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Outboard engine

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RED WARRIOR 545 says:

Hi, we just bought our A24 5 months ago and we're wandering about installing a 4hp engine in the back. Do you think 4 hp are enough for the A24?

Thanks and greetings from Barcelona
3:34PM, 31 March 2014 PDT (permalink)

busy home [deleted] says:

Goskar has a 4 hp Merc. 4stroke ample power. must be a long shaft
As long as its in the well it will be fine
Welcome.
Originally posted 64 months ago. (permalink)
busy home edited this topic 64 months ago.

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pjbharrison says:

Bienvenido
Welcome to the group.

I used a Yamaha 6hp 2 stroke in my A24. 2 stroke is much lighter engine than 4 stroke -easier to lif in and out of well.

A sail drive/high thrust prop will give better economy and better reversing and will still achieve max hull speed. If you're buying a new engine you should be able to order sail drive at no extra cost.
Previous discussion
www.flickr.com/groups/achilles24/discuss/7215762355857257...
Originally posted 64 months ago. (permalink)
pjbharrison edited this topic 64 months ago.

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Andrew Curry says:

I think a Mariner/Mercury 6hp is the engine of choice as its the same weight as the 4hp but gives you a bit more power.
64 months ago (permalink)

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AchillesHeeled says:

This is a subject that will prompt much happy debate. I'd say 4hp would be ok to get in and out of harbour, but if you were becalmed 20 miles from port, or were punching a strong tide and headwind, you'd wish you had 6hp. Bear in mind too that the engine in the well is REALLY noisy... running a larger engine at moderate revs will be a lot quieter than thrashing a smaller one.
64 months ago (permalink)

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NormanKlipspringer is a group administrator NormanKlipspringer says:

Welcome to the group. I have Tohatsu 4 st 6hp in well and Tohatsu 2 st 4hp as auxiliary stored on the pushpit. 4 st is more economical but heavier for same type. 4hp is about 0.5 knot less top speed. I would choose 2 stroke 6hp but2 st not now available new. As Ron says long shaft is necessary. My 6hp is ultra long and my 4hp is long. Both are sail drive high thrust props. Get charging alternator for battery charging.
Originally posted 64 months ago. (permalink)
NormanKlipspringer (a group admin) edited this topic 64 months ago.

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blueachilles says:

I'd agree with most on here. We have a 4hp 4st Mercury longshaft which is fine for getting on/off moorings and in/out of marinas, but its noisy for a long trip.

When the 4hp has misbehaved we have used our dinghy's Suzuki 2.5hp s/s for manoeuvring. This will move the boat well enough for short distances which shows you don't need a lot of power to shift an Achilles.
64 months ago (permalink)

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SHAMAL411 says:

My vote goes to having a 6HP 4stroke long shaft in the well . This provides a beautiful position for the propellor ( it's one of the great design features of the A24 ) and thrust can be kept up in the roughest of conditions .
We also have a 31/2 HP 4stroke Mariner on a drop down transom bracket which is great to have as an auxilliary . This will push us along at 5 knots in flatish water but with any chop the prop comes out of the water and it loses drive and over revs .
Originally posted 64 months ago. (permalink)
SHAMAL411 edited this topic 64 months ago.

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Fast Lex says:

Welcome and wish a lot of pleasure with your Achilles ! I am the black sheep of the family, I guess, since I have an 8 HP HONDA/ four stroke, I love the engine not for the power but low revs and very economical. I have placed it out of the well, ( for more comfort space), it steers well at sea but in the habour at low speed I need a bigger turning radius. You can see my pics with the motor on my photostream. good luck!!
64 months ago (permalink)

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RED WARRIOR 545 says:

Thank you all for your welcome and your advice. This group is very helpful for the beginners like us!
64 months ago (permalink)

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Scott and Portia1386 says:

I could not fault the Mercury/Mariner set up we have a 6HP 4st on Portia. Although you have to be careful with the petrol if you're not using the engine very much our carb got choked at the end of last season. For moving around and as a stand by we use a long shaft seagull 2.5HP of 1965 vintage. Its bit of a dinosaur but it works.
64 months ago (permalink)

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NormanKlipspringer is a group administrator NormanKlipspringer says:

Just a note of caution. 8hp 4 st will not fit in the well. 8 HP 2 st will fit in the well and is the smallest engine available with electric start if required and is twin cylinder. I am referring to Tohatsu but I think this applies across the board. Any engine bigger than 4hp especially if 4 st is heavy and will put high stress on the transom if located there. the 8hp 2st and the 6hp 4 stroke are about the same physical size. I also agree with the comments about the position of the prop. Speaking from experience engine on the transom is hopeless in rough conditions, but can usually get you home.
Originally posted 64 months ago. (permalink)
NormanKlipspringer (a group admin) edited this topic 64 months ago.

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rothwell_neil says:

Emily came with a Mariner 8Hp twin 2 stroke. Couldn't get it out of the well. Previous owner told me he dropped the bottom off to get it in! I filed off the corners of the anti ventilation plate. Not sure it went any faster with this than the 5Hp 4 stroke honda but as it was a beast to lift in and out it went. 5Hp was plenty and hit hull speed with this, spent most of time at about 60% to keep noise down.
64 months ago (permalink)

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A264 Clytie says:

I had a Yam 8hp 2 stroke in my first Achilles and an 8hp Tohatsu 2 stroke with this second boat and I'm happy with both. I don't like pottering and 8hp is sufficient to move along smartly.
64 months ago (permalink)

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Amrum 9171Y says:

Snifter came with a 5hp Honda 4st, which I used for cruising, but it weighed 25kg, so was heavy to lift in and out of the well, so stayed there most of the time. When racing I used a Tohatsu 3.5hp 2 st, which was great. It weighed 13kg, so easy to lift in and out of the well and put down below or attach to the pushpit, and it's performance was excellent, pushing the boat along almost as fast as the Honda. It was only used to get off and on the mooring. Both were very noisy in the well - the cockpit acts as an echo chamber, so putting on the transom has the advantage of much less noise, but as said by others, not good if there are waves!
64 months ago (permalink)

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RED WARRIOR 545 says:

Hi.
I related with the noise when the engine is in the well... have you ever tried installing a silentblock between the motor clamp and the well plate?. it could help reducing the structural noise transmission (not the aerial transmission). In other words, it could avoid the boat being an echo chamber. The kind of silentblock depends on the motor vibration frequency, materials, etc. so a little bit of brains are needed to have good results. I would try with Red Warrion but the last owner fiberglassed the well.
By the way... finally we'll continue with the 40 KG(!!!) 6hp Parsun engine that came with Red Warrior until I can effort something better.
64 months ago (permalink)

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Fast Lex says:

RED WARRIOR 545:

I am very curious, attach more pictures to your photostream. One picture is more worthy than a thousand words!
64 months ago (permalink)

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