joey_snaproll

My Feedback: (32)

Thanks for the pictures.If you ever have the rear spinner off,Could you take a picture from strait on from the back?,It looks like a bisson in cowl pitts up right (with the out let pipes moved to the other end) or a Bisson inverted pitts muffler might fit. If you take the time to do the pictures take a few mesurement too, from the center crank shaft out to the edge of the cowl.Say 90 degrees,45 degrees and 180 degrees.

I have a Bisson upright pitts for a super tiger 90 ,and i could try and see if it would work from your pictures and mesurements .

I have a Air hobbies round incowl motor mount /muffler that I'm going to use in the front with a webra 120,And I plan on using a ST90 for the back.

Thanks
Joe

alfsrc

Hey Guys

Just dropped in to check out the fantastic building of DO-335s going on.

Hey BOSMODELAIR, very sorry to see those distressing pictures of the Do-335 V2 is always better than V1 anyway . I loved the videos though, the sound the pusher prop makes is just awesome. I am looking forward to getting mine finished.

Cheers

Alf

RemoteJets

Hye Alf,

Only for the unusual sound of the Do-335 I would build a second one.
And as you said V2 will be a lot better than V1, althought that`s my goal, I now know what I would change to make it a better one than V1.

And when this one is ready I will post the maiden video here and I hope that V2 will live a little longer ;-)

Greetz,
Berto.

alfsrc

Berto, I look forward to it!

Hey Kiwikid, where did you run across those GWS DO-335 pics? I had a hunt around but couldn't find any reference anywhere. Its a VERY interesting project. It looks like all foam. Is that right? [sm=72_72.gif]
Cheers

Alf

PS: As a side-note, I was just looking through another thread and ran across two DO-335 pics. Just in case you haven't seen it;
http://www.rcuniverse.com/forum/m_6376875/tm.htm

ghethco

Hi guys,

Just wanted to make a few comments about Al Masters' plans and the short kit I made from them. Al started with the 70" version back in the 1970s, way before CAD was available. There are quite a few fit problems as pointed out earlier in this thread. For the 81" short kit, I scanned the parts templates into CAD and corrected some of the larger errors. Bringing the whole thing to modern CAD standard was just too daunting, I might as well have started over from scratch. The remaining fit problems are minor, just a matter of a little extra shimming or sanding. I don't think any of them are larger than 1/16". The original parts were off by as much as 3/16" in some cases! But like I said, these were drawn the old fashioned way with pencil and drafting tools. I think Al was a lot more interested in building the model and flying it than making the plans perfect :-)

What Al had and a lot of us share is a deep fascination with this plane! When I heard he was going to quit selling plans, I approached him and he suggested I take over for him. Imperfect as it is, I couldn't see letting this classic design become only a memory... He sent me all his original drawings and cowling molds. I've since gone on to make my own designs from scratch in CAD (Bv 141, Ho 229) but Al's Do 335 is how I got started in the kit business.

Some specifics -- Mel mentioned retracts and 'sit'. The length of the struts will determine how scale the model looks on the ground. The important thing for flying, though, is that the model have a slight nose-up (positive) attitude for take-off. Mine ended up slightly negative and it is a bear to get off the ground!

I'm about to start work on a 1/2 size version of the 81" model (40" span), for electric power. I've been playing with electrics for the Ho 229 and I'm really impressed with the power to weight factor of the new equipment. I'm mainly doing this for fun, I'm calling it the "screaming arrow" :-) I might produce a kit if there is interest.

Gary

alfsrc

Hello Gary

Thanks for that explanation. It makes a lot of sense once you know. [sm=red_smile.gif]

Do you mind if I quote your last message on my forum (www.alfsrc.com- where I am building the 56" version) to explain some of the inaccuracies?

Regards

Alf

ghethco

Hi Alf,

Hey, nice site you have and what a great Do 335 thread! That's the most Do 335 build info I've seen on the net in a long time. The pics are of the 56" version, correct?

This plane kinda gets in your blood, eh? If you're ever in the D.C. area, you should pay a visit to #102 at the Dulles branch of the NASM (Udvar-Hazy Center) I uploaded pics here:

http://aeroweb.brooklyn.cuny.edu/spe...er/dor-335.htm

Of course, no problem quoting what I wrote in your thread.

Gary Hethcoat
Wings on the Web
[email protected]
http://www.wingsontheweb.com

alfsrc

Hello Gary

Thanks for the kind words! [sm=shades_smile.gif][sm=thumbs_up.gif]

I sort of felt a bit bad as I had made a few comments about the plan in my forum. It does get frustrating when you cut something out and it just doesn't fit BUT put into perspective, it makes sense of course. I have posted some of the corrections that I have come up with on my forum (for the 56" version of course).

And of course you are right - this plane does get into your blood .

Yes, it is the 56" version.

Cheers

Alf

timothy thompson

My Feedback: (1)

mel for a young kid you are doing great. first big build? awesome job. next time go electric. Do reasearch and you will be amazed at what is out there

oldvet70

My Feedback: (10)

Gary,

Since the landing gear is so critical to the flight of this plane what are your suggestions for gear/strut length/wheels on the 81" version. I have your 81" kit and am putting together everything needed before starting it some time in the next year or so. Thanks.

timothy thompson

My Feedback: (1)

if you lower the nose strut too far you will run into a plane that will not lift off at any speed unlees you give lots of elev. I have a lancair that will run full power and without elevator will not fly. Once I PULL ELEV SHES FINE AND LANDS GREAT.

ghethco

Hi Guys,

To answer the question on LG strut length, first let me say that there are a lot of variables here like tire size, oleos (or not), etc.

So, having said that, here are some dimensions for the 81" model:

All lengths measured from a/c skin to LG axle. Actual strut length will vary depending on retract units and their mounting.

Nosegear: 9-3/32" at scale 120 degree retraction angle and scale 3-3/4" tire
8-3/16" at ~90 degree retraction angle and scale 3-34" tire
Nosegear oleo does not compress significantly when a/c is at rest

Mains - 8-1/2" (7-1/2" w/fully compressed oleos) with scale 6-1/4" tire

BTW, I may not check this thread very often. If anyone has questions and wants a prompt reply, better to contact me by email or through my website.

Gary

Gary Hethcoat
Aviation Research
[email protected]
http://www.wingsontheweb.com

RemoteJets

Our Pfeil V2 is almost ready for flying again:
http://www.***************/ons/do335/Do335.htm

Stuka Jon N

My Feedback: (33)

Mine is a Don Smith, Flys like a dream Stuka Jon

at-6 texan

Hi Jon how munch is long the yours Do-335 4.98 fett wing span?...

RemoteJets

the Don Smith has a wingspan of 98,8 Inch or 8,2 ft(250cm)

Mine is a little smaller 75 inch or 6.2ft (1900mm)

at-6 texan

wow Bosmodelair.. no bad!!!!

ticketec

My Feedback: (2)

hey Gary,

Have you made any more progress on your plug? it seems to bhe the perfect sized Do-335!

thanks

dave

RemoteJets

Our Do-335 Pfeil v2 has flown again.
http://www.***************/video/2009/pfeilmaiden.wmv

Need to do some small changes for coming flights but he can do it.

RemoteJets

Heremy Do-335 in dogfight with a P38 and Spitfire:
http://www.youtube.com/watch?v=tChKP...layer_embedded

RemoteJets

And here a video of dogfight nr 1:

http://www.***************/video/2009/dogfight1.wmv

Enjoy.

Greetz,
Berto.

the BosModelAir team
www.***************

Sponsored by Jeti

alfsrc

Thats a great video!!!!

Beautiful scale flying!!!!

Cheers

Alf

S_Dave

Hello, Bosmodelair,

That was a wonderful video. Thanks for sharing it!

barry wetherell

Hi guys, very interesting read, this thread, I have had an Al Masters plan reduced from 81 to 73, and going electric, My thoughts in reguards to the lower fin hitting the ground and the angle of attack on takeoff, would there be any reasons why that fin could not be reduced and added to the top fin??? apart from it would look incorrect, I am considering 1" would be enough
Thanks
Barry

Ram-bro

My Feedback: (101)

I dont see an issue with doing that but why do that at all/ on mine I have not had any issues with the tail drgging or hitting, not sayng tta it wont happen. if you get the correct length landing gear, you shouldnt have a problem. I saw one for sale here on RCU where the gear was obviously to short and I am sure would never rotate