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  #1  
Old 04-04-2022, 10:19 PM
Skaffman Skaffman is offline
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Lightbulb Honest Ivan

I'm looking for a photo or photos of Harry Stine's Honest Ivan seven motor cluster model.I've only ever seen one photo of it and that was in the Handbook.I've been thinking about doing one either for 18 mm or 24mm motors.Would anyone have any information on it?
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Old 04-04-2022, 10:27 PM
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I think there was an article on it (or part of an article) in the old Model Rocketry magazine in the early 70s. Model Rocketry magazine...not the NAR mag Model Rocketeer.

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  #3  
Old 04-05-2022, 08:07 AM
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mojo1986 mojo1986 is offline
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Here's a possible alternative if it doesn't positively have to be an Honest Ivan.............


https://www.ebay.com/itm/1252400555...AAOSwInBiNpL B
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Old 04-05-2022, 11:26 AM
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Old 04-05-2022, 01:15 PM
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Quote:
Originally Posted by astronwolf


Yep, that is it Wolf. Thanks for tracking it down.

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  #6  
Old 04-05-2022, 01:43 PM
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Check out STL file 22 from this Nose Cone Fun pack posted on thingiverse for 3D printers

https://www.thingiverse.com/thing:2876174/files
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Old 04-08-2022, 09:51 AM
Skaffman Skaffman is offline
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Quote:
Originally Posted by mojo1986
Here's a possible alternative if it doesn't positively have to be an Honest Ivan.............


https://www.ebay.com/itm/1252400555...AAOSwInBiNpL B
That Hydra is a good looking kit but I am rather partial to Harry's original design, I'm just looking for a photo or photos of it just to see how it could be done.
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Old 04-08-2022, 11:06 AM
A Fish Named Wallyum A Fish Named Wallyum is offline
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Seems like there was a pic of Harry with Ivan in one of the Handbook of Model Rocketry editions.
Google turned up this. Definitely the pic I was thinking of.
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  #9  
Old 04-08-2022, 03:55 PM
Skaffman Skaffman is offline
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Quote:
Originally Posted by A Fish Named Wallyum
Seems like there was a pic of Harry with Ivan in one of the Handbook of Model Rocketry editions.
Google turned up this. Definitely the pic I was thinking of.
Yes, that's the photo I was thinking of.Woukd like to build my own replica of it but the nose would have to be custom made.What size tube would accept 7 18mm motors?
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Old 04-08-2022, 04:23 PM
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Quote:
Originally Posted by Skaffman
Yes, that's the photo I was thinking of.Woukd like to build my own replica of it but the nose would have to be custom made.What size tube would accept 7 18mm motors?

BT-70. Seven BT-20's fit almost perfectly. As though it was made for it (like BT-60 holds three BT-20's).
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