sweet thanks for the info, very helpful