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» 2019 Llanfair TH Village Fete
Hyper 50 piston Empty2019-07-12, 18:53 by Rich

» Proposals for Model aircraft flying ( CAA registration) April 2019
Hyper 50 piston Empty2019-05-08, 17:49 by Gary M Jones

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Hyper 50 piston Empty2019-04-14, 15:36 by Roy

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Hyper 50 piston Empty2019-04-13, 16:49 by Roy

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Hyper 50 piston Empty2019-03-03, 23:44 by Charles E Cornes

Saturday 7/7/18

2018-07-07, 21:07 by Gary M Jones

I was at the field today between 14:00 & 15:00 all on my own , good flying too. There is a dead sheep along the fence line towards the gate from the pits, I saw the farmer so reported this to her. I hope no one had plans for a BBQ Smile .

Farmer …

Comments: 1


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Post by Guest on 2009-02-13, 17:38

Hi guys, whilst stripping my Raptor50 after its untimely auto the other day I decided to pull the engine to give it a check over as this is the second time it has stopped for no aparent reason.
The pic below tells it all Crying or Very sad


Hyper 50 piston Piston

This is the result of me not taking the advice I give to others about leaning engines out to much. I must have lost track of the needle setting and last time out I gave it a couple of clicks leaner thinking I was at 1.5 turns out. Wrong the needle ended up at just over 1 turn out which is far to lean as the picture proves. The piston crown has started to melt and dish in whilst the rim has melted and broken up.
The bore is scored and the rear bearing feels shot.
It will probably be cheaper to buy a new engine than to rebuild this one. Anyway I have always fancied a YS50 pumper!!!!

Regards

DaveS

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Post by Guest on 2009-02-13, 18:17

Just priced the spares with Real Raptprs on line.

Pison-liner-piston rin-bearings

around 107.00 plus p&p

can buy a TT53 redline for £127.00

W hat would yo do?


DaveS

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Hyper 50 piston Empty Re: Hyper 50 piston

Post by Andy Sayle on 2009-02-13, 19:26

I would convert it to Electric, but then my brain may have been damaged by playing around with amps and volts for too long Smile

I would treat myself to a whole new engine though Wink

Cheers
Andy

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Hyper 50 piston Empty Re: Hyper 50 piston

Post by Mark Barnes on 2009-02-13, 19:34

go new redline

Cheep one on BMFA now

http://www.bmfaclassifieds.co.uk/detail.php?id=78548

M
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Post by Guest on 2009-02-13, 20:16

Nice one Mark, just bought the engine off the BMFA site.

Regards

DaveS

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Post by Mark Barnes on 2009-02-13, 20:50

gd gd hope its not a dog now he he
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