Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 1 of 10 123 ... LastLast
Results 1 to 25 of 227

  1. #1
    ryan_t888's Avatar
    Join Date
    Jul 2005
    Location
    Hamilton, ON, CANADA
    Posts
    5,500
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    The Unofficial 7.5cc Tunnel Thread

    I would like to turn this thread in to something that can be very useful for anyone with a 7.5 Tunnel. Information on stock or modified 7.5cc engines can be shared here as well as all the tunnels available on the market.

    I'll start with my DPI 33" Tunnel that I have owned for a little over 4 years after purchasing it used, and it is still my absolute favourite boat.

    It sports a K&B with a Silver Bullet pipe from HTBboats, muffler and prop shaft rebuild kit from www.ovalexpressracing.com , Hitec 5645 steering servo, futaba S3004 throttle servo, 4+8oz tank, failsafe and 4 cell 4.8v receiver battery. I'm pretty happy with this setup. Using 25% nitro and a Prather 230, I'm in the low 40's. I'll have an accurate GPS figure soon to come.

    Here are a couple photos. I hope together we will come up with a very valuable thread and shed some more light on the 7.5 OB class.

    Thanks
    Ryan


    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Ki18461.jpg 
Views:	33 
Size:	188.3 KB 
ID:	749703   Click image for larger version. 

Name:	Ql32826.jpg 
Views:	50 
Size:	182.5 KB 
ID:	749704  

  2. #2

    Join Date
    Aug 2005
    Location
    greendale, IN
    Posts
    2,544
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Good idea Ryan[sm=thumbup.gif],

    this is an HTB-360-2, 36" in length, .45 Rossi, lawless lower unit, carbon fiber salisbury pipe but now i'm using the Silent pipe by Irwin, likes x447 prop, 1/4 scale steering futaba servo, futaba micro for throttle,nomadio 2.4Ghz radio.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Pn35703.jpg 
Views:	32 
Size:	50.0 KB 
ID:	749713   Click image for larger version. 

Name:	Je11071.jpg 
Views:	29 
Size:	40.7 KB 
ID:	749714   Click image for larger version. 

Name:	Ek14923.jpg 
Views:	33 
Size:	219.8 KB 
ID:	749715  
    losi,warhead,dirtbike,,HTB360-2 ,HS Dumas,Nitro hammer, H&M Tunnnel,hydrofoamie,nomadio sensor,cat31,OB SW36

  3. #3

    Join Date
    Mar 2006
    Location
    Cedar Rapids, IA
    Posts
    154
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    very good idea! Now we need a 3.5 tunnel thread also! As I dont have a 7.5 boat
    Rodney Pierce

  4. #4

    Join Date
    Apr 2004
    Location
    aurora, IL
    Posts
    106
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Its kinda funny I happened to come across this I have a 32" prather lap cat II that I have had since I was a teenager. I have not driven it in about 3 years last year I figured it was time to rip it apart and repaint & rebuild it. With young kids It has taken alot longer than wanted. Anyway I've only painted one boat in my life and I want to do it nice. Just wondering if any one has some ideas on themes. Im also not sure if I want to go with decals or not. I also wondered if the flames on most boats that I see on this site are decals or decals used to paint the flames. Any help, ideas or pics would be great thanks.

  5. #5

    Join Date
    Nov 2005
    Location
    Decatur , GA
    Posts
    259
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    You can check out the tunnels on this site www.HandRcustoms.com He is the guy who paints all of my and most of my teams boats. You may not want to spend the money to get him to do it, (although its not too expensive), but it will give you an idea of some paint schemes.

    ~James

    PS, good thread, somebody go ahead and start a 3.5 tunnel thread too!

    PPS, so who is bringing a 7.5 tunnel to the World Tunnel Champs next year? I am!
    James Clegg, Owner, Ovalexpressracing.com

  6. #6

    Join Date
    Mar 2006
    Location
    Cedar Rapids, IA
    Posts
    154
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    James, I will start a 3.5 tunnel thread right now Rodney Pierce
    Rodney Pierce

  7. #7

    Join Date
    Sep 2003
    Location
    Cape Town, SOUTH AFRICA
    Posts
    76
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Thanks for the great thread, I know I'll be using it allot. Lot of pro's in here to ask for help.

    My Rossi powered tunnel finally started to run consistantly this weekend. I got some great practice laps in for next weekend's club race. I really looking forward to my first race. Allthough my boat is not the fastest out there yet , I'm confident she will get there although I must say that allot of our races have been won by consistancy and not speed. Allthough speed makes it a lot more fun.

    Check out my "fan" in the pic.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Hf99627.jpg 
Views:	34 
Size:	58.7 KB 
ID:	750628  

  8. #8

    Join Date
    Mar 2005
    Location
    sydney, AUSTRALIA
    Posts
    181
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    NICE THREAD!!

    Ive got a super pro K&B and im having a WOF built soon. might get a different motor though.

  9. #9
    ryan_t888's Avatar
    Join Date
    Jul 2005
    Location
    Hamilton, ON, CANADA
    Posts
    5,500
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Wave waker, that a pretty sweet setup. I wanted to go ROSSI last year but from what I've heard, I'm not sure if it is worth it. How fast has your Rossi pushed that hull?

    Ryan

  10. #10

    Join Date
    Nov 2005
    Location
    Decatur , GA
    Posts
    259
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Rossi 7.5's are great engines. They run better than, and are of better quality than a K&B. On top of that, you can actually get Rossi's, unlike K&B's We run Rossi's on our 7.5's with great success, stock or modified. They just need a little tweak here and there, as with darn near any engine.

    Just my $.02 ~James
    James Clegg, Owner, Ovalexpressracing.com

  11. #11

    Join Date
    May 2007
    Location
    Vicksburg, MI
    Posts
    21

    RE: The Unofficial 7.5cc Tunnel Thread

    anyone have any idea on when the TS3 is coming out?????

  12. #12
    ryan_t888's Avatar
    Join Date
    Jul 2005
    Location
    Hamilton, ON, CANADA
    Posts
    5,500
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    I doubt it will be for a 7.5 engine.

    Ryan

  13. #13

    Join Date
    Jan 2007
    Location
    Naples, FL
    Posts
    63
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread


    Hey Jan the Man where is your venue in Cape Town that looks like TweeWaters kloof!!!!
    Cheers Ou Boetie
    Peter T

  14. #14

    Join Date
    Aug 2005
    Location
    greendale, IN
    Posts
    2,544
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread


    ORIGINAL: Jan_the_man

    Thanks for the great thread, I know I'll be using it allot. Lot of pro's in here to ask for help.

    My Rossi powered tunnel finally started to run consistantly this weekend. I got some great practice laps in for next weekend's club race. I really looking forward to my first race. Allthough my boat is not the fastest out there yet , I'm confident she will get there although I must say that allot of our races have been won by consistancy and not speed. Allthough speed makes it a lot more fun.

    Check out my "fan" in the pic.

    how cool it could be running boat with chopper hovering above[sm=thumbup.gif]
    losi,warhead,dirtbike,,HTB360-2 ,HS Dumas,Nitro hammer, H&M Tunnnel,hydrofoamie,nomadio sensor,cat31,OB SW36

  15. #15

    Join Date
    Apr 2007
    Location
    Cape Town, , SOUTH AFRICA
    Posts
    822
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    No Peter we are Cape Town side of Paarl. At the turnoff to Wellington. Our dam is about 1% of t-waters.

  16. #16

    Join Date
    Sep 2003
    Location
    Cape Town, SOUTH AFRICA
    Posts
    76
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    It's a great venue to race at , I would just like to be able to spend more time there , but we are a bit restricted by the farmer who owns the dam. I can definately use the practice and setup time on the water.

    We just finished modifying the stock rossi carb last night and will be testing it soon. Just waiting for the remote needles to arive from OER.

    I haven't done a speed test yet and will rather wait and play a bit before I do that. Like I said she still isn't the fastest out there...

  17. #17

    Join Date
    Aug 2007
    Location
    Gauteng, SOUTH AFRICA
    Posts
    25
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Hey All,

    I have had a 7.5 tunnel since 1994 (K&B). it was a gift from my father. It has collected dust over the years but I'm dragging it out for a refit.

    The one obvious fact I notice is it has no exhaust or muffler, if nothing else it is incredibly noisy. Does anyone know where i could get them from?

    Second was on the KB site and saw they have a 16.4cc outboard now. Anyone using that on a tunnel or is it too heavy/powerful.

    Thanks for the Help

    The greater the challenge, the greater the reward

  18. #18
    ryan_t888's Avatar
    Join Date
    Jul 2005
    Location
    Hamilton, ON, CANADA
    Posts
    5,500
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Try www.ovalexpressracing.com.

    He has a header, pipe and muffler that will work very well for your K&B.

    - HTB Silver Bullet 7.5cc Tuned Pipe
    - HTB 3.5cc/7.5cc/11cc Aluminum K&B Header
    - OER 7.5cc Add-On Muffler. Custom Fit

    Post a photo of your Tunnel. I wouldn't recommend going any larger than 7.5cc for a 33-37" hull. A 7.5 will be fast enough!

    Ryan

  19. #19

    Join Date
    Aug 2007
    Location
    Gauteng, SOUTH AFRICA
    Posts
    25
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Thanks Ryan,

    Will have a look at the site now.
    At present theboat completly sanded to the base coat, but will dig of photo from its prime and add it on..

    L8r
    The greater the challenge, the greater the reward

  20. #20

    Join Date
    Apr 2007
    Location
    Cape Town, , SOUTH AFRICA
    Posts
    822
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Hi Rowley15

    Cobus Fourie here from South African Model Powerboat Association. We have a representative of OER in Cape Town. Their is guys racing in Gauteng and the club is growing quite nicely. Please feel free to contact me at 021 558 1301 or 084 558 1301 for contact details.

  21. #21

    Join Date
    Aug 2007
    Location
    Gauteng, SOUTH AFRICA
    Posts
    25
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Hey Cobus,

    Many thanks for the info, I will do that.

    Go the Bokke!

    The greater the challenge, the greater the reward

  22. #22

    Join Date
    Jan 2007
    Location
    Naples, FL
    Posts
    63
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread


    Hey Rowley, the Bokke going to win the world cup, 7 days till the whistle blows.
    Go the ALL BLACKS !!!!
    Cheers Peter

  23. #23

    Join Date
    Apr 2007
    Location
    Cape Town, , SOUTH AFRICA
    Posts
    822
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    How can you say in one sentence the Bokke's going to win and in the next sentence cheer for the Down under boys. Might I asume you might be from down under Peter T

  24. #24

    Join Date
    Jan 2007
    Location
    Naples, FL
    Posts
    63
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread


    From Zim Cobus, !! so I suppose I should support the Bokke hey looking forward to the World Cup
    Cheers
    Peter

  25. #25

    Join Date
    Aug 2007
    Location
    Gauteng, SOUTH AFRICA
    Posts
    25
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: The Unofficial 7.5cc Tunnel Thread

    Ya, World cup gonna be a cracker..

    Back to the Boats, anyone tried to use a third channel to change the engine trim while running?

    Should not be too dificult..
    The greater the challenge, the greater the reward


Page 1 of 10 123 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
RCU Reviews
All times are GMT -8. The time now is 04:59 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.