Go Back  R/C Tech Forums > General Forums > RC Boating
Blackjack 29 >

Blackjack 29

Blackjack 29

Old 07-26-2014, 10:37 PM
Tech Regular
Thread Starter
iTrader: (3)
Join Date: Dec 2013
Location: Penticton BC
Posts: 258
Trader Rating: 3 (100%+)
Default Blackjack 29

My son and I have just bought 2 blackjack 29's. They both run really good but a little issue that I need help with, my sons seems to bring water up the drive line into the hull, it kinda mixes with the grease that is in the tube and makes a bit of a mess.......this only happens to my sons boat. I have an issue with mine as well......one of the negative battery terminals came unsoldered...... I am using Orion Carbon Pro 5000MaH 90C pacs with 4mm 90degree bullet connectors...could the pacs be drawing too much power for the connectors causing the solder to heat up and let go? The battery that the connector came off has only had 2 charges also......Any help would be great.


Last edited by Shaun B22; 07-27-2014 at 08:44 AM.
Shaun B22 is offline  
Old 07-29-2014, 05:38 AM
Tech Regular
Thread Starter
iTrader: (3)
Join Date: Dec 2013
Location: Penticton BC
Posts: 258
Trader Rating: 3 (100%+)

Wow 3 days, over 80 views and not 1 tidbit of advice.........thanks for the help guys.
Shaun B22 is offline  
Old 07-29-2014, 01:57 PM
Tech Addict
iTrader: (5)
fox88gt's Avatar
Join Date: Mar 2009
Location: FDL, WI
Posts: 527
Trader Rating: 5 (100%+)

Hi Shaun,

Check the teflon liner around the flexshaft in your sons boat. It may have a cut or defect that is allowing water to work its way up the shaft during operation. Make sure to use a quality grease on the shaft every couple of runs. I use the Grimracer speed grease from aquacraft.

Regarding the battery terminal unsoldering, there are two possibilities that I can think of. Your boat may be running more "wet" than your sons (ie more of the hull in contact with the water) therefore drawing more amps. Its also possible that there may have been a "cold" solder joint at that connection, and it came undone. Are you both running the same prop? RC boats draw a TON of amps and will test a battery and its connectors to the limit. A marginal solder job that would hold up for months in an RC car will let go almost immidiately in a boat.

Also, try the forums at www.offshoreelectrics.com. There is a ton of RC boat information over there, as it is dedicated to fast electric RC boats.

fox88gt is offline  
Old 08-20-2014, 10:19 PM
Tech Initiate
Southpaw477's Avatar
Join Date: Apr 2014
Posts: 20

^^^^^^ What he said. ^^^^^^
Southpaw477 is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.