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-   -   DLE55 Rear Exhaust Conversion (https://www.rcuniverse.com/forum/gas-engines-142/10889058-dle55-rear-exhaust-conversion.html)

dynasel 01-03-2012 03:01 AM

DLE55 Rear Exhaust Conversion
 
I would like to know if its possible to rotate the cylinder head to make it a Rear Exhaust Engine. I am sure the Pin on the Piston where the Ring seats has to be relocated as well... Rear Exhaust type engine will still use the original muffler as Pitts and will save the cost of buying a cheap Pitts supplied by 3rd party in China which normally fails after few flights, additionally no need to cut the cowls from different angles and sides.

Diablo-RCU 01-03-2012 04:14 AM

RE: DLE55 Rear Exhaust Conversion
 
Not possible. The piston also needs to rotate 90 degrees, and that can't can be done.

mpascual 01-03-2012 04:25 AM

RE: DLE55 Rear Exhaust Conversion
 


ORIGINAL: dynasel

I would like to know if its possible to rotate the cylinder head to make it a Rear Exhaust Engine. I am sure the Pin on the Piston where the Ring seats has to be relocated as well... Rear Exhaust type engine will still use the original muffler as Pitts and will save the cost of buying a cheap Pitts supplied by 3rd party in China which normally fails after few flights, additionally no need to cut the cowls from different angles and sides.

If you rotate the cylinder head, when the piston is at TDC , there is no skirt surface closing the exhaust port, and crankcase will lost pressure and air-gas mixture.

You will need a different piston (if available) wit different skirt surface on wrist-pin exhaust side, and relocated ring pin.
On the NGH35 engine (user configurable for side or rear exhaust) the factory supply a new piston for rear exhaust version.

Best regards

w8ye 01-03-2012 07:25 AM

RE: DLE55 Rear Exhaust Conversion
 
Also the way the intake ports in the cylinder align with the reliefs in the crankcase will not work


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