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Thimble Drome Props
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Thimble Drome Props
I have a couple of White Thimble Drome Props that have a "Warning" on the prop hub that says "Do Not Use on RR-1, Space Bug, Thermal Hopper". One of them came on a OK cub 049B. I don't really plan on running them , but am curious as to what engines they would be suited for? ? one is 5D x 3P, the other is 4.5P x 4P Any of you guys have any Information on them? Thanks!
Marleysky- Top Poster
-
Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
Re: Thimble Drome Props
The RR-1, Space Bug and Thermal Hopper can reach higher RPMs than later reedies can (Babe Bee, Golden Bee, SBjr). Those props may not be able to safely handle those speeds. That note can still be seen on some new props currently available from Matt and Bernie (obviously still using the same old molds).
Re: Thimble Drome Props
Mark, I want to make a replica propeller stand, seen on left upper corner of the first picture. Can you send to me a scan or a high resolution photo of that propeller sheet?
Levent Suberk- Diamond Member
- Posts : 2210
Join date : 2017-12-24
Location : Türkiye
OVERLORD- Diamond Member
- Posts : 1793
Join date : 2013-03-19
Age : 57
Location : Normandy, France
Re: Thimble Drome Props
Admin wrote:The RR-1, Space Bug and Thermal Hopper can reach higher RPMs than later reedies can (Babe Bee, Golden Bee, SBjr). Those props may not be able to safely handle those speeds. That note can still be seen on some new props currently available from Matt and Bernie (obviously still using the same old molds).
Those props have rather low load, maybe there is also a risk of over-revving those more powerful engines?
KariFS- Diamond Member
- Posts : 2009
Join date : 2014-10-10
Age : 52
Re: Thimble Drome Props
Levent Suberk wrote:Mark, I want to make a replica propeller stand, seen on left upper corner of the first picture. Can you send to me a scan or a high resolution photo of that propeller sheet?
sure send me your email
Re: Thimble Drome Props
KariFS wrote:Admin wrote:The RR-1, Space Bug and Thermal Hopper can reach higher RPMs than later reedies can (Babe Bee, Golden Bee, SBjr). Those props may not be able to safely handle those speeds. That note can still be seen on some new props currently available from Matt and Bernie (obviously still using the same old molds).
Those props have rather low load, maybe there is also a risk of over-revving those more powerful engines?
yep, thats my guess, i think they needed the smaller diameter for the Cub landing gear.
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