HOTR twin build

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  • Brushless55
    Creator
    • Oct 2008
    • 9488

    #181
    Thanks !!
    I'm about to solder some up
    .NAMBA20...Caterpillar UL-1, P-Spec OM29, P-Mono DF33, P-Spec JAE, Aussie 33" Hydro-LSH, Sprintcat CC2028 on 8s, PT SS45 Q Hydro, PS295 UL-1 power, OSE Brothers Outlaw QMono 4-sale, Rio 51z CC2028 on 8s

    Comment

    • Rumdog
      Fast Electric Addict!
      • Mar 2009
      • 6453

      #182
      hmmm, 540 8L's each on 3s and cr 442's would be quite fast as well, with no worries on amperage.

      Comment

      • KillerDave
        Senior Member
        • Oct 2009
        • 370

        #183
        Originally posted by tiqueman
        Hmm, have a look at the motor or "engine" description for this boat http://translate.google.com/translat...fortune%2Ehtml

        Feigao makes em?

        Found this (pic) as a reference on RCU

        heres link http://www.rcuniverse.com/forum/m_53...tm.htm#5888669
        I'm not familiar with Vortex VX4L / 6 motors, If they do come from Feigao, What would they compare to???? e.g.... 5408L??? If it does 50000 rpm on 3s, that's like 4500KV????
        HPR C-5009, Riptide48, PaynPak 1/12, Miss Budweiser 1/8 Hydro, Miss Freya (own design 1/8 Hydro), HOR 32, Twin 380 HOR 32, Magin one

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        • tiqueman
          Fast Electric Addict!
          • Jul 2009
          • 5669

          #184
          Originally posted by Brushless55
          Thanks !!
          I'm about to solder some up
          I used the 5.5 bullets from Steven. I took one with me to the LHS and got a solid rod that would go thru the soldering holes. Its snug on one and a little loose on the other. Cant remember which, be it the male or female bullet. Anyway, It really locked together well. Ive since wrapped them in shrink wrap, but I need to find a wrap that will go more than 2:1. I will post some pics of them and some progress I made yesterday and today shortly.
          Geico epoxy laminate hatch sale thread Black Jack epoxy laminate hatch sale thread
          HPR06 6S Twin HOTR Genesis (SOLD) Vantex 32" cat Geico racing
          WEST FL MODEL BOAT CLUB www.scottskiracing.com

          Comment

          • tiqueman
            Fast Electric Addict!
            • Jul 2009
            • 5669

            #185
            Updates

            Got the front filled w/ flotation and the bulkhead glassed in. Sevo mount is installed, got the Octura rudder, but Im not quite sure if its going to be large enough. I think its the same size as the EKOS, and in scale relationship, its the same ratio if not a tad more than what the HPR06 w/ the HPR rudder. Guess time will tell. Also installed one side of the batt hold down, just to see how it will work and how things will fit. Wow, talk about no room. Motor doesnt quite slide in as it did before, but still goes in easily, just w/ a little "puzzle" like installation. Hope I get my stingers tomorrow or Sat. I want to get this thing wet Sunday.....
            Attached Files
            Geico epoxy laminate hatch sale thread Black Jack epoxy laminate hatch sale thread
            HPR06 6S Twin HOTR Genesis (SOLD) Vantex 32" cat Geico racing
            WEST FL MODEL BOAT CLUB www.scottskiracing.com

            Comment

            • bonewar
              Senior Member
              • Jan 2008
              • 549

              #186
              NICE WORK DUDE!!!

              That servo set up looks good.

              I think your rudder will work well.

              Not far to go!!

              Bonewar
              SIMRAD MARITIMO TWIN 1512 NEU'S , M12 MARITIMO SINGLE 1527 NEU , SV27 1509 NEU , SV27 NITRO O.S. 18CV-R 3.0cc WATER COOLED RACE ENGINE.

              Comment

              • tiqueman
                Fast Electric Addict!
                • Jul 2009
                • 5669

                #187
                Originally posted by bonewar
                NICE WORK DUDE!!!

                That servo set up looks good.

                I think your rudder will work well.

                Not far to go!!

                Bonewar
                Thanks Rick.... Thanks for inspiring the CF work for the build

                I got the rest of the battery hold downs in.
                Attached Files
                Geico epoxy laminate hatch sale thread Black Jack epoxy laminate hatch sale thread
                HPR06 6S Twin HOTR Genesis (SOLD) Vantex 32" cat Geico racing
                WEST FL MODEL BOAT CLUB www.scottskiracing.com

                Comment

                • bonewar
                  Senior Member
                  • Jan 2008
                  • 549

                  #188
                  Scott,

                  I like your idea putting the cells on the tunnel floor.
                  I would like to build a cat with the motor esc and lipos in the middle of the hull .
                  I really think these type of cats would handle better.
                  With the weight in the middle, The hull tends to roll around the center line faster and return to its normal position. There for giving the hull better handling characteristics.
                  Which i think would make the hull faster.
                  Keep up the good work mate.

                  Bonewar
                  SIMRAD MARITIMO TWIN 1512 NEU'S , M12 MARITIMO SINGLE 1527 NEU , SV27 1509 NEU , SV27 NITRO O.S. 18CV-R 3.0cc WATER COOLED RACE ENGINE.

                  Comment

                  • Jeff Wohlt
                    Fast Electric Addict!
                    • Jan 2008
                    • 2716

                    #189
                    Generally keeping your weight at the lowest part of the sponson is better. But with twins the motors may keep the weight lower since lipos are light.

                    Bonewar...check your pms
                    www.rcraceboat.com

                    [email protected]

                    Comment

                    • tiqueman
                      Fast Electric Addict!
                      • Jul 2009
                      • 5669

                      #190
                      Originally posted by Jeff Wohlt
                      Generally keeping your weight at the lowest part of the sponson is better. But with twins the motors may keep the weight lower since lipos are light.

                      Bonewar...check your pms
                      Thats my thought as well. I would think that it would handle better w/ everything as low as possible. Had I been able to put the cells in the sponsons, I probably would have done that as well. But it would be interesting to find out if there is much of a difference. Ive seen one, I think it was on OSE, where the motors were on the tunnel w/ the ESC's. I think the batteries were down in the sponsons. Cant remember....
                      Geico epoxy laminate hatch sale thread Black Jack epoxy laminate hatch sale thread
                      HPR06 6S Twin HOTR Genesis (SOLD) Vantex 32" cat Geico racing
                      WEST FL MODEL BOAT CLUB www.scottskiracing.com

                      Comment

                      • tiqueman
                        Fast Electric Addict!
                        • Jul 2009
                        • 5669

                        #191
                        Progress report and help w/ water pick ups

                        Got a bit done today. Going to give it another hour and call it quits for this evening. Got the stingers in Slightly modded the back of them. I drilled into them about 3/16 deep, with a 1/4" bit. Being from HOTR, they were set up w/ led bearings for 4mm shafts. Anyway, I drilled as stated and built my own bushings using 1/4" and 7/32. So they slide into the stinger nice and snug and now my 3/16 shaft works like a champ.

                        Flex shafts have been cut and all is installed. Shafts are just pushed in for now (not tightened) as I will make final adjustments and load her up w/ grease when its ready to get wet. And awww man.. I still have 2 props to sharpen and balance.

                        Which leads mt to my question. Ive got 2 options for water pick-ups. They will be mounted in the sponsons. I recently did the (bend tube) method on my single drive cat and it works pretty well. But it doesnt push as much water out the side as the old rudder pick up or Gundert pick ups, which were removed because they were causing uncontrollable characteristics in the hull. Anyway, should I go the "bent tube" method on this, or use these that I got from Steven? See pic of aluminum picj up and tubing.

                        Then build my control cables for the rudder and mount all that up... Man, I still have a lot to do....

                        Also is a pic of my 32" single drive cat, so you can see what I mean when I say "bent tube" method. A crappy picture yes, but Im too lazy to go pull it off the shelf and take a better one.
                        Attached Files
                        Geico epoxy laminate hatch sale thread Black Jack epoxy laminate hatch sale thread
                        HPR06 6S Twin HOTR Genesis (SOLD) Vantex 32" cat Geico racing
                        WEST FL MODEL BOAT CLUB www.scottskiracing.com

                        Comment

                        • Rumdog
                          Fast Electric Addict!
                          • Mar 2009
                          • 6453

                          #192
                          I'd sell that rudder and get the one from the EKOS. I'm guessing it's going to be too small. Plus, then you'll have 2 rudder pickups. 2 birds with one stone.

                          Comment

                          • tiqueman
                            Fast Electric Addict!
                            • Jul 2009
                            • 5669

                            #193
                            Originally posted by Rumdog
                            I'd sell that rudder and get the one from the EKOS. I'm guessing it's going to be too small. Plus, then you'll have 2 rudder pickups. 2 birds with one stone.
                            According to the specs on Tower, the EKOS rudder is smaller? And I want my pickups thru hull.. Dont want antennas or hoses stickin outta the boat... But thanks anyway.. I did consider that one before. If I do have rudder issues, I will wait and splurge on a HPR rudder or the other one posted earlier in this thread, similar to the HPR... cant remember who made them...
                            Last edited by tiqueman; 03-26-2010, 10:48 PM.
                            Geico epoxy laminate hatch sale thread Black Jack epoxy laminate hatch sale thread
                            HPR06 6S Twin HOTR Genesis (SOLD) Vantex 32" cat Geico racing
                            WEST FL MODEL BOAT CLUB www.scottskiracing.com

                            Comment

                            • ozzie-crawl
                              Fast Electric Addict!
                              • Sep 2008
                              • 2865

                              #194
                              the standard hotr type rudder steven sells works well.
                              is this the boat with the motors mounted in the centre you was thinking of ?
                              its one nice kitty

                              Comment

                              • tiqueman
                                Fast Electric Addict!
                                • Jul 2009
                                • 5669

                                #195
                                Nope, not the one, but same concept. It was in an offshore type cat similar to the HOTR cat.

                                The reason I didnt go w/ the "proven design" HOTR rudder as the one Steven sells.....
                                http://www.offshoreelectrics.com/pro...prod=ose-80085
                                .....is I want it to be pull - pull to have more of that "scale" look.

                                Well I decided to try out the aluminum pick ups I got from Steven. They sure do look nice. I got one installed. I had to work it a little bit so it would flush out w/ the bottom of the hull. I test fit it 100 times, then when I tacked it w/ epoxy, it seemed I couldnt get it to set right. Not worth pulling out though. Its about a paint layer difference, so I will feather it in when I paint the bottom and be done w/ it.

                                Check out the craziness for the water lines. Took 3 tries to get them routed w/out interfering w/ one another. ......Ahhhh, and now that I think about what I did.. I went to the motor first, then the ESC.... Looks like I will be configuring yet again.

                                Got the steering all hooked up as well. I need to get some swivel links rather then the clips I used so that the cable can come in under the servo arm. Coming to it, as it is, creates quite an arch from the servo arm, thru the hull and back up to the rudder tillers.

                                Little crap at the end always takes the longest!
                                Attached Files
                                Geico epoxy laminate hatch sale thread Black Jack epoxy laminate hatch sale thread
                                HPR06 6S Twin HOTR Genesis (SOLD) Vantex 32" cat Geico racing
                                WEST FL MODEL BOAT CLUB www.scottskiracing.com

                                Comment

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