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Bulldogbuilder

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February 7, 2014 at 2:18 pm in reply to: Bristol Bulldog 1A aerofoil #986709

Bulldogbuilder
Participant

Where is the Bristol 1A information? (B.A. Report 643)

Please do not keep us in suspense.

Cheers,

Ed

February 6, 2014 at 10:24 pm in reply to: Bristol Bulldog 1A aerofoil #987237

Bulldogbuilder
Participant

According to Bristol drawing # 12356-1 Top Wing Standard Rib and #12497-1 Bottom Wing Standard Rib. After interpolation to the ordinate system, these ribs are the same aerofoil.

David Luff’s book “The Bristol Bulldog” states that the lower wing was a Clark YH. He must have taken this from Andrews book. The aforementioned ribs are for the Type 105 dated 1927.

The YH and 1A are very similar when placed on top of each other. (I have drawn this) Perhaps the YH is the father of the 1A. P&P is admirably spearheading a quest to find more information on the 1A. Correspondence to Bristol Heritage group has so far produced nothing. (please-please let us know if you have said info)

The Bristol 1A ir supposedly the father of the RAF 34 & 35 aerofoils. (This will impress any girl you ever meet.)

Ed 1

February 3, 2014 at 6:15 pm in reply to: An odd propeller #990147

Bulldogbuilder
Participant

John,
Would you be so kind as to give more physical details. Length, dia. of hub, thickness of hub, dia. of bolt circle, max width of blade, dia. of mounting bolts, dia. of hole. All this will help.
Cheers
Ed

January 4, 2014 at 4:46 pm in reply to: Bristol Bulldog Aileron #932438

Bulldogbuilder
Participant

Thank you Dave for the info and Tony for the interest. The only thing missing from the pictures would be the depth of the aileron at the tube spar. Ie. it’s thickest dimension. I have three cross sections of the
aileron at that point and they show even dimension with the wing (Mk I), and two showing the aileron thinner than the wing. (Mk II/IIa). One of them slightly thinner (10%), and the other even thinner yet.
Based on the dimension I have of the wing depth at that point (fact!), and what is shown on the A.P. cross sections, I am beginning to think the drawings in the A.P. manual are ‘illustrative’ as opposed to fact.
My wing dimension and the A.P. wing dimension (re:depth) As a point of interest, the Mk III and Mk IV wings are not the same as the Mk II’s. Completely different aerofoil. Dave, I may have to talk to you about the parts manual. Thanks everyone.
Ed

November 11, 2013 at 7:02 am in reply to: Technote Vickers Potts Oil Cooler #975047

Bulldogbuilder
Participant

Nice work. I do however think that if you are going to make some of these that you should look very closely at aluminum as opposed to brass. Brass is okay for the museum class replicas, but a lot of work to fabricate. The aluminum would be easier by many degrees.

One thought about the corrosive factor. The life span of these airplanes were such that design progress and obsolescent would far surpass the corrosive question in relation to time.

Ed (still beating out way too many parts)((working on last wing panel))

August 28, 2013 at 2:49 am in reply to: Bristol Bulldog flight info #968711

Bulldogbuilder
Participant

It has been a while. Or as the “kid” said ‘keep making parts until you run out’. Who knew there are so many parts. At this time I am working on the upper wings, fabricating the aileron hinges. Three different types for each aileron. I recently had the upper and lower wing from one side rigged up to check on the flying wire dimensions, and they have been ordered. 22 wires. Ouch. The shop has run out of room, even I have to ask permission to enter. The exhaust system is hung, and after the wings are out of the way the next step will be to fabricate the forward sheet metal fairings. As soon as I can figure out how to add pictures, I will post some. By the way, does anyone have a spare Pott’s oil cooler just laying about?
Ed
“slave to the parts”

June 18, 2013 at 2:54 am in reply to: P&W Wasp (R-1340) Super Charger #957465

Bulldogbuilder
Participant

Thank you Pim and cypherus . I have studied the afore mentioned info list on the Wasps, but as in most cases the more you read the more questions arise. I would love to find the source of the lists as there are a few mistakes and or questions regarding some of the models.
As every Wasp model was built with a compressor I can only surmise from Pim’s information that at some point the compressor (which originally was used as a fuel/air diffuser-mixer) went from charging to supercharging. Again the two pieces of information on the nomenclature of the Wasp labeling leaves much to be desired.
Thanks again.

Ed

June 14, 2013 at 4:01 am in reply to: Surviving Drawings List #961706

Bulldogbuilder
Participant

P&P and Bob T.

I agree with the both of you re; the drawings and legal and museum staff. I have spent at least a third of my last 12 years doing research. I know that of which you speak. So consequently the Bulldog has taken WAY TOO much time.
P&P: if the French can not laugh at what you wrote, that would be their problem. Life is too short anyways.
Keep on “ranting”.
On a serious note……..how can we collate and have access to all our drawings?

Ed (how was I supposed to know there were so many parts?!?)

March 13, 2012 at 1:32 am in reply to: Navigation lights #1022201

Bulldogbuilder
Participant

Mk I Nav light

Sopwith Bob, That is EXACTLY what I am looking for. Thanks to the others, but as you can see (we need more of these visual aids!!!) the difference is in the standoff arm.
Bob, Thanks for the 5C numbers of the lens etc.
Now……….where do I find a couple of these.??????????

Cheers,
Ed

March 13, 2012 at 1:32 am in reply to: Navigation lights #1031416

Bulldogbuilder
Participant

Mk I Nav light

Sopwith Bob, That is EXACTLY what I am looking for. Thanks to the others, but as you can see (we need more of these visual aids!!!) the difference is in the standoff arm.
Bob, Thanks for the 5C numbers of the lens etc.
Now……….where do I find a couple of these.??????????

Cheers,
Ed

March 9, 2012 at 3:36 am in reply to: Navigation lights #1025151

Bulldogbuilder
Participant

NAV light

Stan,

I am very interested in the light. But, I am not familiar with “stickyup” lights.

I will try to find one with the 5C numbers.

Also……..ANY parts, esp. lens’s will help.

Cheers,
Ed

March 9, 2012 at 3:36 am in reply to: Navigation lights #1034706

Bulldogbuilder
Participant

NAV light

Stan,

I am very interested in the light. But, I am not familiar with “stickyup” lights.

I will try to find one with the 5C numbers.

Also……..ANY parts, esp. lens’s will help.

Cheers,
Ed

March 7, 2012 at 3:37 am in reply to: Navigation lights #1037030

Bulldogbuilder
Participant

Nav Lamp

You must be in fjord land if you are a cold kiwi.

Thanks for the help. I would be ecstatic to receive any and all information..
I have relegated myself to having to build one up from available items from the auto or Grimes inventory. So a rough dimension of dia., length, arm length, and a picture if you can manage that.
Once again, thank you.

Cheers,
Ed

February 28, 2011 at 4:18 am in reply to: Mk I instrument case size #1104078

Bulldogbuilder
Participant

Appendix “A” and Drawings

G-ASEA

I checked my “Parts Manual” and found a page very similar to yours. But…it used photographs instead of drawings, and had some of the items of your page but also had items not on your page. There is the possibility of your pictures being from the “Price list of Parts”. Not having seen one, I can only speculate.

I have gone thru all my manuals, and do not have an Appendix “A”. The info on the length of the instrument is helpful. My parts manual does not list any instruments.

Thanks for the info on the oil temp gage.

Cheers.
Ed

February 27, 2011 at 11:31 pm in reply to: Mk I instrument case size #1104130

Bulldogbuilder
Participant

Appendix “A”

Dear AirMinistry,

Every time I think I have found all the manuals available a new book shows up. That cover does not resemble anything I have, and I thought I had app. “A”.

The oil temp gage is a problem. First part is that I have to use a P&W Wasp 1340 ‘snap cap’ instead of the Jupiter. To cover the Wasp range I should be using 0 to 120^C. Secondly: The Mk IA instrument is mounted to the panel from the front, thus necessitating complete removal of the capillary line each time you wish to remove the instrument panel. Messy and not good for the copper tubing. Third: I have to make a special adapter to fit the bulb to the Wasp. Forth: If I find one, and have it rebuilt, it has to have the freon taken out and disposed of on the moon. Read-megga bucks. And that is if I can convince the rebuilder that he will not glow in the dark because he ‘looked’ at the instrument. I believe the face has to disposed of on Mars.
Because of the unfortunate problem of having to use the Wasp, I have figured that using an ele. instrument with the correct looking face and correct looking case, only the readers of the thread will know. (That means none of you guys are allowed to come near my aeroplane.)
Thank you very much for the information about the “A” manual, I shall see what I can do to procure said object. (how much to copy??)
Thanks again.
Ed
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