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A new treatment for a product engine

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A new treatment for a product engine

Post  batjac on Fri Nov 13, 2015 7:07 pm

Hmmm... I never thought about doing this with a Goldberg mount, but it's an interesting thought.  I wonder if I can think up a reason or application to need to do this myself.








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Actually, now that I think about it, I DO have a red backplate that I cut the mounting surfaces off of for the first Reed Speed challenge, so I have a backplate that's half way there for this.   Huh...   Project #3,947 added to the queue.

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Re: A new treatment for a product engine

Post  coxaddict on Fri Nov 13, 2015 8:11 pm

Maybe it would shed some weight compared to a horseshoe back plate. looks really cool! I have a couple of those mounts I wouldn't mind using with a modified back plate.
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Re: A new treatment for a product engine

Post  roddie on Fri Nov 13, 2015 10:10 pm

I wonder if this might affect the needle, from a vibration standpoint? The venturi-tube is now floating like a tuning-fork inside a separate mount.
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Re: A new treatment for a product engine

Post  RknRusty on Fri Nov 13, 2015 10:43 pm

roddie wrote:I wonder if this might affect the needle, from a vibration standpoint? The venturi-tube is now floating like a tuning-fork inside a separate mount.
Agreed, you definitely need a short needle for that. I used KB needles with the Nyrod extension on the engines in my Lil Bats, and after two runs, neither needle had useful threads left on them.

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Re: A new treatment for a product engine

Post  balogh on Sat Nov 14, 2015 2:57 am

Rusty I see the air inlet tube on the Surestart backplate is cracked at the spraybar. I noted that on most of my Surestart bacplates and think is a chronic failure of this aftermarket part. I see you may have tried to mend it with glue? If yes, any idea which glue would adhere to this plastic material, because CA (that I tend to believe is only good for glueing degreased thumb and forefingers) will not...
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Re: A new treatment for a product engine

Post  RknRusty on Sat Nov 14, 2015 4:25 am

balogh wrote:Rusty I see the air inlet tube on the Surestart backplate is cracked at the spraybar. I noted that on most of my Surestart bacplates and think is a chronic failure of this aftermarket part. I see you may have tried to mend it with glue? If yes, any idea which glue would adhere to this plastic material, because CA (that I tend to believe is only good for glueing degreased thumb and forefingers) will not...
Hi Andras, that is Mark's engine, but I see the crack too. Not much will stick to that plastic. Even my replacement spraybars in brand new clean backplates won't stay put with JB Weld. Maybe sleeve it with a metal collar and some JB and hope. Or retain the collar by flaring the edge behind it with a soldering iron.
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Re: A new treatment for a product engine

Post  balogh on Sat Nov 14, 2015 5:40 am

Ooooopss..sorry Rusty for mis-addressing, but thanks for the advice. As long as the spraybar and the screen in the intake tube remain fixed this is more or less just a cosmetics problem...the choke tube if used, covers it anyways.
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Re: A new treatment for a product engine

Post  getback on Sat Nov 14, 2015 8:40 am

That's pretty cool I have one in soak now (red horse shoe)That is broken at the mount and I think I still have some of those engine mounts . I have also seen some of the gray ones break at that same place ? if I was to fix one I would take a soldering iron and melt it in a bead like plastic welding or a pencil torch may would do the trick Small Cox Logo getback
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