Measure your 4-6 hp engine for me please

BogMonster · 30 May 2010, 16:57

Could anybody with a 4 to 6hp 4 stroke engine do me a favour please....

I'm getting the Vipermax built without the rear-facing lip on the transom so I can put an aux engine on the transom, but a snag has come up in that the original engine I was going to get (Mariner 4hp with the Sailmate high thrust prop) apparently can only fit over a transom that is about 55mm thick while according to both Downhilldai here Mariner Sailmate and Roy Bishop measuring his own boat, the transom on the Vipermax is 60mm thick.

There is a bit of a questionmark over this as I have seen photos of what appears to be a Mercury 4hp fitted onto a Vipermax, see attached, so can anybody measure either a Merc or Mariner engine and double check the inside measurement of the bracket please? I'm not sure whose boat this is now, to ask them what the engine is or whether it was modified to allow it to fit.

Meanwhile if anybody with a 4, 5 or 6hp would be kind enough to open the saddle clamp right up and tell me how thick a transom could be hammered in there, that would be appreciated

I'm still keen on the Sailmate engine because of the high thrust prop but really don't want to order something that doesn't fit....

Many thanks

NautiSeacrets · 31 May 2010, 07:41

I have a 6hp Mariner 4 stroke. Will measure this evening for you. Out on the RIB today!

(It's also for sale, for any viewers to this post)

Turbodiesel · 31 May 2010, 09:13

Not sure if you can see this, if not i can e mail it to you. Drawing shows 52.4mm

BogMonster · 02 June 2010, 21:40

Thanks for the replies so far - any more for different engines please?

BogMonster · 15 June 2010, 10:26

<Bump>

Does anybody else have measurements or info on any engines with a 60mm saddle please?

OR any info on the Vmax pictured above and how the Merc 4hp which shouldn't fit, was fitted?

Ta

kwil · 15 June 2010, 10:45

My aux is badged as a Mariner 4HP Sailpower but is also avail as Tohatsu 5HP and that is 59.5 mm.

Keith

Downhilldai · 15 June 2010, 11:24

Jono Garton and/or Ian Sharlot rigged that Vipermax in the pics and should be able to advise you how they got the aux to fit.

I reckon they may have replaced the cups on the transom screws with something flat.

BogMonster · 16 June 2010, 01:19

I could never get an answer out of Jono either on here or by email when I was looking for RIB prices, anybody know how to contact him or have contact details for Ian (is he on RIBnet?)

However it did give me an idea and I looked at the post Jono put up ages ago with all the photos of that boat and from the attached, if you assume the A frame tube is 50mm which I think is correct (?) then the transom looks to be thicker than that so would assume probably the standard 60mm so it must have been a mod to the motor not the boat - DHD I think you are probably right. I've had mine built without the lip so maybe just need to do a slight mod to the motor.

Does anybody know who owns that boat now? I'd like to get a decent photo of what has been done if I could, I seem to remember it was for sale a while back.

Ta