Robbe Type XXI - Build status

[boatbuilder1]

New update photos coming next

New update photos coming next week
I have the bow section done and the middle hull 90% this will be a beast I set the mid hull on the floor and the bow ontop just these two sections are 48 inches long


charlie

[salt6]

My kit just showed up

My kit just showed up today. Got a few pictures posted.

My Build.

[jsl]

Very nice kit Salt6.

But could

Very nice kit Salt6.

But could you do me a favor and meassure the WTC/pressure-hull? Just inner diameter and length.

Thanks
JSL

[boatbuilder1]

sorry for the delay
presure

sorry for the delay
presure hull dims
with out endcaps
101 cm long
33cm circumfrence
outside dia
10.5cm
inside dia 9.6cm (96mm)

wall thickness
4mm

hope this helps

[jsl]

Thanks a bunch Charlie!

That was

Thanks a bunch Charlie!

That was just _the_ last and only information we needed before we can start our project!

If our project ever moves into a type XXI hull, we'll post it in this forum.

We're a bunch of gratefull engineering students up here in Denmark.

Best regards,
JSL

[k225]

I am well into the

I am well into the stage two of the build on my Type XXI and am finding it a fairly easy kit to build. (we'll see when it actually gets on the water!) Saw Dougie's articles on U Boat colours and was wondering if the same schemes apply to the Type XXI.
The only variation I have seen is U2511 with the white conning tower. Anyone done any additional research on the colurs and markings for these U boats?

[JWLaRue]

As best as I can

As best as I can tell, the Type XXI was painted entirely with the same light grey used on the Type VIIs. Schnee's U-2511 being a notable exceptio with the white tower.

-Jeff

[k225]

Thanks Jeff, I would like

Thanks Jeff, I would like to use Testors paints I have seen many type V11s done in an overall agressor grey scheme Testors 1950 seems pretty dark though. Have you gauys found a closer shade?
I like this shade of grey though gives an more realistic finish.
The U2540 on display in Bremerhaven does have a lightly darker lower hull but don't know if that was the wartime scheme.

Would anyone building this know if the guide rail I beam on the bottom of the equipment tray should protrude past the last bulkhead. mine does but I can't see any reason for this do so?

[tsenecal]

the same situation exists with

the same situation exists with the guide rail on the u47. I assumed it was so I could put epoxy on the front and back side of the bulkhead, giving a stronger glue joint.

[boatbuilder1]

try the tamiya paints
I

try the tamiya paints
I just started painting a krick type 7 using tamiya hull red and germn grey and german dark gray

[salt6]

What type of adhesives are

What type of adhesives are you using for the hull and WTC?

[k225]

I am using MBS Solvent

I am using MBS Solvent cement for ABS (Model Builders Supply in Canada) works really well on the ABS plastics in this kit. I am sealing the WTC with NHP (National Hobby Products) two part epoxy 12. Also H&D's own cyanoacrylate super thin.
These are products I have used for my surface ships with good results. I imagine any type of ABS solvent cement, epoxy, or cyan would work.
I am thinking of using silicone sealant as a reinforcement for the WTC any thoughts?

[tmsmalley]

Be careful about which type/brand

Be careful about which type/brand of silicone sealant you use. I have seen Lexan crazed (in my Hunley ballast tank) when Shoe Goo / Marine Goo products were used. This has also happened to a couple of other guys I know.

Whatever kind you get try it on a piece of scrap tubing and let it cure overnight first before you use it on your WTC. I use the clear Permatex brand sealer/adhesive and have never had a problem. It will also work on builders foam - without melting as the above mentioned products have been known to do.



Edited By TMSmalley on 1100620777

[boatbuilder1]

tim as usual you are

tim as usual you are right on the ball testing on scrap I never hear of anyone doing this I myself have always done it.
I am using the stabilt glue IU have heard comments that it gets gummy or emulsiies with prolonged emerssion
I have not had this happen or heard it happening on any bots I build
as far as others a good thick ca to tack parts together then sprinkle with baking soda
and then the stabilt or PC 11 marine grade two part epoxy
I evan have used JB weld (not the quickset one) remember this
the longer the cure time the stronger the bound
ca

[k225]

Yes thanks for the heads

Yes thanks for the heads up on the silicone sealant I'll make sure to test ahead of time.