IMAC Dalton 300 ml build thread.

[Trumpetman]

orthobird;6003 wrote: Gordon, are you still running the dual tanks on your Dalton? also, how is your 200 working for you?

Yup, two of the big Fortitude tanks are working well. I set the timer for 13 minutes and land with a nice bit of reserve. The DA200L is one sweet motor! It's a perfect match for the Dalton ML!

 

[orthobird]

murry;6692 wrote: Very good, mine mounted even with the top of the motor box with a spacer on the mount bolt to shim it down a bit. The cans won't dent up so bad with the mount on the thick part of the can and your air flow is improved somewhat compared to the wood ply mount.



I would sheet the motor box to keep the heat out of the fuse

i will do that today or tomorrow!! thanks again!!

 

[orthobird]

Trumpetman;6702 wrote: Yup, two of the big Fortitude tanks are working well. I set the timer for 13 minutes and land with a nice bit of reserve. The DA200L is one sweet motor! It's a perfect match for the Dalton ML!

i am thinking i will do the same, except i will use the FiJI bottles, 1 liter each, with the PSP caps. have those on all my other airplanes and have never had a cap leak yet. I will use Viton on the inside of the tank.

 

[pawnshopmike]

Thanks for the link to your build thread Doc. Enjoying all the pics and info. Looks like you're doing an awesome job! You must have the hands of a surgeon

 

[orthobird]

pawnshopmike;10505 wrote: Thanks for the link to your build thread Doc. Enjoying all the pics and info. Looks like you're doing an awesome job! You must have the hands of a surgeon

i wish!!

i am a way better surgeon than i am at building airplanes!!



i have done over 4500 hip and knee replacements. this will be like my 10th airplane ever that i put together in my whole life (kit plane), going back to when i was 10 years of age. My first kit was a Sig Kobra.



like this:

http://www.galaxia.co.il/SIG-KOBRA.jpghttp://www.galaxia.co.il/SIG-KOBRA.jpg[/url

 

[orthobird]

well, i have added the air dams for the vents. those have 4 mm t-nuts glued into plywood blocks glued to the frame-formers.

10850=4422-IMG_5988.jpg

10850=4421-IMG_5989.jpg

 

[orthobird]

next step is to finish sheeting the inside of the canister tunnel area. once this step is done, i will glue thin ply for the fuel tank vent nipples, then i can trial fit them, then remove them.

10859=4427-IMG_5990.jpg

 

[IMAC FANATIC]

Nice work there, those dams are an often overlooked but vital part of these machines. Those look solid and extremly functional. Ive still to decide on how ill complete mine.

 

[Alpha20]

Not seen so many dams before. Is it for getting rid of hot air?

 

[tl3]

orthobird;10850 wrote: well, i have added the air dams for the vents. those have 4 mm t-nuts glued into plywood blocks glued to the frame-formers.

Nice job on the air dams. FWIW, you can cut those down quite a bit and still have them develop more than enough low pressure area to to the job. Rick Byrd and Dean Nistetter did a bunch of tests on this a couple years ago and found the 1/8" was plenty or lip height to do the job.

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