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  1. Chip W. Erwin

    True Story about TrueLite — Update on this Much-Anticipated Part 103 Ultralight Entry

    2 Minute wing fold. Cosmos 300 engine. BTW, It's Erwin
  2. Chip W. Erwin

    #550 Zenair floats

    We now have 750 float kits available. Finished floats will be in our booth at Sun n Fun again this year.
  3. Chip W. Erwin

    Serious eSTOL

    I am working on a parallel hybrid aircraft.
  4. Chip W. Erwin

    Electric takeoff boost

    My wife thinks I am napping on the couch but really been creating and patenting things like you are discussing.
  5. Chip W. Erwin

    Electric takeoff boost

  6. Chip W. Erwin

    Part 103 and floats

    YES. Aeromarine offers an aluminum perfect-sized 750 straight float that weighs 30 lbs each. I do not recall Part 103 having any mention of installation, but those struts generally replace the gear being removed so the interpretation would be that a Part 103 floatplane can weigh 60 lbs more with...
  7. Chip W. Erwin

    Searching for scratch plans for floats

    Those floats on the Kolb are from my Czech factory years ago. I am now offering new 750 floats in kit or finished form. See them at SNF show or on my web page aeromarine-lsa.com
  8. Chip W. Erwin

    Parts Wanted Polini thor 250

    I have a Polini 250DS available. It has around 10 hours on it on the prototype Merlin Lite. Now we are done with the prototype and using the 303DS for production. Location is X49 South Lakeland Airport Florida. Make an offer. Have BRS 500 softpack available too.
  9. Chip W. Erwin

    Ultralight float recommendations

    Under an agreement with Chris Heintz years ago I built several models of floats from Zenair drawings then over time improved their designs and expanded the line with our own designs. I may even have built your floats. Now Aeromarine has digitalized the 750 float and made it perfect. We have them...
  10. Chip W. Erwin

    #550 Zenair floats

    I built dozens of CZECH floats based on the Zenair line of floats under an agreement with Chris Heintz and have been flying floatplanes for 40 years. My advice FWIW: * 550 will be too small unless you will be flying a true Part 103 ultralight and at a low gross weight. I stopped making them. The...
  11. Chip W. Erwin

    POLINI THOR 250

    Would you happen to have a Polini 250DS power curve chart? Or know the HP/KW at 5,000 and 5,500 RPM?
  12. Chip W. Erwin

    Zenair Zipper

    I had a few Zippers in the 1980s. Twin engine on floats!
  13. Chip W. Erwin

    Zenair Zipper

  14. Chip W. Erwin

    Chip is making progress with the Merlin Lite

    I do see some posts about Vtwins and Ace redrives. All good work. I am using a redrive from Ace custom to our Vtwin specs. I also have a propeller made matched to the Vtwin torque and the Merlin speeds. But the real key is we deal factory-direct. I have arranged a dedicated Vtwin engine...
  15. Chip W. Erwin

    Aeromarine 60hp V-Twin Engine

    Yes we do plan to offer the larger Vtwins. But first we will deliver a few containers of this 60hp Vtwin. Still writing install and maintenance manuals....
  16. Chip W. Erwin

    Chip is making progress with the Merlin Lite

    Not possible. The computer manages both motors and if one shuts down the other shuts down within a fraction of a second. Note that this is only a proof of concept. Not planning on selling it anytime soon.
  17. Chip W. Erwin

    Aeromarine 60hp V-Twin Engine

    Thanks for posting this article. But it has nothing to do with the Vtwin. This is a Part 103 ultralight. Power is the Polini 303DS or a 30kw electric motor. The DEP-OD is a research project and is not yet for sale, if ever. We have measured 70 lbs of thrust each motor so we do nearly double our...
  18. Chip W. Erwin

    Aeromarine 60hp V-Twin Engine

    We have our own dedicated production run of engines made exactly to Aeromarine's specifications. Even a longer dipstick to access the oil level from the top cowl hatch on our Merlin. We fill a container of engines then reship to customers from our USA fulfilment center. Customers have no CVT...
  19. Chip W. Erwin

    Zenair Zipper

    I had 2 or 3 Zippers. One was a 2-seater, twin engines, on floats.
  20. Chip W. Erwin

    Aeromarine 60hp V-Twin Engine

    This thread was just brought to my attention. I am glad to answer questions as best I can here or by e-mail [email protected] We are currently shipping engines with reduction drives and props and have a good supply of everything. We are focusing on the new firewall forward installation for the...
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