B-8M/KB-2 compatability

[RayAR3]

They look similar. Is the KB-2 just an extension of the B-8M after they stopped producing kits in the '80's? If so, are the parts compatable with each other?

[Timchick]

Here's a long story short. Ken Brock was a Bensen dealer way back when. He started seeing areas on the Bensens where he could make some improvements. He started modifying them and at some point he broke away from being a Bensen dealer and started selling his own. There are some things that are different between the 2 models, one being the joystick mechanism. I'm not sure how many parts are interchangeable. Someone else can chime in and fill in the blanks.

[RayAR3]

Thanks. I'm assuming mine is a Bensen because of the angled vertical stab. However, mine has not only the overhead controls with a throttle, but also a joystick. Too bad there wasn't a data plate on it, and there was no story behind the craft when I picked it up.

[Ron Iaconis]

The gyro arena is no different than the Harleys. Everyone adds or takes away from the original designs. Many make their own joysticks/designs( pump/push/pull). Tails are modified/or created totally from scratch. There are no two gyros alike, but basically they are similar.

[RayAR3]

I am beginning to see that as I search the internet on information.

I also called Ken Brock Manf. today to ask about the compatibility because I am going to need to replace all the steel hardware on the ship. The woman said that a new joystick should interchange fine, as people have done it in the past.

However, I also asked about Mac engines, and she said that they no longer deal with the engines (asked about converting my 72 hp to a 90). So I have a new problem if, when I tear the engine down, I find something that needs rework or rebuild. I forgot to ask if they still deal in parts, she specifically stated that they no longer sell engines.

...I feel I'm in over my head even before I remove the first bolt!!! That's why I like this stuff though...

[Timchick]

R&D Engineering has Mac parts. They are located in Texas. Their number is 903-527-2006. The most important thing you can do to your Mac is add the electronic ignition kit Rick Whitridge (he's on the forum) has for the Macs. Another thing you'll have to do is verify which carb is on your Mac. The Holley 1940 is the better carb.