Wright j-5 "1/4 scale" almost done!

[Smartmove]

Hi!
Here is video of my Wright J-5 "1/4 scale" from the drawing by K.E.Olsryd. It's 90% finished. Need to make the tube for the pushrod. Also want to make a new distributor like the one on the drawing with cables that have steel mesh as noise isolator outside. It's very easy to start and run well at low and high RPM. Had problems with the ignition sensor. Was quickly destroyed. Moved the minus pole to the ignition to the distributor housing, hasn't broken anything after that.
Also a video showing what happend if you have bad isolation between the sparkplug cap and sparkplug, and how i fix the problem on my very cheape DIY caps.
Regards Gunnar!

 

[kuhncw]

Very nice work. Sounds good.

Chuck

 

[ninefinger]

Excellent work, maybe even inspire me to get off my but and do something with the J-5 castings I have aging in my workshop!

 

[GreenTwin]

Nice work !
Very impressive and large engine.
.

 

[Smartmove]

Hi!
Thank to all of you for nice words. It was realy nice to get it to run since this was my first multicylinder and second sparkignition engine.
To ninfinger. I have done som reconstructions compared to the original drawing. I changed the oiltank, make tha camring in one pice and the camwheel a littelbit different. I also made some changes on the shaft for the impellar. If you are interested i can send you drawing of the changes i have made.

 

[petertha]

Fantastic! I would be interested to learn more details of your ignition system (module/coil, distributer, leads, plugs...) & the modifications you did in the 2nd video that suppressed the wayward sparks.