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Testors project engine?? Babe_b10
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Post  Oldenginerod on Fri Mar 27, 2020 6:13 am

https://www.ebay.com/itm/Vintage-Testors-PIPE-BOMB-049-Model-Airplane-Engine/333554271192?hash=item4da96243d8:g:6Q8AAOSwr9RedqBA

This is an engine from the Testors Galax IV Hovercraft.  As you will see, it uses a remote tank and is easily mounted.  Mounting pattern is the same as a Cox .049 tanked engine or Cub .049A.

Perfect engine for a little experimenting/comparison. Thumbs Up

Rod.
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Post  roddie on Fri Mar 27, 2020 1:15 pm

Thanks Rod. I suppose then; that a search for "Testors Galax/Galax IV engine-mount" could yield the part to get many an orphaned engine back running and mounted in a model. Testors must have offered the mount as a spare/replacement-part.

Testors project engine?? Galax_12
Testors project engine?? Box_si10
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Post  davidll1984 on Fri Mar 27, 2020 9:28 pm

wat de reed valve look in testors engines ? is it fit cox part
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Post  Marleysky on Fri Mar 27, 2020 10:32 pm

davidll1984 wrote:wat de reed valve look in testors engines ? is it fit cox part

I haven’t measured or compared the Testors reed to the Cox mylar reed, but they do look very similar!
Testors project engine?? A359ce10
Testors project engine?? 8c8b8310
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Post  Oldenginerod on Sat Mar 28, 2020 1:45 am

Not sure how many spare parts were available, but I've never seen the mount offered anywhere, or for any other application, just the Galax.
I have two but have to admit that I've never run one. The venturi assy. snaps into the back of the mount and one of mine is missing. I just carved the venturi out of a postage stamp backplate and intend to glue it in. The reed holder's part of the mount so I don't see why it shouldn't run ok with the Cox venturi.
Earlier Testors reedies had a star shaped reed like Cox, only made from Mylar. The rectangular ones that Rene shows are Mylar as well I believe.
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Post  davidll1984 on Sat Mar 28, 2020 8:28 pm

y first tink it was metal is intake ventury hole is same as cox standar timbledrome pee wee engines is it biger ? using black widow tank ventury seize mebee give litle more power ?
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Post  Oldenginerod on Sat Mar 28, 2020 8:45 pm

davidll1984 wrote:y first tink it was metal is intake ventury hole is same as cox standar timbledrome pee wee engines is it biger ? using black widow tank ventury seize mebee give litle more power ?
 
Modifying the Testors engines is probably a little dangerous. In standard form they are reasonably reliable, but push them hard and they break the rod or crank-pin. I haven't measured venturi size, but I imagine, being the same .049 capacity as a Cox engine, that the size would be equivalent. Power is pretty equivalent to a Babe/Golden Bee, if not a little more. Not quite up to a Black Widow.

Rod.
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