Volvo Trim Tabs

joshmon71 · #1 07-06-2009, 06:17 PM

Can someone with the Ql tabs on a 23 take a measurement from bottom of the outside strake (hull bottom) to top of QL tab? Alternatively I am in Chatham MA (boat in south harwich) and for a six pack of your choice would appreciate the 15 seconds to measure myself! I cannot fit the 12x12 bennets with a bracket-I would need to drop the bracket/engine and cut it, the actuator hits the bracket on the 90 degree piece of bracket that meets the hull, so no way can finagle a cut when on the boat that I can figure out. Plus the bennet mounting plate for tab hits the bottom of the scupper ( could cut the mount plate I suppose). If the QL tabs will fit it is a no brainer. Took the boat out this weekend in some 2-4 seas in the Bay and off Race Point, and would have liked the tabs

. Just put a merc 4 blade revolution 17P prop on yesterday so will see how that does to help as well.

Thanks!

PS-The 300MM QL trim tabs=12 inches

kerneltugboat · #2 07-06-2009, 11:12 PM

Josh,

If I understand correctly you just need to know the height, I just got nack from Taiwan, I can measure them tomorrow. I have the 12" on my 27, feel free to take all the measurments you need, I am right on 137 in Chatham.

Dan

BA17 · #3 07-07-2009, 12:03 AM

Josh,
Those QL's are on a 23. I had the same problem, I would have had to cut my bracket to put the bennets back on. There is plenty of room for the QL's on my boat with a potter bracket. The boat is not at the house, but can try to get a measurement tomorrow afternoon.
BA

joshmon71 · #4 07-07-2009, 12:03 AM

Thanks Dan and BA. The bracket will not be the issue. But the scuppers are re-done amd shoot right out the back now, and they maybe are in the way is worry-the Bennet mount plate just hits them in fact. Dan I am just down street from you off Morton. Much appreciated! PM sent to Dan....

kerneltugboat · #5 07-07-2009, 01:02 PM

Josh,

Almost exactly 4" x 12" maybe just a hair over 4" on the height, including the distance from the bottom of the hull.

Dan

joshmon71 · #6 07-15-2009, 11:38 AM

Thanks Dan, I stopped by and chatted with your dad for 5 minuts, took some measurements. Should fit. QL tabs on order

.

thehermit · #7 12-01-2009, 12:05 PM

Hey Josh....where did you end up buying the QL tabs from? Got a good source?

Thanks

joshmon71 · #8 12-01-2009, 07:11 PM

think i got them from foreandaftmarine.com out of SoFl I think, maybe 600. but do check prices locally of course, and other places, not sure this is the best price.

i wrestled my install, note there are 6 or 8 screws per each tab, i opted to thru bolt thru my transom as not sure I liked screws partial into transom, and read my note about having to drill out more for correct angle making the screw approach more problamtic

. so got real long bolts (5" ss!) and then cut them back and washered them and double bolted on inside, liberal with 5200, and some dielectric as well on wires on inside. as far outboard as possible, but my scupper got in the way a little.

The real issue I had on install-they require a very flat surface with less than a few MM diff off on both vertical and horizontal, or those screws/bolts will cause the tabs to bend and you bind the tab operation. In my case, I grabbed a (1/4"? thick) piece of starboard to size, and sanded away, and sanded away, and test fit, and sanded. Think the Kernel(Dan) had a piece of glass fabricated to serve the same purpose, or you could put the boot to the transom with a sander. Highly unlikley your transom is flush enough but trust me when say they are sensitive to binding! I prob have extra starboard lying around if ya need a couple pieces instead of buying a sheet of the thinnest stuff.

Next I found the holes I drilled for the screws were not quite at the needed angle so that when you tightented down i again had tab binding issues due to torquing the tab so I just drilled out a little bigger was all at a more downward angle. Leading to the bolt versus screw solution.

Net is install tab,test that work, then unscrew the shebang, and then 5200

. or better have that orange solvent and a heat gun handy. been there done that.

As always, if you are overly cautious, drill out, then expoy, then drill again. Problem for me was I had to drill out these 6-8 holes to get the right angle for long bolts being tightened. so forgo the epoxy part since was a lot of testing and fitting and time already and figured I'd end back up with drilling out wider, and would have gone beyond the tab outline at that point with the epoxy to accomodate a 2"inch thick transom and angle needed.Last note, I never hooked these into my start key circuit, i put them on my house battery panel, did not like the idea of splicing my starter key circuit.

Don't be afraid though, i <font color="orange"> those tabs now!

PM me be glad to chat or show you my hard lessons learned

, you are down in Chatham?