The latest fins from Tribal fins have been getting great results so far and should see some nice speeds over the next few months
Fins looks great except the back of the fin is on the board and potential for some rear end damage to the board if you hit a solid object or fitting the fin if its a tight fit
not knocking the fins mark but i have made fins with an overhang and payed the price, these fins are made for shallow water and high speed if you hit a rock you can split the box aswell as the board , for me i would take 5mm off for a bit of insurance ??
Select to expand quoteaussieboats said..
tribal fins just fit into the boxs , i havnt had to sand one yet
Ive got a few boards and every box is different sounds like the tribals will fix the problem ??
Select to expand quotekeef said..
not knocking the fins mark but i have made fins with an overhang and payed the price, these fins are made for shallow water and high speed if you hit a rock you can split the box aswell as the board , for me i would take 5mm off for a bit of insurance ??
Got a great deal of respect for the tribals, but I'm glad I'm not the only one who thought that!
That's pretty much all it takes. A brief introduction to grumpy's rock and the weed is evidence that the front of the fin has lifted, meaning the trailing edge had to go somewhere. But, luckily the trailing edge has been tapered to cater for that event. When I get a tribal, that's what I'll be doing with the trailing edge.
Select to expand quotepepe47 said..
That's pretty much all it takes. A brief introduction to grumpy's rock and the weed is evidence that the front of the fin has lifted, meaning the trailing edge had to go somewhere. But, luckily the trailing edge has been tapered to cater for that event. When I get a tribal, that's what I'll be doing with the trailing edge.
Maybe it's time they released a long version tuttle box
Picky here, but on first observation the Tribal fin is not a Delta shape. Its similar to MUF , weed
So far the 14cm fin has been used in 70 litre speeds boards
the 16cm 80 litres - 90 litre boards
Iam getting a couple of 12cm made at the moment to use in the 61 and 71 patrik speed boards
Thanks AB
Wonder what potential performance loss there would be if you put some form of cutout at the base of the trailing edge.
Select to expand quotemorts said..
Thanks AB
Wonder what potential performance loss there would be if you put some form of cutout at the base of the trailing edge.
Dont hit anything and you wont need to stuff one up.
They seem to be using smaller ones than you would use if using a delta, they must be good.
Anyone done GPS with them and have a speed potential comment? Without other fins in the results.
I need one!
Select to expand quotepepe47 said..
I would imagine a bevel as in pepe's fin above would be contributing to somthing like a cut out
Select to expand quotekeef said..pepe47 said..
I would imagine a bevel as in pepe's fin above would be contributing to somthing like a cut out
Pepe is onto it, no brainer....
Select to expand quoteStretchy said..keef said..pepe47 said..
I would imagine a bevel as in pepe's fin above would be contributing to somthing like a cut out
Pepe is onto it, no brainer....
Cut out & spin out?
Select to expand quoteBSN101 said..
Anyone done GPS with them and have a speed potential comment? Without other fins in the results.
I need one!
Proof of concept: gpsteamchallenge.com.au/sailor_session/show?team=20&date=2018-06-17
Cheers
Marty
Select to expand quoteMartinF2 said..BSN101 said..
Anyone done GPS with them and have a speed potential comment? Without other fins in the results.
I need one!
Proof of concept: gpsteamchallenge.com.au/sailor_session/show?team=20&date=2018-06-17
Cheers
Marty
Yep saw that but what speeds with the Tribal? He used a few fins & boards
Sammy's PB NM on one of them, he was well happy with the fin
gpsteamchallenge.com.au/sailor_session/show?team=2&date=2018-02-02
That's some seriously dense weed down at Albany with lots of drag.
gpsteamchallenge.com.au/sailor_session/show?date=2018-07-08&team=20
Cams pbs on the Tribal fins , the new Delta is working a treat
Select to expand quoteaussieboats said..
gpsteamchallenge.com.au/sailor_session/show?date=2018-07-08&team=20
Cams pbs on the Tribal fins , the new Delta is working a treat
If Dr Cam was on a delta what size would he have used?
Just interested to see size comparison so i can workout what size to get
I thought I just read 16, with an evo 9 (6.4) and an iso 80. If that's right I might be looking at an 18-20 for a 90 litre board? Depending on the sail of course.
Select to expand quoteaussieboats said..
18cm maybe 20 cm
Is there weed were he is sailing?
Select to expand quoteAUS4 said..aussieboats said..
18cm maybe 20 cm
Is there weed were he is sailing?
It was 16cm, Cam's looking more for clearance.
There was some advice about changing the trailing edge so the next shipment of fins will have the gap at the back of the fin so if you do hit really hard it wont impact on the fin box .
Also the fins will size down to 10cm for any keen sailors to go that shallow , i have 12cm coming for the little speed boards will post results as soon as we get a chance to try them .
Select to expand quoteaussieboats said..
There was some advice about changing the trailing edge so the next shipment of fins will have the gap at the back of the fin so if you do hit really hard it wont impact on the fin box .
Also the fins will size down to 10cm for any keen sailors to go that shallow , i have 12cm coming for the little speed boards will post results as soon as we get a chance to try them .
I remember back when speed board fins broke through the 20 cm barrier. Mathew noted it was moving towards the field of tribology.
10 cm !! There's not far to go now!
L. Burstein, in Tribology for Engineers, 2011
3.3
Regimes of lubrication
With regard to lubricant film thickness between surfaces in relative motion, four regimes can be recognized: hydrodynamic, boundary, mixed, and elastohydrodynamic. The parameter usually used for characterizing these regimes is the ratio of the minimal film thickness h to the asperity height Ra.
en.wikipedia.org/wiki/Stribeck_curve
Select to expand quoteaussieboats said..
There was some advice about changing the trailing edge so the next shipment of fins will have the gap at the back of the fin so if you do hit really hard it wont impact on the fin box .
Also the fins will size down to 10cm for any keen sailors to go that shallow , i have 12cm coming for the little speed boards will post results as soon as we get a chance to try them .
Really have a good think about sailing in shallow water and decide if the danger is really worth it just to get a number, would like to sail with you guys again.
Select to expand quotejimbob SA said..aussieboats said..
There was some advice about changing the trailing edge so the next shipment of fins will have the gap at the back of the fin so if you do hit really hard it wont impact on the fin box .
Also the fins will size down to 10cm for any keen sailors to go that shallow , i have 12cm coming for the little speed boards will post results as soon as we get a chance to try them .
Really have a good think about sailing in shallow water and decide if the danger is really worth it just to get a number, would like to sail with you guys again.
Good point Jimbob. One catapult in ankle deep water and you could be permanently in a wheelchair or worse......
