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Re: Twin rotor innit

Posted: Mon Jan 06, 2020 7:13 pm
by red5
So, 5 min on charge after resting over Xmas and...

Braaappppp

Re: Twin rotor innit

Posted: Mon Jan 06, 2020 7:55 pm
by red5
I'd upload a pic but got odd error message...

Re: Twin rotor innit

Posted: Mon Jan 06, 2020 8:11 pm
by Hooli
What error message?

Re: Twin rotor innit

Posted: Mon Jan 06, 2020 8:58 pm
by red5
As shown.

Re: Twin rotor innit

Posted: Mon Jan 06, 2020 10:54 pm
by Hooli
Oh odd, it must be to do with the client side resizing I enabled a few weeks ago. I'll see what I can find on the admin support forums.

Is that the default web browser on Android? I use Firefox mobile on my phone & it works fine.

Re: Twin rotor innit

Posted: Mon Jan 06, 2020 11:26 pm
by DodgeRover
Opera on Android worked fine for me tonight with an oversized picture.

Re: Twin rotor innit

Posted: Tue Jan 07, 2020 9:21 am
by CLINT
Try it again when it's cold...

Re: Twin rotor innit

Posted: Tue Jan 07, 2020 11:25 am
by SiC
CLINT wrote: Mon Oct 28, 2019 11:12 pm I always thought that uprated coil packs and starters were just put on to squeeze a bit more life from worn engines or is that just pub talk?
These engines need to be spinning quickly with a strong spark to get started. They also chuck huge amounts of fuel in when cold (well, in general too), which is why you get issues if you try cold restarting as the plug gets soaked & flooded. Both a weak coil and a weak starter means longer cranking with more fuel washing the sidewalls down of oil. Also a weaker coil can lead to the plug being more likely to get flooded. Weak coil also leads to less efficient running and more likely to be running rich.

A couple of times I pushed my luck and got the engine flooded on mine on cold restarts. I eventually cleared them by foot on the floor (disables fuel pump) and a lot of cranking to try getting the fuel out from the cylinder. Once you get one rotor firing, the other often comes alive not to long after. I remember the last time I did it, shortly before I sold it, I managed to get one rotor running bump starting going down hill. However with the other still trying to run, foot down on the floor and got an incredibly impressive smoke cloud out the back. Thick enough that you couldn't really see through it. Probably killed a couple of Polar Bears and Thunbergs.

Also there was manufacturing issues with the starters in the RX8 build cycle and them going weak + failing prematurely. Coils get a harder life as they're firing a lot more often than a reciprocating engine for a similar rpm.

Problem is, many people only get those parts looked at when they start having problems. At which point the engine is likely to have been worn from the above and also from age.

Loss of compression on the Rensis appears not from Apex seal wear but either them getting stuck in their holders from carbon build up (usually not driven hard enough) or cylinder wall wear. Carbon build up isn't helped by the low fuel consumption and people driving it lightly. It can be helped a lot by driving it harder and getting toasty hot.

So yeah they can help a worn engine because the engine has probably got worn from the weak starter and coil, or just because it's not brand new. Iirc Mazda expected them to need a rebuild around the 120k mark.

Re: Twin rotor innit

Posted: Thu Jan 09, 2020 11:04 pm
by red5
rx83.jpg
rx83.jpg (233.59 KiB) Viewed 4471 times
At rest, unsurprisingly the fuel light was on. However, there is a more pressing need...

Re: Twin rotor innit

Posted: Thu Jan 09, 2020 11:07 pm
by red5
rx81.jpg
rx81.jpg (145.55 KiB) Viewed 4471 times
Eml is on. Hmm.

Ah. Quelle surprise...