Does anyone know if having your fin too far into the box can cause spinout/turbulence, a few mms. My fins dont fit to well.
I don't really know Tony, can't be ideal but mine fit deeper than yours after I repaired my box, I don't have a problem with spin out.
Try spacing your fin and see how you go ?
Fin spin out is mostly due to gear being out of tune and too much back hand pressure or fin size too small.
Other than this you might just have a bad fin or good fin with bad finishing touch.
Fin box position in and out a few mm is irrelevant.
what board, sail, mast and fin are you using when this occurs?
The talon is a good fin, but only when super powered up conditions when u cant use most other good fins and carbon fins. These are developed for high winds and rough water and therefore are super soft feel.
I owned a 32 and 34 and always felt like i was going sideways. I later sold these off and bought some vector canefires and recently moved to vector volts.
Even a 34 talon on my isonic 87 felt a bit dull in moderate wind strengths.
OK so you could try adjusting your harness lines so you have less backhand pressure, sand your fin with super smooth sand paper, think about how much backfoot pressure you are using, try to keep this constant, as large changes will cause spin outs. Maybe put the mast track back to help load up the fin more.
I havent used the CASL66 but it sounds like u might need a 40cm for your standard size fin. You usually run a slighter larger size with Talons.
Hope this helps, otherwise try a stiffer fin unless its nuking.
get some spray putty from the auto one or the likes and tape up ya fin give the box a few coats and hey presto a nice tight box .. nothing better ;-) another tool 
Carbon Arts have notoriously big boxes I have a sl70 & sl52, a fin that sits flush in an Isonic will sit 1-3mm down in a Carbon Art,first time I saw this was on one of slowboats setups when quizzed he reconed down is fine proud is a problem.
although interesting that the Venoms were (from what I can only guess) superseded by the wider tip higher aspect Stings.
fin box gaps, gullies and imperfections should not exist if you want to go fast!!!!
I noticed the other day that my board felt really draggy with a fin that was too high i nthe box, came in, put a bit of duct tape at either end of the box, fits fits better.....still sailing slowly :(
although interesting that the Venoms were (from what I can only guess) superseded by the wider tip higher aspect Stings.
although interesting that the Venoms were (from what I can only guess) superseded by the wider tip higher aspect Stings.
Te Hau,
Yes I'm very heavy on my back foot so I gather being soft the Venoms weren't suited to my sailing style (or lack there of). Nice to know the Stings rectified the same issues I had with the Venoms.
I would love to try a Sting in comparison to the Talon as the C3 fins I had (x4) were very well made and fitted in the tuttle box perfectly (always flush too). Don't want to brand bash but to be brutally honest as much as I like the Talons, quality can be an issue as I've needed to sand the housing on them all (x5) and two have had resin in the screw hole. I know a few that have snapped at the base (me included) within the norms of general sailing (Not good when you're a long way out to sea 
)
Would like some feedback if anyone has tried both in similar sizes.
PS - Tonyd, Apologies for hijacking thread
Te Hau I dont think softness was the problem but more the amount of rake on the Venoms. There are plenty on softer fins out there but more upright.
i have a venom 42.
when powered up I like it.
very comfortable to sail on.
I don't think its the greatest for pointing upwind though.
I have 36 and 40 Talons. Agree that unless powered they can let go if pushed too hard but they come back easy as. just push with front leg and pull with back.
When they are lit up and across and off the wind they are very slippery!!
used the new Sting II 44 and it seems super stiff and cranks upwind, major lift.
As Vando says, everyone has their personal preference.
To answer the initial query yes having your fin sit too far in the box can cause spinout, don't want any more than 2mm there.
As others have said the talon's are a fin you need to have a light back foot with, similar to the venom's in that regard.
Talon's are a very flat in the foil profile, select s10's are a little similar. You can go bigger which gives more lift but the foil is still very slippery through the water. Both are easy to pull back into place once they've twitched though. The later talon's changed the profile slightly.
From what i've tried of the venom's go 2-4cm bigger than you normally would & they lock in very nice.
As vando said it's alot about style (& size), but it's as much about matching gear also- talon's work beautiful in some boards & don't spinout at all.
