Bronco Type XXIII in 1/35th scale

[He Who Shall Not Be Named]

I was going to do the same thing with my kits once I receive them, as in put a disk back there to check the overall size.

I assume that disk is 51mm? I wouldn't go larger in diameter than that. If that is the 51mm, try a 47mm disk for comparison.

It is now annoying me that I have not been able to find that diameter measure of the real prop. I recall it being posted on the Subcommittee forum, probably in Jeff's U-Boat Pen section.. I might go ahead and become a paid, official Subcommittee member to access the U-Boat Pen section of the site. I believe Sam (who has been posting on here) is already a member. Sam should be able to look it up immediately (if it is still on there). Only issue with going by the real diameter, is who knows how accurate the distance between the rudder supports is on the model.. If that is off, then the diameter of the real prop goes out the window.

The final call, of course, is going to be yours, by eyeballing the clearance and the look, based on the photos. If that is 51mm, in your photos, that is pretty close, it is definitely not too small, but possibly a bit too large. I'd say test the fit with a 47mm disk to compare, and maybe even settle on 49mm, if that looks too small..

The length you have for the hub looks perfect!

Out of curiosity, what is the diameter of the Bronco stock prop?

Listen to yourself! I'm calling the anal-retentive police on you! 50mm it is. Done!

[He Who Shall Not Be Named]

I just ordered one of these from Mike. Aside from a working prop, what else are you going to include in your detail set, David?
-Sam
EDIT: - just looked back through the pages of this thread I missed. Great stuff on the prop difference, the snort head and boat's being dissimilar. Time to dig out my copy of "Vom Original" and my other Type XXIII reference material...This has always been one of my favorite classes of U-Boats.

Let's see:

two foundations to mount the sail to the hull with machine screws; new control surfaces with installed operating shafts; rack-and-pinion linkage to operate rudder; several SD foundations (which will also stiffen up the lower hull; torpedo nest bulkhead; torpedo tube foundation; propeller, bell cranks ...

[Warpatroller]

How does this look? between blade tip and inside of rudder posts is 5mm

[ATTACH=CONFIG]19092[/ATTACH][ATTACH=CONFIG]19093[/ATTACH][ATTACH=CONFIG]19094[/ATTACH][ATTACH=CONFIG]19095[/ATTACH][ATTACH=CONFIG]19096[/ATTACH]

I was going to do the same thing with my kits once I receive them, as in put a disk back there to check the overall size.

I assume that disk is 51mm? I wouldn't go larger in diameter than that. If that is the 51mm, try a 47mm disk for comparison.

It is now annoying me that I have not been able to find that diameter measure of the real prop. I recall it being posted on the Subcommittee forum, probably in Jeff's U-Boat Pen section.. I might go ahead and become a paid, official Subcommittee member to access the U-Boat Pen section of the site. I believe Sam (who has been posting on here) is already a member. Sam should be able to look it up immediately (if it is still on there). Only issue with going by the real diameter, is who knows how accurate the distance between the rudder supports is on the model.. If that is off, then the diameter of the real prop goes out the window.

The final call, of course, is going to be yours, by eyeballing the clearance and the look, based on the photos. If that is 51mm, in your photos, that is pretty close, it is definitely not too small, but possibly a bit too large. I'd say test the fit with a 47mm disk to compare, and maybe even settle on 49mm, if that looks too small..

The length you have for the hub looks perfect!

Out of curiosity, what is the diameter of the Bronco stock prop?

[goshawk823]

I just ordered one of these from Mike. Aside from a working prop, what else are you going to include in your detail set, David?
-Sam
EDIT: - just looked back through the pages of this thread I missed. Great stuff on the prop difference, the snort head and boat's being dissimilar. Time to dig out my copy of "Vom Original" and my other Type XXIII reference material...This has always been one of my favorite classes of U-Boats.

[MFR1964]

David,

By just looking over your shoulders i learn a lot, go get her done!!!, and you won't be surpriced if i said that also something is growing in my Skunkworks, not yet ready to be posted, stil designing, building and tinkering.


Manfred.

[He Who Shall Not Be Named]

With Manfred and Warpatroller looking over my shoulder and sticking a cattle-prod up my butt every now and then, how can this project (1/35 Type-23 fittings kit) go wrong!?....

[MFR1964]

Wow, you're getting at it David, keep running around your cave, i will be watching over your shoulder.


Manfred.

[He Who Shall Not Be Named]

Nice! There is the master for the prop hub! I see it looks like you are going with the 51mm prop diameter. How much clearance does that allow between the tip of the blades and the upper and lower tail? I won't have my kits until Tuesday, so I don't know the measurement between the upper and lower tail on the model. I assume the 51mm looked better when compared to the photos than the 47mm? I thought the 51mm might be a bit too large, but perhaps not..

Could you explain what those isosceles triangle shapes are for?

How does this look? between blade tip and inside of rudder posts is 5mm

[He Who Shall Not Be Named]

So access to the SD will be via Z-cut through the hull.
Can't wait to see your fittings for working the rudder post.

That was a tentative study. I'm now thinking of a waterline split.

[He Who Shall Not Be Named]

Nice! There is the master for the prop hub! I see it looks like you are going with the 51mm prop diameter. How much clearance does that allow between the tip of the blades and the upper and lower tail? I won't have my kits until Tuesday, so I don't know the measurement between the upper and lower tail on the model. I assume the 51mm looked better when compared to the photos than the 47mm? I thought the 51mm might be a bit too large, but perhaps not..

Could you explain what those isosceles triangle shapes are for?

I'll refine the diameter later -- note the concentric circles on the profile drawing of the projected blades, the outer one represents your 51mm, the inner one the 47mm version. I'll build a disc place-holder, fit it to the hull then eye-ball the fit back there for both 51 and 47mm.

This morning I'll carve out the blade master, do a trial fit to the hub and again check clearance to the rudder posts.

Each of those triangles describes the angle of the blade at a specific radius point -- a means of graphically determining the radius angles along the span of a constant-pitch type propeller. The chart also identifies the projected width of the blade at each selected radius point --information needed to plot developed shape of the blade.

[redboat219]

So access to the SD will be via Z-cut through the hull.
Can't wait to see your fittings for working the rudder post.

[Warpatroller]

Nice! There is the master for the prop hub! I see it looks like you are going with the 51mm prop diameter. How much clearance does that allow between the tip of the blades and the upper and lower tail? I won't have my kits until Tuesday, so I don't know the measurement between the upper and lower tail on the model. I assume the 51mm looked better when compared to the photos than the 47mm? I thought the 51mm might be a bit too large, but perhaps not..

Could you explain what those isosceles triangle shapes are for?

[He Who Shall Not Be Named]

Today's work on the Bronco 1/35 Type-23 fittings kit masters:

[He Who Shall Not Be Named]

Damned right!

[Warpatroller]

It will. And thank you for your effort digging out the information for us.

In an earlier post I said, "I came up with 56mm for the prop at 1:32 scale. Which would be 51mm at 1:35." I still have been unable to locate the diameter of the full-size boat's propeller. I had it a few years ago but seemed to have misplaced or lost the info. I have a measurement of 23mm for the 1:72 scale Special Navy XXIII prop. I think Special Navy did a better job on the prop than Bronco. Based on the SN prop, it would be 47.3mm at 1:35. So somewhere in the range of 47mm to 51mm. With that info, plus the photos I posted, you should be able to come up with a nice prop that blows the Bronco piece out of the water. I am confident you will even trump the OTW XXIII prop as well!

One of my favorite boats, with a prop and fittings being made for it by one of the best in the business.. This is exciting!!