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  Topic: Weight difference between 503 and 582
wakataka

Replies: 4
Views: 999

PostForum: Kolb-List   Posted: Wed Mar 25, 2020 4:37 pm   Subject: Re: Weight difference between 503 and 582
Those are reportedly all-up weights with radiator and coolant. The 532 block is lighter than the 503 but the radiators make up the difference.
  Topic: Weight difference between 503 and 582
wakataka

Replies: 4
Views: 999

PostForum: Kolb-List   Posted: Wed Mar 25, 2020 4:11 pm   Subject: Re: Weight difference between 503 and 582
This reference shows they both weigh 100#

https://rotaxrick.files.wordpress.com/2014/12/rotaxdecision.pdf
  Topic: Kolb air airworthiness directive
wakataka

Replies: 4
Views: 1630

PostForum: Kolb-List   Posted: Mon Aug 12, 2019 4:24 pm   Subject: Re: Kolb air airworthiness directive
I just received the parts and am in the process of installing them. The parts do the same job as that welded brace on your plane, so you should be good, assuming that both bellcranks have a similar br ...
  Topic: new video
wakataka

Replies: 8
Views: 2259

PostForum: Kolb-List   Posted: Wed Jun 05, 2019 7:46 pm   Subject: Re: new video
Great video. I found myself leaning over in my chair on some of those turns!

I don't know if I'd trust my old Rotax 377 enough to follow that route or not. My fun factor goes way down when I don't ...
  Topic: HKS / Firestar STATIC THRUST test
wakataka

Replies: 32
Views: 8197

PostForum: Kolb-List   Posted: Sun Nov 11, 2018 4:26 pm   Subject: Re: HKS / Firestar STATIC THRUST test
I measured 290 pounds static with a Rotax 377 turning a 66" Warp Drive prop. There was a slight amount of tailwind that day, so I suspect that number is slightly inflated, but I'm sure it produce ...
  Topic: He's BAAACK!!
wakataka

Replies: 2
Views: 1485

PostForum: Kolb-List   Posted: Tue Nov 28, 2017 7:24 pm   Subject: Re: He's BAAACK!!
Herb -
Looks like I'm going to be selling my Firestar. I own it jointly with a friend and he's getting out of flying. I've got another airplane so this one will be surplus. I haven't listed it anywh ...
  Topic: Gap seal
wakataka

Replies: 12
Views: 5764

PostForum: Kolb-List   Posted: Fri Aug 11, 2017 5:22 pm   Subject: Re: Gap seal
Brian Carpenter has come up with a great way to make gap seals from foam pool noodles. He pulls the noodles through a heated die.

https://electricmotorglider.com/2017/07/15/57-80-10-large-gap-seal/ ...
  Topic: The FireFly flies! (And it flies EXXCELLENT!)
wakataka

Replies: 23
Views: 9277

PostForum: Kolb-List   Posted: Wed Jul 19, 2017 9:12 pm   Subject: Re: The FireFly flies! (And it flies EXXCELLENT!)
Richard -

Congratulations on the successful first flight. I had about 100 hours on 277 engines before I went to Kawasaki, mainly to avoid vibration that was tearing up my airframe. The 277 is a rea ...
  Topic: fuel tank residue ID? Pull-start wimp?
wakataka

Replies: 6
Views: 2667

PostForum: Kolb-List   Posted: Fri Jul 07, 2017 1:03 pm   Subject: Re: fuel tank residue ID? Pull-start wimp?
That junk looks a lot like what you might see in the bottom of a float bowl that's been sitting for a few years. I'd toss that tank and get a new one. Just as old gas turns to varnish, old plastic get ...
  Topic: Kolb flyers/owners map
wakataka

Replies: 8
Views: 3869

PostForum: Kolb-List   Posted: Fri Jul 07, 2017 12:47 pm   Subject: Re: Kolb flyers/owners map
I put a pin on this map yesterday in Corning California and it's disappeared today. Anybody know what's causing that? Is it possible for anyone who logs in to just delete pins off the map?
  Topic: chase cam
wakataka

Replies: 1
Views: 1015

PostForum: Kolb-List   Posted: Sun Jun 25, 2017 11:02 am   Subject: Re: chase cam
At the risk of boring you all, here's a link to a couple of videos on the development of my chase cam.

https://youtu.be/Sq9gI2upNBI
https://youtu.be/egd30HslaSY

Here's one with some detailed ...
  Topic: Lord Mounts?
wakataka

Replies: 19
Views: 7163

PostForum: Kolb-List   Posted: Thu Jun 08, 2017 7:08 pm   Subject: Re: Lord Mounts?
One more thing to consider about the vibration. That wood airframe on the mini-max likely soaks up a whole lot more vibration than the chrome-moly cage on the kolb.

I found the IVO to be a good m ...
  Topic: Lord Mounts?
wakataka

Replies: 19
Views: 7163

PostForum: Kolb-List   Posted: Thu Jun 08, 2017 6:40 pm   Subject: Re: Lord Mounts?
Are those JATO bottles on either side of the tail rack? I bet that would would really help when passing semi-trucks on an uphill grade. Maybe you could mount them on the Kolb to help that 277 on a hot ...
  Topic: Lord Mounts?
wakataka

Replies: 19
Views: 7163

PostForum: Kolb-List   Posted: Tue Jun 06, 2017 11:49 am   Subject: Re: Lord Mounts?
I don't think the mounts get stiff with age. The 277 is just a vibrating little beast. You can use softer mounts but it will decrease your thrust measurably. I tried three different grades of mount wh ...
  Topic: Kolb Firestar 1...
wakataka

Replies: 8
Views: 2160

PostForum: Kolb-List   Posted: Thu Oct 27, 2016 7:48 pm   Subject: Re: Kolb Firestar 1...
The Ducati ignition system has a small inductive 'trigger' mounted behind the flywheel. There are no breaker points.
  Topic: Kolb Firestar 1...
wakataka

Replies: 8
Views: 2160

PostForum: Kolb-List   Posted: Wed Oct 26, 2016 7:33 pm   Subject: Re: Kolb Firestar 1...
The snowmobile engines had a Ducati electronic ignition with a single two-lead coil and a 'black box' that could be mounted in various places. It's a good system. I believe it has an electronic advanc ...
  Topic: Weight of a bare forward fuselage for a Firefly
wakataka

Replies: 1
Views: 1119

PostForum: Kolb-List   Posted: Tue Oct 18, 2016 7:10 am   Subject: Weight of a bare forward fuselage for a Firefly
I'm toying around with an original design for an ultralight and wondering if anyone knows what the welded forward fuselage for a Firefly (or Firestar) weighs? I'm coming up with a weight of about 33 p ...
  Topic: Lithium Batteries
wakataka

Replies: 5
Views: 1843

PostForum: Kolb-List   Posted: Thu Jun 02, 2016 7:07 pm   Subject: Re: Lithium Batteries
When you ran out of juice, did it permanently kill the battery, or were you able to keep using it?
  Topic: Lithium Batteries
wakataka

Replies: 5
Views: 1843

PostForum: Kolb-List   Posted: Wed Jun 01, 2016 8:59 pm   Subject: Re: Lithium Batteries
I've been running one (a Shorai) for almost 3 years now and it's been great. I never put a charger on it. Even after 6 weeks of sitting, the starter spins just like I flew it the day before.

I'm i ...
  Topic: Horizontal stabilizer seals
wakataka

Replies: 23
Views: 9193

PostForum: Kolb-List   Posted: Thu Jan 07, 2016 9:49 pm   Subject: Re: Horizontal stabilizer seals
Any idea why sealing the elevator gap had such an effect on the rudder effectiveness? I wouldn't have expected that.

I'd love to see a photo of the seals you built. I'm planning to recover my Fire ...
 
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