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Forum: Engines & props 12 March 2014, 21:23
Replies: 23
Views: 13,354
Posted By supremesoundz
heres an update been out a couple times testing...

heres an update been out a couple times testing since the horrible choppy hail experiance

tried the same setup as before level with hijackers still to much bow lift even trimmed right in and revs...
Forum: Engines & props 12 February 2014, 15:35
Replies: 23
Views: 13,354
Posted By supremesoundz
Lol definitely need some more pitch this will...

Lol definitely need some more pitch this will also help with bow lift

I'd say I was sold on a cleaver as it's running on the surface but I do like getting airbourne on rollers to I don't play in...
Forum: Engines & props 11 February 2014, 18:23
Replies: 23
Views: 13,354
Posted By supremesoundz
Yeah was ventilating a gooden now it's raised up...

Yeah was ventilating a gooden now it's raised up and I've just checked on the power tech website my prop has 20degrees of rake which explains the bow lift from the extra power I've gained

The...
Forum: Engines & props 11 February 2014, 16:36
Replies: 23
Views: 13,354
Posted By supremesoundz
boyesen reeds came yesterday so today braved the...

boyesen reeds came yesterday so today braved the weather and went out in the eastury 6knot limit ;) today even got hailed on, it was a little choppy and quite windy,

i started off with the trim...
Forum: Engines & props 31 January 2014, 17:27
Replies: 23
Views: 13,354
Posted By supremesoundz
all good advice i think they do do a 16 and 17p...

all good advice i think they do do a 16 and 17p too so may be worth looking at, guess it will all be down to the revs im pulling at the moment with my powertech 12

it just needs to stop raining
Forum: Engines & props 30 January 2014, 20:02
Replies: 16
Views: 37,709
Posted By supremesoundz
i have a 20d which is infact the same as the 25n,...

i have a 20d which is infact the same as the 25n, different parts are the exhaust tuner tube, 20 has a washer restricting it halfway down

the other part thats different is the carbs,

ive got a...
Forum: Engines & props 30 January 2014, 17:17
Replies: 23
Views: 13,354
Posted By supremesoundz
ideal cheers roflhat tacho should be with me soon...

ideal cheers roflhat tacho should be with me soon (tiny tach)

id does look relatively flat in that pic thats with one hole out it does seem to quicken up the further i trim out but then when...
Forum: Engines & props 29 January 2014, 23:16
Replies: 23
Views: 13,354
Posted By supremesoundz
I'm with you so by adding small shims to the...

I'm with you so by adding small shims to the lower of the bracket I can add a few mm of trim rather than the massive distance between the holes

Yeah my motor is a 2 cylinder autolube same block as...
Forum: Engines & props 29 January 2014, 22:08
Replies: 23
Views: 13,354
Posted By supremesoundz
porting was done by a mate of mine that a marine...

porting was done by a mate of mine that a marine engineer just cleaned the exhaust ports up and matched the liner to the casting it was rough as a badgers behind was looking at getting the head...
Forum: Engines & props 29 January 2014, 21:41
Replies: 23
Views: 13,354
Posted By supremesoundz
ideal thanks :) hopefully going to brave the cols...

ideal thanks :) hopefully going to brave the cols and get some testing done this weekend, i have a tiny tach in the post so the revs are going to be sorted

also just downloaded a decent gps speedo...
Forum: Engines & props 29 January 2014, 21:13
Replies: 23
Views: 13,354
Posted By supremesoundz
brilliant thanks so starting center of the...

brilliant thanks so starting center of the hijackers will be a good start, thats wher im at now, previously had been running prop lining up with bottom of hijackers which was 50mm lower,
...
Forum: Engines & props 25 January 2014, 16:21
Replies: 23
Views: 13,354
Posted By supremesoundz
ceaser mini thundercat engine height...

as above just looking for advice on the best position of the center of the prop in relation to the hull

3m thundercat
yamaha 20hp 2 cylinder 2 stroke
powertech sra 12p


ive been running...
Forum: Engines & props 25 July 2013, 22:12
Replies: 1
Views: 4,757
Posted By supremesoundz
Yamaha 20hp tuning advice

Hi there thanks for reading I have a yamaha 2cyl 20hp 2 stroke engine, it's the 20d model
I know it's the same block as the 25n only differences from the parts lists are the carbs and exhaust...
Forum: Engines & props 10 January 2011, 15:25
Replies: 1
Views: 1,147
Posted By supremesoundz
mint yam 20hp 2 stroke with solas prop

up for grabs or ideally trade in for a tohatsu 30
Forum: Bits and pieces 04 January 2011, 15:25
Replies: 0
Views: 940
Posted By supremesoundz
wanted powertech sra 12 yam 20/25

as abowve im lookin for a powertech sra 12 pitch or any other semi cleaver for a yamaha 20 its not listed but has the same gear casing as the 25 model
Forum: Engines & props 23 September 2010, 14:07
Replies: 13
Views: 16,308
Posted By supremesoundz
il have a lil look and c if the bore is reduced...

il have a lil look and c if the bore is reduced but like the parts list suggests summat is different with the carb bodies must be diam, the main jets are the same on the 25 and the 20 so im assuming...
Forum: Engines & props 16 September 2010, 11:03
Replies: 22
Views: 6,318
Posted By supremesoundz
il keep my eyes out and c what happens did...

il keep my eyes out and c what happens

did some testing with the solas st/st prop which is a cupped prop with the same pitch as standard yesterday tried all trim settings the best one was one out...
Forum: Engines & props 10 September 2010, 12:07
Replies: 22
Views: 6,318
Posted By supremesoundz
yam got back to me with prices top carb...

yam got back to me with prices


top carb £168.88
bottom carb £192.67
exhaust £61.22
+vat

their going to find out any timing changes etc etc too
Forum: Engines & props 10 September 2010, 12:05
Replies: 22
Views: 6,318
Posted By supremesoundz
thanks for the info rik il have a look and get...

thanks for the info rik il have a look and get one ordered
Forum: Engines & props 10 September 2010, 11:29
Replies: 13
Views: 16,308
Posted By supremesoundz
ive just been out and whipped the air box lid off...

ive just been out and whipped the air box lid off and opend the throttle fully and the butterfly turns a full 90 degrees so its parrelel with the ground so wide open? linkage seems to move it...
Forum: Engines & props 10 September 2010, 11:15
Replies: 13
Views: 16,308
Posted By supremesoundz
when u say the stop do u mean the castings could...

when u say the stop do u mean the castings could be different so one allows the butterfly to open fully the other does not?

i was thinking maybe the bore was different allowing more air flow and...
Forum: Engines & props 10 September 2010, 11:10
Replies: 22
Views: 6,318
Posted By supremesoundz
hi thanks for having a look round for me im...

hi thanks for having a look round for me im looking into doing the factory upgrade at the mo i think from the parts list the carb bodies are different thought the jets are the same? so maybe a bigger...
Forum: Engines & props 08 September 2010, 21:21
Replies: 13
Views: 16,308
Posted By supremesoundz
The apparent differences are: Carb Assembly...

The apparent differences are:

Carb Assembly (top)
20D 6L3-14301-00
25N 6L2-14301-01

Carb Assembly (bottom)
20D 6L3-14302-00
25N 6L2-14302-01
Forum: Engines & props 08 September 2010, 11:17
Replies: 13
Views: 16,308
Posted By supremesoundz
really thats interesting? ive rung yam to get a...

really thats interesting? ive rung yam to get a cross referance on parts but they never got back to me? some one on the other post of mine about props said the carbs and also exhaust? do the carbs...
Forum: Engines & props 03 September 2010, 11:18
Replies: 22
Views: 6,318
Posted By supremesoundz
thanks for the info bus if u cld ask about it...

thanks for the info bus if u cld ask about it would be great? thomas at prop revolutions is one of the top guys for the t-cats apparently and he says without a doubt the powertech sra is by far the...
Showing results 1 to 25 of 31

 


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