Reply
 
Thread Tools Search this Thread
 
Old 16 April 2017, 18:31   #221
Member
 
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 7,441
RIBase
That looks a mean boat mate love the ranger too
__________________
jeffstevens763@g is offline   Reply With Quote
Old 18 April 2017, 20:19   #222
Member
 
Roflhat's Avatar
 
Country: UK - Scotland
Town: Isle of Lewis
Boat name: Macleod Special
Make: Ceasar Thundercat
Length: 4m +
Engine: Yamaha 70ces
Join Date: Jul 2010
Posts: 1,189
RIBase
Got out for a blast last night, weather was really nice, not warm though!
Engine is up at 70mm and revving a bit higher but roughly the same speed, 57.5 knots with myself and my girlfriend in it.
Went into a cave with it -


At the beach


hopefully a video attached from Sunday as well
Attached Files
__________________
Roflhat is offline   Reply With Quote
Old 20 April 2017, 13:59   #223
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
Black is killer
__________________
fel2 is offline   Reply With Quote
Old 20 April 2017, 13:59   #224
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
My thundercat

[attach]

Can't wait to try mine !!
Attached Thumbnails
Click image for larger version

Name:	IMG_2008.jpg
Views:	190
Size:	64.5 KB
ID:	119058  
__________________
fel2 is offline   Reply With Quote
Old 20 April 2017, 14:02   #225
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
Do your think your boat is more stable with the bigger engine on the back ? At what point it does make a difference ?
__________________
fel2 is offline   Reply With Quote
Old 20 April 2017, 15:16   #226
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 5,596
Bloody 'ell...well done! I hope you never get too much air under it!!
__________________
JW.
jwalker is offline   Reply With Quote
Old 20 April 2017, 15:18   #227
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 5,596
Oh aye, where about is that pontoon, Valtos Uig I guess but where abouts and is there public access? Ta.
__________________
JW.
jwalker is offline   Reply With Quote
Old 20 April 2017, 18:08   #228
Member
 
Roflhat's Avatar
 
Country: UK - Scotland
Town: Isle of Lewis
Boat name: Macleod Special
Make: Ceasar Thundercat
Length: 4m +
Engine: Yamaha 70ces
Join Date: Jul 2010
Posts: 1,189
RIBase
Quote:
Originally Posted by fel2 View Post
Can't wait to try mine !!

Do your think your boat is more stable with the bigger engine on the back ? At what point it does make a difference ?
Love the red, looks really cool!
The boat feels more stable with the 70hp, maybe because I don't have to run as much trim to get the speed from it. Feels like I could cruise all day at 50 knots, whereas 50 knots with the tohatsu felt like you were driving on the limit

Quote:
Originally Posted by jwalker View Post
Bloody 'ell...well done! I hope you never get too much air under it!!
Thanks, so do I! so far so good but I'm still taking it easy while I get more used to the setup.

Quote:
Originally Posted by jwalker View Post
Oh aye, where about is that pontoon, Valtos Uig I guess but where abouts and is there public access? Ta.
It's in Miavaig, Uig. Just before Valtos:


There's a slipway you can use just across the bay to launch, and tying up at the pontoon is no problem.
__________________
Roflhat is offline   Reply With Quote
Old 20 April 2017, 20:29   #229
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 5,596
Ok, thanks. Is there drinking water available about there and is it in order to stay a night against the pontoon?
__________________
JW.
jwalker is offline   Reply With Quote
Old 20 April 2017, 21:27   #230
Member
 
Roflhat's Avatar
 
Country: UK - Scotland
Town: Isle of Lewis
Boat name: Macleod Special
Make: Ceasar Thundercat
Length: 4m +
Engine: Yamaha 70ces
Join Date: Jul 2010
Posts: 1,189
RIBase
There's power outlets and fresh water hoses on the pontoon, staying overnight shouldn't be a problem, you may have to tie alongside another boat
__________________
Roflhat is offline   Reply With Quote
Old 20 April 2017, 22:31   #231
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 5,596
Okidokey, thanks for that Seumas.
__________________
JW.
jwalker is offline   Reply With Quote
Old 21 April 2017, 00:51   #232
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
My thundercat

Click image for larger version

Name:	IMG_2016.JPG
Views:	189
Size:	188.3 KB
ID:	119070

Yamaha 70hp 1987
Need 1 piston/ring

600$.

Beside the middle casing and the lower unit is there something else needed to make it shortshaft ?
__________________
fel2 is offline   Reply With Quote
Old 21 April 2017, 04:17   #233
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
http://hpbc.ca/viewtopic.php?f=19&t=3575&start=0

Here good info on the swap !!!!
__________________
fel2 is offline   Reply With Quote
Old 21 April 2017, 04:18   #234
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
I did find a 70HP with 1 blown piston. Other are 120 lbs.

600$


Click image for larger version

Name:	IMG_2016.JPG
Views:	175
Size:	188.3 KB
ID:	119073
__________________
fel2 is offline   Reply With Quote
Old 21 April 2017, 04:22   #235
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
70CES stands for Competition Electric Short....There is another model called 60C which the C stands for Commercial ...then there are the Enduro models which are a little different again.
I have not found any yamaha short shaft model 30 to 70 hp where the short shaft is an exact 15 inch like the Mercury or OMC. Some like the 30 yamaha are well over 16 inch. The 70CES is a little longer as well. A long shaft 70 hp yamaha with the big foot is approximately 20.5 to 21 inch. By switching to the smaller 55 hp foot the length is a little over 19 inch.
The confusing part is all the models of the same horsepower. Different part numbers for what could or could not be the same parts. The last 2 digits for parts such as mid or gear case is the colour of the paint,
__________________
fel2 is offline   Reply With Quote
Old 21 April 2017, 06:56   #236
Member
 
Roflhat's Avatar
 
Country: UK - Scotland
Town: Isle of Lewis
Boat name: Macleod Special
Make: Ceasar Thundercat
Length: 4m +
Engine: Yamaha 70ces
Join Date: Jul 2010
Posts: 1,189
RIBase
I've spoken to Hounddog before, he has a wealth of knowledge on these engines!

I think the parts you need to put together a short shaft 70 (non CES) are:
50hp transom bracket (or 55/60 short)
cut and welded 70hp mid section (or 55/60 short mid)
60d or 70ces gearbox (if you want the 1.71 ratio, for 1.84 there are more options)
a good powerhead

then the 60hp enduro and pull start if you want that, if not standard 70hp cowl will fit

If you do build one, it's just as easy to put a 90hp powerhead on the 60hp mid as it is to put a 70hp

So basically if you're putting one together from scratch it's definitely best to start with one of the old 55/60 2 cyl short shafts, that will give you most of the bits you need bar the powerhead. Although if you do find a 55/60 short then it would make a good motor as is for a surfcat
__________________
Roflhat is offline   Reply With Quote
Old 21 April 2017, 07:12   #237
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
If part was avaible more easily around me
I think it would be doable.
__________________
fel2 is offline   Reply With Quote
Old 28 April 2017, 04:46   #238
Member
 
fel2's Avatar
 
Country: Canada
Town: Québec
Length: 3m +
Join Date: Dec 2016
Posts: 59
Click image for larger version

Name:	IMG_2053.jpg
Views:	284
Size:	159.8 KB
ID:	119244Click image for larger version

Name:	IMG_2052.jpg
Views:	216
Size:	64.1 KB
ID:	119245
__________________
fel2 is offline   Reply With Quote
Old 30 April 2017, 07:11   #239
Member
 
Roflhat's Avatar
 
Country: UK - Scotland
Town: Isle of Lewis
Boat name: Macleod Special
Make: Ceasar Thundercat
Length: 4m +
Engine: Yamaha 70ces
Join Date: Jul 2010
Posts: 1,189
RIBase
I like that a lot! looks even better than I expected, the red is excellent
__________________
Roflhat is offline   Reply With Quote
Old 04 May 2017, 17:03   #240
Member
 
Roflhat's Avatar
 
Country: UK - Scotland
Town: Isle of Lewis
Boat name: Macleod Special
Make: Ceasar Thundercat
Length: 4m +
Engine: Yamaha 70ces
Join Date: Jul 2010
Posts: 1,189
RIBase
Was down at Easdale over the weekend at the Rib Rendezvous, had a really great time. Had an issue with the pull start before the event started, managed to get it fixed just in time on Saturday morning and caught up with the rest of the RIBs, over 30 the first day!
Covered over 90 nautical miles on the first day, plenty of chop so gave the boat a good run. Also some nice calm sections to go flat out, used around 80 lt of fuel - thirsty!






The thundercat was a very wet ride but a lot of fun!
__________________
Roflhat is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 06:46.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.