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GTX 3 cylinder with MHZ gearbox and trimax drives

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Old 10-23-2006, 08:22 PM
  #1  
xxxboatworks
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Default GTX 3 cylinder with MHZ gearbox and trimax drives

Here is another project i got going on. It will be a nice boat once she is done:
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Old 10-23-2006, 08:27 PM
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1outlaw
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

Sweet....Im not to far from you i think i need to check out your shop...[8D][8D][8D]
Old 10-23-2006, 08:30 PM
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xxxboatworks
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

Come on down anytime....You are pretty close to MHZ. Have you visted them yet?
Old 10-25-2006, 11:18 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

wow Raj, looks pretty ambitious from where I'm standing, but no doubt it will be a beautiful boat once it's done. Ken.
Old 10-25-2006, 11:26 PM
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xxxboatworks
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

Thanks Ken- where have you been??? Have you been running your GTX?
Old 10-26-2006, 11:47 AM
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saleens7
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

nice, you combine the engines or did they come that way??

howd you combine the trimax drives?? i only see em in single drive, not double..

MHZ is in ft. lauderdale, where are they located, they have a storefront or is it just a factory?
Old 10-26-2006, 01:39 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

a few more questions..

what are the dimensions of the boat??

what size trimax's..middle, large, XL???

what rudder is that...looks like an MHZ 90 sized??

what gear box are you using??
Old 10-26-2006, 02:31 PM
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xxxboatworks
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

The hull is 65" long
The trimax drives are XL
The rudder is from Expresscraft (It will polish up to look like chrome. The picture shows a raw part straight from the CNC machine)
The gearbox is from MHZ
Old 10-26-2006, 02:52 PM
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xxxboatworks
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

ORIGINAL: saleens7

nice, you combine the engines or did they come that way??

howd you combine the trimax drives?? i only see em in single drive, not double..

MHZ is in ft. lauderdale, where are they located, they have a storefront or is it just a factory?
The engines don't come that way. I sell/manufacture a kit to run the engines inline

The Trimax drives do not come that way. I linked them toether

MHZ is not in Ft>laudedale and I have no affiliation with them. I am out of Ft.lauderdale. MHZ-USA is operated out of a house in Ft. Myers, FL with no store front. The MHZ parts are manufactured in Europe.

I think I answered all your questions...
Old 10-26-2006, 03:06 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

Nice Job! Can you tell me where did you get the exhausts there hot[8D] the headders look rather long do you cut these down to suit your requirements and how much does this affect the tuning of the pipe? thanks john p.s how much are they
Old 10-26-2006, 03:17 PM
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xxxboatworks
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives


ORIGINAL: johnnyx

Nice Job! Can you tell me where did you get the exhausts there hot[8D] the headders look rather long do you cut these down to suit your requirements and how much does this affect the tuning of the pipe? thanks john p.s how much are they
Thanks! The exhaust tuned pipes and headers are BH hanson with marine specialties exhaust flanges. The headers will all be cut down and tuned to the same length. They are sold extra long so the builder can cut them to the proper length. The retail price from BHhanson is 159 each (I think) plus shipping.
Old 10-26-2006, 04:08 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

is that dollars? have you got a link for them alsso what type of bracket will you use to mount them the taper of the pipes would make this akward wouldnt it??
Old 10-26-2006, 04:35 PM
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xxxboatworks
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

Yes, that is in USD. The website is www.bhhanson.com. Warehouse hobbies, marine specialties and Sikk all make similar style pipes. The pipes will be supported by exhaust tips that I machine myself. All the pipes will be concealed under the hatch and the boat will have a scale appearance from the outside.
Old 10-26-2006, 08:39 PM
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Carlos Murphy
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives


Yer knees el be knockin when ya run er fer the first time... sure wish I could be there.

Are the engines "timed"? That is not just arbitrarily ganged together?
Old 10-26-2006, 09:10 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

Raj, unfortunately haven't been able to get to the lake in a while due to the amount of work here on the ranch and the fact that last time out, I was just so happy to find out that the prop everybody told me would be fine, the propshop 7016, is too small and does nothing but cavitation. So I'll have that up for sale soon, plus when I pulled the engine to clean the clutch dust out and just make sure that all the engine screws were tight, I pulled the exhaust off and now have to order another Header gasket because the last one doesn't seel anymore. Oh well, plus it's down to freezing out here already. Ken.
Old 10-26-2006, 09:18 PM
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xxxboatworks
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

ORIGINAL: Carlos Murphy


Yer knees el be knockin when ya run er fer the first time... sure wish I could be there.

Are the engines "timed"? That is not just arbitrarily ganged together?
Yes, the crankshafts are set at 120 degrees apart. On the two cylinder version, the pistons are 180 degrees from each other.

Frogman,
Have you tried a 275 on that boat yet? I sold you that boat, right? What gasket blew? Let me know and I'll send you one.
XXX
Old 10-26-2006, 09:36 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

The gasket between the header and the case is done after taking it off to tighten up everything on the engine, and yes you sold me the boat. Thanks for the offer. The original prop that I still have is the 275, but I have to send it out to be balanced/sharpened/polished. Ken.
Old 11-14-2006, 10:17 AM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

WOW!!!! And I love the way twiggers sound! That is way cool! Awesome job so far! Can wait for videos!

Make SURE you get a video!!!!!

Old 11-14-2006, 07:59 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

nice boat xxx. wish i had the money to run three powerplants. i am only putting one in my 57" mono. I would be embarassed to be at the lake at the same time as you[sm=lol.gif]. anyway. how does the trimax work for you? Is it worth the money or does it perform the same as the other drives out there?
Old 11-14-2006, 08:02 PM
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Default RE: GTX 3 cylinder with MHZ gearbox and trimax drives

sorry wrong post

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