I will say that as a younger member (I'm only 42, so that's pretty young compared to the average age of most car clubs, more particularly of orphaned cars), I've gotten very quick responses to every question I've asked, both on the forum and by email to specific club members. I don't post answers to most questions, because I personally do not have the knowledge. I've lurked on the forum for years, but only joined the club in the last few years, because I didn't have a car, and got updates from my father who was a member.
The simple fact is, younger people in general are just not that interested in car collecting. Most of them don't have a connection to them. They'll go to shows on the weekends, look at them, then go home and forget about them. My connection to Kaisers is through my late father. He loved old cars and old aircraft and shared those loves with me. His family had a number of Kaisers growing up, and they were his favorite. The fact is, until I bought my Dad a 53 Manhattan 5 years ago, I had never even been for a ride in one, much less driven one, because the 54 that my Dad owned wasn't in running condition, and with 3 kids and a disabled wife, my father had neither the time, nor the money to fix it. Now, that has fallen to me, and, come hell or high water, I will drive that 54 one day.
As far as forum membership and participation goes, the plain and simple truth is that this form of online communication is dying, something I have much personal experience with both as an administrator of multiple forums in the past and as a user for over 20 years. 1) They can be costly to maintain. You either need to buy or rent a server and bandwidth to support it. Even using a free version like this one does just means you have to rely on someone else to keep paying for the service. They don't always last. 2) It often requires technical knowledge to maintain, which means time and effort that you have to put in, and often uncompensated for time. A lot of people don't have the time. If they do, they often get burned out after a while and choose to spend their time elsewhere. 3) Many groups are just moving to Facebook. I personally dislike using Facebook for this sort of thing, because it's not as easily searchable and can often get drowned out with Facebook's algorithms on how they display things on your news feed. However, it's free, easy, and has a high user penetration rate. I've seen 2 forums that were once heavily active (hundreds of posts per day) go nearly dormant, as everyone has transferred to Facebook groups. It has also caused a high degree of fragmentation, since what was once all covered on one forum with multiple sub forums is now split into well over 50 Facebook groups.
Getting younger people involved is difficult with ANY group.Again, something I have a pretty good amount of experience with, having either been the president of, or board member of, multiple non-profit organizations. People are happy to make use of your services, but are often very reluctant to pay to join, or donate their own time to help get things done. Without that it basically just ends up falling back upon the same people, time and again, and they either burn out and leave, or they become entrenched and things become difficult to change. It's just reality.
