flex in SIB longside, front triangle - Page 2

Max... · 06 June 2012, 17:43

Why not just get a Bombard Aerotec with a 25hp 2 stroke - all designed to work together, more than enough speed and will handle chop better than any other SIB.

Peter_C · 06 June 2012, 18:18

Have you ever moved around and and removed and installed a 30hp motor? They are heavy! A crane setup of some kind would help big time.

At the same time, bigger is most always better! Bigger boat, more horsepower = safer, fun.

I heard many people say a 15hp is comfortable to handle single handed.

MKII_CGT · 06 June 2012, 23:59

Quote:

Originally Posted by Peter_C

Have you ever moved around and and removed and installed a 30hp motor? They are heavy! A crane setup of some kind would help big time.

A crane...

I have found no problem lifting engines up to 25hp but have never handled a 30hp.

I helped lift a 40hp 3 cylinder and that was a real lump of a motor, they use the same engine right up to 70hp so it's a fair donk of a thing. I wouldn't want to be handling that one on my own.

I guess it depends on how physically strong/weak you are and how heavy the motor is. Some weigh less than others and that's the motor that I would be looking for - the lightest one you could find.

What's the average weight for a 30hp twin cylinder 2 stroke? 50-60kgs?

snakeeater · 07 June 2012, 04:31

Already handled it, its probably about 55kg. Its identical to a 25hp, just runs at higher compression. Will be ok without crane.

So since I am now tending to the 4m class:
Any difference between 3.8 and 4.2m in handling, speed, stability?
I suppose 3.8 is faster and swifter? Or no difference?
4.2 would be a bit more stable

Rib is no option at the moment.

MKII_CGT · 07 June 2012, 05:10

Quote:

Originally Posted by snakeeater

Already handled it, its probably about 55kg. Its identical to a 25hp, just runs at higher compression. Will be ok without crane.

So since I am now tending to the 4m class:
Any difference between 3.8 and 4.2m in handling, speed, stability?
I suppose 3.8 is faster and swifter? Or no difference?
4.2 would be a bit more stable

Rib is no option at the moment.

The 4.2 will handle better, depends on how much you want to spend.

azzurro · 07 June 2012, 08:45

Quote:

Originally Posted by snakeeater

Already handled it, its probably about 55kg. Its identical to a 25hp, just runs at higher compression. Will be ok without crane.

So since I am now tending to the 4m class:
Any difference between 3.8 and 4.2m in handling, speed, stability?
I suppose 3.8 is faster and swifter? Or no difference?
4.2 would be a bit more stable

Rib is no option at the moment.

55kg 30 hp 2 stroke? That must be manual start. I guess that if you can handle that weight you can also pull start it.

I would not use a 30hp engine with a mount-dismount boat.

4.2 meter boats are usually long shaft engine. That's more weight.

Max... · 07 June 2012, 09:02

Wow, there are some seriously stong dudes on this forum....this topic is getting silly - the OP is now going to run a 4m SIB and 55kg engine out of his car boot...

I'm an average sized bloke and found a 15hp 2 stroke Yam (36kg) a real struggle and could not realistically comfortably use it lugging up and down a beach or in and out of the Landy.

For me a 9.8 2 stoke is the comfortable limit for manhandling in/out of vehicle, onto boat, up/down beach etc. As for a 25 or 30 HP + forget it - this should be another Fibnet topic - not how fast is your RIB but how big an engine can you lift...

MKII_CGT · 07 June 2012, 09:35

Quote:

Originally Posted by Max...

this topic is getting silly - the OP is now going to run a 4m SIB and 55kg engine out of his car boot...

It's been a little silly for a while now!

snakeeater · 07 June 2012, 12:08

I am so sorry, I shouldn't have started like this

. I more and more understand how this all sounds to you. Maybe I was a bit stupid as a beginner and too optimistic, but hopefully not crazy

Still appreciate that some of you try to help.

My situation is a bit different, I am in Asia. Having a trailer here is practically impossible. On the other hand I can drag the stuff just onto the pickup and drive right to the water. Anyways not intending to mount and sib it alone.

The other thing would be a RIB 350. Deflated that would just be at the limit of car transport and storage. Still sightly scared of the storage/transport

In terms of safe/fun boating: Would you rather get a 3.5m RIB or 4.2m SIB?

So here we are. Yes, you told me before

MKII_CGT · 07 June 2012, 12:22

I would go with a 4.2

snakeeater · 07 June 2012, 15:00

RIB 380 vs. SIB 420? (assuming I could handle the transport of the RIB)

azzurro · 07 June 2012, 15:16

Quote:

Originally Posted by snakeeater

RIB 380 vs. SIB 420? (assuming I could handle the transport of the RIB)

420 SIB will weight less than a 380 RIB. Thus, smaller engine can be perfect, and you will save a lot in petrol. Beware large SIBs often need long shaft engine.

Nevertheless, 420 is too heavy to mount/dismount.

I would go for a 380 SIB (Bombard Aerotech/Honwave) and a 18HP Tohatsu 2 stroke if mounting/dismounting, provided you have a high pressure pump to inflate the floor to the proper pressure.

Also, a Zodiac Futura small enough would be a good option. And if what you demand is speed, go for a zapcat or similar.

But the best rule is:
First choose the engine then get the boat.