Topic: bristol M1

i posted in general about ideas for a z38 and am still leening towards one of my origonal thoughts a Bristol M1

has anyone built from this plan and is it ok

RM400 - Bristol M1B Monoplane - Only £24.95 - My Hobby Store

Martin Wilkinson is a personal friend of mine who I have known for the best part of forty years. It is an old drawing but very accurate and a very good flyer.When he desighned it and built and flew the original it was light years ahead of its time long long before A/C at this scale were common practice. You cant go wrong working to his drawings, they are very good and I dont hesitate to recommend them to you. I am still in contact with him and though he has been out of the hobby for a number of years there are people who knew him would love to see him come back, as he may well do so one day.Go for it mon ami . regards Ken  ;copper;

couple of questions ? do you know if its a one or two piece wing and also how is the spinner constructed?

Hi,

I actually own the original prototype...I last flew it on Monday at Ashbourne. Its lovely.

Its currently powered by a st3000 but I am thinking of going petrol with the cost of fuel at the moment.

It flies really nice but needs co-ordinated rudder/aileron. It has a tendency to need rudder and opposite ailerons....

I had a new spinner made recently by Pat Cuss - the backplate for it was made by Chris Poyser - he machined one from a Nylon Chopping board..

I have the plans too.

Here is a piccy of it in action at the Greenacres show last year - before I'd finished detailling and adding pilot....



Jez

looks good  :afwill get the plan ordered i think. Jez was the Bristol at the Barkstone Xmas fly in yours can remember seeing one there

looks good  :afwill get the plan ordered i think. Jez was the Bristol at the Barkstone Xmas fly in yours can remember seeing one there

Thats the one 

Just come off the phone with the desighner and builder. He tells me the A/C you now own first flew around 30 years ago, He also thinks the ST3000 is the original engine, If this be so then he wishes you the very best of luck remouving it as when installed it was put in for ever so you may have to drill the bolts out.It has obviously been re covered at some time for when I knew it it had a full complement of markings. Ken  ;copper;

Lo Ken..

I never had an engine with it - I bought it off Sir Redshaw last year as an uncovered project. Ian was going to do it as the Red M1c racer thats now in Oz i believe.

I got a St 3000 very cheap but you are right - the firewall had been butchered a bit at some point, but the holes were all there for the ST still.

Jez

Small world innit?  ;copper;Ken

I built the original prototype and am delighted to see it flying again! If anyone needs questions answering on the Bristol M1, please ask.

Martin Wilkinson.

Maritn,
      Thanks for the info on the spinner......superb looking model, and glad to see it flying after so long!!

  Cliff

If anyone needs questions answering on the Bristol M1, please ask.

Hi Martin,

Just love this big fuselage!
The 1/3 scale is just screaming for a geared ZG38   
What is the total weight?
Have you made molds for the spinner and cowl?   

Is the plane capable of doing loops and rolls (not with the original I read somewhere  ), and how does she cope with (cross)winds?
Looks like a narrow undercarriage 

Is it possible to place some pictures or a link where I can find some regarding your M1?

Thanks, Ralf

Hi Martin,

Just love this big fuselage!
The 1/3 scale is just screaming for a geared ZG38    
What is the total weight?
Have you made molds for the spinner and cowl?  

Is the plane capable of doing loops and rolls (not with the original I read somewhere  ), and how does she cope with (cross)winds?
Looks like a narrow undercarriage  

Is it possible to place some pictures or a link where I can find some regarding your M1?

Thanks, Ralf

My M1b isn't 1/3 scale, it's 2/7 (3.5 to 1).
Weight when I had it was 25lbs with no ballast needed to balance it.
My cowling was cut from a 10 inch aluminium camping kettle. As the cowl was horseshoe shaped, not a full ring, this was easily stretched to the required 12 inches cowl diameter.
I have a mould for the spinner. It's a pain making lightweight balanced flying spinners, so don't ask.
The M1b is fully aerobatic, loops, rolls, immelmanns, cuban-8s, whatever. I never spun it though, never felt the need to push my luck...
The undercarriage is a bit tall and narrow, not so good for crosswinds. Better information discovered since the model was built suggests that the legs may be a little bit too long actually.

Pictures attached:

Hello Martin, thank you very much for your info! 

Last week I bought 2 sets of plans from another model pilot
Your Bristol M1 (and a 3m Pietenpol Aircamper  )


Regarding the M1
When I measure the prop and wheelsize from the windsock datafile:

for the 1/3,5 scale the prop is 29.1" and 19,9cm wheels
for the 1/3   scale the prop is 34" and 23,2cm wheels

I would love to put the geared ZG38 in one of these, if the 32x18" prop has enough ground clearance on the 1:3,5 scale this would be a perfect fit
(and I wouldn't have to scale up the plans)   

I hope to get the plans tuesday so I can study them thoroughfully

Sorry, won't ask for the spinner   

Thanks, Ralf

With a geared 38 you definitely won't be short of power.

Ralf, I owned and flew Martins original for a couple of years and would say that you may have trouble getting the model to stop without cutting the motor (not ideal on taxi and take off  ), since even at tickover there would be enough thrust to fly it. The Super Tigre in the original had plenty of power for the most unscale of flying. Do you fancy scaling the plan up to a true 1/3, in which case the geared 38 would be perfect

Ian.

could do you an ally spinner, cowl poss given some sizes, if you do enlarge too 1/3 i have a cowl that would fit, allready to cut 

   chris

Hi..

Pat Cuss - "Gotha" has all the cowls and spinner moulds for 1/3 scale.

Jez

Ian, Chris and Jez, thanks for the info! 
Firstly I'll study the plans, and then make a decision what scale it'll be
(or which plane it'll be, don't like the ground handling as Martin described it  )

Hope to have them plans tomorrow 

Thanks all so far 

Ralf

Martin/Ian,
          I was looking at getting this plan around a year ago with great interest, then the idea kind of fizzled out like it does so often when another project catches your eye But I'm interested again .............Do you think this might make a good home for my Laser 300v either at the original 1:3.5 or at full 1/3rd scale. I'm determined to make a WWI model for this damn engine
Thanks,
Walts.

Martin/Ian,
          I was looking at getting this plan around a year ago with great interest, then the idea kind of fizzled out like it does so often when another project catches your eye But I'm interested again .............Do you think this might make a good home for my Laser 300v either at the original 1:3.5 or at full 1/3rd scale. I'm determined to make a WWI model for this damn engine
Thanks,
Walts.

That'd be a superb choice of motor for the model. Plenty of power in reserve too

I always regretted letting the original go to Squarehead, but its up and running again now and is a real pleasure to see it flying.

Ian.

I always regretted letting the original go to Squarehead, but its up and running again now and is a real pleasure to see it flying.

Ian.

He liked it that much he tried to get away with not giving me the seat.........

Jez

He liked it that much he tried to get away with not giving me the seat.........

Jez

Martin did do a particularly fine job of the seat.....

Ian.

I Bet his one of those that takes the light bulbs out the house when he sells it too ...........So Mr. Redshaw,... are you saying the original size model would be ideal, or could I stretch it to the full 1/3rd scale???

Ian, Chris and Jez, thanks for the info! 
Firstly I'll study the plans, and then make a decision what scale it'll be
(or which plane it'll be, don't like the ground handling as Martin described it  )

Hope to have them plans tomorrow 

Thanks all so far 

Ralf

I didn't mean to frighten you off about ground handling. I built the original in the 1980s and it is still flying so can't be that difficult to drive around. Remenber that these are primitive machines, no ground steering, no brakes. During the First World War all aircraft movements on the ground took place with a man on each wingtip to provide the required manoevrability. You just need to recognise this and not expect to have the same level of stability on the ground as you would taxying a Tucano. This applies to virtually all aeroplanes of the era.

I Bet his one of those that takes the light bulbs out the house when he sells it too ...........So Mr. Redshaw,... are you saying the original size model would be ideal, or could I stretch it to the full 1/3rd scale???

The original size would be best for the Laser you have mate

Ian.

OK Ian, Thanks mate   I've got some money burning a hole in my pocket at the moment and I want to commit to a new project.......Was almost thinking of selling the laser on, but this looks like a good place to stick it.........Hope I don't get distracted again at Woodsprings Saturday
thanks,
Walts.

Martin did do a particularly fine job of the seat.....

Ian.

Martin, any chance of a short 'how to' on the wicker seat making process? I have made a couple in the past but neither were a patch on the fine example I nearly stole from the Bristol. I would have got away with it too if it weren't for those pesky kids!!

Ian.

How about this for a nice little Bristol M1c
Span 6,75m 109kg 

Google Image Search

Ralf

I know this is small fry by comparison, but does anyone have experience of the BUSA Bristol M1 kit?
Is the kit OK and how does it fly?

How about this for a nice little Bristol M1c
Span 6,75m 109kg 

Google Image Search

Ralf

  which one is getting in

  cj

No spinner though...

Where do you get cowlings that big?

The spinner & the cowl might pose a problem with your design too Martin ........still think I'll be having a go at one though

@R101:
Once read an article in 'Scale' magazine by Traplet, got good credits, looks like a fine model to me

Got the plans today 
Must say Martin, you did a very well job indeed designing it! 

A really lightweight well thought out construction (I once was an E-flyer so I know what's light )

Walts, I think I might go too for the 1:3,5 scale version as well with the Laser 300V! 

Would be a very good combination I think (and the best model-sound available  )
(If the chap hasn't sold it already  )

A 22x8" prop should do it (28" prop would be scale)
Which prop did you fly with the ST3000?

Ralf

All sounds very encouraging I very nearly hit the order button for the plans late last night, but I want to see whats at Woodsprings too first Do you reckon the 300v will swing a 28 x8? Laser only recommend a 20 x 8 for this engine, which is what came on my one from my mate. This also puts me off building a bigger version as the prop would get eaten up by the cowl!
I read earlier about making the cowl from an old camping kettle, does the plan show construction for a scale spinner?
Thanks,
Walts.

Doh!! just read your post properly............A 22 x 8 don't sound so bad

Doh!! just read your post properly............A 22 x 8 don't sound so bad

My Saito 300TL swings a 20x10", and an 22x8" easily, maybe if I use it for the Bristol (would save me some bucks  ) a 24x6" could do too
There's really bags of power for a model like this
This Bristol has a true lightweight but sturdy design

Martin stated 25lbs for the Bristol, my 1:3,3 Moth with the Saito 300TL weighs 30lbs and goes vertical for at least 30m  

In my view the 300V will also be in the 'overpowered' range, but one can always play with the throttle   (or not...  )

Ralf

edit: scale spinner according to plans: 1/8 ply hollowed-out backplate (actually in front of prop) with glasscloth spinner
24,5cmx8,8cm

I an feel a multiple build thread coming!!

Ian.

Thanks for the info Ralf
 Ian, I'll probably build mine quietly to myself......don't want to steal someone Else's thunder

I'll probably build mine quietly to myself......

 Selfish bu99er

Ian.