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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐บ๐ธ gugie ( Recruit)
โง 91 Views ยท 2 Likes
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Thanks for posting!
Keep us updated on your progress. Keep the pictures coming... ▲
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Martin555
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Remove Ads ๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
โง 99 Views ยท 2 Likes
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Hi RR,
I am looking forward to seeing the paint job you mentioned as I have done a bit of custom spraying in my time, Mainly on motorcycles. Martin. ▲
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jbkiwi
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐บ๐ธ Len1 ( Sub-Lieutenant)
โง 94 Views ยท 3 Likes
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Its a boat so we would love to see your progress
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Martin555
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐บ๐ธ River Rat ( Captain)
โง 97 Views ยท 2 Likes
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I considered doing a jet drive ski boat ( still might in the future) but decided on all out flat bottom drag boat. The TFL jet with a reverse bucket is on my list, they are so cool ๐ I have to have one...someday ๐. Dave
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐บ๐ธ River Rat ( Captain)
โง 97 Views ยท 5 Likes
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Hey JB, this little transfer case is a 1:1 ratio with a clogged belt... So it runs dry, it has high speed sealed stainless roller bearings. I experimented with a high speed air drill and ran it at 15000 rpm for about 2 minutes and it held together. That was with no load tho, so many variables may change that. I think it will work...we will see ๐ค Thanks, Dave
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐บ๐ธ River Rat ( Captain)
โง 97 Views ยท 3 Likes
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Hey Martin, the hull will be .125" thick Birch plywood covered with 4 ounce cloth and plenty of resin. It will be approximately 36" long and 12" beam. It will be completely painted. I worked in a GM dealership as a painter (retired now) and this will have a crazy airbrushed paint job out of the 1970's. Candy, pearls, lace and fade. I think the hull will hold up to what I am doing with it, possibly going to crash it anyway...we will see ๐ Thanks, Dave
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
โง 102 Views ยท 0 Likes
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Hi RR,
Interesting and different. I for one would like to see your progress on this project. What materials are you making the hull out of ? Can you give us an idea of the size? Martin. ▲
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ณ๐ฟ jbkiwi ( Fleet Admiral)
โง 104 Views ยท 4 Likes
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Looks interesting Dave, do you think the transfer case will handle the revs required. Is it oil filled or dry (greased) ? Thought about doing my Hartley cabin boat with a V drive, but couldn't find anything which looked suitable for high speed. Still like the idea of the motor in the back (I went the jet way) which gives you clear space up front.
JB ▲
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
โง 120 Views ยท 1 Like
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Hi RR,
Taking shape nicely. Keep it up. Martin. ▲
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ฌ๐ง MotoPilot ( Chief Petty Officer 2nd Class)
โง 90 Views ยท 0 Likes
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Lovely bow flare and stern tumblehome. Thatโs a fine looking hull.
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ณ๐ฟ jbkiwi ( Fleet Admiral)
โง 93 Views ยท 2 Likes
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Looking good Dave๐
JB ▲
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Martin555
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐บ๐ธ River Rat ( Captain)
โง 89 Views ยท 2 Likes
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It's a 1/6 scale model kit from the 90s I found on ebay , Dave
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hermank
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Remove Ads ๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ฌ๐ง mturpin013 ( Admiral)
โง 89 Views ยท 2 Likes
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Thats a great V8, where did you find it?
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hermank
Martin555
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐บ๐ธ River Rat ( Captain)
โง 93 Views ยท 2 Likes
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Thanks JB, I will check those out...so far all the ones in the pics are junk (sloppy connections)...so the quest goes on..Thanks, Dave RR
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hermank
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๐ฌ Re: Hallet SK Drag boat
1 year ago by ๐ณ๐ฟ jbkiwi ( Fleet Admiral)
โง 91 Views ยท 7 Likes
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Hi Dave, like the motor,- is that one with the 2 fans in the top? Re the coupling, I ended up making my own, with large diam silicone tube and splined aluminium ends, as every Chinese universal I tried was rubbish. I have one like the one you show in the first pic, but the vibration was so bad I couldn't use it, (more for slow speed stuff like printers) Tried a TFL one (supposed to be good, lot of guys use the TFL jets with them) but the polypropylene shock absorber inside was far too firm, and was about as much use as a solid coupling.
Pretty much all of the Chinese Carden type UJs are only for cars/crawlers, and anything else for printers etc. To handle the 30,000rpm your motor will be trying to run at on 3s, you will need something precise for a coupling, as vibration might be a problem. I'd look at a US or German product designed for fast boats, (maybe contact a US boat racing club to see what they recommend). Make sure your shaft is lined up spot on as well,- every little bit helps to cut bearing killing vibration and racket. I bought 4mm, 5mm and 1/8" reamers from Ali Express to match the Chinese motor shaft sizes so I could make my own couplings. So far, the coupling in the Hartley jet boat has stood up to a 30A loading and runs quite smoothly (just the Chinese bearings in the jet unit make a racket๐) Runs a 36/60 2550kv inrunner. JB ▲
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