HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Nov 01, 2009, 07:08 PM
Registered User
Joined Sep 2009
264 Posts
Discussion
26cc Sikk/CY Engine Boat Questions

I have purchased a 26cc CY engine and the tuned pipe attached.

I have lots of questions -

Question 1
With many hull designs available

MAXCAT
OFFSHORE MONO
WILDTHING
WASABI 1300

All scalable designs to make 45-52" inches.

I want to be able to go to the beach and jam around on open water - go to the lakes and if needed there is a small 150m pond for boating that still allows IC boats here in Edinburgh.

What hull would you recommend for these applications - not to sure competition is needed.

Question 2
Water cooling - do I need a pump? Or is the pressure from the pickup enough? I think I need a pump - but not sure.

Question 3
Submerged or surface drive? I don't like the idea of prop walk and think submerged is better - especially if I am in choppy water. Is this correct.

Question 4
I know gearboxes reduce output efficiency but I am curious on thoughts for a dual output counter rotating gearbox to split the power into two props.


This is to be a winter project to commence when I finish my jet boat.
http://www.rcgroups.com/forums/showthread.php?t=1126424
bermylizard is offline Find More Posts by bermylizard
Reply With Quote
Sign up now
to remove ads between posts
Old Nov 01, 2009, 11:14 PM
RC boat Rock Star
Kalamazoo, MI
Joined Apr 2004
2,911 Posts
Your lucky day in a way as I've had the same engine and pipe in my Falcon 41 Cat. You're going to like that pipe as it's a nice one for the price. It comes up on the pipe gently, you might be the only one that really notices it as it's that smooth.
1) What kind of hull do you like?
2) No pump needed, my flows water just fine without one.
3) Surface drive. Today's setups don't seem to have propwalk problems. Most propwalk is caused by a poorly prepared prop.
4) Ditch the dual prop idea, really.
Ron Olson is offline Find More Posts by Ron Olson
Reply With Quote
Old Nov 02, 2009, 02:07 AM
Registered User
Helsingborg, Sweden
Joined Jul 2005
262 Posts
For open water you will probably find that the mono hulls are a better option. Have to agree with Ron on points 2-4.
For an idea of what runs well on the open sea have a look at the Omra site.
w3bby is offline Find More Posts by w3bby
Reply With Quote
Old Nov 02, 2009, 11:59 AM
Registered User
wparsons's Avatar
Canada, ON, Markham
Joined Aug 2008
8,843 Posts
If you're running a clutch you might want a pump, otherwise you'll be fine. I can't tell from the picture if the engine has one or not.
wparsons is offline Find More Posts by wparsons
Reply With Quote
Old Nov 02, 2009, 02:11 PM
Registered User
Joined Sep 2009
264 Posts
No clutch - figure it is just more to break - but may look into it in the future.
bermylizard is offline Find More Posts by bermylizard
Reply With Quote
Old Nov 02, 2009, 03:54 PM
Registered User
Joined Jun 2009
98 Posts
No club in the UK will allow it to run with that pipe, they are far too noisy.
group11 is offline Find More Posts by group11
Reply With Quote
Old Nov 02, 2009, 05:32 PM
Registered User
Joined Sep 2009
264 Posts
Thanks for the advice! But I have already ordered a silencer from PCB. Yeah I do not want to piss anyone off with crazy noise, but I think the gas/petrol boat could be fun.
bermylizard is offline Find More Posts by bermylizard
Reply With Quote
Old Nov 02, 2009, 06:57 PM
usual old know-it-all
Blackpool,U.K.
Joined May 2005
1,313 Posts
Quote:
Originally Posted by group11 View Post
No club in the UK will allow it to run with that pipe, they are far too noisy.
you dont need to be in a club to run boats,its a free country.
I had one of those pipes,very good power.
Brod..
brodjack is offline Find More Posts by brodjack
Reply With Quote
Old Nov 02, 2009, 10:32 PM
RC boat Rock Star
Kalamazoo, MI
Joined Apr 2004
2,911 Posts
The pipe can be made quieter very easily as I've done it. It's called an internal stinger which is basically a piece of brass tubing run in through the stinger and goes as far as where the cones meet. A small hole is drilled where the pipe goes in just past the stinger to drain off fuel or water. It can be held in place with JB Weld or a tiny screw tapped into the stinger.
Ron Olson is offline Find More Posts by Ron Olson
Reply With Quote
Old Nov 03, 2009, 04:03 AM
Registered User
Joined Sep 2009
264 Posts
Quote:
Originally Posted by Ron Olson View Post
The pipe can be made quieter very easily as I've done it. It's called an internal stinger which is basically a piece of brass tubing run in through the stinger and goes as far as where the cones meet. A small hole is drilled where the pipe goes in just past the stinger to drain off fuel or water. It can be held in place with JB Weld or a tiny screw tapped into the stinger.
Do you mean that you slide a smaller pipe inside the stinger. This inserted pipe is basically half the lenght of the entire tuned pipe and gives a direct passage for the pressure to escape from the centre of the expansion chamber. This is could see working as it would not effect either the diffuser cone or the converger cone from operating.
bermylizard is offline Find More Posts by bermylizard
Reply With Quote
Old Nov 03, 2009, 07:27 AM
Registered User
Joined Sep 2009
264 Posts
I do have a debate whether or not I need these (money is tight). They are brand new. What do you reckon I could get for them combined ?

The engine, tuned pipe and silencer??
bermylizard is offline Find More Posts by bermylizard
Reply With Quote
Old Nov 03, 2009, 07:29 AM
RC boat Rock Star
Kalamazoo, MI
Joined Apr 2004
2,911 Posts
This is an example, just on a much smaller scale.
Money is tight all over. Some places you can save on shipping when combining orders but once on a while you can find package deals.
Ron Olson is offline Find More Posts by Ron Olson
Reply With Quote
Old Nov 03, 2009, 08:09 AM
Registered User
Joined Sep 2009
264 Posts
Thanks for the photo - makes it really clear.

I have already bought the stuff - but now I wish I had the money instead cause I have to insure the car soon.

I paid a total of 280 for everything.
bermylizard is offline Find More Posts by bermylizard
Last edited by bermylizard; Nov 03, 2009 at 08:23 AM.
Reply With Quote
Old Nov 13, 2009, 09:55 AM
Registered User
Joined Jan 2009
4 Posts
Quote:
Originally Posted by group11 View Post
No club in the UK will allow it to run with that pipe, they are far too noisy.
You can always "dump" the engine cooling water out through the tuned pipe (a wet pipe). This will loose some of the noise but unfortunately also a little of the power as well.
Picture is a RipTide from John Smith with a "Chug-a-Lug" (unknown) 26cc engine and fitted with OPS67 pipe (no baffles but wet piped) which is quiet.
If you go to http://www.modelgasboats.com/Magazin..._Muffled_Pipe/ there is the HendriX article on "How to....". Also some where on that site there is an article on making a Homemade Muffler by Marc LeVac
rcuk john is offline Find More Posts by rcuk john
Reply With Quote
Old Jul 10, 2013, 11:55 AM
Registered User
Joined Sep 2009
264 Posts
New (2 me) Hull Arrived!

Dear all,

I have finally opted for this 46" Enforcer (Gator) hull to plonk my 3 year old never run CY 26cc with oversized carb and pipe into. Here are some pics. I have a few questions.

1) How would you remove the rusted flexishaft? Pull out of transom or inward, does it matter? See image 3.

2) Can I rig up the throttle servo to cut off the engine when put in reverse instead of purchasing a 3rd channel TX-RX set?

3) Would you use this prop? (Image 2) I think I will to start anyway.

5) There are no existing holes in the stringers to mount the engine. I read that drilling them with a sharp bit and an pair of pliers works if you do not have the 90 deg drill attachment, any other suggestions?

I suppose there are more questions for later.
bermylizard is offline Find More Posts by bermylizard
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted 26CC or 38cc gasoline engine in trade for 50cc TODDRAPONI518 Aircraft - Fuel - Engines and Accessories (FS/W) 4 Oct 19, 2009 04:35 PM
Discussion CY 23 and 26cc motor pullstarts matt21191 Off-road Cars 2 Aug 16, 2009 09:12 AM
Sold CY/Fuelie 26cc + 23cc Engines zip1385 Cars - Cars and Parts (FS/W) 1 Mar 05, 2009 07:12 PM
Build Log CHINESE BOAT UPGRADED WITH ZENOA 26cc ENGINE. richclausen Racing Boats - Internal Combustion 7 Feb 06, 2009 11:36 AM
For Sale 44" Fiberglass Racing Boat with 26cc RC Gas Engine herbdusowitz Boats (FS/W) 1 Jun 07, 2008 09:57 AM