They have a very loyal following for sure. Jacques does too and rightly so. But maybe anytime you get your hands dirty for hours/ years on end with a project that preoccupies your mind you are invariably going to be passionate about what you built.OneWayTraffic wrote: ↑Tue Nov 17, 2020 1:51 pm
Tolman skiffs have nearly an identical hull shape to the C series boats. About 45 deadrise at entry, 10 degrees at transom. Constant deadrise over the last half of the hull. I have the book, and it's a good read. Main difference to the C series is that the stern is not pinched at all. The C series have a slight pinch. Because of that they are often stretched. The C17 is almost identical to a widebody (except for the chine flats) and the C19 would probably be similar to a shorter jumbo.
The important point is that Tolman skiffs are often stretched to any arbitary length. It doesn't seem to affect the properties of them much.
I have read a few stories/ posts about the Tolman’s and some great trips by their owners. Amazing fuel economy report (by a David Nolan who built a Jumbo 27) when compared to factory built boats doing the same overnight trips out for tuna.
I can’t help but wonder how much of this is due to weight being so much lighter than any inherent quality of hull design?
I believe there was a David Gerr article that basically summed up boat efficiency down to 1) weight 2) longer and leaner 3) efficient power source and all else is minor detail.... (I may be misquoting though)!
I also have the Novi 23 plans - which I believe is a “Variable Deadrise” or “Warped Plane” design. To my untrained eye the difference is very subtle between that and the C series. Yet I believe the Novi and DE builders report almost no planing hump. I am very curious about this subtle distinction, how it is achieved and why it isn’t taken advantage of more often.
I wonder whether the Tolman’s have a noticeable planing hump given they are a constant deadrise?
I am also curious why Tolman chose the constant deadrise?
In any case, whatever was decided I guess it worked because people do seem to love them.
I am also curious as to how the designs are lengthened. Do builders increase the bottom thickness and glass or simply add extra frames?
I am hoping to find out soon enough how mine will perform!