stunthanger.com
General control line discussion => Open Forum => Topic started by: Craig Campbell on May 30, 2013, 05:35:14 AM
-
I have 2 MVVS Glo 2.5cc motors and thought I had purchased 2 diesel heads but they are missing the intermediate piston. Has anyone got a picture or drawing that I could machine some up from.
-
I have 2 MVVS Glo 2.5cc motors and thought I had purchased 2 diesel heads but they are missing the intermediate piston. Has anyone got a picture or drawing that I could machine some up from.
The MVVS Glow and diesel have different liners IIRC. Fortunately the diesel push/pull head from a Parra 15D is almost a straight fit.
They're only about Euro 15 from Alberto Parra.
I have a pic of a modified motor somewhere I'll see if I can find it.
Otherwise here's some ideas for home made diesel heads.
(https://lh3.googleusercontent.com/-Ao7Ooi8ZHx0/UQmjCl4f0AI/AAAAAAAABh8/ylXJZs6VpqE/s800/g15_diesel_head_reduced_163_001.jpg)
Ray
-
Fortunately the diesel push/pull head from a Parra 15D is almost a straight fit.
Thanks for that tip. More reasons to send Senor Parra some money.
What is the required adjustment?
-
Thanks for that tip. More reasons to send Senor Parra some money.
What is the required adjustment?
There are a few MVVS 2.5 Parra Diesels around. The normal ABC p/l is usually replaced by a generic Rossi mk2 set with diesel fits.
Either Iron/Steel or ABC work well. The Parra head has to be individually fitted and a rod that suits the p/l may be necessary. The one in the pics has a standard MVVS rod IIRC.
The top of the liner may need a slight skim so the push/pull head goes deep enough.
The bottom of the MVVS cylinder fin assembly may need a skim as well to get a suitable exhaust duration.
A Fora 15 Diesel "Pioneer" is more powerful and cheaper!
Ray
-
Thanks Ray. I might just leave mine as a glow, then. I only got it as a nostalgia piece anyway. A Fora or Parra is always going to be a better option in the air as you say.
-
Thanks all for the help I will see if I can get some parra parts.