Since there seems to be some interest, I'll do a make over thread.
the primus appears to be a nice hull, but there are some issues that need to be addressed. item 1) the sides of the hatch opening deflect fairly redily and because of this the tub and sponsons can bounce up/down quite easily. item 2) the afterplane is too long to be legal in the sport hydro class, item 3) the 'vented area' between sponsons is too deep also.
since when I got the hull the transom had been removed...taking care of the afterplane issue was phase 1 of the make over. to wit replace transom. I made a carbon ply carbon sandwich in the rough shape of the transom and epoxied it in place, followed by sanding and 'glassing it, so phase one is done. phase two, reducing the vented area. After checking drobie's pencil mark(and making it darker) against NAMBA rules I found that it was in the right place, next I cut two bits of 1/8" ply(one for each side) and glued the portside 'plug' in place. some Bondo (I dislike bondo) & spot putty and a good bit of sanding later the port side is done (yay!). I've also epoxied in some cf strip on the portside hatch opening to stiffen it up a bit, starboard side will get the same however that alone will not be enough, but I'll have to wait untill after the motor mount & stuffing tube are in place before I place the crossmember which should make for less sponson flap.
picture shows current progress
the primus appears to be a nice hull, but there are some issues that need to be addressed. item 1) the sides of the hatch opening deflect fairly redily and because of this the tub and sponsons can bounce up/down quite easily. item 2) the afterplane is too long to be legal in the sport hydro class, item 3) the 'vented area' between sponsons is too deep also.
since when I got the hull the transom had been removed...taking care of the afterplane issue was phase 1 of the make over. to wit replace transom. I made a carbon ply carbon sandwich in the rough shape of the transom and epoxied it in place, followed by sanding and 'glassing it, so phase one is done. phase two, reducing the vented area. After checking drobie's pencil mark(and making it darker) against NAMBA rules I found that it was in the right place, next I cut two bits of 1/8" ply(one for each side) and glued the portside 'plug' in place. some Bondo (I dislike bondo) & spot putty and a good bit of sanding later the port side is done (yay!). I've also epoxied in some cf strip on the portside hatch opening to stiffen it up a bit, starboard side will get the same however that alone will not be enough, but I'll have to wait untill after the motor mount & stuffing tube are in place before I place the crossmember which should make for less sponson flap.
picture shows current progress
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