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Need help on old .049 drive-plates

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Need help on old .049 drive-plates

Post  Cox International on Thu Oct 13, 2016 2:02 pm

We recently received a few new drive-plates that have a bigger hole. We know they are for some older engines but did not want to take our collector engines apart to check. Does anyone have a list of engines they were for?

Thermal Hopper?
Space Bug?
Space Bug Jr?

While we are at the subject, are these described correctly?

http://coxengines.ca/cox-venturi-space-bug-space-hopper-thermal-hopper.html?&cat=25

Lastly, what does one call the part on the Space Hopper that screws into the back and carries the needle valve assembly? Carb body? We ended up with one of those as well.


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Re: Need help on old .049 drive-plates

Post  Cox International on Thu Oct 13, 2016 2:13 pm

We recently received a few new drive-plates that have a bigger hole.

Meant to say that they have a SMALLER hole.
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Re: Need help on old .049 drive-plates

Post  KariFS on Thu Oct 13, 2016 2:25 pm

I have the part 1525 and the text on the envelope says "Space Hopper, carburetor complete". So I would think that the correct name for the part you described would be "carburetor body".

Not sure if I would call the part on the page you linked a venturi, as in this case the majority of the venturi is in the carburetor body. But it is difficult to come up with anything better for a description either.

The drive plate on my (ahem!) Space Bug seems to have a rather small hole, I am not going to take it apart either so this may not be so helpful. In any case the hole is about the size of the prop stud.
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Re: Need help on old .049 drive-plates

Post  Cribbs74 on Thu Oct 13, 2016 2:54 pm

Venturi nut...
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Re: Need help on old .049 drive-plates

Post  Cox International on Thu Oct 13, 2016 3:05 pm

KariFS wrote:I have the part 1525 and the text on the envelope says "Space Hopper, carburetor complete". So I would think that the correct name for the part you described would be "carburetor body".

Not sure if I would call the part on the page you linked a venturi, as in this case the majority of the venturi is in the carburetor body. But it is difficult to come up with anything better for a description either.

The drive plate on my (ahem!) Space Bug seems to have a rather small hole, I am not going to take it apart either so this may not be so helpful. In any case the hole is about the size of the prop stud.

Carburetor body is what I though as well, thanks.
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Re: Need help on old .049 drive-plates

Post  Cox International on Thu Oct 13, 2016 3:06 pm

Cribbs74 wrote:Venturi nut...

Yes, venturi nut, thanks. And for the engines mentioned in the listing?
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Re: Need help on old .049 drive-plates

Post  Mark Boesen on Thu Oct 13, 2016 4:00 pm

Yes, all the early (cast) cases used the smaller diameter crank, that was one of the big improvements of the Babe Bee.
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Re: Need help on old .049 drive-plates

Post  Cox International on Thu Oct 13, 2016 4:43 pm

Mark Boesen wrote:Yes, all the early (cast) cases used the smaller diameter crank, that was one of the big improvements of the Babe Bee.

Thanks Mark Smile
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Re: Need help on old .049 drive-plates

Post  Cribbs74 on Thu Oct 13, 2016 8:23 pm

Cox International wrote:
Cribbs74 wrote:Venturi nut...

Yes, venturi nut, thanks. And for the engines mentioned in the listing?

If you are asking if that venturi nut fits the three engines you list then the answer is yes.
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Re: Need help on old .049 drive-plates

Post  Cox International on Fri Oct 14, 2016 11:38 am

Thank you Hand Shake
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Re: Need help on old .049 drive-plates

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